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* [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
@ 2013-05-15 8:36 ischdoepperdodrausse at gmail dot com
2013-05-15 17:25 ` [Bug c++/15468] " tromey at redhat dot com
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: ischdoepperdodrausse at gmail dot com @ 2013-05-15 8:36 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15468
Bug #: 15468
Summary: crash breakpoint.c:5940: internal-error:
print_one_breakpoint_location
Product: gdb
Version: 7.6
Status: NEW
Severity: normal
Priority: P2
Component: c++
AssignedTo: unassigned@sourceware.org
ReportedBy: ischdoepperdodrausse@gmail.com
Classification: Unclassified
I use gdb in emacs (24.3, trunk) with GUD.
Then I set a execption point through "catch throw". This works. Also, all is
good if execption point is reached.
But as soon as I try to print the catch point -> crash.
When using M-x gud-gdb (with gdb --fullname) there is no automatic display of
breakpoints. So crash occurs if I try to print the breakpoints excplictely.
When using M-x gdb version of GUD with "gdb -i=mi ..." and have all frames
displayed (threads, breakpoints, watches, ...) crash occurs directly after
executing "catch throw".
Please see transcript below:
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Loaded STL pretty printers
Loading ~/.gdb/pythonPegaPlan.py
Loaded ~/.gdb/pythonPegaPlan.py
Reading symbols from
/users/q4de3tsy926/user3/heierma1/sniff/6.4/appl/fscp/fscp_gui/linux-gnu/fscp.exe...done.
(gdb) catch throw
Catchpoint 1 (throw)
(gdb) r
Starting program:
/users/q4de3tsy926/user3/heierma1/sniff/6.4/appl/fscp/fscp_gui/linux-gnu/fscp.exe
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/tls/libthread_db.so.1".
*** starting module PP FsCp (PP 6.4.3) linked on May 15 2013 at 02:14:19 on
linux-gnu
*** fscp.exe: initializing ...
[New Thread 0x40200960 (LWP 21881)]
[New Thread 0x40401960 (LWP 21882)]
[New Thread 0x40602960 (LWP 21883)]
Catchpoint 1 (exception thrown), __cxxabiv1::__cxa_throw (obj=0x89ad470,
tinfo=0x2920e60 <typeinfo for EShapefileError>,
dest=0x17f1fdc <EShapefileError::~EShapefileError()>) at
/users/dxcoty/user1/markus/MAKE/gcc-4.1.2/libstdc++-v3/libsupc++/eh_throw.cc:64
64
/users/dxcutz/user1/heiner/MAKE/gcc-4.1.2/libstdc++-v3/libsupc++/eh_throw.cc:
No such file or directory.
(gdb) i b
Num Type Disp Enb Address What
1 breakpoint keep y
breakpoint.c:5940: internal-error: print_one_breakpoint_location: Assertion
`b->loc == NULL || b->loc->next == NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
breakpoint.c:5940: internal-error: print_one_breakpoint_location: Assertion
`b->loc == NULL || b->loc->next == NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Unable to dump core, use `ulimit -c unlimited' before executing GDB next time.
Debugger exited abnormally with code 1
FYI: The bug is also referenced in the IMHO unrelated kde(velop) bug tracking
system: https://bugs.kde.org/show_bug.cgi?id=316656
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* [Bug c++/15468] crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
@ 2013-05-15 17:25 ` tromey at redhat dot com
2013-05-16 11:48 ` ischdoepperdodrausse at gmail dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: tromey at redhat dot com @ 2013-05-15 17:25 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15468
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at redhat dot com
--- Comment #1 from Tom Tromey <tromey at redhat dot com> 2013-05-15 17:25:45 UTC ---
I was able to reproduce this by creating a program that
had two functions named __cxa_throw.
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* [Bug c++/15468] crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
2013-05-15 17:25 ` [Bug c++/15468] " tromey at redhat dot com
@ 2013-05-16 11:48 ` ischdoepperdodrausse at gmail dot com
2013-05-16 14:14 ` tromey at redhat dot com
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: ischdoepperdodrausse at gmail dot com @ 2013-05-16 11:48 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15468
--- Comment #2 from Heggman <ischdoepperdodrausse at gmail dot com> 2013-05-16 11:48:11 UTC ---
Can you please tell me how to check that for my executable?
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* [Bug c++/15468] crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
2013-05-15 17:25 ` [Bug c++/15468] " tromey at redhat dot com
2013-05-16 11:48 ` ischdoepperdodrausse at gmail dot com
@ 2013-05-16 14:14 ` tromey at redhat dot com
2013-05-18 0:17 ` ischdoepperdodrausse at gmail dot com
2017-01-03 21:32 ` spencerbaugh at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: tromey at redhat dot com @ 2013-05-16 14:14 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15468
--- Comment #3 from Tom Tromey <tromey at redhat dot com> 2013-05-16 14:14:01 UTC ---
You could try "info func __cxa_throw" in gdb and see if it
gives more than one answer.
Or, "nm" may tell you, but you'd have to examine each .so as well.
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* [Bug c++/15468] crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
` (2 preceding siblings ...)
2013-05-16 14:14 ` tromey at redhat dot com
@ 2013-05-18 0:17 ` ischdoepperdodrausse at gmail dot com
2017-01-03 21:32 ` spencerbaugh at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: ischdoepperdodrausse at gmail dot com @ 2013-05-18 0:17 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=15468
--- Comment #4 from Heggman <ischdoepperdodrausse at gmail dot com> 2013-05-18 00:17:10 UTC ---
Confirmed. There are two references to __cxa_throw.
So as a workaround I use "break __cxa_throw" instead of "catch throw", then gdb
can handle the two incarnations of this function.
Nevertheless older versions of gdb -- I checked at least 6.8, 7.2 and 7.3.1 --
can handle this without problems.
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* [Bug c++/15468] crash breakpoint.c:5940: internal-error: print_one_breakpoint_location
2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
` (3 preceding siblings ...)
2013-05-18 0:17 ` ischdoepperdodrausse at gmail dot com
@ 2017-01-03 21:32 ` spencerbaugh at gmail dot com
4 siblings, 0 replies; 6+ messages in thread
From: spencerbaugh at gmail dot com @ 2017-01-03 21:32 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=15468
Spencer Baugh <spencerbaugh at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |spencerbaugh at gmail dot com
--- Comment #5 from Spencer Baugh <spencerbaugh at gmail dot com> ---
This can also be triggered through normal usage of multiple inferior debugging.
With any typical C++ program (such as hello.cc at the end of this comment) the
following sequence of commands...
(gdb) catch throw
(gdb) add-inferior -copies 2 -exec hello
(gdb) infe 2
(gdb) break main
(gdb) run
(gdb) infe 3
(gdb) run
(gdb) info break
...will trigger this error:
breakpoint.c:6384: internal-error: print_one_breakpoint_location: Assertion
`b->loc == NULL || b->loc->next == NULL' failed.
It's key that the catchpoint is set before the inferiors are created. Whenever
the catchpoint is pending before multiple C++ inferiors come into existence,
this error will happen.
hello.cc:
#include <iostream>
int main() { std::cout << "Hello World!" << std::endl; }
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>From gdb-prs-return-20849-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jan 04 14:50:44 2017
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To: gdb-prs@sourceware.org
Subject: [Bug c++/15468] crash breakpoint.c:5940: internal-error:
print_one_breakpoint_location
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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Subject: [Bug c++/15468] crash breakpoint.c:5940: internal-error:
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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----------------------------------------------------------------------------
Version|7.6 |HEAD
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>From gdb-prs-return-20851-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jan 04 17:25:04 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tdep/18161] -mfloat-abi=hard causes some GDB tests fail
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
These fails are caused by arm linux kernel ptrace bug, instead of a gdb bug.
These fails have been work around in gdb testsuite
27aba0477a4818fd760accd5b29a210d0ade2f42, so close this one.
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>From gdb-prs-return-20852-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 05 17:32:33 2017
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Subject: [Bug symtab/21027] New: gdb takes too long looking up enum classes
Date: Thu, 05 Jan 2017 17:32:00 -0000
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Bug ID: 21027
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This bug is to log the bug filed here:
https://bugs.chromium.org/p/chromium/issues/detail?id=655961#
I'll try to come up with a smaller repro.
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Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
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https://sourceware.org/bugzilla/show_bug.cgi?id=20899
Luis Machado <lgustavo at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-01-05
CC| |lgustavo at codesourcery dot com
Ever confirmed|0 |1
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Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
"DW_FORM_GNU_str_index"
Date: Thu, 05 Jan 2017 20:06:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
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>From gdb-prs-return-20853-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 05 20:06:07 2017
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Subject: [Bug breakpoints/20926] gdb misses breakpoint and stops one line
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--- Comment #1 from Luis Machado <lgustavo at codesourcery dot com> ---
I think you want "b *_start" if you want to stop at the first instruction of
the function. Otherwise "b _start" will cause gdb to attempt to skip what it
thinks is the prologue of the function, which is probably causing the
breakpoint to be moved to line 6.
This doesn't look like a bug.
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Subject: [Bug breakpoints/20926] gdb misses breakpoint and stops one line
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>From gdb-prs-return-20857-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 05 20:08:15 2017
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Subject: [Bug breakpoints/20926] gdb misses breakpoint and stops one line
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>From gdb-prs-return-20858-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 09 19:27:02 2017
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Subject: [Bug corefiles/18964] [mips] 7.10.1 regression: internal-error:
mips-tdep.c:1098: bad register size
Date: Mon, 09 Jan 2017 19:27:00 -0000
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--- Comment #10 from Luis Machado <lgustavo at codesourcery dot com> ---
I just confirmed this is still happening.
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>From gdb-prs-return-20859-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jan 10 17:19:43 2017
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Subject: [Bug server/13984] gdb stops controlling a thread after "Remote 'g'
packet reply is too long: ..." error message
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berte <behzaterte at yandex dot com> changed:
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>From gdb-prs-return-20860-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jan 10 18:26:29 2017
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Subject: [Bug server/13984] gdb stops controlling a thread after "Remote 'g'
packet reply is too long: ..." error message
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--- Comment #14 from berte <behzaterte at yandex dot com> ---
Hi all,
I've same issue with gdb 7.12.
Also I found kinda workaround. If you remove -S paremeter passing to Qemu, gdb
works as expected but you cannot catch boot phase breakpoints.
### Env Info
gdb -v
GNU gdb (Gentoo 7.12 vanilla) 7.12
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
qemu-system-x86_64 --version
QEMU emulator version 2.8.0
Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers
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>From gdb-prs-return-20861-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 12 02:37:55 2017
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From: "sandra at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug sim/21042] New: arm-none-eabi-run no longer recognizes -m
option
Date: Thu, 12 Jan 2017 02:37:00 -0000
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Bug ID: 21042
Summary: arm-none-eabi-run no longer recognizes -m option
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: sim
Assignee: unassigned at sourceware dot org
Reporter: sandra at codesourcery dot com
CC: vapier at gentoo dot org
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We have a fairly ancient Dejagnu board file that causes the GDB simulator to be
invoked like:
% arm-none-eabi-run -m 100663296 a.out
arm-none-eabi-run: unrecognized option '-m'
Use --help for a complete list of options.
The list of options printed by --help has basically nothing to do with the ones
documented in run.1, which seems to be the only documentation for the
simulator. The former doesn't list -m while the latter does.
I guess --memory-size is the replacement for -m, but why was backward
compatibility broken? At the very least the documentation ought to be updated
to reflect the currently-supported options.
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To: gdb-prs@sourceware.org
Subject: [Bug tui/21044] New: Text or color mark on current line in code
listing
Date: Thu, 12 Jan 2017 09:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21044
Bug ID: 21044
Summary: Text or color mark on current line in code listing
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: hlfqdhj at 163 dot com
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Would you please add a textual mark or colorize the current line in `list`
command?
For example:
102 printf(...)
103 -> int a = 1; // arrow?
104 return 0;
105 }
Thanks.
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>From gdb-prs-return-20863-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 12 11:27:18 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/21044] Text or color mark on current line in code listing
Date: Thu, 12 Jan 2017 11:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21044
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
Component|tui |cli
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
In the TUI (try "tui enable"), we already highlight the current line.
For "list", I agree that'd be really nice. (I've wanted it for a long while.)
lldb does that, and puts the arrow before the line numbers, which I think is
more visible:
102 printf(...)
-> 103 int a = 1; // arrow?
104 return 0;
105 }
This shouldn't be hard to implement if someone wants to take a stab at it.
Note we already print the current instruction in the output of the
"disassemble" command:
0x00000000004009d3 <+12>: mov %rsi,-0x30(%rbp)
=> 0x00000000004009d7 <+16>: mov $0x400c62,%edi
0x00000000004009dc <+21>: callq 0x400760 <objc_get_class@plt>
0x00000000004009e1 <+26>: mov %rax,%rbx
In the TUI, you'll notice that we also indicate which lines have
breakpoints, with "b+". That's something that I've wanted for "list" and
"disassemble" too.
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Received: (qmail 20740 invoked by uid 48); 12 Jan 2017 19:43:33 -0000
From: "lgustavo at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/21042] arm-none-eabi-run no longer recognizes -m option
Date: Thu, 12 Jan 2017 19:43:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lgustavo at codesourcery dot com
--- Comment #1 from Luis Machado <lgustavo at codesourcery dot com> ---
It was removed in this commit:
commit 0fe84f3fbe9a740c38a8dbaa0150b8e4c25c69dd
Author: Mike Frysinger <vapier@gentoo.org>
Date: Tue Mar 31 01:13:12 2015 -0400
sim: run: punt!
Now that all targets have been converted to nrun, we can finally punt
this old inconsistent interface.
A few stray references to the old run were sprinkled about; clean them
up in the process.
We leave behind the run(1) man page mostly so that we get it updated for
the new nrun interface.
It sounds like this option won't be coming back unless it is deemed
appropriate?
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Subject: [Bug c++/11606] GDB does not properly implement the default copy
constructor
Date: Thu, 12 Jan 2017 19:48:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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CC| |lgustavo at codesourcery dot com
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--- Comment #7 from Luis Machado <lgustavo at codesourcery dot com> ---
I've checked this against GDB 7.12.50 and it works fine.
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Subject: [Bug c++/16106] C++ expression parsing meta-bug
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Bug 16106 depends on bug 11606, which changed state.
Bug 11606 Summary: GDB does not properly implement the default copy constructor
https://sourceware.org/bugzilla/show_bug.cgi?id=11606
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From: "lgustavo at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug record/21005] Process record does not support instruction GDB
7.12 (rdrand %eax)
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Luis Machado <lgustavo at codesourcery dot com> changed:
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--- Comment #1 from Luis Machado <lgustavo at codesourcery dot com> ---
I hit a different unsupported instruction with this testcase.
0x7ffff7dee6e7 <_dl_runtime_resolve_avx+71>: vmovdqa %ymm0,(%rsp)
The current mechanism for supporting these instructions is really inefficient.
Everytime we find a new unsupported instruction we need to hardcode the
knowledge inside gdb.
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>From gdb-prs-return-20868-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jan 13 08:10:13 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21048] New: backtrace is broken on i686
Date: Fri, 13 Jan 2017 08:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21048
Bug ID: 21048
Summary: backtrace is broken on i686
Product: gdb
Version: 7.12
Status: NEW
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: jan.kratochvil at redhat dot com
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https://bugzilla.redhat.com/show_bug.cgi?id=1411094
Hironobu Ishii 2017-01-08 11:58:16 CET
Description of problem:
On i686 (or 32-bit machine), bt does not work.
Applying following upstream commit solved this bug in my environment.
Fix some error-handling bugs in python frame filters
http://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=30a7bb833cbd848b1814f18b91dfdafba4e86839
Version-Release number of selected component (if applicable):
gdb-7.12-29.fc25
How reproducible:
Always, but it seems to depend on core complexity or something.
Steps to Reproduce:
1. Run firefox and gcore firefox.
2. gdb /usr/lib/firefox/firefox core.XXX
3. bt in gdb
Actual results:
(gdb) bt
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
#0 0xffffffff in #1 0xffffffff in
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Python Exception <class 'SystemError'> <built-in function isinstance> returned
a result with an error set:
Expected results:
This log was collected after applying the upstream patch.
(gdb) bt
#0 0xb7730d05 in __kernel_vsyscall ()
#1 0xb73f655f in poll () at ../sysdeps/unix/syscall-template.S:84
#2 0xb6123f4c in poll (__timeout=-1, __nfds=5, __fds=0xa2930100)
at /usr/include/bits/poll2.h:46
#3 0xb6123f4c in g_poll (fds=0xa2930100, nfds=5, timeout=-1) at gpoll.c:124
#4 0xb2cb07ba in PollWrapper(GPollFD*, guint, gint)
(ufds=ufds@entry=0xa2930100, nfsd=nfsd@entry=5, timeout_=timeout_@entry=-1)
at
/usr/src/debug/firefox-50.1.0/firefox-50.1.0/widget/gtk/nsAppShell.cpp:42
#5 0xb61136e8 in g_main_context_poll (priority=<optimized out>, n_fds=5,
fds=0xa2930100, timeout=<optimized out>, context=0xb712da90) at gmain.c:4228
#6 0xb61136e8 in g_main_context_iterate (context=context@entry=0xb712da90,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
gmain.c:3924
#7 0xb6113837 in g_main_context_iteration (context=0xb712da90, may_block=1)
at gmain.c:3990
#8 0xb2cb0847 in nsAppShell::ProcessNextNativeEvent(bool) (this=0xa9749b50,
mayWait=true)
at
/usr/src/debug/firefox-50.1.0/firefox-50.1.0/widge/gtk/nsAppShell.cpp:270
Additional info:
This bug is also repoted in debian.
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=814558
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21048] backtrace is broken on i686
Date: Fri, 13 Jan 2017 08:14:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21048
Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jan.kratochvil at redhat dot com
Resolution|--- |FIXED
Target Milestone|--- |7.12.1
--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Backported:
commit 30a7bb833cbd848b1814f18b91dfdafba4e86839
Author: Tom Tromey <tom@tromey.com>
Date: Mon Oct 31 11:10:35 2016 -0600
Fix some error-handling bugs in python frame filters
[RFA 1/2] Fix some error-handling bugs in python frame filters
https://sourceware.org/ml/gdb-patches/2016-10/msg00870.html
https://sourceware.org/ml/gdb-patches/2016-11/msg00076.html
into 7.12 as:
commit df1fe27b672d7aa054eaad8b51f86302f7e46c65
Author: Tom Tromey <tom@tromey.com>
Date: Mon Oct 31 11:10:35 2016 -0600
Fix some error-handling bugs in python frame filters
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From: "raphael.kubo.da.costa at intel dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
"DW_FORM_GNU_str_index"
Date: Fri, 13 Jan 2017 08:25:00 -0000
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Raphael Kubo da Costa <raphael.kubo.da.costa at intel dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |raphael.kubo.da.costa@intel
| |.com
--- Comment #1 from Raphael Kubo da Costa <raphael.kubo.da.costa at intel dot com> ---
Additional information: this is a regression caused by
http://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=7d45c7c3f692d93c3a33a043c347f1386681deb4
(dwarf2read.c: Check type of string valued attributes prior to decoding) and
has been present since 7.11.
It makes GDB print the wrong namespace names for all code built with clang and
-gsplit-dwarf, there's additional information here:
https://bugs.chromium.org/p/chromium/issues/detail?id=680654
Lech: I'm not sure your patch can be accepted as-is, see gdb/CONTRIBUTE and the
"Submitting Patches" section.
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From: "raphael.kubo.da.costa at intel dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
"DW_FORM_GNU_str_index"
Date: Fri, 13 Jan 2017 08:36:00 -0000
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Raphael Kubo da Costa <raphael.kubo.da.costa at intel dot com> changed:
What |Removed |Added
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CC| |kevinb at redhat dot com
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From: "lgustavo at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug record/21005] Process record does not support instruction GDB
7.12 (rdrand %eax)
Date: Fri, 13 Jan 2017 09:01:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-01-13
Assignee|unassigned at sourceware dot org |lgustavo at codesourcery dot com
Ever confirmed|0 |1
--- Comment #2 from Luis Machado <lgustavo at codesourcery dot com> ---
Patch sent to support rdrand and rdseed.
https://sourceware.org/ml/gdb-patches/2017-01/msg00262.html
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From: "ian at iankelling dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21051] New: nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
Date: Sat, 14 Jan 2017 23:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21051
Bug ID: 21051
Summary: nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion
`lwp_is_stopped (lwp)' failed.
Product: gdb
Version: HEAD
Status: UNCONFIRMED
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Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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I'm on debian testing, updated as of about 1-6-2017.
Tested on gdb 7.12-4, and also 7.12.50.20170114-git.
Error occurs when debugging emacs. I'm using emacs from commit e27203276 (Jan 7
2017), I assume it would happen with other versions of emacs, the bug probably
has nothing to do with emacs.
$ uname -a
Linux treetowl 4.8.0-2-amd64 #1 SMP Debian 4.8.11-1 (2016-12-02) x86_64
GNU/Linux
$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/6/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 6.2.1-5'
--with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --program-prefix=x86_64-linux-gnu- --enable-shared
--enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --disable-browser-plugin --enable-java-awt=gtk
--enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-amd64/jre
--enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-amd64
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-amd64
--with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc=auto --enable-multiarch --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 6.2.1 20161124 (Debian 6.2.1-5)
bash-4.4$ ./gdb/gdb -data-directory=./gdb/data-directory -ex="set
follow-fork-mode child" -ex=r -ex=quit --args emacsclient -nc
GNU gdb (GDB) 7.12.50.20170114-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from emacsclient...done.
Starting program: /usr/local/bin/emacsclient -nc
/usr/local/bin/emacsclient: can't find socket; have you started the server?
To start the server in Emacs, type "M-x server-start".
[New process 15874]
process 15874 is executing new program: /usr/local/bin/emacs-26.0.50
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Warning: due to a long standing Gtk+ bug
http://bugzilla.gnome.org/show_bug.cgi?id=85715
Emacs might crash when run in daemon mode and the X11 connection is
unexpectedly lost.
Using an Emacs configured with --with-x-toolkit=lucid does not have this
problem.
[New process 15877]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffe7346700 (LWP 15878)]
[New process 15879]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted (core dumped)
bash-4.4$ Error: server did not start correctly
Error: Could not start the Emacs daemon
Trace from the core file (too big to attach according to 10M limit stated on
this form).
(gdb) bt
#0 0x00007f2bee6ddfdf in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f2bee6df40a in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x000055c2652f0496 in dump_core () at utils.c:479
#3 0x000055c2652f293a in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *) (
problem=problem@entry=0x55c265989540 <internal_error_problem>,
file=<optimized out>, line=<optimized out>, fmt=<optimized out>,
ap=ap@entry=0x7ffe284193a8) at utils.c:690
#4 0x000055c2652f2a0b in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7ffe284193a8) at
utils.c:716
#5 0x000055c2652077b2 in internal_error (file=file@entry=0x55c265495878
"nat/x86-linux-dregs.c", line=line@entry=146, fmt=<optimized out>)
at common/errors.c:55
#6 0x000055c2650d23e0 in x86_linux_update_debug_registers (lwp=0x55c2677ddaa0)
at nat/x86-linux-dregs.c:146
#7 0x000055c2650c3085 in detach_one_lwp (lp=lp@entry=0x55c2677ddaa0,
signo_p=signo_p@entry=0x0) at linux-nat.c:1439
#8 0x000055c2650c336f in detach_callback (lp=0x55c2677ddaa0, data=<optimized
out>) at linux-nat.c:1497
#9 0x000055c2650c5989 in iterate_over_lwps (filter=...,
callback=callback@entry=0x55c2650c3330 <detach_callback(lwp_info*, void*)>,
data=data@entry=0x0)
at linux-nat.c:992
#10 0x000055c2650c5ed9 in linux_nat_detach (ops=0x55c265bf83c0, args=0x0,
from_tty=0) at linux-nat.c:1519
#11 0x000055c2650cbf0f in thread_db_detach (ops=<optimized out>, args=0x0,
from_tty=0) at linux-thread-db.c:1100
#12 0x000055c26524eaa0 in handle_vfork_child_exec_or_exit (exec=exec@entry=1)
at infrun.c:976
#13 0x000055c26524f7af in handle_inferior_event_1 (ecs=0x7ffe28419820) at
infrun.c:5321
#14 handle_inferior_event (ecs=ecs@entry=0x7ffe28419820) at infrun.c:5411
#15 0x000055c265251608 in fetch_inferior_event (client_data=<optimized out>) at
infrun.c:3959
#16 0x000055c26520e63d in gdb_wait_for_event (block=block@entry=0) at
event-loop.c:859
#17 0x000055c26520e777 in gdb_do_one_event () at event-loop.c:322
#18 0x000055c26520e8c6 in gdb_do_one_event () at event-loop.c:353
#19 0x000055c2652e9d4c in wait_sync_command_done () at top.c:570
#20 0x000055c2652e9fb6 in maybe_wait_sync_command_done (was_sync=0) at
top.c:587
#21 execute_command (p=<optimized out>, p@entry=0x7ffe2841aad1 "r",
from_tty=from_tty@entry=1) at top.c:676
#22 0x000055c265264b28 in catch_command_errors (command=0x55c2652e9d90
<execute_command(char*, int)>, arg=0x7ffe2841aad1 "r", from_tty=1) at
main.c:376
#23 0x000055c265265722 in captured_main_1 (context=<optimized out>) at
main.c:1119
#24 captured_main (data=<optimized out>) at main.c:1140
#25 gdb_main (args=<optimized out>) at main.c:1158
#26 0x000055c265078ae8 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
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From: "ian at iankelling dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21051] nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
Date: Sat, 14 Jan 2017 23:46:00 -0000
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>From gdb-prs-return-20875-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jan 15 05:39:00 2017
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From: "hlfqdhj at 163 dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/21044] Text or color mark on current line in code listing
Date: Sun, 15 Jan 2017 05:38:00 -0000
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--- Comment #2 from Yifei Zheng <hlfqdhj at 163 dot com> ---
(In reply to Pedro Alves from comment #1)
> In the TUI (try "tui enable"), we already highlight the current line.
>
> For "list", I agree that'd be really nice. (I've wanted it for a long
> while.)
>
> lldb does that, and puts the arrow before the line numbers, which I think is
> more visible:
>
> 102 printf(...)
> -> 103 int a = 1; // arrow?
> 104 return 0;
> 105 }
>
> This shouldn't be hard to implement if someone wants to take a stab at it.
>
> Note we already print the current instruction in the output of the
> "disassemble" command:
>
> 0x00000000004009d3 <+12>: mov %rsi,-0x30(%rbp)
> => 0x00000000004009d7 <+16>: mov $0x400c62,%edi
> 0x00000000004009dc <+21>: callq 0x400760 <objc_get_class@plt>
> 0x00000000004009e1 <+26>: mov %rax,%rbx
>
> In the TUI, you'll notice that we also indicate which lines have
> breakpoints, with "b+". That's something that I've wanted for "list" and
> "disassemble" too.
Really fast reply... Thanks for your tips.
I've never used "tui" before. I tried it just now and discovered it's quite
similar to "layout" command (or are they the same?)
And I totally agree with your idea putting arrow before line count.
Anyway thanks for viewing the bug.
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>From gdb-prs-return-20876-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 16 15:30:33 2017
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Subject: [Bug gdb/20939] GDB aborts if there is an error in disassembly
Date: Mon, 16 Jan 2017 15:30:00 -0000
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--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
It is a regression. GDB 7.11.1 works well (with --enable-build-with-cxx and
without --enable-build-with-cxx) on aarch64-linux.
(gdb) disassemble 0x0,+4
Dump of assembler code from 0x0 to 0x4:
0x0000000000000000: Cannot access memory at address 0x0
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>From gdb-prs-return-20877-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 16 16:18:11 2017
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Subject: [Bug gdb/20757] gdb: DWARF-5 support
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>From gdb-prs-return-20878-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 16 20:51:09 2017
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Subject: [Bug macros/21055] New: docs use -gdwarf-2 to avoid unavailable
dwarf1
Date: Mon, 16 Jan 2017 20:51:00 -0000
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Bug ID: 21055
Summary: docs use -gdwarf-2 to avoid unavailable dwarf1
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The docs available at
https://sourceware.org/gdb/onlinedocs/gdb/Macros.html#fn-1, contain the
following lines:
```
Now, we compile the program using the gnu C compiler, gcc. We pass the
-gdwarf-2[footnote] and -g3 flags to ensure the compiler includes information
about preprocessor macros in the debugging information.
$ gcc -gdwarf-2 -g3 sample.c -o sample
$
```
While this advice to use -gdwarf2 to avoid dwarf1 was appropriate in 2002 when
it seems this documentation was written, it's redundant and unhelpful in 2017.
The footnote _does_ indicate that it only needs to be _at least_ dwarf2, which
is helpful, if anyone actually reads the footnotes.
Note that current gcc doesn't even have an option for building dwarf1, let
alone is it the default. (It was deprecated back in gcc 3.3, and removed in
3.4)
I recommend that the documentation simply be:
```
Now, we compile the program using the gnu C compiler, gcc. We pass the -g3
flags to ensure the compiler includes information about preprocessor macros in
the debugging information.
$ gcc -g3 sample.c -o sample
$
```
I don't believe even a footnote on minimum required dwarf versions is
appropriate in current version gdb documentation.
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>From gdb-prs-return-20879-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jan 17 16:39:20 2017
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
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>From gdb-prs-return-20880-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 19 17:38:13 2017
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From: "pradeepkumar.chinnusamy at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21067] New: Trying to run gdb on the core file, but fails
with coredump
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i have installed GDB ( 7.9.1 ) in AIX 7100-02-03-1334 operating system.
root:#gdb /usr/openv/netbackup/bin/bptm /core.11993334.18202542
GNU gdb (GDB) 7.9.1
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "powerpc64-ibm-aix6.1.2.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/openv/netbackup/bin/bptm...(no debugging symbols
found)...done.
warning: core file may not match specified executable file.
[New Thread 1]
Segmentation fault(coredump)
Can you let me know how to fix this.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21068] New: Python interactive prompt crashes GDB when
using Python 3.6
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Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
When building GDB against Python 3.6, trying to enter anything in the Python
interactive prompt crashes the process:
GNU gdb (GDB) 7.12.50.20170119-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) python hello
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'hello' is not defined
Error while executing Python code.
(gdb) pi
>>> foo
Fatal Python error: Python memory allocator called without holding the GIL
Current thread 0x00007f28a32d7780 (most recent call first):
[1] 31729 abort ./gdb
The issue is that we're calling PyMem_Malloc instead of PyMem_RawMalloc in
gdbpy_readline_wrapper. We need to change this only for Python >= 3.4.
Ref:
https://docs.python.org/3.4/c-api/veryhigh.html#c.PyOS_ReadlineFunctionPointer
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From: "stilor at att dot net" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21070] New: GDB fails to build for mips-*-linux-musl
Date: Fri, 20 Jan 2017 04:55:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21070
Bug ID: 21070
Summary: GDB fails to build for mips-*-linux-musl
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: stilor at att dot net
Target Milestone: ---
Created attachment 9766
--> https://sourceware.org/bugzilla/attachment.cgi?id=9766&action=edit
PATCH
Quote from the original patch description:
[[[[
Build fix for MIPS with musl libc
The MIPS specific header <sgidefs.h> is provided by glibc and uclibc
but not by musl. Regardless of the libc, the kernel headers provide
<asm/sgidefs.h> which provides the same definitions, so use that
instead.
Upstream-Status: Pending
Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
]]]]
Despite the "Upstream-Status" line, I wasn't able to find this issue in the
GDB's bugzilla - so submitting it.
This has been reported as an issue in crosstool-ng:
https://github.com/crosstool-ng/crosstool-ng/pull/517
The patch was originally provided for OpenEmbedded:
http://git.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gdb/gdb/0007-use-asm-sgidefs.h.patch
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/20939] GDB aborts if there is an error in disassembly
Date: Fri, 20 Jan 2017 13:04:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-7.12-branch branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e2285602341fff057a9b4687b465a9d9cde1303f
commit e2285602341fff057a9b4687b465a9d9cde1303f
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Jan 20 13:00:52 2017 +0000
Throw SJ/LJ exception on error in disassembly
PR 20939 reports that GDB will abort on memory error in disassembly,
(gdb) disassemble 0x0,+4
Dump of assembler code from 0x0 to 0x4:
terminate called after throwing an instance of
'gdb_exception_RETURN_MASK_ERROR'
0x0000000000000000: Aborted
(gdb) guile (print (arch-disassemble arch 0 #:size 4))^M
terminate called after throwing an instance of
'gdb_exception_RETURN_MASK_ERROR'^M
ERROR: Process no longer exists
This patch fixes PR 20939 by catching C++ exception, throwing SJ/LJ
exception in the call back passed to C functions of opcodes, and
catching SJ/LJ exception in gdb, and throw exception.
The patch follows this commit
89525768cd086a0798a504c81fdf7ebcd4c904e1
Propagate GDB/C++ exceptions across readline using sj/lj-based TRY/CATCH
rather than "backport" the fix to this PR I posted for mainline
https://sourceware.org/ml/gdb-patches/2017-01/msg00288.html because the
fix for mainline includes 1) some changes to opcodes, 2) some refactors
in C++. All of them are risky to backport to 7.12 branch.
With this patch applied to 7.12 branch, GDB doesn't abort on memory error
in disassembly. It fixes some test failures in gdb.guile/scm-disasm.exp
and gdb.python/py-arch.exp on aarch64-linux.
-ERROR: Process no longer exists
-UNRESOLVED: gdb.guile/scm-disasm.exp: test bad memory access
+PASS: gdb.guile/scm-disasm.exp: test bad memory access
-ERROR: Process no longer exists
-UNRESOLVED: gdb.python/py-arch.exp: test bad memory access
+PASS: gdb.python/py-arch.exp: test bad memory access
I'll add the scm-disasm test to master later.
gdb:
2017-01-20 Yao Qi <yao.qi@linaro.org>
PR gdb/20939
* disasm.c (dis_asm_memory_error): Catch the error and rethrow
it as a SJ/LJ exception. Add GDB_NOEXCEPT.
(disasm_print_insn_noexcept): New function.
(disasm_print_insn): New function.
(gdb_pretty_print_insn): Call disasm_print_insn instead of
gdbarch_print_insn.
(gdb_print_insn): Likewise.
(gdb_buffered_insn_length): Likewise.
* event-top.c (GDB_NOEXCEPT): Move it to ...
* exceptions.h (GDB_NOEXCEPT): ... here.
* guile/scm-disasm.c (gdbscm_disasm_memory_error): Remove.
(gdbscm_print_insn_from_port): Don't set di.memory_errro_func.
Call disasm_print_insn rather than gdbarch_print_insn.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21068] Python interactive prompt crashes GDB when using
Python 3.6
Date: Sat, 21 Jan 2017 06:33:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #1 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=6f8b04077b0c3dc697b1c2bb042c69413d9813b8
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
Date: Sat, 21 Jan 2017 13:52:00 -0000
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--- Comment #3 from HBBroeker@T-Online.de ---
(In reply to Peter Foley from comment #0)
> Building gdb at commit f964e51d90 with flex 2.6.3 and bison 3.0.4 fails with
> the below error.
> I've attached a patch that allows the compile to succeed, although I'm
> unclear whether the compatibility code it removes is still necessary.
That patch relies on $(YACC) being bison, for otherwise the %name-prefix option
would not be available. I fear a more generally applicable solution will be
needed (maybe use the -p command-line option instead, which is required by
POSIX). The same issue could apply to the lex file change, but the gdb source
already insists on using flex, anyway.
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Subject: [Bug build/20993] gdb does not link, when flex v2.6.2-19-g6bea32e is
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Date: Sat, 21 Jan 2017 13:54:00 -0000
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This is essentially a duplicate of bug 21057.
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From: "kevin.brodsky at arm dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20939] GDB aborts if there is an error in disassembly
Date: Mon, 23 Jan 2017 09:35:00 -0000
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--- Comment #5 from Kevin Brodsky <kevin.brodsky at arm dot com> ---
Great, thank you Yao!
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https://sourceware.org/bugzilla/show_bug.cgi?id=21077
Bug ID: 21077
Summary: Record is not working for apache and php-interpreter
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: record
Assignee: unassigned at sourceware dot org
Reporter: sayaghmohammed at gmail dot com
Target Milestone: ---
Created attachment 9769
--> https://sourceware.org/bugzilla/attachment.cgi?id=9769&action=edit
A problem internal to GDB has been detected
- I compiled and installed gdb, apache httpd, and php-interpreter. And I want
to debug php, but record is not working.
- I executed then the command:
sudo gdb /wwwroot/bin/httpd
--data-directory=/usr/src/gdb-7.11.1/gdb/data-directory
- Then I set the following break point:
b main/php_variables.c:274
- Once I execute the application, and the app stops at the breakpoint, I
executed the record command
record
- Then continue command. But I got the enclosed error
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From: "tuben at lysator dot liu.se" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/20624] gdb.Value doesn't support Python floordiv
operator, //
Date: Tue, 24 Jan 2017 07:15:00 -0000
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Johan Tufvesson <tuben at lysator dot liu.se> changed:
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--- Comment #3 from Johan Tufvesson <tuben at lysator dot liu.se> ---
I am running a pre-built version for ARM (from
https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads), and have
problem with this. I don't know if that distribution has added any patch for
this behavior but this works with their 7.10.1 release (part of their gcc
"5.4-2016q3" toolchain):
(gdb) py print gdb.Value(1)//1
1
but does not work for their 7.12.0 (part of their gcc "6.2-2016q4" toolchain):
(gdb) py print gdb.Value(1)//1
Traceback (most recent call last):
File "<string>", line 1, in <module>
TypeError: unsupported operand type(s) for //: 'gdb.Value' and 'int'
Error while executing Python code.
I don't blame the GDB project if the ARM people have added (and later removed)
a patch for this behavior, but I think the behavior of not allowing // is
wrong.
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From: "jwakely.gcc at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/20624] gdb.Value doesn't support Python floordiv
operator, //
Date: Tue, 24 Jan 2017 09:22:00 -0000
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--- Comment #4 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
(In reply to Johan Tufvesson from comment #3)
> but does not work for their 7.12.0 (part of their gcc "6.2-2016q4"
> toolchain):
It's possible their 7.10.1 is built against Python 2 and 7.12.0 is built
against Python 3 or something like that.
> I don't blame the GDB project if the ARM people have added (and later
> removed) a patch for this behavior, but I think the behavior of not allowing
> // is wrong.
It's not explicitly disallowed, it just needs extra code to make it work. I
will resume work on my patch for this when I get a chance.
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From: "tuben at lysator dot liu.se" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/20624] gdb.Value doesn't support Python floordiv
operator, //
Date: Tue, 24 Jan 2017 09:42:00 -0000
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--- Comment #5 from Johan Tufvesson <tuben at lysator dot liu.se> ---
No, they both use the Python version that I have installed, which happens to be
Python 2.7. A solution would be greatly appreciated.
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Subject: [Bug gdb/21078] New: gdb compiled with mingw32 crashes on Windows7
when entering any invalid command
Date: Tue, 24 Jan 2017 16:12:00 -0000
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Bug ID: 21078
Summary: gdb compiled with mingw32 crashes on Windows7 when
entering any invalid command
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: david at engster dot org
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Created attachment 9770
--> https://sourceware.org/bugzilla/attachment.cgi?id=9770&action=edit
config.log file from configure run
I have built the latest gdb (7.12.1) with i686-w64-mingw32 (gcc v6.3.0, MSYS2)
on a Windows 7 64bit system, simply using
./configure --prefix=/opt/gdb
(I attached the config.log to this report.)
When I start gdb and enter any invalid command that would normally lead to an
error message (like "help foobar"), the process just aborts (like from an
unhandled exception):
(gdb) help foobar
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
Version 7.12 has the same problem, but 7.11 works fine, so this must be
triggered by something since 7.11. I also tried building with the old mingw gcc
from mingw.org, but it has the same problem. Unfortunately, I cannot seem to be
able to obtain any backtrace when running this inside another gdb.
I also tried other gdb v7.12 binary builds, and some have the same problem,
for instance the gdb in the latest Linaro toolchain for Arm, or the 'gdb' that
can be installed in MSYS2. However, the build from Eli Zaretskii (ezwinports)
works fine.
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From: "orlandoarias at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21079] New: [gdb-python] Error in handling MPX registers
when using Python 3
Date: Tue, 24 Jan 2017 17:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21079
Bug ID: 21079
Summary: [gdb-python] Error in handling MPX registers when
using Python 3
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: orlandoarias at gmail dot com
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Greetings,
When GDB is compiled with Python 3 support, dumping MPX registers in IA32 and
AMD64 results in the following error:
(gdb) info reg bnd0
Python Exception <class 'NameError'> name 'long' is not defined:
Python Exception <class 'NameError'> name 'long' is not defined:
bnd0
This is because 'long' and 'int' were merged in Python 3. This issue has been
brought up before [1] but I did not see anything in the bug tracker. There was
talk of submitting patches [2] but these appear to have never made it into GDB.
The patch alone seems to be insufficient, since I get duplicate output when
printing MPX registers:
(gdb) info reg bnd0
bnd0 {lbound = 0x0, ubound = 0xffffffffffffffff} : size = -1 {lbound = 0x0,
ubound = 0xffffffffffffffff} : size = -1
Thank you for looking into this.
Cheers,
Orlando.
[1] https://lists.gnu.org/archive/html/bug-gnu-emacs/2016-02/msg00824.html
[2] https://lists.gnu.org/archive/html/bug-gnu-emacs/2016-02/msg00849.html
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Subject: [Bug python/21079] [gdb-python] Error in handling MPX registers when
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Orlando Arias <orlandoarias at gmail dot com> changed:
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Subject: [Bug win32/14527] warning: section .gnu_debuglink not found in
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Nicola <lists at svrinformatica dot it> changed:
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--- Comment #5 from Nicola <lists at svrinformatica dot it> ---
still happen with gdb 7.12 and objcopy from binutils 2.27
tested in a cross build environment
(https://www.archlinux.org/packages/?q=mingw)
the suggested fix does not work for dll
anyway gdb is able to use the debug symbols
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From: "lgustavo at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21087] New: Configuring gdb with --enable-maintainer-mode
fails with autoconf version error
Date: Wed, 25 Jan 2017 16:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21087
Bug ID: 21087
Summary: Configuring gdb with --enable-maintainer-mode fails
with autoconf version error
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: lgustavo at codesourcery dot com
Target Milestone: ---
Reported on IRC. Attempting to configure master binutils-gdb with
--enable-maintainer-mode fails due to an autoconf version check from src/intl:
make[2]: Entering directory '/fsf/build-binutils-gdb-maintainer/intl'
cd ../../binutils-gdb/intl && aclocal -I ../config
configure.ac:2: error: Please use exactly Autoconf 2.64 instead of 2.69.
../config/override.m4:12: _GCC_AUTOCONF_VERSION_CHECK is expanded from...
configure.ac:2: the top level
autom4te: m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
Makefile:236: recipe for target '../../binutils-gdb/intl/aclocal.m4' failed
make[2]: *** [../../binutils-gdb/intl/aclocal.m4] Error 1
make[2]: Leaving directory '/fsf/build-binutils-gdb-maintainer/intl'
Makefile:6567: recipe for target 'all-intl' failed
make[1]: *** [all-intl] Error 2
make[1]: Leaving directory '/fsf/build-binutils-gdb-maintainer'
Makefile:849: recipe for target 'all' failed
make: *** [all] Error 2
It has also been reported that switching to Autoconf 2.64 will then cause
gnulib to complain about Autoconf being too old a version:
make[4]: Entering directory `build/binutils-gdb/gdb/build-gnulib'
cd /binutils-gdb/gdb/gnulib && aclocal -I import/m4 -I ../../config
configure.ac:38: error: Autoconf version 2.65 or higher is required
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>From gdb-prs-return-20897-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jan 25 16:27:34 2017
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Subject: [Bug build/21087] Configuring gdb with --enable-maintainer-mode
fails with autoconf version error
Date: Wed, 25 Jan 2017 16:27:00 -0000
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Peter Bergner <bergner at vnet dot ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bergner at vnet dot ibm.com
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>From gdb-prs-return-20898-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jan 25 23:40:03 2017
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From: "pbotfullerton at cock dot li" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tui/21089] New: GDB hangs if a syntax error is found when
quitting
Date: Wed, 25 Jan 2017 23:40:00 -0000
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Bug ID: 21089
Summary: GDB hangs if a syntax error is found when quitting
Product: gdb
Version: 7.12
Status: UNCONFIRMED
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If a syntax error is found after the "quit" keyword (eg, by typing in "quit;"),
GDB hangs indefinitely and has to be killed. While in this hung state, it
responds to Ctrl-C by printing out "Quit", a newline, and prompt but does do
anything else.
Example session:
GNU gdb (Debian 7.12-4) 7.12
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) quit;
Invalid character ';' in expression.
(gdb)
[hanged process results]
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>From gdb-prs-return-20899-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 14:38:26 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/20939] GDB aborts if there is an error in disassembly
Date: Thu, 26 Jan 2017 14:38:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d8b49cf0c891d09dd58de05ad5cfe396b612cf3b
commit d8b49cf0c891d09dd58de05ad5cfe396b612cf3b
Author: Yao Qi <yao.qi@linaro.org>
Date: Thu Jan 26 14:29:20 2017 +0000
Don't throw exception in dis_asm_memory_error
Hi,
GDB calls some APIs from opcodes to do disassembly and provide some
call backs. This model makes troubles on C++ exception unwinding,
because GDB is a C++ program, and opcodes is still compiled as C.
As we can see, frame #10 and #12 are C++, while #frame 11 is C,
#10 0x0000000000544228 in memory_error (err=TARGET_XFER_E_IO,
memaddr=<optimized out>) at ../../binutils-gdb/gdb/corefile.c:237
#11 0x00000000006b0a54 in print_insn_aarch64 (pc=0, info=0xffffffffeeb0)
at ../../binutils-gdb/opcodes/aarch64-dis.c:3185
#12 0x0000000000553590 in gdb_pretty_print_insn
(gdbarch=gdbarch@entry=0xbbceb0, uiout=uiout@entry=0xbc73d0,
di=di@entry=0xffffffffeeb0,
insn=0xffffffffed40, insn@entry=0xffffffffed90, flags=flags@entry=0,
C++ exception unwinder can't go across frame #11 unless it has
unwind table. However, C program on many architectures doesn't
have it in default. As a result, GDB aborts, which is described
in PR 20939.
This is not the first time we see this kind of problem. We've
had a commit 89525768cd086a0798a504c81fdf7ebcd4c904e1
"Propagate GDB/C++ exceptions across readline using sj/lj-based TRY/CATCH".
We can fix the disassembly bug in a similar way, this is the option one.
Since opcodes is built with gdb, we fix this problem in a different
way as we did for the same issue with readline. Instead of throwing
exception in dis_asm_memory_error, we record the failed memory
address, and throw exception when GDB returns from opcodes disassemblers.
gdb:
2017-01-26 Yao Qi <yao.qi@linaro.org>
Pedro Alves <palves@redhat.com>
PR gdb/20939
* disasm.c (gdb_disassembler::dis_asm_memory_error): Don't
call memory_error, save memaddr instead.
(gdb_disassembler::print_insn): If gdbarch_print_insn returns
negative, cal memory_error.
* disasm.h (gdb_disassembler) <m_err_memaddr>: New field.
gdb/testsuite:
2017-01-26 Yao Qi <yao.qi@linaro.org>
* gdb.base/all-architectures.exp.in (do_arch_tests): Test
disassemble on address 0.
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>From gdb-prs-return-20900-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 15:47:21 2017
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Subject: [Bug c++/15502] DW_AT_decl_line ignored in
DW_TAG_imported_declaration
Date: Thu, 26 Jan 2017 15:47:00 -0000
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--- Comment #1 from David Blaikie <dblaikie at gmail dot com> ---
Ping
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>From gdb-prs-return-20901-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 15:48:21 2017
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Subject: [Bug c++/16841] virtual inheritance via typedef cannot find base
Date: Thu, 26 Jan 2017 15:48:00 -0000
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--- Comment #4 from David Blaikie <dblaikie at gmail dot com> ---
ping
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>From gdb-prs-return-20902-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 15:51:08 2017
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To: gdb-prs@sourceware.org
Subject: [Bug c++/16843] GDB relies on the mangled name of a subprogram to be
a prefix of the enclosing class name
Date: Thu, 26 Jan 2017 15:51:00 -0000
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ping
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>From gdb-prs-return-20903-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 15:52:22 2017
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Subject: [Bug c++/17315] 'until' behavion in watchpoint.c (for loops)
incompatible with loop condition instructions at the top of the loop
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--- Comment #1 from David Blaikie <dblaikie at gmail dot com> ---
ping
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>From gdb-prs-return-20904-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 15:55:42 2017
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Subject: [Bug c++/17701] gdb.base/consecutive.exp fails when the line table
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--- Comment #3 from David Blaikie <dblaikie at gmail dot com> ---
ping
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>From gdb-prs-return-20905-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 19:41:39 2017
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Subject: [Bug gdb/20633] JIT code debugging doesn't work with dynamically
linked LLVM
Date: Thu, 26 Jan 2017 19:41:00 -0000
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--- Comment #2 from Yichao Yu <yyc1992 at gmail dot com> ---
Ping.
Could someone comment on the correct way to fix this please?
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>From gdb-prs-return-20906-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jan 26 20:05:13 2017
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Subject: [Bug gdb/20633] JIT code debugging doesn't work with dynamically
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--- Comment #3 from Yichao Yu <yyc1992 at gmail dot com> ---
Maybe reversing the lookup order can fix this? The global variable (descriptor)
won't have PLT issue.
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Subject: [Bug gdb/20939] GDB aborts if there is an error in disassembly
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #7 from Yao Qi <qiyao at gcc dot gnu.org> ---
It is fixed in master too.
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>From gdb-prs-return-20908-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 30 15:53:14 2017
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Subject: [Bug python/16798] gdb.Value does not accept values which fit in
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Tom Tromey <tromey at sourceware dot org> changed:
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Status|NEW |RESOLVED
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This works for me with git gdb.
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>From gdb-prs-return-20909-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jan 30 16:03:41 2017
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Subject: [Bug tui/21089] GDB hangs if a syntax error is found when quitting
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Already fixed.
*** This bug has been marked as a duplicate of bug 20604 ***
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Subject: [Bug gdb/20604] Using quit() causes a infinity loop which and can
not exit gdb
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
*** Bug 21089 has been marked as a duplicate of this bug. ***
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Subject: [Bug symtab/21095] New: gdb_index generated by gold causes "Couldn't
find method"
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Bug ID: 21095
Summary: gdb_index generated by gold causes "Couldn't find
method"
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: symtab
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Reporter: atotic at chromium dot org
Target Milestone: ---
gdb version: GNU gdb (GDB) 7.9-gg19
gold version: GNU gold (GNU Binutils 2.26.20160125) 1.11
TL;DR
Trying to eval a method results in "Couldn't find method" when
debugging libraries linked with gold's gdb_index option.
Details:
I debug Chromium with gdb. I use gold linker's gdb_index option
to speed up my gdb startup time. Chromium has lots of shared libraries,
and they all get their own gdb_index.
Everything works fine when I do not use gold to generate gdb_index.
For example:
1) not using gdb_index at all works
2) generating gdb_index using gdb save gdb-index && objcopy works.
The gold setup worked fine for a few months, but recently I've started
running into problems where gdb can't evaluate methods because
it can't find them in superclass chain.
An example:
Running Chromium, gold gdb_index = true
The program is stopped in a method blink::NGBlockNode::Layout()
'this' is NGBlockNode*
this->layout_box_ is LayoutBox*
LayoutBox inheriths method debugName() from superclass LayoutObject.
(gdb) p this->layout_box_->debugName()
Couldn't find method blink::LayoutBox::debugName
(gdb) p *this->layout_box_
$3 = <incomplete type>
I've discovered a workaround:
If I set breakpoints in constructors of LayoutBox superclass
chain, the methods become reachable.
(gdb) br blink::LayoutBox::LayoutBox
Breakpoint 2 at 0x7f2e1e7b8870 (2 locations)
(gdb) p *this->layout_box_
$5 = {
<blink::LayoutBoxModelObject> = {<No data fields>},
members of blink::LayoutBox:
m_frameRect = {.......
(gdb) br blink::LayoutObject::LayoutObject
Breakpoint 4 at 0x7f2e1e7ba8b0 (2 locations)
(gdb) p this->layout_box_->debugName()
$6 = "LayoutBlockFlow HTML"
Investigation:
I've tried to compare gdb_index generated by gdb, and by gold.
I dump the indexes with:
> objdump --dwarf=gdb_index
They look very different.
gdb_index produced by gold is 1.7MB, filled with lines
that look suspicions such as:
[3115] SafeReadBits: 2828 [no symbol information]
[3117] axisAttributeGetter: 2261 [no symbol information]
[3119] returnValueAttributeSetterCallback:
2158 [no symbol information]
2164 [no symbol information]
2213 [no symbol information]
gdb_index generated by gdb is 7MB, and looks reasonable:
[155610] blink::EventTypeNames::cached: 113 [global variable]
[155612] blink::Member<blink::CSSRuleList>::Member: 287 [global function]
[155613] blink::installV8HTMLDataListElementTemplate: 2211 [static function]
[155618] blink::GarbageCollected<blink::HTMLParserScheduler>::operator new:
1103 [global function]
I'd be happy to help work on this.
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From: "binarycrusader at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21097] New: can't disambiguate between enum and other
types for rust
Date: Tue, 31 Jan 2017 21:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21097
Bug ID: 21097
Summary: can't disambiguate between enum and other types for
rust
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
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I'm working on a port of rust to another platform and I'm trying to debug a
crash in one of the internal functions.
I built a copy of gdb 7.12.1 and was trying to figure out the syntax for
specifying types when printing values.
This seems to work for the most part:
(gdb) ptype syntax::ast::Ident
type = struct syntax::ast::Ident {
name: syntax::symbol::Symbol,
ctxt: syntax::ext::hygiene::SyntaxContext,
}
However, some cases produce unexpected results:
(gdb) ptype syntax::ast::Mod
type = struct syntax::ast::Mod {
RUST$ENUM$DISR: syntax::ast::ItemKind,
__0: syntax::ast::Mod,
}
Does not match what I expect from src/libsyntax/ast.rs:
pub struct Mod {
/// A span from the first token past `{` to the last token until `}`.
/// For `mod foo;`, the inner span ranges from the first token
/// to the last token in the external file.
pub inner: Span,
pub items: Vec<P<Item>>,
}
Is this expected? What are the caveats when attempting to debug the rust
compiler itself? The rust compiler was built with debug info and without
optimizations enabled for debugging purposes.
Bug 20168 seems related.
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Tue, 31 Jan 2017 21:21:00 -0000
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Shawn Walker-Salas <binarycrusader at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at sourceware dot org
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Tue, 31 Jan 2017 21:35:00 -0000
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--- Comment #1 from Shawn Walker-Salas <binarycrusader at gmail dot com> ---
Another respondent to where I originally posted this query pointed out that
"Your ptype is showing the enum variant ItemKind::Mod and not the type Mod,
both are from syntax::ast."
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
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Danek Duvall <danek.duvall at oracle dot com> changed:
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----------------------------------------------------------------------------
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Subject: [Bug gdb/21100] New: clang follow-fork-mode child internal-error
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Bug ID: 21100
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[ tmp]$ cat test.cpp
int main(int argc, char *argv[]) {}
[ tmp]$ gdb -n --args /usr/bin/clang-3.8 -v test.cpp -o test.out
GNU gdb (GDB) Fedora 7.12-29.fc25
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/clang-3.8...Reading symbols from
/usr/bin/clang-3.8...(no debugging symbols found)...done.
(no debugging symbols found)...done.
Missing separate debuginfos, use: dnf debuginfo-install
clang-3.8.0-2.fc25.x86_64
(gdb) set follow-fork-mode child
(gdb) r
Starting program: /usr/bin/clang-3.8 -v test.cpp -o test.out
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
clang version 3.8.0 (tags/RELEASE_380/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
Found candidate GCC installation: /usr/bin/../lib/gcc/x86_64-redhat-linux/6.2.1
Found candidate GCC installation: /usr/lib/gcc/x86_64-redhat-linux/6.2.1
Selected GCC installation: /usr/bin/../lib/gcc/x86_64-redhat-linux/6.2.1
Candidate multilib: .;@m64
Candidate multilib: 32;@m32
Selected multilib: .;@m64
"/usr/bin/clang-3.8" -cc1 -triple x86_64-unknown-linux-gnu -emit-obj
-mrelax-all -disable-free -disable-llvm-verifier -main-file-name test.cpp
-mrelocation-model static -mthread-model posix -mdisable-fp-elim -fmath-errno
-masm-verbose -mconstructor-aliases -munwind-tables -fuse-init-array
-target-cpu x86-64 -v -dwarf-column-info -debugger-tuning=gdb -resource-dir
/usr/bin/../lib64/clang/3.8.0 -internal-isystem
/usr/bin/../lib/gcc/x86_64-redhat-linux/6.2.1/../../../../include/c++/6.2.1
-internal-isystem
/usr/bin/../lib/gcc/x86_64-redhat-linux/6.2.1/../../../../include/c++/6.2.1/x86_64-redhat-linux
-internal-isystem
/usr/bin/../lib/gcc/x86_64-redhat-linux/6.2.1/../../../../include/c++/6.2.1/backward
-internal-isystem /usr/local/include -internal-isystem
/usr/bin/../lib64/clang/3.8.0/include -internal-externc-isystem /include
-internal-externc-isystem /usr/include -fdeprecated-macro
-fdebug-compilation-dir /tmp -ferror-limit 19 -fmessage-length 203
-fobjc-runtime=gcc -fcxx-exceptions -fexceptions -fdiagnostics-show-option -o
/tmp/test-580659.o -x c++ test.cpp
[New process 21394]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
process 21394 is executing new program: /usr/bin/clang-3.8
../../gdb/breakpoint.c:13853: internal-error: void
delete_breakpoint(breakpoint*): Assertion `bpt != NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
../../gdb/breakpoint.c:13853: internal-error: void
delete_breakpoint(breakpoint*): Assertion `bpt != NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
clang-3.8: error: unable to execute command: Killed
clang-3.8: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.8.0 (tags/RELEASE_380/final)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /usr/bin
clang-3.8: note: diagnostic msg: PLEASE submit a bug report to and include the
crash backtrace, preprocessed source, and associated run script.
********************
PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT:
Preprocessed source(s) and associated run script(s) are located at:
clang-3.8: note: diagnostic msg: /tmp/test-e36013.cpp
clang-3.8: note: diagnostic msg: /tmp/test-e36013.sh
clang-3.8: note: diagnostic msg:
********************
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To: gdb-prs@sourceware.org
Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Wed, 01 Feb 2017 23:24:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-02-01
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Confirmed even with my relatively old rustc build.
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Wed, 01 Feb 2017 23:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21097
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
I see two definitions of Mod at the same level in the debuginfo.
I didn't investigate further but this is in keeping with comment#1.
I think there's a rustc bug open about this already, I will dig it up later.
<3><196df>: Abbrev Number: 29 (DW_TAG_structure_type)
<196e0> DW_AT_name : (indirect string, offset: 0x1c7f5f): Mod
<196e4> DW_AT_byte_size : 48
<4><196e5>: Abbrev Number: 26 (DW_TAG_member)
<196e6> DW_AT_name : (indirect string, offset: 0x154):
RUST$ENUM$DISR
<196ea> DW_AT_type : <0x16dc0>
<196ee> DW_AT_data_member_location: 0
<4><196ef>: Abbrev Number: 26 (DW_TAG_member)
<196f0> DW_AT_name : (indirect string, offset: 0xe8): __0
<196f4> DW_AT_type : <0x196fa>
<196f8> DW_AT_data_member_location: 8
<4><196f9>: Abbrev Number: 0
<3><196fa>: Abbrev Number: 29 (DW_TAG_structure_type)
<196fb> DW_AT_name : (indirect string, offset: 0x1c7f5f): Mod
<196ff> DW_AT_byte_size : 40
<4><19700>: Abbrev Number: 26 (DW_TAG_member)
<19701> DW_AT_name : (indirect string, offset: 0x4c0f): inner
<19705> DW_AT_type : <0x1fad05>
<19709> DW_AT_data_member_location: 0
<4><1970a>: Abbrev Number: 26 (DW_TAG_member)
<1970b> DW_AT_name : (indirect string, offset: 0x33cd): items
<1970f> DW_AT_type : <0x1c25bd>
<19713> DW_AT_data_member_location: 16
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
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Date: Thu, 02 Feb 2017 04:26:00 -0000
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
Maybe it is https://github.com/rust-lang/rust/issues/32924
That seems related, though the example there is a bit different.
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Thu, 02 Feb 2017 16:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21097
--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
I can get the same unusual debuginfo from a simple test:
pub struct Mod {
v: i32
}
pub enum ItemKind {
Mod(Mod)
}
fn x() -> ItemKind {
return ItemKind::Mod(Mod{v: 23});
}
pub fn main() {
match x() {
ItemKind::Mod(z) => {
println!("{}", z.v);
}
}
}
This yields:
<2><5d>: Abbrev Number: 7 (DW_TAG_structure_type)
<5e> DW_AT_name : (indirect string, offset: 0x353): Mod
<62> DW_AT_byte_size : 4
<3><63>: Abbrev Number: 8 (DW_TAG_member)
<64> DW_AT_name : (indirect string, offset: 0x141): __0
<68> DW_AT_type : <0x6e>
<6c> DW_AT_data_member_location: 0
<3><6d>: Abbrev Number: 0
<2><6e>: Abbrev Number: 7 (DW_TAG_structure_type)
<6f> DW_AT_name : (indirect string, offset: 0x353): Mod
<73> DW_AT_byte_size : 4
<3><74>: Abbrev Number: 8 (DW_TAG_member)
<75> DW_AT_name : (indirect string, offset: 0x351): v
<79> DW_AT_type : <0x5e9>
<7d> DW_AT_data_member_location: 0
<3><7e>: Abbrev Number: 0
However, I couldn't get gdb to print the wrong type here.
So, something else must be going on.
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
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Date: Thu, 02 Feb 2017 17:02:00 -0000
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--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
I had an outdated gdb. With my simple test case and a new
gdb build I get:
(gdb) ptype q::Mod
type = struct q::Mod (
q::Mod,
)
... which is the wrong Mod.
Also the output here is weird. Ideally it would print Mod(q::Mod).
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Subject: [Bug gdb/21103] New: Invalid read in read_dbx_symtab
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Bug ID: 21103
Summary: Invalid read in read_dbx_symtab
Product: gdb
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Created attachment 9792
--> https://sourceware.org/bugzilla/attachment.cgi?id=9792&action=edit
read_dbx_symtab invalid read
Hi there!
I've been fuzzing gdb with American Fuzzy Lop and AddressSanitizer. The
attached file causes a segmentation fault due to an invalid read.
Let me know if I should provide any additional information.
GNU gdb (GDB) 7.12.50.20170131-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
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For help, type "help".
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Reading symbols from
id:000013,sig:06,src:003207,op:havoc,rep:16...=================================================================
==23107==ERROR: AddressSanitizer: global-buffer-overflow on address
0x000002451444 at pc 0xb28dfb bp 0x7fff0614c4e0 sp 0x7fff0614c4d8
READ of size 1 at 0x000002451444 thread T0
#0 0xb28dfa in read_dbx_symtab /home/maxi/binutils-gdb/gdb/dbxread.c:1125
#1 0xb298f3 in dbx_symfile_read /home/maxi/binutils-gdb/gdb/dbxread.c:548
#2 0x1182430 in read_symbols /home/maxi/binutils-gdb/gdb/symfile.c:870
#3 0x1183869 in syms_from_objfile_1
/home/maxi/binutils-gdb/gdb/symfile.c:1071
#4 0x1183869 in syms_from_objfile
/home/maxi/binutils-gdb/gdb/symfile.c:1087
#5 0x1183869 in symbol_file_add_with_addrs
/home/maxi/binutils-gdb/gdb/symfile.c:1186
#6 0x11872ae in symbol_file_add_from_bfd
/home/maxi/binutils-gdb/gdb/symfile.c:1277
#7 0x11872ae in symbol_file_add /home/maxi/binutils-gdb/gdb/symfile.c:1290
#8 0x11872ae in symbol_file_add_main_1
/home/maxi/binutils-gdb/gdb/symfile.c:1313
#9 0x11872ae in symbol_file_add_main(char const*,
enum_flags<symfile_add_flag>) /home/maxi/binutils-gdb/gdb/symfile.c:1304
#10 0xf494d0 in symbol_file_add_main_adapter
/home/maxi/binutils-gdb/gdb/main.c:427
#11 0xf49c87 in catch_command_errors_const
/home/maxi/binutils-gdb/gdb/main.c:403
#12 0xf4c903 in captured_main_1 /home/maxi/binutils-gdb/gdb/main.c:1045
#13 0xf4c903 in captured_main /home/maxi/binutils-gdb/gdb/main.c:1140
#14 0xf4c903 in gdb_main(captured_main_args*)
/home/maxi/binutils-gdb/gdb/main.c:1158
#15 0x44bfaa in main /home/maxi/binutils-gdb/gdb/gdb.c:32
#16 0x7f6c80edfb44 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b44)
#17 0x45e6ae (/home/maxi/binutils-gdb/gdb/gdb+0x45e6ae)
0x000002451444 is located 28 bytes to the left of global variable
'bincls_allocated' from 'dbxread.c' (0x2451460) of size 4
0x000002451444 is located 4 bytes to the right of global variable 'symbuf' from
'dbxread.c' (0x2445440) of size 49152
SUMMARY: AddressSanitizer: global-buffer-overflow
/home/maxi/binutils-gdb/gdb/dbxread.c:1125 read_dbx_symtab
Shadow bytes around the buggy address:
0x000080482230: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080482240: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080482250: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080482260: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x000080482270: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x000080482280: 00 00 00 00 00 00 00 00[f9]f9 f9 f9 04 f9 f9 f9
0x000080482290: f9 f9 f9 f9 00 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
0x0000804822a0: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
0x0000804822b0: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9
0x0000804822c0: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 04 f9 f9 f9
0x0000804822d0: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 f9 f9 f9
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Contiguous container OOB:fc
ASan internal: fe
==23107==ABORTING
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Subject: [Bug gdb/21103] Invalid read in read_dbx_symtab
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Maximiliano Gomez Vidal <mvidal at gmail dot com> changed:
What |Removed |Added
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From: "linasvepstas at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug guile/21104] New: 7.12.1 does not compile with latest guile
(2.1.6)
Date: Thu, 02 Feb 2017 21:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21104
Bug ID: 21104
Summary: 7.12.1 does not compile with latest guile (2.1.6)
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
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GDB version 7.12.1 (January 2017 tarball) does not compile with the latest
guile (version 2.1.6) -- it appears that gdb is using a variety of functions
that are now deprecated, and accessing structures that are no longer externally
visible.
For example:
../../gdb/guile/scm-ports.c:1097:41: error: invalid use of incomplete type
‘scm_t_port {aka struct scm_t_port}’
no surprise -- struct scm_t_port is no longer defined in libguile/ports.h --
there's only a forward declaration, and the structure itself is now opaque.
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
Date: Thu, 02 Feb 2017 21:29:00 -0000
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Linas Vepstas <linasvepstas at gmail dot com> changed:
What |Removed |Added
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>From gdb-prs-return-20926-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 03 04:11:40 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Fri, 03 Feb 2017 04:11:00 -0000
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--- Comment #7 from Tom Tromey <tromey at sourceware dot org> ---
> Also the output here is weird. Ideally it would print Mod(q::Mod).
Err... we shouldn't really access this directly.
But 'ptype q::ItemKind' prints:
type = enum q::ItemKind {
Mod,
}
... where I think Mod(Mod) would perhaps be more useful.
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>From gdb-prs-return-20927-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 03 04:26:04 2017
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Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Fri, 03 Feb 2017 04:26:00 -0000
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--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Tom Tromey from comment #7)
> But 'ptype q::ItemKind' prints:
This happens because the DWARF for ItemKind doesn't have a name for
the first member.
<2><50>: Abbrev Number: 5 (DW_TAG_union_type)
<51> DW_AT_name : (indirect string, offset: 0x357): ItemKind
<55> DW_AT_byte_size : 4
<3><56>: Abbrev Number: 6 (DW_TAG_member)
<57> DW_AT_type : <0x5d>
<5b> DW_AT_data_member_location: 0
<3><5c>: Abbrev Number: 0
The "skip_to" logic in rust_print_type is wrong for this type.
Manually setting skip_to=0 makes it print the right thing.
Maybe this code is assuming that an enum must have more than one
member.
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>From gdb-prs-return-20928-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 03 12:01:29 2017
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From: "currygt52 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/21106] New: Ctrl-C can not stop target during some
file-IO
Date: Fri, 03 Feb 2017 12:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21106
Bug ID: 21106
Summary: Ctrl-C can not stop target during some file-IO
Product: gdb
Version: HEAD
Status: UNCONFIRMED
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Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
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Hi,
My program uses file-IO to output a large buffer.
I expect the pressed ctrl-c will stop the target during the WRITE file-IO.
gdb behaves differently according to different versions.
Current GDB on mainline will not stop target, bug previous GDB (7.11) will do
this.
Please help to check which is correct.
[Code]
#include <unistd.h>
#include <string.h>
#define SZ 4096000
char buf[SZ];
int main(void)
{
memset (buf, '1', SZ);
write (STDOUT_FILENO, buf, SZ);
return 0;
}
[version HEAD]
Sending packet: $m1daca8,800#23...Ack
^CPacket received: 313131...313131
Quit
Sending packet: $F-1,4#04...Ack
Packet received: Fclose,00000000
Sending packet: $F0#76...Ack
Packet received: Fclose,00000001
Sending packet: $F0#76...Ack
Packet received: W00
[Inferior 1 (Remote target) exited normally]
[version 7.11]
Sending packet: $ma34a8,800#92...Ack
Packet received: 313131...313131^CQuit
Sending packet: $F-1,4,C#73...Ack
Packet received: T02
Sending packet: $g#67...Ack
Packet received:
ffffffffb4ffff07080000000100000005000000dca3010000803e00b4ffff070000000000000000000000000000000000000000b0ffff07298900002884000073010020
Sending packet: $m8428,4#a3...Ack
Packet received: 0446631c
Sending packet: $qfThreadInfo#bb...Ack
Packet received: m1
Sending packet: $qsThreadInfo#c8...Ack
Packet received: l
Program received signal SIGINT, Interrupt.
0x00008428 in _write ()
(gdb) c
Continuing.
Sending packet: $vCont;c#a8...Ack
Packet received: Fclose,00000000
Sending packet: $F0#76...Ack
Packet received: Fclose,00000001
Sending packet: $F0#76...Ack
Packet received: W00
[Inferior 1 (Remote target) exited normally]
[Step to reproduce]
arm-none-eabi-gcc -O0 -g -mthumb -mcpu=cortex-m3 -specs=rdimon.specs -lrdimon
-o write write.c
qemu-system-arm -machine versatilepb -cpu cortex-m3 -nographic -semihosting
-kernel write -S -gdb tcp::8888
gdb) target remote :8888, press ctrl-c immediately after sending continue
command.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21097] can't disambiguate between enum and other types for
rust
Date: Sat, 04 Feb 2017 05:23:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f0fd41c1926984fd1a524ff551286cba694539a0
commit f0fd41c1926984fd1a524ff551286cba694539a0
Author: Tom Tromey <tom@tromey.com>
Date: Fri Feb 3 22:11:46 2017 -0700
Fix ptype of single-member Rust enums
While looking into PR rust/21097, I found that ptype of a
single-element enum in Rust did not always format the result properly.
In particular, it would leave out the members of a tuple struct.
Further testing showed that it also did the wrong thing for ordinary
struct members as well.
This patch fixes these problems. I'm marking it as being associated
with the PR, since that is where the discovery was made; but this
doesn't actually fix that PR (which I think ultimately is due to a
Rust compiler bug).
Built and regtested on x86-64 Fedora 25, using the system Rust
compiler. I'm checking this in.
2017-02-03 Tom Tromey <tom@tromey.com>
PR rust/21097:
* rust-lang.c (rust_print_type) <TYPE_CODE_UNION>: Handle enums
with a single member.
2017-02-03 Tom Tromey <tom@tromey.com>
PR rust/21097:
* gdb.rust/simple.exp: Add new tests.
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Subject: [Bug tdep/20936] provide and use sparc32 and sparc64 target
description XML files
Date: Mon, 06 Feb 2017 07:49:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jose E. Marchesi
<jemarch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3f7b46f2daa6c396564d786bda9c81e66d4b9278
commit 3f7b46f2daa6c396564d786bda9c81e66d4b9278
Author: Ivo Raisr <ivo.raisr@oracle.com>
Date: Sun Feb 5 23:44:03 2017 -0800
gdb: provide and use sparc{32,64} target description XML files.
gdb/ChangeLog:
2017-02-06 Ivo Raisr <ivo.raisr@oracle.com>
PR tdep/20936
Provide and use sparc32 and sparc64 target description XML files.
* features/sparc/sparc32-cp0.xml, features/sparc/sparc32-cpu.xml,
features/sparc/sparc32-fpu.xml: New files for sparc 32-bit.
* features/sparc/sparc64-cp0.xml, features/sparc/sparc64-cpu.xml,
features/sparc/sparc64-fpu.xml: New files for sparc 64-bit.
* features/sparc/sparc32-solaris.xml: New file.
* features/sparc/sparc64-solaris.xml: New file.
* features/sparc/sparc32-solaris.c: Generated.
* features/sparc/sparc64-solaris.c: Generated.
* sparc-tdep.h: Account for differences in target descriptions.
* sparc-tdep.c (sparc32_register_name): Use target provided registers.
(sparc32_register_type): Use target provided registers.
(validate_tdesc_registers): New function.
(sparc32_gdbarch_init): Use tdesc_has_registers.
Set pseudoregister functions.
* sparc64-tdep.c (sparc64_register_name): Use target provided
registers.
(sparc64_register_type): Use target provided registers.
(sparc64_init_abi): Set pseudoregister functions.
gdb/doc/ChangeLog:
2017-02-06 Ivo Raisr <ivo.raisr@oracle.com>
PR tdep/20936
* gdb.texinfo: (Standard Target Features): Document SPARC features.
(Sparc Features): New node.
gdb/testsuite/ChangeLog:
2017-02-06 Ivo Raisr <ivo.raisr@oracle.com>
PR tdep/20936
* gdb.xml/tdesc-regs.exp: Provide sparc core registers for the tests.
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>From gdb-prs-return-20931-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Feb 06 09:16:24 2017
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To: gdb-prs@sourceware.org
Subject: [Bug record/21005] Process record does not support instruction GDB
7.12 (rdrand %eax)
Date: Mon, 06 Feb 2017 09:16:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Luis Machado <luisgpm@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=20b477a75c00de06a92b9577fd74416699d2c37f
commit 20b477a75c00de06a92b9577fd74416699d2c37f
Author: Luis Machado <lgustavo@codesourcery.com>
Date: Mon Feb 6 03:12:00 2017 -0600
[BZ 21005] Add support for Intel 64 rdrand and rdseed record/replay
This patch addresses BZ 21005, which is gdb failing to recognize an rdrand
instruction.
It enables support for both rdrand and rdseed and handles extended register
addressing (R8~R15) for 16-bit, 32-bit and 64-bit.
gdb/ChangeLog
2017-02-06 Luis Machado <lgustavo@codesourcery.com>
* NEWS: Mention support for record/replay of Intel 64 rdrand and
rdseed instructions.
i386-tdep.c (i386_process_record): Handle Intel 64 rdrand and rseed.
gdb/testsuite/ChangeLog:
2017-02-06 Luis Machado <lgustavo@codesourcery.com>
* gdb.reverse/insn-reverse.c: Include insn-reverse-x86.c.
* gdb.reverse/insn-reverse-x86.c: New file.
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>From gdb-prs-return-20932-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Feb 06 09:18:39 2017
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Subject: [Bug record/21005] Process record does not support instruction GDB
7.12 (rdrand %eax)
Date: Mon, 06 Feb 2017 09:18:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
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--- Comment #4 from Luis Machado <lgustavo at codesourcery dot com> ---
Fixed in GDB master.
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>From gdb-prs-return-20933-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Feb 07 17:22:29 2017
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Subject: [Bug gdb/16188] Verify PTRACE_TRACEME succeeded?
Date: Tue, 07 Feb 2017 17:22:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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CC| |sergiodj at redhat dot com
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I'll work on this.
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>From gdb-prs-return-20934-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 08 10:21:24 2017
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From: "eriksohns at 123mail dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21114] New: gdb crash
Date: Wed, 08 Feb 2017 10:21:00 -0000
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Bug ID: 21114
Summary: gdb crash
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Version: 7.7
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I have a recurring problem debugging an application with gdb (using qtcreator);
the debugger event log contains the following context information:
=breakpoint-modified,bkpt={number="6",type="breakpoint",disp="keep",enabled="y",addr="<MULTIPLE>",times="0",original-location="abort"},{number="6.1",enabled="y",addr="0x00007ffff11c5300",func="__GI_abort",file="abort.c",fullname="/build/glibc-qK83Be/glibc-2.19/stdlib/abort.c",line="51",thread-groups=["i1"]},{number="6.2",enabled="y",addr="0x00007ffff11c5300",func="__GI_abort",file="abort.c",fullname="/build/glibc-qK83Be/glibc-2.19/stdlib/abort.c",line="51",thread-groups=["i2"]}
>~"/build/gdb-2hEJVN/gdb-7.7.1+dfsg/gdb/record-full.c:1818: internal-error: record_full_remove_breakpoint: removing unknown breakpoint\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nQuit this debugging session? "
>~"(y or n) [answered Y; input not from terminal]\n"
>~"/build/gdb-2hEJVN/gdb-7.7.1+dfsg/gdb/record-full.c:1818: internal-error: record_full_remove_breakpoint: removing unknown breakpoint\nA problem internal to GDB has been detected,\nfurther debugging may prove unreliable.\nCreate a core file of GDB? "
>~"(y or n) [answered Y; input not from terminal]\n"
dHANDLE GDB ERROR: The gdb process was ended forcefully
dGDB PROCESS FINISHED, status 1, code 0
dThe gdb process exited somewhat unexpectedly.
dNOTE: ENGINE SPONTANEOUS SHUTDOWN
dState changed BY FORCE from InferiorRunOk(11) to EngineShutdownOk(22) [master]
dState changed from EngineShutdownOk(22) to DebuggerFinished(23) [master]
dQUEUE: FINISH DEBUGGER
dNOTE: FINISH DEBUGGER
dHANDLE RUNCONTROL FINISHED
sDebugger finished.
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>From gdb-prs-return-20935-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 08 22:55:53 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21117] New: Occasional wrong thread numbering when
following an exec
Date: Wed, 08 Feb 2017 22:55:00 -0000
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Bug ID: 21117
Summary: Occasional wrong thread numbering when following an
exec
Product: gdb
Version: HEAD
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I was playing with the mi-nsthrexec test, and noticed something odd.
I am using the test executable like this:
$ ./gdb -nx testsuite/outputs/gdb.mi/mi-nsthrexec/mi-nsthrexec -ex "b main"
-ex "r"
and I just use the "continue" command over and over. The spawned thread calls
exec, so each time we just come back to main. Post-exec, we expect to always
see thread 1 hitting the breakpoint at main. That's what happens most of the
time, but not always. Here's the result:
http://pastebin.com/raw/tQYnBfEV
As you can see, it goes from "Thread 1" to "Thread 12" to "Thread 49", etc.
AFAIK, when any thread of a process execs, it's the main thread (the one for
which tgid==pid in Linux terminology, pid==lwp in GDB terminology) that
survives, so we should always preserve Thread 1.
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>From gdb-prs-return-20936-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 09 11:00:58 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21117] Occasional wrong thread numbering when following
an exec
Date: Thu, 09 Feb 2017 11:00:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
>From the kernel's perspective, it should be the leader lwp that hits the
breakpoint too, so either a kernel bug, or a gdb bug. From your logs, looks
like the latter.
>From the logs, we can tell that the leader/process pid is "19676":
> process 19676 is executing new program: /home/simark/build/binutils-
> ^^^^^
I think that there's a good hint here, just before the first time we see a
thread != 1:
> [New Thread 0x7ffff751a700 (LWP 19697)]
> [Thread 0x7ffff7f8b700 (LWP 19676) exited] <<<< LEADER DETECTED AS EXITED
> [New LWP 19676] <<<< LEADER RE-ADDED
> process 19676 is executing new program: <<<< STILL SAME PID
>
> Thread 10 "mi-nsthrexec" hit Breakpoint 1, main (argc=1, argv=0x7fffffffda98)
So we detected the leader as exited, deleted it (most probably in
linux-nat.c:check_zombie_leaders), and then when we get
the exec event out of the kernel, we re-add the leader thread.
This will give it a new gdb thread number.
A "set debug lin-lwp 1" log probably makes that clearer.
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>From gdb-prs-return-20937-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 09 14:02:21 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21117] Occasional wrong thread numbering when following
an exec
Date: Thu, 09 Feb 2017 14:02:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Note that this isn't a case of a small race window. We have tests that
exercise the case of the leader thread really exits before its child threads.
In which case the leader remains zombie until the children exit. But if one of
the children execs instead, then the leader reappears then.
It may be that the best fix for all of this is to stop deleting the leader
thread when we detect it as zombie, but instead teach the core of gdb about
that state: the thread exists, but you can't do anything with it other than
collect exit status -- and leave the thread around. Easier to do when you
consider only native debugging. Not so simple when you consider target remote
/ RSP too.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21117] Occasional wrong thread numbering when following
an exec
Date: Thu, 09 Feb 2017 14:04:00 -0000
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Note, IIRC, this "detected leader as zombie, so delete it" is what causes a
number of racy failures when testing against gdbserver, around "continue to
exit" tests in several testcases.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21117] Occasional wrong thread numbering when following
an exec
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--- Comment #4 from Simon Marchi <simon.marchi at ericsson dot com> ---
(In reply to Pedro Alves from comment #1)
> From the kernel's perspective, it should be the leader lwp that hits the
> breakpoint too, so either a kernel bug, or a gdb bug. From your logs, looks
> like the latter.
>
> From the logs, we can tell that the leader/process pid is "19676":
>
> > process 19676 is executing new program: /home/simark/build/binutils-
> > ^^^^^
>
> I think that there's a good hint here, just before the first time we see a
> thread != 1:
>
> > [New Thread 0x7ffff751a700 (LWP 19697)]
> > [Thread 0x7ffff7f8b700 (LWP 19676) exited] <<<< LEADER DETECTED AS EXITED
> > [New LWP 19676] <<<< LEADER RE-ADDED
> > process 19676 is executing new program: <<<< STILL SAME PID
> >
> > Thread 10 "mi-nsthrexec" hit Breakpoint 1, main (argc=1, argv=0x7fffffffda98)
>
> So we detected the leader as exited, deleted it (most probably in
> linux-nat.c:check_zombie_leaders), and then when we get
> the exec event out of the kernel, we re-add the leader thread.
> This will give it a new gdb thread number.
>
> A "set debug lin-lwp 1" log probably makes that clearer.
That's exactly what I observed. I put a conditional breakpoint on
delete_thread_1:
(gdb) b delete_thread_1 if ptid.lwp == ptid.pid
the breakpoint triggers when the bug manifests itself. We can see that
delete_thread got called from check_zombie_leaders.
That's exactly what
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21121] New: clock() result is altered by time spent
on the CLI
Date: Thu, 09 Feb 2017 16:30:00 -0000
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Bug ID: 21121
Summary: clock() result is altered by time spent on the CLI
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
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Consider the following:
#include <time.h>
#include <iostream>
int main()
{
const auto start = clock();
volatile auto pepe = start * 3;
++pepe;
std::cout << clock() - start << std::endl;
}
By breaking in the ++pepe line, waiting in the CLI until continuing affects the
results shown.
However, the time while the process is suspended does not affect clock() (while
not debugging).
I think that waiting an arbitrary time in the CLI should not make the behavior
as if clock() keeps counting.
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Subject: [Bug breakpoints/21121] clock() result is altered by time spent on
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Subject: [Bug breakpoints/21121] clock() result is altered by time spent on
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Subject: [Bug breakpoints/9532] let "commands" select more than one
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--- Comment #5 from Daniel Gutson <daniel.gutson at gmail dot com> ---
How has this been implemented?
'help' doesn't explain:
(gdb) help commands
Set commands to be executed when a breakpoint is hit.
Give breakpoint number as argument after "commands".
With no argument, the targeted breakpoint is the last one set.
The commands themselves follow starting on the next line.
Type a line containing "end" to indicate the end of them.
Give "silent" as the first line to make the breakpoint silent;
then no output is printed when it is hit, except what the commands print.
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Subject: [Bug gdb/21051] nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
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Mateusz Lenik <mlen at mlen dot pl> changed:
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--- Comment #1 from Mateusz Lenik <mlen at mlen dot pl> ---
I am also able to reproduce this on both ArchLinux and Gentoo.
7.11 is the earliest version failing with this error I was able to find.
Steps to reproduce in my case:
1) Install ruby and rake
2) touch Rakefile
3) gdb --args ruby -S rake -T
GNU gdb (Gentoo 7.12.1 vanilla) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://bugs.gentoo.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ruby...Reading symbols from
/usr/lib64/debug//usr/bin/ruby23.debug...done.
done.
(gdb) set follow-fork-mode child
(gdb) r
Starting program: /usr/bin/ruby -S rake -T
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff7ff6700 (LWP 26921)]
[New process 26922]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
./nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<https://bugs.gentoo.org/>.
./nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Backtrace from the core:
$ gdb $(which gdb) /var/cores/core.gdb.1486662173
GNU gdb (Gentoo 7.12.1 vanilla) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://bugs.gentoo.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/gdb...Reading symbols from
/usr/lib64/debug//usr/bin/gdb.debug...done.
done.
[New LWP 24243]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `gdb --args ruby -S rake -T'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007efefa67c0e8 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
54 return INLINE_SYSCALL (tgkill, 3, pid, selftid, sig);
(gdb) bt
#0 0x00007efefa67c0e8 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#1 0x00007efefa67d53a in __GI_abort () at abort.c:89
#2 0x0000000000752646 in dump_core () at utils.c:561
#3 0x0000000000754ce9 in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *)
(problem=problem@entry=0x1b47220 <internal_error_problem>, file=<optimized
out>, line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7ffe9b29cf80) at
utils.c:772
#4 0x0000000000754da9 in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7ffe9b29cf80) at
utils.c:798
#5 0x000000000078e527 in internal_error (file=file@entry=0xc929d8
"./nat/x86-linux-dregs.c", line=line@entry=146, fmt=<optimized out>) at
common/errors.c:55
#6 0x000000000056165e in x86_linux_update_debug_registers (lwp=0x351ee30) at
nat/x86-linux-dregs.c:146
#7 0x00000000005520a3 in detach_one_lwp (lp=lp@entry=0x351ee30,
signo_p=signo_p@entry=0x0) at linux-nat.c:1431
#8 0x000000000055239f in detach_callback (lp=0x351ee30, data=<optimized out>)
at linux-nat.c:1489
#9 0x0000000000554ab9 in iterate_over_lwps (filter=...,
callback=callback@entry=0x552360 <detach_callback(lwp_info*, void*)>,
data=data@entry=0x0) at linux-nat.c:984
#10 0x0000000000554ff6 in linux_nat_detach (ops=0x30a40c0, args=0x0,
from_tty=0) at linux-nat.c:1511
#11 0x000000000055b48f in thread_db_detach (ops=<optimized out>, args=0x0,
from_tty=0) at linux-thread-db.c:1099
#12 0x0000000000668eae in handle_vfork_child_exec_or_exit (exec=exec@entry=1)
at infrun.c:976
#13 0x000000000066e53d in handle_inferior_event_1 (ecs=0x7ffe9b29d3f0) at
infrun.c:5334
#14 handle_inferior_event (ecs=ecs@entry=0x7ffe9b29d3f0) at infrun.c:5424
#15 0x00000000006705e6 in fetch_inferior_event (client_data=<optimized out>) at
infrun.c:3972
#16 0x0000000000686865 in gdb_wait_for_event (block=block@entry=0) at
event-loop.c:859
#17 0x0000000000686987 in gdb_do_one_event () at event-loop.c:322
#18 0x0000000000686b05 in gdb_do_one_event () at event-loop.c:360
#19 start_event_loop () at event-loop.c:371
#20 0x0000000000680668 in captured_command_loop (data=data@entry=0x0) at
main.c:324
#21 0x000000000067d383 in catch_errors (func=func@entry=0x680640
<captured_command_loop(void*)>, func_args=func_args@entry=0x0,
errstring=errstring@entry=0x177a56c "", mask=mask@entry=RETURN_MASK_ALL) at
exceptions.c:236
#22 0x00000000006815a6 in captured_main (data=0x7ffe9b29d5c0) at main.c:1149
#23 gdb_main (args=args@entry=0x7ffe9b29d6e0) at main.c:1159
#24 0x0000000000411d15 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
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From: "martingalvan at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21122] New: Documentation mistakes for breakpoint-related
commands
Date: Thu, 09 Feb 2017 18:06:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21122
Bug ID: 21122
Summary: Documentation mistakes for breakpoint-related commands
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: martingalvan at sourceware dot org
Target Milestone: ---
The current documentation states the following:
"Some gdb commands accept a range of breakpoints on which to operate. A
breakpoint range is either a single breakpoint number, like ‘5’, or two such
numbers, in increasing order, separated by a hyphen, like ‘5-7’. When a
breakpoint range is given to a command, all breakpoints in that range are
operated on."
However, this fails to mention that ranges can also be specified as
space-separated lists of breakpoint numbers, like '5 6 7'.
On a related issue, 'help commands' seems to imply that the 'commands' command
can only be applied to a single breakpoint at the time:
(gdb) help commands
Set commands to be executed when a breakpoint is hit.
Give breakpoint number as argument after "commands".
...
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>From gdb-prs-return-20946-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 09 18:07:30 2017
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
commands
Date: Thu, 09 Feb 2017 18:07:00 -0000
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Martin Galvan <martingalvan at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.gutson at gmail dot com,
| |martingalvan at sourceware dot org
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>From gdb-prs-return-20947-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 09 18:30:39 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
commands
Date: Thu, 09 Feb 2017 18:30:00 -0000
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--- Comment #1 from Martin Galvan <martingalvan at sourceware dot org> ---
Created attachment 9796
--> https://sourceware.org/bugzilla/attachment.cgi?id=9796&action=edit
Proposed rewording of the docs
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>From gdb-prs-return-20948-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 09 21:47:21 2017
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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/21126] New: PIE displacement check needs to handle fully
NULL'd GNU_RELRO
Date: Thu, 09 Feb 2017 21:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21126
Bug ID: 21126
Summary: PIE displacement check needs to handle fully NULL'd
GNU_RELRO
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: dje at google dot com
Target Milestone: ---
Evidently strip is now fully NULLing out PT_GNU_RELRO segments (as in even the
segment type is changed to PT_NULL).
svr4_exec_displacement needs to be updated to handle this.
There's no real reason to compare absolutely every segment header in this
sanity check (see svr4_exec_displacement), and the cost to the user of
accidentally getting it wrong is severe (completely unusable debug session).
I think it would be better to let the test pass with a loud warning than to
fail.
[Setting aside a better test which is to just compare the build ids.]
See also PR 11786.
/* Strip modifies the flags and alignment of PT_GNU_RELRO.
CentOS-5 has problems with filesz, memsz as well.
See PR 11786. */
if (phdr2[i].p_type == PT_GNU_RELRO)
{
Elf64_External_Phdr tmp_phdr = *phdrp;
Elf64_External_Phdr tmp_phdr2 = *phdr2p;
memset (tmp_phdr.p_filesz, 0, 8);
memset (tmp_phdr.p_memsz, 0, 8);
memset (tmp_phdr.p_flags, 0, 4);
memset (tmp_phdr.p_align, 0, 8);
memset (tmp_phdr2.p_filesz, 0, 8);
memset (tmp_phdr2.p_memsz, 0, 8);
memset (tmp_phdr2.p_flags, 0, 4);
memset (tmp_phdr2.p_align, 0, 8);
if (memcmp (&tmp_phdr, &tmp_phdr2, sizeof (tmp_phdr))
== 0)
continue;
}
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>From gdb-prs-return-20949-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 10 10:11:23 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
> However, this fails to mention that ranges can also be specified as space-
> separated lists of breakpoint numbers, like '5 6 7'.
That only looks like a range because the numbers are ordered. Say, "7 4 9"
doesn't look like a range to me. I'd call it a "list" instead.
I think it'd be clearer if the section was reworded to speak in terms of
"breakpoint lists". See "thread ID lists" in the manual.
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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Martin Galvan <martingalvan at sourceware dot org> changed:
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----------------------------------------------------------------------------
Attachment #9796|0 |1
is obsolete| |
--- Comment #3 from Martin Galvan <martingalvan at sourceware dot org> ---
Created attachment 9797
--> https://sourceware.org/bugzilla/attachment.cgi?id=9797&action=edit
Proposed rewording of the docs
Rewrote the docs to speak in terms of breakpoint "lists", as it's done with
thread ID lists, and fixed a couple of minor mistakes.
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
In a couple places where it now says "accept a list", it might be worth it to
say "a space-separated list", as I don't think it's mentioned anywhere how
elements are supposedly separated.
We should probably update the "@cindex" entries too, which are still named in
terms of ranges. Maybe keep the ranges ones and add lists ones too.
Otherwise looks great to me, thanks much for doing this, but I can't approve
it. You should post this to gdb-patches, so Eli can review it.
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Galvan
<martingalvan@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=18da0c51da58527152e019924cc5105cd89765d6
commit 18da0c51da58527152e019924cc5105cd89765d6
Author: Martin Galvan <omgalvan.86@gmail.com>
Date: Fri Feb 10 13:37:31 2017 -0300
PR gdb/21122: Fix documentation mistakes for breakpoint commands
Currently, the breakpoint documentation refers to some commands taking
breakpoint
"ranges" as arguments. We discussed this with Pedro and concluded that it
would
be more accurate to speak in terms of breakpoint "lists", whose elements
can optionally
be ranges. I also fixed a couple of minor mistakes in the docs.
gdb/ChangeLog:
* breakpoint.c (_initialize_breakpoint): Update the help description
of the 'commands' command to indicate that it takes a list argument.
gdb/doc/ChangeLog:
* gdb.texinfo (Breakpoints): Reword documentation to speak in terms of
space-separated breakpoint lists. Also add a missing @table command
and @cindex for breakpoint lists.
gdb/testsuite/ChangeLog:
* gdb.base/help.exp: Update match pattern for testing 'help commands'.
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
Martin, I've given your bugzilla account editbugs privileges now, meaning you
should be able to close this. Please give it a try.
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Subject: [Bug gdb/21122] Documentation mistakes for breakpoint-related
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--- Comment #7 from Martin Galvan <martingalvan at sourceware dot org> ---
Done. Thanks!
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Subject: [Bug gdb/20757] gdb: DWARF-5 support
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--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[PATCH 5/8] DWARF-5 basic functionality
https://sourceware.org/ml/gdb-patches/2017-02/msg00303.html
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Subject: [Bug server/13984] gdb stops controlling a thread after "Remote 'g'
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--- Comment #15 from honghe <leopardsaga at gmail dot com> ---
@Mehmet Ali SARIKAYA
You patch works with GDB 7.12 on Ubuntu 14.04.
Thanks!
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Subject: [Bug exp/21162] New: GDB internal error with unbounded array
typecast expression
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GDB crashes with internal error when trying to evaluate the following
expression:
(gdb) p ((char*)(short[]){1})[1]
/home/arnez/src/binutils-gdb/gdb/gdbtypes.c:4722: internal-error: type*
copy_type(const type*): Assertion `TYPE_OBJFILE_OWNED (type)' failed.
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Subject: [Bug python/13598] need a pre-prompt event
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3f77c7691fc5ff92eef90f39bb972f25c7422fb0
commit 3f77c7691fc5ff92eef90f39bb972f25c7422fb0
Author: Tom Tromey <tom@tromey.com>
Date: Wed Apr 29 09:44:24 2015 -0600
PR python/13598 - add before_prompt event
This adds an event that is emitted just before GDB presents a prompt
to the user. This provides Python code a way to react to whatever
changes might have been made by the previous command. For example, in
my GUI I use this to track changes to the selected frame and reflect
them in the UI.
Built and regtested on x86-64 Fedora 23.
gdb/ChangeLog
2017-02-14 Tom Tromey <tom@tromey.com>
PR python/13598:
* python/python.c (gdbpy_before_prompt_hook): Emit before_prompt
event.
* python/py-evts.c (gdbpy_initialize_py_events): Add
before_prompt registry.
* python/py-events.h (events_object) <before_prompt>: New field.
gdb/doc/ChangeLog
2017-02-14 Tom Tromey <tom@tromey.com>
PR python/13598:
* python.texi (Events In Python): Document events.before_prompt.
gdb/testsuite/ChangeLog
2017-02-14 Tom Tromey <tom@tromey.com>
PR python/13598:
* gdb.python/py-events.exp: Add before_prompt event tests.
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |tromey at sourceware dot org
Resolution|--- |FIXED
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Fix checked in.
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>From gdb-prs-return-20960-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Feb 14 22:31:40 2017
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Subject: [Bug exp/21162] GDB internal error with unbounded array typecast
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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>From gdb-prs-return-20961-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 03:27:15 2017
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Joel Brobecker <brobecker at gnat dot com> changed:
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--- Comment #1 from Joel Brobecker <brobecker at gnat dot com> ---
Is this a regression compared to 7.12?
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>From gdb-prs-return-20962-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 03:29:11 2017
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Subject: [Bug build/18294] gdb compilation fails on 32-bit Solaris: largefile
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Joel Brobecker <brobecker at gnat dot com> changed:
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--- Comment #1 from Joel Brobecker <brobecker at gnat dot com> ---
Can you confirm whether GDB 7.12 does better?
Given that this isn't a regression, I don't think this PR should be blocking
for 8.0. In other words, a fix by 8.0 would be great, but we shouldn't block
8.0 because of that (known) issue.
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>From gdb-prs-return-20963-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 03:33:24 2017
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Joel Brobecker <brobecker at gnat dot com> changed:
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--- Comment #9 from Joel Brobecker <brobecker at gnat dot com> ---
Hello. Can you guys tell me whether this PR should be blocking for 8.0? I
couldn't see in the PR description and comments any element that would indicate
that. Thanks!
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>From gdb-prs-return-20964-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 03:36:33 2017
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Joel Brobecker <brobecker at gnat dot com> changed:
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CC| |brobecker at gnat dot com
Target Milestone|8.0 |---
--- Comment #1 from Joel Brobecker <brobecker at gnat dot com> ---
Can you tell us whether the same problem occurs with GDB 7.12 as well?
Also, can you confirm why you selected 8.0 as the "Target Milestone"? For us,
this means this bug is blocking for the 8.0 release creation. But if this isn't
a regression, then I believe this bug to not be blocking. I'll therefore remove
the target milestone now, but feel free to correct me on this.
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>From gdb-prs-return-20965-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 03:37:54 2017
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Joel Brobecker <brobecker at gnat dot com> changed:
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>From gdb-prs-return-20966-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 08:51:36 2017
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Subject: [Bug exp/21162] GDB internal error with unbounded array typecast
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--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Joel Brobecker from comment #1)
> Is this a regression compared to 7.12?
No, 7.12.1 and 7.11.1 fails too.
(gdb) run
Starting program: /home/qiyao/source/gdb-7.11/build-7.11.1/gdb/gdb
Breakpoint 1, main (argc=1, argv=0x7fffffffe648) at
../../gdb-7.11.1/gdb/gdb.c:25
25 {
(gdb) p ((char*)(short[]){1})[1]
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
../../gdb-7.11.1/gdb/gdbtypes.c:4575: internal-error: copy_type: Assertion
`TYPE_OBJFILE_OWNED (type)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
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>From gdb-prs-return-20967-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 11:11:03 2017
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Subject: [Bug threads/19426] in non-stop mode, gdb should sometimes select
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #10 from Pedro Alves <palves at redhat dot com> ---
I don't think it should. Removing the milestone.
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>From gdb-prs-return-20968-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 11:30:39 2017
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Subject: [Bug gdb/21164] New: "maint print symbols,msymbols,psymbols" without
arguments all crash
Date: Wed, 15 Feb 2017 11:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21164
Bug ID: 21164
Summary: "maint print symbols,msymbols,psymbols" without
arguments all crash
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
Target Milestone: ---
Current master,
$ gdb
GNU gdb (GDB) 7.12.50.20170214-git
[....]
(gdb) maint print msymbols
Segmentation fault (core dumped)
Likewise for "maint print psymbols/symbols". Started happening with:
commit 34c41c681f4a0a0dfe0405c7d2aecf458520557a
Author: Doug Evans <xdje42@gmail.com>
AuthorDate: Mon Dec 19 08:33:46 2016 -0800
New syntax for mt print symbols,msymbols,psymbols.
Before that commit:
GNU gdb (GDB) 7.12.50.20161222-git
(gdb) maint print symbols
Arguments missing: an output file name and an optional symbol file name
(gdb) maint print psymbols
print-psymbols takes an output file name and optional symbol file name
(gdb) maint print msymbols
print-msymbols takes an output file name and optional symbol file name
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>From gdb-prs-return-20969-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 11:31:43 2017
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Subject: [Bug gdb/21164] "maint print symbols,msymbols,psymbols" without
arguments all crash
Date: Wed, 15 Feb 2017 11:31:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
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>From gdb-prs-return-20971-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 12:10:29 2017
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Subject: [Bug gdb/21165] [8.0 Regression] FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
Date: Wed, 15 Feb 2017 12:10:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
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>From gdb-prs-return-20970-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 12:10:22 2017
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Subject: [Bug gdb/21165] New: [8.0 Regression] FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
Date: Wed, 15 Feb 2017 12:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21165
Bug ID: 21165
Summary: [8.0 Regression] FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB
internal error)
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
Target Milestone: ---
Diffing current master (7.12.50.20170215-git) gdb.sum against a log from
20161209, I see this regression:
-PASS: gdb.ada/info_locals_renaming.exp: compilation foo.adb
-FAIL: gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
gdb.log shows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
(gdb) info locals
gv = /home/pedro/gdb/mygit/src/gdb/value.c:372: internal-error: int
value_bits_any_optimized_out(const value*, int, int): Assertion `!value->lazy'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.ada/info_locals_renaming.exp:
info locals (GDB internal error)
Resyncing due to internal error.
n
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/home/pedro/gdb/mygit/src/gdb/value.c:372: internal-error: int
value_bits_any_optimized_out(const value*, int, int): Assertion `!value->lazy'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
(gdb) testcase
/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.ada/info_locals_renaming.exp
completed in 1 seconds
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Bisecting points at:
e8b24d9ff5b9419fc079f5fe975fac6f499f8bfb is the first bad commit
commit e8b24d9ff5b9419fc079f5fe975fac6f499f8bfb
Author: Yao Qi <yao.qi@linaro.org>
Date: Tue Nov 8 16:02:42 2016 +0000
Remove parameter valaddr from la_val_print
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>From gdb-prs-return-20972-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 12:55:15 2017
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Subject: [Bug c++/18164] New version of GDB causes qDebug() and related
functions not to work in Qt Creator.
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
I'd also be useful to expand on what does "not work" mean. From the available
info alone, I have no idea.
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>From gdb-prs-return-20973-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 14:53:41 2017
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Subject: [Bug c++/18164] New version of GDB causes qDebug() and related
functions not to work in Qt Creator.
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>From gdb-prs-return-20975-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 15:29:59 2017
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
Date: Wed, 15 Feb 2017 15:29:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
gdb.log shows:
(gdb) si
Program received signal SIGILL, Illegal instruction.
rdseed () at
/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.reverse/insn-reverse-x86.c:154
154 __asm__ volatile ("rdseed %%ax;" : "=r" (seed));
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>From gdb-prs-return-20974-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 15 15:29:19 2017
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Subject: [Bug gdb/21166] New: FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i
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Bug ID: 21166
Summary: FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
Product: gdb
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On current master, on x86-64 Fedora 23, I'm seeing this:
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
[... many more of the same ... ]
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: compare registers on insn 0:mov
0x2008b7(%rip),%eax # 0x601058 <supports_rdrand>
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: compare registers on insn 1:test
%eax,%eax
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: compare registers on insn 2:je
0x4008b3 <rdseed+284>
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: compare registers on insn 3:rdseed
%ax
+FAIL: gdb.reverse/insn-reverse.exp: rdseed: compare registers on insn 4:rdseed
%ax
+ERROR: tcl error sourcing
/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.reverse/insn-reverse.exp.
+ERROR: can't read "insn_array(5)": no such element in array
+ while executing
+"gdb_assert { [string compare $pre_regs($i) $post_regs($i)] == 0 } "compare
registers on insn $i:$insn_array($i)""
+ ("uplevel" body line 47)
+ invoked from within
+"uplevel 1 $body"
+ invoked from within
+"with_test_prefix "$func" {
+ gdb_breakpoint $func
+ gdb_test "continue"
+ set last_insn ""
+ set test "disassemble $func"
+ gdb_test_multiple $test $test ..."
+ (procedure "test" line 5)
+ invoked from within
+"test $testcase"
+ (file
"/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.reverse/insn-reverse.exp" line
128)
+ invoked from within
+"source /home/pedro/gdb/mygit/src/gdb/testsuite/gdb.reverse/insn-reverse.exp"
+ ("uplevel" body line 1)
+ invoked from within
+"uplevel #0 source
/home/pedro/gdb/mygit/src/gdb/testsuite/gdb.reverse/insn-reverse.exp"
+ invoked from within
+"catch "uplevel #0 source $test_file_name""
src/gdb/testsuite/gdb.reverse/machinestate.exp ...
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
Date: Wed, 15 Feb 2017 15:30:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 60
model name : Intel(R) Core(TM) i7-4810MQ CPU @ 2.80GHz
stepping : 3
microcode : 0x20
cpu MHz : 3645.776
cache size : 6144 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est
tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm epb tpr_shadow vnmi
flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid
xsaveopt dtherm ida arat pln pts
bugs :
bogomips : 5586.97
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
[....]
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21164] "maint print symbols,msymbols,psymbols" without
arguments all crash
Date: Wed, 15 Feb 2017 19:19:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Working on this.
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From: "antoine.tremblay at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21169] New: GDBServer on ARM can crash the inferior while
single stepping
Date: Thu, 16 Feb 2017 00:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21169
Bug ID: 21169
Summary: GDBServer on ARM can crash the inferior while single
stepping
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: antoine.tremblay at ericsson dot com
Target Milestone: ---
Single stepping on ARM with GDBServer can crash the inferior.
The inferior will cash with SIGILL or SIGSEGV.
This is due to the single stepping breakpoint insertion not being atomic in
certain situations like inserting a thumb2 breakpoint on a 2 byte aligned
address.
See this thread on the mailing list for more info:
https://sourceware.org/ml/gdb-patches/2017-01/msg00650.html
See also:
https://sourceware.org/ml/gdb-patches/2016-11/msg00230.html
This is a regression compared to previous GDB since before GDBServer did not do
the single stepping itself. GDB controlled the single-stepping and thus all
threads are stopped when modifying memory, this avoided this crash.
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Subject: [Bug gdb/21169] GDBServer on ARM can crash the inferior while single
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>From gdb-prs-return-20980-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 16 00:56:02 2017
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Subject: [Bug gdb/21164] "maint print symbols,msymbols,psymbols" without
arguments all crash
Date: Thu, 16 Feb 2017 00:56:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=99e8a4f9f8832da0f37c6f35b11629b01897800d
commit 99e8a4f9f8832da0f37c6f35b11629b01897800d
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Wed Feb 15 15:08:19 2017 -0500
PR gdb/21164: maint print {symbols,msymbols,psymbols} without args crash
This is a fix for PR gdb/21164. The problem started to happen after:
commit 34c41c681f4a0a0dfe0405c7d2aecf458520557a
Author: Doug Evans <xdje42@gmail.com>
AuthorDate: Mon Dec 19 08:33:46 2016 -0800
New syntax for mt print symbols,msymbols,psymbols.
This change introduced new syntax for the mentioned commands, and
improved the parsing of arguments by using 'gdb_buildargv'. However,
it is necessary to check if the argv being built is not NULL, which
can happen if the user doesn't provide any arguments to these
commands.
gdb/ChangeLog:
2017-02-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21164
* psymtab.c (maintenance_print_psymbols): Verify if 'argv' is not
NULL before using it.
* symmisc.c (maintenance_print_symbols): Likewise.
(maintenance_print_msymbols): Likewise.
gdb/testsuite/ChangeLog:
gdb/ChangeLog:
2017-02-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21164
* gdb.base/maint.exp: Add testcases for when the commands do
not have arguments.
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Subject: [Bug gdb/21164] "maint print symbols,msymbols,psymbols" without
arguments all crash
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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Subject: [Bug exp/21162] GDB internal error with unbounded array typecast
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Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |---
--- Comment #3 from Joel Brobecker <brobecker at gnat dot com> ---
Thanks for confirming, Yao. So this PR should not be blocking for 8.0, and I
will remove the target milestone. Of course, we still have plenty of time until
branching and eventually release, so if it gets fixed by then, all the better!
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Subject: [Bug gdb/21170] New: Selected architecture arm is not compatible
with reported target architecture i386:x86-64
Date: Thu, 16 Feb 2017 09:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21170
Bug ID: 21170
Summary: Selected architecture arm is not compatible with
reported target architecture i386:x86-64
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
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##### SOURCE CODE ###########
root@mksecurity:~# cat arm.c
#include <stdio.h>
void foo(const char *s) {
printf("%s", s);
}
int main(void) {
foo("Hello World");
return 0;
}
#### READELF INFORMATION #######
root@mksecurity:~# arm-linux-gnueabihf-readelf -h arm.bin
ELF Header:
Magic: 7f 45 4c 46 01 01 01 00 00 00 00 00 00 00 00 00
Class: ELF32
Data: 2's complement, little endian
Version: 1 (current)
OS/ABI: UNIX - System V
ABI Version: 0
Type: DYN (Shared object file)
Machine: ARM
Version: 0x1
Entry point address: 0x495
Start of program headers: 52 (bytes into file)
Start of section headers: 9556 (bytes into file)
Flags: 0x5000400, Version5 EABI, hard-float ABI
Size of this header: 52 (bytes)
Size of program headers: 32 (bytes)
Number of program headers: 9
Size of section headers: 40 (bytes)
Number of section headers: 36
Section header string table index: 35
###### DEBUGGING #########
gdb-peda$ r
Starting program: /root/arm.bin
warning: Selected architecture arm is not compatible with reported target
architecture i386:x86-64
warning: Architecture rejected target-supplied description
/build/gdb-A87voC/gdb-7.12/gdb/i387-tdep.c:919: internal-error: void
i387_supply_xsave(regcache*, int, const void*): Assertion `tdep->st0_regnum >=
I386_ST0_REGNUM' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
Aborted (core dumped)
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Subject: [Bug exp/21162] GDB internal error with unbounded array typecast
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--- Comment #4 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
This problem was introduced in April 2014 with GIT commit
80180f796d366d230822c07a15aa68971abf9d77 -- "type: add c99 variable length
array support" (https://sourceware.org/ml/gdb-patches/2014-04/msg00160.html).
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Subject: [Bug exp/21162] GDB internal error with unbounded array typecast
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--- Comment #5 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
Created attachment 9832
--> https://sourceware.org/bugzilla/attachment.cgi?id=9832&action=edit
Test case for internal error with unbounded array typecast
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>From gdb-prs-return-20986-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 16 20:37:27 2017
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Subject: [Bug gdb/16188] Verify PTRACE_TRACEME succeeded?
Date: Thu, 16 Feb 2017 20:37:00 -0000
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Proposed fix:
https://sourceware.org/ml/gdb-patches/2017-02/msg00451.html
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>From gdb-prs-return-20987-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 17 13:06:56 2017
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Subject: [Bug breakpoints/7349] RFE: Can't refer to previous watchpoint value
in condition
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Tom Tromey <tromey at sourceware dot org> changed:
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CC| |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Came up again here:
http://stackoverflow.com/questions/42287337/programmatic-access-to-old-and-new-values-of-a-watchpoint-in-gdb/42298779#42298779
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>From gdb-prs-return-20988-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Feb 17 14:48:47 2017
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Subject: [Bug rust/21178] New: add xmethod support for rust
Date: Fri, 17 Feb 2017 14:48:00 -0000
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Bug ID: 21178
Summary: add xmethod support for rust
Product: gdb
Version: HEAD
Status: NEW
Severity: enhancement
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
Target Milestone: ---
Currently it's difficult to get an individual element from
a Vec in Rust. Example program:
fn main() {
let x = vec!(1,2,3,4);
println!("{}", x[2]);
}
(gdb) p x
$1 = Vec<i32>(len: 4, cap: 4) = {1, 2, 3, 4}
(gdb) p x[0]
Cannot subscript non-array type
Maybe xmethods or something similar could be added to the rust language code
in gdb.
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Subject: [Bug gdb/21165] [8.0 Regression] FAIL:
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Mine.
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https://sourceware.org/bugzilla/show_bug.cgi?id=21184
Bug ID: 21184
Summary: Unexpected display for flag/struct type in target
description
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: currygt52 at gmail dot com
Target Milestone: ---
Hi,
I get unexpected display when using the new target description feature
"multibit flag and enum bitfields".
The issue can be reproduced by explicitly hacking x86 target description as
follow:
1. Modifying gdb/features/i386/64bit-core.xml and adding two new types, and
modifying r14/r15 type.
<flags id="r14_flags" size="8">
<field name="BIT0" start="0" end="0"/>
<field name="BIT1_2" start="1" end="2"/>
</flags>
<struct id="r15_flags" size="8">
<field name="BIT0" start="0" end="0"/>
<field name="BIT1" start="1" end="1"/>
</struct>
<reg name="r14" bitsize="64" type="r14_flags"/>
<reg name="r15" bitsize="64" type="r15_flags"/>
2. Regenerate gdb/features/i386/amd64-avx-linux.c
rm i386/amd64-avx-linux.c
make GDB=<path/to/gdb> XMLTOC=i386/amd64-avx-linux.xml i386/amd64-avx-linux.c
3. Rebuild gdbserver
4. Launch gdbserver and connect it with gdb
5. Access r14/r15
(gdb) p/x $r14
$1 = 0x0
(gdb) p $r14
$2 = [ BIT1_2=0 ]
(gdb) set (long)$r14=0x2
(gdb) p/x $r14
$3 = 0x2
(gdb) p $r14
$4 = [ BIT1_2=2 ] <=== I expect [ BIT1_2=1 ]
(gdb) set (long)$r14=0x4
(gdb) p/x $r14
$5 = 0x4
(gdb) p $r14
$6 = [ BIT1_2=0 ] <=== I expect [ BIT1_2=2 ]
(gdb) p/x $r15
$7 = {BIT0 = 0x0, BIT1 = 0x0}
(gdb) set (long)$r15=0x1
(gdb) p/x $r15
$8 = {BIT0 = 0xff, BIT1 = 0x0} <=== I expect {BIT0 = 0x1, BIT1 = 0x0}
(gdb) p $r15
$9 = {BIT0 = -1, BIT1 = false} <=== I expect {BIT0 = true, BIT1 = false}
Please help to check this.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21185] New: add i128 and u128 support to rust
Date: Mon, 20 Feb 2017 04:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21185
Bug ID: 21185
Summary: add i128 and u128 support to rust
Product: gdb
Version: unknown
Status: NEW
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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Rust nightly has support for i128 and u128 types.
gdb should add support for these at some point;
certainly after the feature is ungated, but maybe before.
See https://github.com/rust-lang/rust/issues/35118
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From: "mishra.nitish.88 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21187] New: Static linking of libstdc++ and libgcc with
GDB leads to broken exception handling on AIX platform
Date: Mon, 20 Feb 2017 11:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
Bug ID: 21187
Summary: Static linking of libstdc++ and libgcc with GDB leads
to broken exception handling on AIX platform
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: mishra.nitish.88 at gmail dot com
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Created attachment 9841
--> https://sourceware.org/bugzilla/attachment.cgi?id=9841&action=edit
Issue with gdb built and linked statically with gcc-6.2
I tried building GDB, version= 7.12.50.20170106, with gcc-6.1 and 6.2 on AIX
7.2 platform. The static linking of GDB with libstdc++ and libgcc library leads
to an issue of broken exception handling. Specifically, running invalid
commands leads to core dump.
Test_result:
# ./gdb
GNU gdb (GDB) 7.12.50.20170106-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "powerpc64-ibm-aix7.2.0.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) kill
terminate called after throwing an instance of
'gdb_exception_RETURN_MASK_ERROR'
IOT/Abort trap (core dumped)
The test result and backtrace output is attached with the bug.
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To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Mon, 20 Feb 2017 11:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
--- Comment #1 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
I am proposing a patch in which I have implemented option "--disable-staticlib"
which will link GDB to libstdC++ and libgcc library dynamically, and will allow
AIX user to build and run GDB. By default the linking will be static only,
because it is working on other platforms.
The patch is attached with the bug and is tested on AIX-7.2 and Ubuntu-16.04.
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
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Nitish K Mishra <mishra.nitish.88 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mishra.nitish.88 at gmail dot com
--- Comment #2 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9842
--> https://sourceware.org/bugzilla/attachment.cgi?id=9842&action=edit
Configure otion to disable static linking of libstdc++ and libgcc to GDB
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/16188] Verify PTRACE_TRACEME succeeded?
Date: Mon, 20 Feb 2017 12:50:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/16188] Verify PTRACE_TRACEME succeeded?
Date: Mon, 20 Feb 2017 12:50:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0db8980cc0ee05727c11f8b7c6674137a4d5de4e
commit 0db8980cc0ee05727c11f8b7c6674137a4d5de4e
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Tue Feb 14 18:27:23 2017 -0500
PR gdb/16188: Verify PTRACE_TRACEME succeeded
This patch fixes PR gdb/16188, which is about the fact that
fork_inferior doesn't verify the return value of the "traceme_fun"
callback. On most targets, this callback is actually a wrapper to a
ptrace call that does a PTRACE_TRACEME on the forked GDB process that
will eventually become the inferior.
Thanks to Pedro, this second version of the patch is simpler and more
more logical. Basically, two helper functions are added:
trace_start_error and trace_start_error_with_name. The former can be
used when there is a customized error message to be printed to the
user. The latter works like perror_with_name, so you just need to
pass the function that error'd.
Both helper functions mentioned above do basically the same thing:
print the error message to stderr and call _exit, properly terminating
the forked inferior.
Most of the patch takes care of guarding the necessary system calls
against errors on the "traceme_fun" callbacks. It is not right to
call error on these situations, so I've replaced these calls with the
proper helper function call.
Regression-tested on BuildBot.
Thanks,
gdb/ChangeLog:
2017-02-20 Sergio Durigan Junior <sergiodj@redhat.com>
Pedro Alves <palves@redhat.com>
PR gdb/16188
* darwin-nat.c (darwin_ptrace_me): Check if calls to system
calls succeeded.
* fork-child.c (trace_start_error): New function.
(trace_start_error_with_name): Likewise.
* gnu-nat.c (gnu_ptrace_me): Check if call to PTRACE succeeded.
* inf-ptrace.c (inf_ptrace_me): Likewise.
* inferior.h (trace_start_error): New prototype.
(trace_start_error_with_name): Likewise.
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=1b076f2540e51055a7c6a4ee8fdfc604b54fb70a
commit 1b076f2540e51055a7c6a4ee8fdfc604b54fb70a
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Mon Feb 20 08:01:04 2017 -0500
Fix thinko on last commit
On fork-child.c:trace_start_error, va_end should refer to 'ap', not
'args. This fixes it.
Sorry about the breakage.
gdb/ChangeLog:
2017-02-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/16188
* fork-child.c (trace_start_error): Fix thinko. va_end should
refer to 'ap', not 'args'.
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>From gdb-prs-return-20998-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Feb 20 22:13:57 2017
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From: "gareth at blacksphere dot co.nz" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug remote/21188] New: Remote timeouts don't work correctly
Date: Mon, 20 Feb 2017 22:13:00 -0000
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Bug ID: 21188
Summary: Remote timeouts don't work correctly
Product: gdb
Version: 7.12
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The timeout mechanism in ser-unix.c was changed in commit 048094acc.
In do_hardwire_readchar(), the required timeout is broken into 1 second
intervals and wait_for() is called. Before, wait_for() set VTIME and VMIN so
the read would block, but now it uses select() to block for the specified
timeout. If wait_for() returns SERIAL_TIMEOUT, do_hardwire_readchar() returns
immediately, so the timeout is always only 1s.
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Subject: [Bug remote/21188] Remote timeouts don't work correctly
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--- Comment #1 from Gareth McMullin <gareth at blacksphere dot co.nz> ---
Created attachment 9845
--> https://sourceware.org/bugzilla/attachment.cgi?id=9845&action=edit
Patch for suggested fix
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
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Nitish K Mishra <mishra.nitish.88 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9842|0 |1
is obsolete| |
--- Comment #3 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9846
--> https://sourceware.org/bugzilla/attachment.cgi?id=9846&action=edit
Updated proposed patch file for this bug
The patch file which I sent earlier has some issue while patching. I sent it
mistakenly.
Attaching the updated patch file now.
Thanks and Regards,
Nitish
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Subject: [Bug exp/20991] __int128 type support
Date: Tue, 21 Feb 2017 22:19:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
One super intrusive option would be to use GMP everywhere.
Another possibility would be to redefine LONGEST as __int128
where available.
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>From gdb-prs-return-21002-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 22 03:47:59 2017
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Subject: [Bug breakpoints/21192] New: Incorrect/Undefined behavior when
watching member variables in multi threaded environments
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Bug ID: 21192
Summary: Incorrect/Undefined behavior when watching member
variables in multi threaded environments
Product: gdb
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When attempting to watch a member variable so that it breaks when written to,
normally i would use 'watch <varname>'. This works in single threaded code and
for local variables, but in multithreaded code, it will cause undefined
behavior, even if the variable is only ever changed in the main thread. Using
'watch this.<varname>' instead solves this issue.
Here is a simple test program using QT that demonstrates this behavior:
//main.cpp
int main(int argc, char* argv[])
{
QApplication applicationInstance(argc, argv);
testGDBCrash crasher;
if (crasher.exec() != QDialog::Accepted)
return 0;
return applicationInstance.exec();
}
//testGDBCrash.h
#ifndef TESTGDBCRASH_H
#define TESTGDBCRASH_H
#include <QDialog>
#include <QObject>
class testGDBCrash : public QDialog
{
Q_OBJECT
public:
testGDBCrash(QWidget * parent=0);
Q_SLOT void TestCrash();
bool m_foo;
};
#endif // TESTGDBCRASH_H
//testGDBCrash.cpp
#include "testGDBCrash.h"
#include <QPushButton>
#include <QHBoxLayout>
testGDBCrash::testGDBCrash(QWidget* parent):QDialog(parent)
{
resize(200,100);
QHBoxLayout * layout=new QHBoxLayout(this);
QPushButton * pb=new QPushButton("crash",this);
layout->addWidget(pb);
setLayout(layout);
show();
m_foo=false;
connect(pb,SIGNAL(clicked()),this,SLOT(TestCrash()));
}
void testGDBCrash::TestCrash()
{
if(m_foo)
return;
m_foo=false;
m_foo=true;
m_foo=false;
}
Steps to crash:
1. Run
2. put a breakpoint on line 18 of testGDBCrash.cpp (the if statement)
3. hit the 'crash' button
4. watch m_foo
5. Continue
GDB will either do strange stuff like tell you 'this' isnt defined, or it will
just not ever break. Note, changing step 4 to 'watch this.m_foo' will resolve
the behavior and work as intended.
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----------------------------------------------------------------------------
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Wed, 22 Feb 2017 11:22:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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Subject: [Bug gdb/21194] New: ERROR: AddressSanitizer: heap-buffer-overflow
on address
Date: Wed, 22 Feb 2017 15:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21194
Bug ID: 21194
Summary: ERROR: AddressSanitizer: heap-buffer-overflow on
address
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: qiyao at gcc dot gnu.org
Target Milestone: ---
I build GDB with CXXFLAGS='-O0 -g3 -fsanitize=address' and run test
inherit.exp,
$ make check RUNTESTFLAGS='inherit.exp'
^[[1m^[[31m==507==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60600015d438 at pc 0x7f2b4d918935 bp 0x7ffdfbf88ef0 sp 0x7ffdfbf88698^M
^[[1m^[[0m^[[1m^[[34mREAD of size 24 at 0x60600015d438 thread T0^[[1m^[[0m^M
#0 0x7f2b4d918934 in __asan_memcpy
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x8c934)^M
#1 0xba6ebe in value_contents_copy_raw(value*, long, value*, long, long)
../../binutils-gdb/gdb/value.c:1361^M
#2 0xba6fb1 in value_contents_copy(value*, long, value*, long, long)
../../binutils-gdb/gdb/value.c:1390^M
#3 0xbb0abe in value_from_component(value*, type*, long)
../../binutils-gdb/gdb/value.c:3802^M
#4 0x5e7934 in gdbpy_apply_val_pretty_printer(extension_language_defn
const*, type*, long, unsigned long, ui_file*, int, value*, value_print_options
const*, language_defn const*)
../../binutils-gdb/gdb/python/py-prettyprint.c:729^M
#5 0x8e8742 in apply_ext_lang_val_pretty_printer(type*, long, unsigned
long, ui_file*, int, value*, value_print_options const*, language_defn const*)
../../binutils-gdb/gdb/extension.c:518^M
#6 0x7f0c14 in cp_print_value ../../binutils-gdb/gdb/cp-valprint.c:595^M
#7 0x7edb50 in cp_print_value_fields(type*, type*, long, unsigned long,
ui_file*, int, value*, value_print_options const*, type**, int)
../../binutils-gdb/gdb/cp-valprint.c:200^M
#8 0x7ef9a9 in cp_print_value_fields_rtti(type*, unsigned char const*,
long, unsigned long, ui_file*, int, value*, value_print_options const*, type**,
int) ../../binutils-gdb/gdb/cp-valprint.c:456^M
#9 0x7b23e8 in c_val_print_struct ../../binutils-gdb/gdb/c-valprint.c:412^M
#10 0x7b2bee in c_val_print(type*, int, unsigned long, ui_file*, int,
value*, value_print_options const*) ../../binutils-gdb/gdb/c-valprint.c:530^M
#11 0xb98e97 in val_print(type*, long, unsigned long, ui_file*, int,
value*, value_print_options const*, language_defn const*)
../../binutils-gdb/gdb/valprint.c:1120^M
#12 0x7b38a2 in c_value_print(value*, ui_file*, value_print_options const*)
../../binutils-gdb/gdb/c-valprint.c:698^M
#13 0xb99517 in value_print(value*, ui_file*, value_print_options const*)
../../binutils-gdb/gdb/valprint.c:1233^M
#14 0xa42be8 in print_formatted ../../binutils-gdb/gdb/printcmd.c:321^M
#15 0xa46ac9 in print_value(value*, format_data const*)
../../binutils-gdb/gdb/printcmd.c:1233^M
#16 0xa46d82 in print_command_1 ../../binutils-gdb/gdb/printcmd.c:1261
.................
^[[1m^[[32m0x60600015d438 is located 0 bytes to the right of 56-byte region
[0x60600015d400,0x60600015d438)^M
^[[1m^[[0m^[[1m^[[35mallocated by thread T0 here:^[[1m^[[0m^M
#0 0x7f2b4d92479a in __interceptor_calloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x9879a)^M
#1 0x7d1672 in xcalloc ../../binutils-gdb/gdb/common/common-utils.c:83^M
#2 0x7d16be in xzalloc(unsigned long)
../../binutils-gdb/gdb/common/common-utils.c:93^M
#3 0xba5b6a in allocate_value_contents
../../binutils-gdb/gdb/value.c:1039^M
#4 0xbb1367 in value_fetch_lazy(value*)
../../binutils-gdb/gdb/value.c:3955^M
#5 0xba951d in record_latest_value(value*)
../../binutils-gdb/gdb/value.c:1904^M
#6 0xa4695c in print_value(value*, format_data const*)
../../binutils-gdb/gdb/printcmd.c:1222^M
#7 0xa46d82 in print_command_1 ../../binutils-gdb/gdb/printcmd.c:1261^M
#8 0xa46e3e in print_command ../../binutils-gdb/gdb/printcmd.c:1267^M
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>From gdb-prs-return-21007-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 22 16:23:32 2017
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Subject: [Bug gdb/21194] ERROR: AddressSanitizer: heap-buffer-overflow on
address
Date: Wed, 22 Feb 2017 16:23:00 -0000
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
If I add asserts in value_contents_copy_raw, it is triggered too,
diff --git a/gdb/value.c b/gdb/value.c
index 557c300..ae5ec78 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -1356,6 +1356,10 @@ value_contents_copy_raw (struct value *dst, LONGEST
dst_offset,
TARGET_CHAR_BIT * length));
/* Copy the data. */
+ gdb_assert (length * unit_size + dst_offset * unit_size
+ <= TYPE_LENGTH (dst->enclosing_type));
+ gdb_assert (length * unit_size + src_offset * unit_size
+ <= TYPE_LENGTH (src->enclosing_type));
memcpy (value_contents_all_raw (dst) + dst_offset * unit_size,
value_contents_all_raw (src) + src_offset * unit_size,
length * unit_size);
----------------------------------------------
print g_vD^M
$91 = {<vB> = {<vA> = {va = 19, vx = 20}, _vptr.vB = 0x401300 <vtable for
vD+64>, vb = 21, vx = 22}, <vC> =
/home/yao/SourceCode/gnu/gdb/git/gdb/value.c:1362: internal-error: void
value_contents_copy_raw(value*, LONGEST, value*, LONGEST, LONGEST): Assertion
`length * unit_size + src_offset * unit_size <= TYPE_LENGTH
(src->enclosing_type)' failed.^M
A problem internal to GDB has been detected,^M
further debugging may prove unreliable.^M
Quit this debugging session? (y or n) FAIL: gdb.cp/inherit.exp: print g_vD (GDB
internal error)
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From: "spencerbaugh at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug record/21195] New: Record immediately crashes with multiple
inferiors
Date: Wed, 22 Feb 2017 16:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21195
Bug ID: 21195
Summary: Record immediately crashes with multiple inferiors
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: record
Assignee: unassigned at sourceware dot org
Reporter: spencerbaugh at gmail dot com
Target Milestone: ---
While recording a program, if you add another inferior, GDB will crash:
Current directory is /home/sbaugh/
GNU gdb (GDB) 7.4.1-debian
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
(gdb) file hello
Reading symbols from /home/sbaugh/hello...(no debugging symbols found)...done.
(gdb) start
Temporary breakpoint 1 at 0x4007ba
Starting program: /home/sbaugh/hello
warning: no loadable sections found in added symbol-file system-supplied DSO at
0x7ffff7ffa000
Temporary breakpoint 1, 0x00000000004007ba in main ()
(gdb) record
(gdb) add-inferior -exec hello
Added inferior 2
Reading symbols from /home/sbaugh/hello...(no debugging symbols found)...done.
(gdb) infe 2
[Switching to inferior 2 [process 0] (/home/sbaugh/hello)]
(gdb) start
Temporary breakpoint 2 at 0x4007ba (2 locations)
Starting program: /home/sbaugh/hello
/tmp/buildd/gdb-7.4.1+dfsg/gdb/record.c:1176: internal-error: record_wait_1:
Assertion `(options & TARGET_WNOHANG) != 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
I've confirmed this on HEAD as well. (I presume this bug is present in all
versions of gdb with record)
Snippet of backtrace:
#3 0x000000000065a8c9 in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *)
(problem=problem@entry=0xc3b740 <internal_error_problem>, file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7ffcd0fbf1c8) at
utils.c:772
#4 0x000000000065aa39 in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7ffcd0fbf1c8) at
utils.c:798
#5 0x0000000000695822 in internal_error (file=file@entry=0x861739
"record-full.c", line=line@entry=1066, fmt=<optimized out>) at
./common/errors.c:55
#6 0x0000000000683a3b in record_full_wait_1 (options=<optimized out>,
status=0x7ffcd0fbf4a0, ptid=..., ops=0xc64620 <record_full_ops>) at
record-full.c:1066
#7 record_full_wait (ops=0xc64620 <record_full_ops>, ptid=...,
status=0x7ffcd0fbf4a0, options=<optimized out>) at record-full.c:1346
#8 0x00000000005aa20e in delegate_wait (self=<optimized out>, arg1=...,
arg2=<optimized out>, arg3=<optimized out>) at target-delegates.c:116
#9 0x00000000005b9815 in target_wait (ptid=...,
status=status@entry=0x7ffcd0fbf4a0, options=options@entry=0) at target.c:2289
#10 0x000000000044feca in startup_inferior (ntraps=ntraps@entry=1) at
fork-child.c:465
The culprit seems to be that startup_inferior passes options=0 to wait, while
record_full_wait_1 asserts (options & TARGET_WNOHANG) != 0.
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From: "spencerbaugh at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug record/21195] Record immediately crashes with multiple
inferiors
Date: Wed, 22 Feb 2017 16:28:00 -0000
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Spencer Baugh <spencerbaugh at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|HEAD |7.12.1
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>From gdb-prs-return-21010-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Feb 22 19:45:36 2017
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Subject: [Bug breakpoints/21192] Incorrect/Undefined behavior when watching
member variables in multi threaded environments
Date: Wed, 22 Feb 2017 19:45:00 -0000
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Aetf <aetf at unlimitedcodeworks dot xyz> changed:
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CC| |aetf at unlimitedcodeworks dot xyz
--- Comment #1 from Aetf <aetf at unlimitedcodeworks dot xyz> ---
This also affects the machine interface used by KDevelop which get confused
when GDB outputs two responses for a single command.
Detailed description can be found at
https://bugs.kde.org/show_bug.cgi?id=376595#c15
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>From gdb-prs-return-21011-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 10:41:22 2017
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From: "massimo.b at gmx dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug remote/18772] gdb does not respond to CTRL-C
Date: Thu, 23 Feb 2017 10:41:00 -0000
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Massimo B. <massimo.b at gmx dot net> changed:
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----------------------------------------------------------------------------
CC| |massimo.b at gmx dot net
--- Comment #1 from Massimo B. <massimo.b at gmx dot net> ---
This is 7.12.1 server and client.
Having no breakpoints it is not possible to pause execution by CTRL+c at all,
as it is done using the native gdb:
server $ gdbserver --multi --attach localhost:8888 $(pgrep -f my_app)
client $ gdb
target extended-remote localhost:8888
Remote debugging using localhost:8888
Reading /lib64/libdl.so.2 from remote target...
Reading /lib64/libSegFault.so from remote target...
...
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
0x00007f6b26857923 in __select_nocancel () from target:/lib64/libc.so.6
(gdb) where
#0 0x00007f6b26857923 in __select_nocancel () from target:/lib64/libc.so.6
...
#9 0x00000000004497ee in main (argc=14, argv=0x7ffe8e4b0af8) at main.cpp:245
(gdb) c
Continuing.
^C^CThe target is not responding to interrupt requests.
Stop debugging it? (y or n) y
Disconnected from target.
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>From gdb-prs-return-21012-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 17:05:58 2017
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From: "jose.marchesi at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21196] New: Build is broken with Python < 2.7
Date: Thu, 23 Feb 2017 17:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21196
Bug ID: 21196
Summary: Build is broken with Python < 2.7
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: jose.marchesi at oracle dot com
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The build is currently broken with Python 2.6:
g++ -g -O2 -I. -I../../gdb -I../../gdb/common -I../../gdb/config
-DLOCALEDIR="\"/usr/local/share/locale\"" -DHAVE_CONFIG_H
-I../../gdb/../include/opcode -I../../gdb/../opcodes/..
-I../../gdb/../readline/.. -I../.. gdb/../zlib -I../bfd -I../../gdb/../bfd
-I../../gdb/../include -I../libdecnumber -I../../gdb/../libdecnumber
-I../../gdb/gnulib/import -Ibuild-gnulib/import -DTUI=1
-I/usr/include/python2.6 -I/usr/include/python2.6 -Wall -Wpointer-arith
-Wno-unused -Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts
-Wempty-body -Wunused-but-set-parameter -Wunused-but-set-variable
-Wno-sign-compare -Wno-write-strings -Wno-narrowing -Wformat-nonliteral -Werror
-c -o py-record-btrace.o -MT py-record-btrace.o -MMD -MP -MF
.deps/py-record-btrace.Tpo -fno-strict-aliasing -DNDEBUG -fwrapv
../../gdb/python/py-record-btrace.c
../../gdb/python/py-record-btrace.c: In function PyObject*
btpy_insn_data(PyObject*, void*):
../../gdb/python/py-record-btrace.c:333:10: error:
‘PyMemoryView_FromObject’ was not declared in this scope
return PyMemoryView_FromObject (object);
^~~~~~~~~~~~~~~~~~~~~~~
../../gdb/python/py-record-btrace.c:333:10: note: suggested alternative:
‘PyBuffer_FromObject’
return PyMemoryView_FromObject (object);
^~~~~~~~~~~~~~~~~~~~~~~
PyBuffer_FromObject
make: *** [py-record-btrace.o] Error 1
Looks like the Memory View object was introduced in Python 2.7.
Salud!
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From: "lgustavo at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
Date: Thu, 23 Feb 2017 17:21:00 -0000
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Luis Machado <lgustavo at codesourcery dot com> changed:
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CC| |lgustavo at codesourcery dot com
--- Comment #3 from Luis Machado <lgustavo at codesourcery dot com> ---
Odd. So this is getting past the feature test even though it doesn't support
rdseed.
Is rdrand supported just fine?
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>From gdb-prs-return-21014-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 17:25:21 2017
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
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--- Comment #4 from Luis Machado <lgustavo at codesourcery dot com> ---
Ah, that particular processor doesn't support rdseed, that's why.
Mine does:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 78
model name : Intel(R) Core(TM) i7-6600U CPU @ 2.60GHz
stepping : 3
microcode : 0x74
cpu MHz : 1094.843
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 2
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 22
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb
rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est
tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt
tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch epb
intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle
avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt xsaveopt xsavec
xgetbv1 dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp
bugs :
bogomips : 5615.80
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
I guess i'll need a different mechanism to test rdrand and rdseed support
separately.
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>From gdb-prs-return-21015-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 19:31:12 2017
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
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Luis Machado <lgustavo at codesourcery dot com> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at sourceware dot org |lgustavo at codesourcery dot com
--- Comment #5 from Luis Machado <lgustavo at codesourcery dot com> ---
Proposed fix sent to the mailing list.
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>From gdb-prs-return-21016-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 20:46:29 2017
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Subject: [Bug gdb/21166] FAIL: gdb.reverse/insn-reverse.exp: rdseed: x/i $pc
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Luis Machado <lgustavo at codesourcery dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #6 from Luis Machado <lgustavo at codesourcery dot com> ---
Fix pushed as c26db3b33b7274946e42c6656ee1c0911cefb865
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20757] gdb: DWARF-5 support
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Bug 20757 depends on bug 20755, which changed state.
Bug 20755 Summary: readelf: DWARF-5 support
https://sourceware.org/bugzilla/show_bug.cgi?id=20755
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20757] gdb: DWARF-5 support
Date: Thu, 23 Feb 2017 22:20:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Now checked-in (except DWO and .debug_names) as a patch series, primarily:
commit 43988095a5a4c53e6d5b00a6335454919c4fac55
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Mon Feb 20 20:53:21 2017 +0100
DWARF-5 basic functionality
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>From gdb-prs-return-21019-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Feb 23 23:51:00 2017
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
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Subject: [Bug server/21169] GDBServer on ARM can crash the inferior while
single stepping
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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CC| |qiyao at gcc dot gnu.org
Component|gdb |server
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
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Nitish K Mishra <mishra.nitish.88 at gmail dot com> changed:
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Attachment #9846|0 |1
is obsolete| |
--- Comment #4 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9850
--> https://sourceware.org/bugzilla/attachment.cgi?id=9850&action=edit
Updated proposed patch file for this bug
Proposed patch for configure.ac file.
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>From gdb-prs-return-21023-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Feb 27 10:53:46 2017
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Subject: [Bug gdb/21200] New: rl78-elf-gdb.exe crashes when trying to run
program in debugger
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Bug ID: 21200
Summary: rl78-elf-gdb.exe crashes when trying to run program in
debugger
Product: gdb
Version: 7.8
Status: UNCONFIRMED
Severity: normal
Priority: P2
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In Renesas e2studio, run under Windows 10, rl78-elf-gdb.exe crashes when
program is run.
Downloading the program to the hardware works fine. Single stepping seems to
work ok but as soon as the run button is clicked,rl78-elf-gdb.exe crashes.
This is what is output to the console window:
=============================================
GNU gdb (GDB) 7.8.2-20161206-Build_1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-mingw32 --target=rl78-elf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
monitor
set_io_access_width,RW,2,f00e0-f00e2,f0108-f011e,f0122-f012a,f0134,f0138,f0148-f014a,f0150-f0152,f0158-f015a,f0162-f016a,f0174,f0190-f019e,f01b2-f01be,f02f2,f02fa,fff10-fff12,fff18-fff1a,fff44-fff4a
monitor
set_io_access_width,RW,2,fff64-fff6e,fff90,fffb2-fffb8,fffd0,fffd4,fffd8,fffdc,fffe0-ffff6
monitor
set_io_access_width,R,2,f0100-f0106,f0120,f0140-f0142,f0160,f0180-f018e,f01a0-f01b0,fff1e
monitor
set_io_access_width,RW,1,f0010-f0013,f0030-f0031,f0033-f0035,f003c,f003e,f0040-f0041,f0050-f0051,f0055,f0060,f006c,f006e,f0070-f0071,f0073-f0074,f0076-f0078,f0090,f00a0,f00a8,f00ac-f00af,f00e8,f00f0
monitor
set_io_access_width,RW,1,f00f3-f00f5,f00fe,f0100,f0102,f0104,f0106,f0108,f010a,f010c,f010e,f0120,f0122,f0124,f0126,f012a,f0134,f0138,f0140,f0142,f0148,f014a,f0160,f0162,f0164,f0166,f016a,f0174,f01a0
monitor
set_io_access_width,RW,1,f01a2,f01a4,f01a6,f01a8,f01aa,f01ac,f01ae,f01b0,f01b2,f01b4,f01b8,f01ba,f01bc,f01be,f0230-f0234,f02f0,fff00-fff06,fff0c-fff0e,fff10,fff12,fff1a-fff1b,fff1f-fff26,fff2c,fff2e
monitor
set_io_access_width,RW,1,fff30-fff32,fff38-fff39,fff44,fff46,fff48,fff4a,fff50-fff52,fff66-fff67,fff92-fff9e,fffa0-fffa6,fffa8-fffac,fffb0-fffbd,fffd0-fffd1,fffd4-fffd5,fffd8-fffd9,fffdc-fffdd
monitor set_io_access_width,RW,1,fffe0-fffef,ffffe
Program received signal Warning: the current language does not match this
frame.
Program received signal SIGTRAP, Trace/breakpoint trap.
PowerON_Reset () at ../src/r_reset_program.asm:65
65 movw sp,#_stack /* Set stack pointer */
../../RL78_python_GDB/gdb/dwarf2-frame.c:687: internal-error: Unknown CFI
encountered.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session?
This is a bug, please report it.This application has requested the Runtime to
terminate it in an unusual way.
Please contact the application's support team for more information.
For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
(y or n) [answered Y; input not from terminal]
../../RL78_python_GDB/gdb/dwarf2-frame.c:687: internal-error: Unknown CFI
encountered.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
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--- Comment #5 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9860
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ChangeLog
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From: "ake.rehnman at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18051] gdb hang in "start" command w/ remote target
Date: Tue, 28 Feb 2017 18:50:00 -0000
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--- Comment #2 from Ake <ake.rehnman at gmail dot com> ---
Same result when issuing run cmd. Possibly missing "clear_proceed_status (0)"
in run_command_1 before calling proceed.
I have tested adding clear_proceed_status (0) before call to proceed with good
result.
gdb version 7.12.1
LOG BEFORE CHANGE:
=====================================
(gdb) b main
Breakpoint 1 at 0x82c6: file led.c, line 121.
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /cygdrive/c/temp/test1/led.elf
infrun: infrun_async(1)
infrun: proceed (addr=0x6000, signal=GDB_SIGNAL_0)
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread
[Remote target] at 0x6000
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: -1.0.0 [Thread 0],
infrun: status->kind = ignore
infrun: TARGET_WAITKIND_IGNORE
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 42000.0.0 [Remote target],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x82c6
infrun: quietly stopped
infrun: stop_waiting
infrun: clear_step_over_info
infrun: infrun_async(0)
AFTER ADDING clear_proceed_status(0):
==========================================
(gdb) b main
Breakpoint 1 at 0x82c6: file led.c, line 121.
(gdb) run
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /cygdrive/c/temp/test1/led.elf
infrun: infrun_async(1)
infrun: clear_proceed_status_thread (Remote target)
infrun: proceed (addr=0x6000, signal=GDB_SIGNAL_0)
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread
[Remote target] at 0x6000
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: -1.0.0 [Thread 0],
infrun: status->kind = ignore
infrun: TARGET_WAITKIND_IGNORE
infrun: prepare_to_wait
infrun: target_wait (-1.0.0, status) =
infrun: 42000.0.0 [Remote target],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
infrun: TARGET_WAITKIND_STOPPED
infrun: stop_pc = 0x82c6
infrun: BPSTAT_WHAT_STOP_NOISY
infrun: stop_waiting
infrun: clear_step_over_info
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From: "ake.rehnman at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18051] gdb hang in "start" command w/ remote target
Date: Tue, 28 Feb 2017 18:50:00 -0000
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Ake <ake.rehnman at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |ake.rehnman at gmail dot com
--- Comment #1 from Ake <ake.rehnman at gmail dot com> ---
Created attachment 9863
--> https://sourceware.org/bugzilla/attachment.cgi?id=9863&action=edit
Missing clear_proceed_status(0) in run_command_1
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>From gdb-prs-return-21027-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Feb 28 21:15:47 2017
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From: "chrisj at rtems dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21206] New: gdb-7.12.1 for arm-rtems4.12 fails to
build on FreeBSD 11.0
Date: Tue, 28 Feb 2017 21:15:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21206
Bug ID: 21206
Summary: gdb-7.12.1 for arm-rtems4.12 fails to build on FreeBSD
11.0
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: corefiles
Assignee: unassigned at sourceware dot org
Reporter: chrisj at rtems dot org
Target Milestone: ---
Note, HEAD is also broken.
The arm-rtems4.12 target is broken in gdb-7.12.1 and binutils-gdb.git HEAD on
FreeBSD 11.0.
Configure command is:
$ ../binutils-gdb/configure --build=x86_64-freebsd11.0
--host=x86_64-freebsd11.0 --target=arm-rtems4.12 --verbose --disable-nls
--without-included-gettext --disable-win32-registry --disable-werror
--enable-sim --without-zlib --with-expat --with-python
--prefix=/opt/work/rtems/4.12 --bindir=/opt/work/rtems/4.12/bin
--exec-prefix=/opt/work/rtems/4.12 --includedir=/opt/work/rtems/4.12/include
--libdir=/opt/work/rtems/4.12/lib --mandir=/opt/work/rtems/4.12/share/man
--infodir=/opt/work/rtems/4.12/share/info
Host compiler is /usr/bin/c++.
It looks like something in the recent gnulib updates breaks on FreeBSD 11.0.
The error from building on HEAD is:
/usr/bin/c++ -O2 -pipe -fbracket-depth=1024
-I/opt/work/chris/rtems/rsb/rtems-source-builder.git/rtems/build/tmp/sb-chris/4.12/rtems-arm/opt/work/rtems/4.12/include
-std=gnu++11 -I. -I../../binutils-gdb/gdb -I../../binutils-gdb/gdb/common
-I../../binutils-gdb/gdb/config
-DLOCALEDIR="\"/opt/work/rtems/4.12/share/locale\"" -DHAVE_CONFIG_H
-I../../binutils-gdb/gdb/../include/
opcode -I../../binutils-gdb/gdb/../opcodes/..
-I../../binutils-gdb/gdb/../readline/.. -I../../binutils-gdb/gdb/../zlib
-I../bfd -I../../binutils-gdb/gdb/../bfd -I../../binutils-gdb/gdb/../include
-I../libdecnumber -I../../binutils-gdb/gdb/../libdecnumber
-I../../binutils-gdb/gdb/gnulib/import -Ibuild-gnulib/import -DTUI=1
-I/opt/work/rtems/4.12/include -I/usr/local/inclu
de/python2.7 -I/usr/local/include/python2.7 -Wall -Wpointer-arith -Wno-unused
-Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body
-Wunused-but-set-parameter -Wunused-but-set-variable -Wno-sign-compare
-Wno-write-strings -Wno-narrowing -Wformat-nonliteral -c -o gdb.o -MT gdb.o
-MMD -MP -MF .deps/gdb.Tpo ../../binutils-gdb/gdb/gdb.c
c++: warning: treating 'c' input as 'c++' when in C++ mode, this behavior is
deprecated
warning: unknown warning option '-Wunused-but-set-parameter'; did you mean
'-Wunused-parameter'? [-Wunknown-warning-option]
warning: unknown warning option '-Wunused-but-set-variable'; did you mean
'-Wunused-const-variable'? [-Wunknown-warning-option]
In file included from ../../binutils-gdb/gdb/gdb.c:19:
In file included from ../../binutils-gdb/gdb/defs.h:28:
In file included from ../../binutils-gdb/gdb/common/common-defs.h:52:
In file included from build-gnulib/import/stdio.h:53:
build-gnulib/import/stddef.h:106:3: error: typedef redefinition with different
types ('union max_align_t' vs 'long double')
} max_align_t;
^
/usr/include/c++/v1/stddef.h:57:21: note: previous definition is here
typedef long double max_align_t;
^
In file included from ../../binutils-gdb/gdb/gdb.c:19:
In file included from ../../binutils-gdb/gdb/defs.h:53:
../../binutils-gdb/gdb/ui-file.h:93:28: warning: struct 'ui_file' was
previously declared as a class [-Wmismatched-tags]
extern int ui_file_isatty (struct ui_file *);
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
../../binutils-gdb/gdb/ui-file.h:93:28: note: did you mean class here?
extern int ui_file_isatty (struct ui_file *);
^~~~~~
class
../../binutils-gdb/gdb/ui-file.h:95:28: warning: struct 'ui_file' was
previously declared as a class [-Wmismatched-tags]
extern void ui_file_write (struct ui_file *file, const char *buf,
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
../../binutils-gdb/gdb/ui-file.h:95:28: note: did you mean class here?
extern void ui_file_write (struct ui_file *file, const char *buf,
^~~~~~
class
../../binutils-gdb/gdb/ui-file.h:98:39: warning: struct 'ui_file' was
previously declared as a class [-Wmismatched-tags]
extern void ui_file_write_async_safe (struct ui_file *file, const char *buf,
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
../../binutils-gdb/gdb/ui-file.h:98:39: note: did you mean class here?
extern void ui_file_write_async_safe (struct ui_file *file, const char *buf,
^~~~~~
class
../../binutils-gdb/gdb/ui-file.h:101:27: warning: struct 'ui_file' was
previously declared as a class [-Wmismatched-tags]
extern long ui_file_read (struct ui_file *file, char *buf, long length_buf);
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
../../binutils-gdb/gdb/ui-file.h:101:27: note: did you mean class here?
extern long ui_file_read (struct ui_file *file, char *buf, long length_buf);
^~~~~~
class
In file included from ../../binutils-gdb/gdb/gdb.c:19:
../../binutils-gdb/gdb/defs.h:327:8: warning: struct 'ui_file' was previously
declared as a class [-Wmismatched-tags]
struct ui_file *, int, char *);
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
../../binutils-gdb/gdb/defs.h:327:8: note: did you mean class here?
struct ui_file *, int, char *);
^~~~~~
class
../../binutils-gdb/gdb/defs.h:338:57: warning: struct 'ui_file' was previously
declared as a class [-Wmismatched-tags]
extern void print_address (struct gdbarch *, CORE_ADDR, struct ui_file *);
^
../../binutils-gdb/gdb/ui-file.h:26:7: note: previous use is here
class ui_file
^
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>From gdb-prs-return-21028-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 01 09:47:25 2017
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From: "xhpohanka at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21208] New: Inspecting std:set causes gdb to hang when using
gdb/mi interface and pretty printing
Date: Wed, 01 Mar 2017 09:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21208
Bug ID: 21208
Summary: Inspecting std:set causes gdb to hang when using
gdb/mi interface and pretty printing
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
Reporter: xhpohanka at gmail dot com
Target Milestone: ---
Created attachment 9865
--> https://sourceware.org/bugzilla/attachment.cgi?id=9865&action=edit
gdb log
Following code causes problem to mi interpreter with pretty printing enabled
#include <set>
#include <string>
using namespace std;
int main()
{
set<string> foo; // non POD type needed here
foo.insert("bar");
return 0;
}
Following commands can be used to reproduce the issue
gdb --interpreter=mi ./test
br main
-enable-pretty-printing
-exec-run
-var-create - * foo
-var-list-children var1
Listing children of foo causes very long loop that sometimes never finishes.
Detailed log is attached.
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>From gdb-prs-return-21029-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 01 09:48:33 2017
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From: "xhpohanka at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21208] Inspecting std::set causes gdb to hang when using
gdb/mi interface and pretty printing
Date: Wed, 01 Mar 2017 09:48:00 -0000
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Jan Pohanka <xhpohanka at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Inspecting std:set causes |Inspecting std::set causes
|gdb to hang when using |gdb to hang when using
|gdb/mi interface and pretty |gdb/mi interface and pretty
|printing |printing
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>From gdb-prs-return-21030-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Mar 02 08:38:13 2017
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Subject: [Bug breakpoints/7349] RFE: Can't refer to previous watchpoint value
in condition
Date: Thu, 02 Mar 2017 08:38:00 -0000
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Dmitry G. Djachenko <dimhen at gmail dot com> changed:
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From: "dzabraew at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21213] New: garbarge collector eats
gdb.selected_thread()
Date: Thu, 02 Mar 2017 17:25:00 -0000
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Bug ID: 21213
Summary: garbarge collector eats gdb.selected_thread()
Product: gdb
Version: HEAD
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Component: python
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Hi, gdb developers!
I found following bug:
(gdb) pi gdb.selected_thread().inferior
<gdb.Inferior object at 0x7f1952bea698>
(gdb) pi gdb.selected_thread().inferior
<gdb.Inferior object at 0x7f1952bea698>
(gdb) pi gdb.selected_thread().inferior
Python Exception <type 'exceptions.AttributeError'> 'NoneType' object has no
attribute 'inferior':
Error while executing Python code.
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7f54f0474740 (LWP 584) "mc" 0x00007f54ef055c33 in select ()
from /lib/x86_64-linux-gnu/libc.so.6
Seems tube problem in `thpy_get_inferior` function, file:
gdb/python/py-infthread.c.
following path fixes this problem
----------begin-patch---------
--- /tmp/py-infthread.c.OLD 2017-03-02 20:23:53.919146955 +0300
+++ /tmp/py-infthread.c.NEW 2017-03-02 20:24:14.319146366 +0300
@@ -160,6 +160,7 @@
thread_object *thread_obj = (thread_object *) self;
THPY_REQUIRE_VALID (thread_obj);
+ Py_INCREF (thread_obj->inf_obj);
return thread_obj->inf_obj;
}
----------end-patch-----------
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Is your compiler clang? I have no problem building gdb with clang++-3.6 on
Linux.
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
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--- Comment #2 from Chris Johns <chrisj at rtems dot org> ---
(In reply to Yao Qi from comment #1)
> Is your compiler clang? I have no problem building gdb with clang++-3.6 on
> Linux.
Yes, this is the default compiler for FreeBSD 11.0:
$ /usr/bin/c++ --version
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM
3.8.0)
Target: x86_64-unknown-freebsd11.0
Thread model: posix
InstalledDir: /usr/bin
I was just looking into this on gdb's git HEAD branch and it seems gnulib's
configure is using the default CPP which is a C compiler however GDB is not C++
and so the generated header file 'stddef.h' is not really suitable. The top of
config.log for gnulib has 'CPP=' I suspect this needs to be the C++ compiler.
I hacked gnulib/configure adding to the top something like:
CPP="/usr/bin/c++ -E"
and 'stddef.h' was correctly created. I could not figure out how to specify
'CPP=$CXX' to gnulib's configure. I did try setting CPP to CXX when calling the
top level configure however building the binutils parts fails which is to be
expected.
The build did fail on further on with:
In file included from ../../binutils-gdb/gdb/dwarf2read.c:72:
../../binutils-gdb/gdb/common/gdb_unlinker.h:35:35: error: '__nonnull__'
attribute is invalid for the implicit this argument
unlinker (const char *filename) ATTRIBUTE_NONNULL (1)
^ ~
../../binutils-gdb/gdb/../include/ansidecl.h:169:48: note: expanded from macro
'ATTRIBUTE_NONNULL'
# define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
So it looks like there are other issues.
FYI this issue is currently a blocker for RTEMS's 4.12 release.
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
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--- Comment #3 from Chris Johns <chrisj at rtems dot org> ---
(In reply to Chris Johns from comment #2)
> I was just looking into this on gdb's git HEAD branch and it seems gnulib's
> configure is using the default CPP which is a C compiler however GDB is not
> C++
Sorry I meant GDB *is* a C++ program.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/18294] gdb compilation fails on 32-bit Solaris: largefile
vs. procfs
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--- Comment #2 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #1 from Joel Brobecker <brobecker at gnat dot com> ---
> Can you confirm whether GDB 7.12 does better?
I just tried 7.12.1 on i386-pc-solaris2.10: same failure.
> Given that this isn't a regression, I don't think this PR should be blocking
> for 8.0. In other words, a fix by 8.0 would be great, but we shouldn't block
> 8.0 because of that (known) issue.
How is this not a regression? Worked in 7.8, broke build in 7.9 pretty
much looks like a regression to me ;-)
Rainer
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Subject: [Bug build/18294] gdb compilation fails on 32-bit Solaris: largefile
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--- Comment #3 from brobecker at adacore dot com ---
> I just tried 7.12.1 on i386-pc-solaris2.10: same failure.
Darn...
>
> > for 8.0. In other words, a fix by 8.0 would be great, but we shouldn't block
> > 8.0 because of that (known) issue.
>
> How is this not a regression? Worked in 7.8, broke build in 7.9
> pretty much looks like a regression to me ;-)
It depends on how you define regression, of course. For the purpose
of a new release, we only consider the previous version/branch. If
the previous release/branch already had the issue, then we no longer
consider it blocking, basically because create a new release without
the fix wouldn't make things worse for that platform.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21165] [8.0 Regression] FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
Date: Fri, 03 Mar 2017 17:17:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7d45f3df96ca108f6d7d0c5e4279e22b820145fa
commit 7d45f3df96ca108f6d7d0c5e4279e22b820145fa
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Mar 3 17:16:19 2017 +0000
Fetch lazy value before calling val_print
As reported in PR 21165,
(gdb) info locals^M
gv = /home/yao/SourceCode/gnu/gdb/git/gdb/value.c:372: internal-error: int
value_bits_any_optimized_out(const value*, int, int): Assertion `!value->lazy'
failed.^M
A problem internal to GDB has been detected,^M
further debugging may prove unreliable.^M
Quit this debugging session? (y or n) FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
Resyncing due to internal error.
This internal error is caused by e8b24d9 (Remove parameter valaddr from
la_val_print). Commit e8b24d9 removes some calls to
value_contents_for_printing, but value_fetch_lazy is not called, so the
internal error above is triggered. This patch adds value_fetch_lazy
call before val_print.
gdb:
2017-03-03 Yao Qi <yao.qi@linaro.org>
PR gdb/21165
* ada-valprint.c (ada_val_print_ref): Call value_fetch_lazy if
value is lazy.
* valprint.c (common_val_print): Likewise.
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Subject: [Bug gdb/21165] [8.0 Regression] FAIL:
gdb.ada/info_locals_renaming.exp: info locals (GDB internal error)
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
Patch is pushed in.
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From: "sameer.varyani at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21214] New: exec_file_attach uses gdb_realpath instead of
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https://sourceware.org/bugzilla/show_bug.cgi?id=21214
Bug ID: 21214
Summary: exec_file_attach uses gdb_realpath instead of
gdb_realpath_keepfile
Product: gdb
Version: 7.10
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exec_file_attach is used atleast in 2 different scenarios:
1. When attaching to a running process.
2. When the underlying executable is modified and gdb tries to reload the
symbols + exec.
In the second case, argv[0] is modified to the linked file if the executable is
a link, which breaks the executable as it relies on the file name/path.
A similar bug was reported for an earlier version of gdb and was fixed for only
the first time the symbol file is read, but not for reload.
most likely fix:
this is based on source from
gdb-7.10(ftp://sourceware.org/pub/gdb/snapshots/branch/gdb-7.10.0.20151204.tar.xz)
diff exec.c exec.c.orig
274c274
< canonical_pathname = gdb_realpath_keepfile (scratch_pathname);
---
> canonical_pathname = gdb_realpath (scratch_pathname);
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21216] New: regression: TUI by: Eliminate
make_cleanup_ui_file_delete / make ui_file a class hierarchy
Date: Fri, 03 Mar 2017 22:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21216
Bug ID: 21216
Summary: regression: TUI by: Eliminate
make_cleanup_ui_file_delete / make ui_file a class
hierarchy
Product: gdb
Version: 8.0
Status: NEW
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PASS:
187808b04f61df1c38fda0921e2d9eeb53e332ee
= a commit before the FAIL one below
$ gdb -tui
[ TUI source window ]
GNU gdb (GDB) 7.12.50.20170202-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
---Type <return> to continue, or q <return> to quit---
FAIL:
d7e747318f4d04af033f16325f9b6d74f67079ec is the first bad commit
commit d7e747318f4d04af033f16325f9b6d74f67079ec
Author: Pedro Alves <palves@redhat.com>
Date: Thu Feb 2 11:11:47 2017 +0000
Eliminate make_cleanup_ui_file_delete / make ui_file a class hierarchy
$ gdb -tui
[ TUI source window ]
GNU gdb (GDB) 7.12.50.20170202-git
Copyright (C) 2017 Free Software Foundation,
Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and
redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show
copying"
and "show warranty" for details.
This GDB was
configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources
online at:
<http://www.gnu.org/software/gdb/documentation/>.
---Type <return> to continue, or q <return> to quit---
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To: gdb-prs@sourceware.org
Subject: [Bug tui/21216] regression: TUI by: Eliminate
make_cleanup_ui_file_delete / make ui_file a class hierarchy
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jan.kratochvil at redhat dot com
Assignee|unassigned at sourceware dot org |palves at redhat dot com
Target Milestone|--- |8.0
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>From gdb-prs-return-21043-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Mar 04 05:43:43 2017
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From: "gpmfuchs at gmx dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/17229] infinite loop in linux_check_ptrace_features
Date: Sat, 04 Mar 2017 05:43:00 -0000
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gpmfuchs at gmx dot de changed:
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CC| |gpmfuchs at gmx dot de
--- Comment #2 from gpmfuchs at gmx dot de ---
I've run repeatedly into this bug.
My use case is a c++-program which forks whenever an assert is hit or a
watch-timer is triggered, then it redirects stdout/stderr to a tmpfile and
execl to gdb, in order to get a bug report.
The bug means in my case, that gdb fills it's tmpfile with
"linux_check_ptrace_features: failed to kill child" until the /tmp mount is
full.
Which means it starves the autotest-system of memory, triggering random
OOM-kills, and as a result crashing the autobuild-system.
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From: "brobecker at gnat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
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Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-03-04
CC| |brobecker at gnat dot com
Assignee|unassigned at sourceware dot org |mishra.nitish.88 at gmail dot com
Ever confirmed|0 |1
--- Comment #6 from Joel Brobecker <brobecker at gnat dot com> ---
To get your patch reviewed, and hopefully included in the official sources, can
you please send it to gdb-patches@, using the information outlined in the
following page, please?
https://sourceware.org/gdb/wiki/ContributionChecklist
People don't necessarily follow the patches sent here. I think this is also
mentioned in the ContributionChecklist above, but do ping us after a couple of
weeks if we haven't answered, and every week thereafter.
As a comment to your patch, the style you used for the AC_ARG_ENABLE is a bit
different from the style we've been using so far. Not necessarily wrong, but
there is value for us in trying to keep the style consistent. So could you have
a look at the other uses of AC_ARG_ENABLE in gdb/configure.ac, and try to
mimick that with your patch?
Thank you.
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>From gdb-prs-return-21045-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Mar 04 17:41:30 2017
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From: "brobecker at gnat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21169] GDBServer on ARM can crash the inferior while
single stepping
Date: Sat, 04 Mar 2017 17:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21169
Joel Brobecker <brobecker at gnat dot com> changed:
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CC| |brobecker at gnat dot com
--- Comment #1 from Joel Brobecker <brobecker at gnat dot com> ---
For the record: We discussed this PR on gdb-patches@, and what we ended up
saying is that this PR is not strictly a 7.12 -> 8.0 regression, but that
it is enough of an issue that this PR is sufficiently of an issue that
we can try getting the fix in 8.0. Antoine should be this PR's champion,
and if it doesn't get fixed by our tentative 8.0 release date, we'll consider
the option of delaying the release by a week or two, if that makes a
difference.
See: https://www.sourceware.org/ml/gdb-patches/2017-02/msg00467.html
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21218] New: Regression: GDB dumps core when escaping
newline in multi line command
Date: Sun, 05 Mar 2017 12:58:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21218
Bug ID: 21218
Summary: Regression: GDB dumps core when escaping newline in
multi line command
Product: gdb
Version: 7.12
Status: NEW
Severity: normal
Priority: P2
Component: cli
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https://bugzilla.redhat.com/show_bug.cgi?id=1429172
by Georg Sauthoff
$ gdb ls
Reading symbols from ls...Reading symbols from
/usr/lib/debug/usr/bin/ls.debug...done.
done.
(gdb) b main
Breakpoint 1 at 0x3990: file ../src/ls.c, line 1347.
(gdb) commands
Type commands for breakpoint(s) 1, one per line.
End with a line saying just "end".
>silent
>print \
(gdb) argc
>end
readline: readline_callback_read_char() called with no handler!
zsh: abort (core dumped) gdb -q ls
regressed by:
commit 3b12939dfc2399200f243851fd55d0e392b64165
Author: Pedro Alves <palves@redhat.com>
Date: Tue Jun 21 01:11:51 2016 +0100
Replace the sync_execution global with a new enum prompt_state tristate
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21218] Regression: GDB dumps core when escaping newline in
multi line command
Date: Sun, 05 Mar 2017 12:59:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Created attachment 9870
--> https://sourceware.org/bugzilla/attachment.cgi?id=9870&action=edit
new testcase
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>From gdb-prs-return-21048-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Mar 05 13:00:04 2017
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Subject: [Bug cli/21218] Regression: GDB dumps core when escaping newline in
multi line command
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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>From gdb-prs-return-21049-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 06 12:41:31 2017
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From: "arnez at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21220] New: "restore" for large data structures extremely
slow on GNU/Linux
Date: Mon, 06 Mar 2017 12:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21220
Bug ID: 21220
Summary: "restore" for large data structures extremely slow on
GNU/Linux
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Assignee: unassigned at sourceware dot org
Reporter: arnez at linux dot vnet.ibm.com
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On GNU/Linux, restoring a large array does not complete in reasonable time:
(gdb) p sizeof bigarray
$1 = 16777216
(gdb) dump bin mem foo.bin &bigarray &bigarray[sizeof bigarray]
(gdb) restore foo.bin binary &bigarray
Restoring binary file foo.bin into memory (0x10002060 to 0x11002060)
This operation appears to hang.
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>From gdb-prs-return-21050-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 06 13:20:30 2017
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From: "prakhar.bahuguna at arm dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21221] New: gdb hangs while stepping an empty loop
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https://sourceware.org/bugzilla/show_bug.cgi?id=21221
Bug ID: 21221
Summary: gdb hangs while stepping an empty loop
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: prakhar.bahuguna at arm dot com
Target Milestone: ---
Created attachment 9871
--> https://sourceware.org/bugzilla/attachment.cgi?id=9871&action=edit
Reproducer test case
Given the empty for loop in the reproducer with a large number of iterations,
gdb hangs while attempting to step over a single iteration of the loop. The
server hangs and must be interrupted manually.
The issue does not present itself if the loop contains an instruction - adding
__asm("NOP"); inside the loop is sufficient to suppress the bug and allow the
loop to be stepped correctly.
This issue can be reproduced on trunk for both ARM and x86 platforms.
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>From gdb-prs-return-21051-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 06 14:42:15 2017
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Subject: [Bug gdb/21221] gdb hangs while stepping an empty loop
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Liviu Ionescu <ilg at livius dot net> changed:
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>From gdb-prs-return-21052-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 06 15:06:58 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] New: A function with a particular number of
arguments corrupts a value calculated on the stack when stepping through the
function
Date: Mon, 06 Mar 2017 15:06:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21222
Bug ID: 21222
Summary: A function with a particular number of arguments
corrupts a value calculated on the stack when stepping
through the function
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: kungfujesus06 at gmail dot com
Target Milestone: ---
Created attachment 9872
--> https://sourceware.org/bugzilla/attachment.cgi?id=9872&action=edit
Minimal test case
Sorry for the convoluted summary, I'm not entirely sure how or why it happens.
The results are fine when not attached to the debugger (or in the test case I'm
providing, not stepping into the function).
I compiled with -O0 and -g3. Put a break point in testFunc, step through with
step or next, and you'll see a corrupted value.
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Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Mon, 06 Mar 2017 15:19:00 -0000
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--- Comment #1 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Also not entirely sure it matters (it certainly might be calling convention
dependent), but this happens on x86_64. I've not tried to reproduce it on any
other architecture.
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Subject: [Bug gdb/21220] "restore" for large data structures extremely slow
on GNU/Linux
Date: Mon, 06 Mar 2017 16:04:00 -0000
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--- Comment #1 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
Suggested fix posted to gdb-patches mailing list:
https://sourceware.org/ml/gdb-patches/2017-03/msg00042.html
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Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Mon, 06 Mar 2017 21:09:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Adam Stylinski from comment #0)
> Created attachment 9872 [details]
> Minimal test case
>
> Sorry for the convoluted summary, I'm not entirely sure how or why it
> happens. The results are fine when not attached to the debugger (or in the
> test case I'm providing, not stepping into the function).
It is not clear to me what you mean here. Does the attached test case
demonstrate the problem?
> I compiled with -O0 and -g3. Put a break point in testFunc, step through
> with step or next, and you'll see a corrupted value.
I cannot reproduce this with HEAD or 7.12.1.20170306-git.
Is it possible that the compiler is re-using unused registers? "info frame",
"info addr", and "disass" should be helpful here to determine if this is the
happening.
Out of curiosity, what compiler are you using?
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Mon, 06 Mar 2017 23:42:00 -0000
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--- Comment #3 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Keith Seitz from comment #2)
> (In reply to Adam Stylinski from comment #0)
> > Created attachment 9872 [details]
> > Minimal test case
> >
> > Sorry for the convoluted summary, I'm not entirely sure how or why it
> > happens. The results are fine when not attached to the debugger (or in the
> > test case I'm providing, not stepping into the function).
>
> It is not clear to me what you mean here. Does the attached test case
> demonstrate the problem?
>
> > I compiled with -O0 and -g3. Put a break point in testFunc, step through
> > with step or next, and you'll see a corrupted value.
>
> I cannot reproduce this with HEAD or 7.12.1.20170306-git.
>
> Is it possible that the compiler is re-using unused registers? "info frame",
> "info addr", and "disass" should be helpful here to determine if this is the
> happening.
>
> Out of curiosity, what compiler are you using?
Yep, that test case does produce the behavior for me. I used g++, that bit
might matter. I forgot to add one important bit: I added -march=native, which
my case is a Haswell based CPU. But...all optimizations should be turned off,
so I'm not entirely sure what that's about. In any case, while not attached to
the debugger, I do not get this issue.
adam@Crushinator:~$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/6.3.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release
Thread model: posix
gcc version 6.3.1 20170109 (GCC)
adam@Crushinator:~$ /lib/libc.so.6
GNU C Library (GNU libc) stable release version 2.24, by Roland McGrath et al.
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
Compiled by GNU CC version 6.1.1 20160802.
Available extensions:
crypt add-on version 2.1 by Michael Glad and others
GNU Libidn by Simon Josefsson
Native POSIX Threads Library by Ulrich Drepper et al
BIND-8.2.3-T5B
libc ABIs: UNIQUE IFUNC
For bug reporting instructions, please see:
<https://bugs.archlinux.org/>.
adam@Crushinator:~$ gdb --version
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Without debugger:
adam@Crushinator:~$ ./testfunc.out
lambda = 0.031557
With:
adam@Crushinator:~$ g++ -O0 -g3 -march=native testfunc.cpp -o testfunc.out
adam@Crushinator:~$ gdb ./testfunc.out
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./testfunc.out...done.
(gdb) break testFunc
Breakpoint 1 at 0x400550: file testfunc.cpp, line 12.
(gdb) r
Starting program: /home/adam/testfunc.out
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0) at testfunc.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) p lambda
$1 = -5.38359187e+25
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Subject: [Bug c++/21222] A function with a particular number of arguments
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--- Comment #4 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Also I did search the registers as well, and it's not in the register it should
be in (xmm0) or any of the other vector registers either. I've compiled with
-fno-omit-frame-pointer and I still see the issue. The number of arguments to
the function seems to have an affect on whether or not the issue happens. That
was the bare minimum number of arguments before the issue showed up.
(gdb) disass
Dump of assembler code for function testFunc(float*, unsigned long, float*,
float*, float*, float, int, float, float**, float**, float**, float*, float*):
0x0000000000400526 <+0>: push %rbp
0x0000000000400527 <+1>: mov %rsp,%rbp
0x000000000040052a <+4>: sub $0x50,%rsp
0x000000000040052e <+8>: mov %rdi,-0x18(%rbp)
0x0000000000400532 <+12>: mov %rsi,-0x20(%rbp)
0x0000000000400536 <+16>: mov %rdx,-0x28(%rbp)
0x000000000040053a <+20>: mov %rcx,-0x30(%rbp)
0x000000000040053e <+24>: mov %r8,-0x38(%rbp)
0x0000000000400542 <+28>: vmovss %xmm0,-0x3c(%rbp)
0x0000000000400547 <+33>: mov %r9d,-0x40(%rbp)
0x000000000040054b <+37>: vmovss %xmm1,-0x44(%rbp)
0x0000000000400550 <+42>: vmovss 0x11c(%rip),%xmm0 # 0x400674
0x0000000000400558 <+50>: vdivss -0x44(%rbp),%xmm0,%xmm0
0x000000000040055d <+55>: vmovss %xmm0,-0x4(%rbp)
=> 0x0000000000400562 <+60>: vcvtss2sd -0x4(%rbp),%xmm2,%xmm2
0x0000000000400567 <+65>: vmovq %xmm2,%rax
0x000000000040056c <+70>: vmovq %rax,%xmm0
0x0000000000400571 <+75>: mov $0x400664,%edi
0x0000000000400576 <+80>: mov $0x1,%eax
0x000000000040057b <+85>: callq 0x400420 <printf@plt>
0x0000000000400580 <+90>: nop
0x0000000000400581 <+91>: leaveq
0x0000000000400582 <+92>: retq
End of assembler dump.
Here are the register contents:
http://pastebin.com/Mq4QVu24
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Mon, 06 Mar 2017 23:52:00 -0000
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--- Comment #5 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
I also should show that is in fact corrupting the stack value through the
printf statement:
(gdb) n
lambda = -53835918688661714623266816.000000
14 }
Even if this was a case of just a display bug it is a debugger bug and it'd be
nice to see the correct value. Schrodingbugs are troublesome, heh.
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>From gdb-prs-return-21059-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 06 23:56:19 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Mon, 06 Mar 2017 23:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21222
--- Comment #6 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Playing around with -march arguments, it appears this bug might be specific to
using the VEX encoded instructions as opposed to the vanilla SSE ones.
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>From gdb-prs-return-21060-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 05:29:40 2017
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From: "richard at wetafx dot co.nz" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21225] New: Which version of gdb should I use for best
reliability
Date: Tue, 07 Mar 2017 05:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21225
Bug ID: 21225
Summary: Which version of gdb should I use for best reliability
Product: gdb
Version: 7.12
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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It seems that gdb has not been reliable for about a decade.
I have been using various workarounds and hacks to avoid the problems.
I have to juggle which version of gdb to use to succeed for a particular
debugging task.
Fortunately, the --readnow option can help in some of those circumstances even
with the tremendous overhead. However, gdb can still get confused and
unresponsive.
So, in the end, my question is quite simple:
Which version of gdb should I use for the best chance of reliability?
As a side question, do the developers of gdb ever use gdb to debug gdb?
As additional questions, do the developers of gdb ever debug code that use C++
or DSOs? Do the developers ever look at examples that are larger than 10K?
(To answer a potential response question, yes I am getting a bit fed up. And
if I am getting fed up, there are many more that have given up on gdb being a
useful tool.)
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>From gdb-prs-return-21061-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 08:55:11 2017
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From: "mishra.nitish.88 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Tue, 07 Mar 2017 08:55:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
--- Comment #7 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Hi,
Sure, I will send the patch to gdb-patches mailing list after changing
the code as per your comment.
Thanks for the help.
Thanks and Regards,
Nitish
On Sat, Mar 4, 2017 at 11:02 PM, brobecker at gnat dot com
<sourceware-bugzilla@sourceware.org> wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=21187
>
> Joel Brobecker <brobecker at gnat dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|UNCONFIRMED |NEW
> Last reconfirmed| |2017-03-04
> CC| |brobecker at gnat dot com
> Assignee|unassigned at sourceware dot org |mishra.nitish.88 at gmail dot com
> Ever confirmed|0 |1
>
> --- Comment #6 from Joel Brobecker <brobecker at gnat dot com> ---
> To get your patch reviewed, and hopefully included in the official sources, can
> you please send it to gdb-patches@, using the information outlined in the
> following page, please?
>
> https://sourceware.org/gdb/wiki/ContributionChecklist
>
> People don't necessarily follow the patches sent here. I think this is also
> mentioned in the ContributionChecklist above, but do ping us after a couple of
> weeks if we haven't answered, and every week thereafter.
>
> As a comment to your patch, the style you used for the AC_ARG_ENABLE is a bit
> different from the style we've been using so far. Not necessarily wrong, but
> there is value for us in trying to keep the style consistent. So could you have
> a look at the other uses of AC_ARG_ENABLE in gdb/configure.ac, and try to
> mimick that with your patch?
>
> Thank you.
>
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>From gdb-prs-return-21062-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 10:20:54 2017
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Received: (qmail 91383 invoked by uid 48); 7 Mar 2017 10:20:53 -0000
From: "arnez at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21226] New: DW_OP_stack_value pieces yield wrong data on
big-endian targets
Date: Tue, 07 Mar 2017 10:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21226
Bug ID: 21226
Summary: DW_OP_stack_value pieces yield wrong data on
big-endian targets
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: arnez at linux dot vnet.ibm.com
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The guality test case pr54970.c from the GCC test suite yields lots of fails on
s390x. The test case defines a local variable a like this:
int a[] = { 1, 2, 3 };
and the compiler optimizes the variable away, leaving only a DWARF
representation. That's intentional; the test case verifies that the variable
can still be displayed correctly in GDB. But on s390x it can't. All elements
are shown as zero instead.
The compiler represents the array as a DWARF composite location with three
DW_OP_stack_value pieces. Each piece is 4 bytes long, and on s390x a DWARF
stack value is 8 bytes long. So GDB extracts 4 bytes out of the stack value.
But it always uses the *lowest-addressed* bytes, independent from endianness,
where GCC obviously meant the *least significant* bytes to be used. On
big-endian systems the lowest-addressed bytes are always zero in this case.
This problem should affect all big-endian systems, whenever a DWARF location
involves a DW_OP_stack_value piece that is smaller than the address size.
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>From gdb-prs-return-21063-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 10:39:31 2017
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From: "erangi at cs dot technion.ac.il" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21227] New: GDB crashes when switching layout from asm to
src
Date: Tue, 07 Mar 2017 10:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21227
Bug ID: 21227
Summary: GDB crashes when switching layout from asm to src
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: erangi at cs dot technion.ac.il
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While debugging using gdbtui, GDB crashed when I switched layouts from asm to
src. This happened to me twice. The issue I was trying to fix appears after an
hour of execution, and I couldn't reproduce the crash on shorter runs. The
crash report:
*** Error in `/usr/bin/gdb': double free or corruption (!prev):
0x000000000954f820 ***
======= Backtrace: =========
/lib/x86_64-linux-gnu/libc.so.6(+0x777e5)[0x7f1cc30047e5]
/lib/x86_64-linux-gnu/libc.so.6(+0x7fe0a)[0x7f1cc300ce0a]
/lib/x86_64-linux-gnu/libc.so.6(cfree+0x4c)[0x7f1cc301098c]
/usr/bin/gdb[0x4f6304]
/usr/bin/gdb(tui_free_win_content+0x20)[0x4f6d00]
/usr/bin/gdb(tui_free_all_source_wins_content+0x30)[0x4f6d50]
/usr/bin/gdb[0x4f9722]
/usr/bin/gdb[0x4f9e29]
/usr/bin/gdb(tui_set_layout_by_name+0x9b)[0x4fa2cb]
/usr/bin/gdb[0x4fa3f9]
/usr/bin/gdb(execute_command+0x256)[0x69db16]
/usr/bin/gdb[0x5d487c]
/usr/bin/gdb[0x5d4f5f]
/lib/x86_64-linux-gnu/libreadline.so.6(rl_callback_read_char+0x145)[0x7f1cc50286f5]
/usr/bin/gdb[0x5d48d9]
/usr/bin/gdb(stdin_event_handler+0x23)[0x5d4923]
/usr/bin/gdb[0x5d3705]
/usr/bin/gdb(gdb_do_one_event+0xb9)[0x5d38a9]
/usr/bin/gdb(start_event_loop+0x4e)[0x5d39ee]
/usr/bin/gdb[0x5cd3b3]
/usr/bin/gdb(catch_errors+0x9d)[0x5ca1cd]
/usr/bin/gdb[0x5cdfa6]
/usr/bin/gdb(catch_errors+0x9d)[0x5ca1cd]
/usr/bin/gdb(gdb_main+0x1b)[0x5ce87b]
/usr/bin/gdb(main+0x35)[0x45eca5]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f1cc2fad830]
/usr/bin/gdb(_start+0x29)[0x45ece9]
======= Memory map: ========
00400000-00a29000 r-xp 00000000 08:13 23200263
/usr/bin/gdb
00c29000-00c2a000 r--p 00629000 08:13 23200263
/usr/bin/gdb
00c2a000-00c3e000 rw-p 0062a000 08:13 23200263
/usr/bin/gdb
00c3e000-00c61000 rw-p 00000000 00:00 0
027a4000-0aac5000 rw-p 00000000 00:00 0 [heap]
7f1cb4000000-7f1cb4021000 rw-p 00000000 00:00 0
7f1cb4021000-7f1cb8000000 ---p 00000000 00:00 0
7f1cbbb7b000-7f1cbbb91000 r-xp 00000000 08:13 1835073
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbbb91000-7f1cbbd90000 ---p 00016000 08:13 1835073
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbbd90000-7f1cbbd91000 r--p 00015000 08:13 1835073
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbbd91000-7f1cbbd92000 rw-p 00016000 08:13 1835073
/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbbd92000-7f1cbc012000 r--p 00620000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbc012000-7f1cbc177000 r--p 000df000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cbc177000-7f1cbc196000 r--p 000b7000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cbc196000-7f1cbc198000 r-xp 00000000 08:13 23204900
/usr/lib/x86_64-linux-gnu/gconv/UTF-32.so
7f1cbc198000-7f1cbc397000 ---p 00002000 08:13 23204900
/usr/lib/x86_64-linux-gnu/gconv/UTF-32.so
7f1cbc397000-7f1cbc398000 r--p 00001000 08:13 23204900
/usr/lib/x86_64-linux-gnu/gconv/UTF-32.so
7f1cbc398000-7f1cbc399000 rw-p 00002000 08:13 23204900
/usr/lib/x86_64-linux-gnu/gconv/UTF-32.so
7f1cbc399000-7f1cbc564000 r--p 006d6000 00:2c 28357232
/home/erangi/yahoo/piwi/libpiwi.so
7f1cbc564000-7f1cbc5b4000 r--p 0089f000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbc5b4000-7f1cbc684000 r--p 0052b000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbc684000-7f1cbc720000 r--p 00490000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbc720000-7f1cbcb9e000 r--p 00013000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbcb9e000-7f1cbcbde000 rw-p 00000000 00:00 0
7f1cbcbec000-7f1cbcbf4000 r--p 00023000 08:13 26216533
/usr/lib/debug/lib/x86_64-linux-gnu/librt-2.23.so
7f1cbcbf4000-7f1cbcbfe000 r--p 0006d000 00:2c 28357232
/home/erangi/yahoo/piwi/libpiwi.so
7f1cbcbfe000-7f1cbcc06000 r--p 0002e000 08:13 23204321
/usr/lib/x86_64-linux-gnu/libtbb.so.2
7f1cbcc06000-7f1cbcc16000 r--p 00000000 08:13 26216537
/usr/lib/debug/lib/x86_64-linux-gnu/libdl-2.23.so
7f1cbcc16000-7f1cbcc3d000 r--p 005fa000 08:13 26216540
/usr/lib/debug/lib/x86_64-linux-gnu/libc-2.23.so
7f1cbcc3d000-7f1cbcc4b000 r--p 00053000 08:13 26214755
/usr/lib/debug/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbcc4b000-7f1cbcc57000 r--p 00048000 08:13 26214755
/usr/lib/debug/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbcc57000-7f1cbccde000 r--p 00006000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cbccde000-7f1cbcd1e000 rw-p 00000000 00:00 0
7f1cbcd23000-7f1cbcd28000 r--p 00092000 08:13 26214755
/usr/lib/debug/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbcd28000-7f1cbcd70000 r--p 00001000 08:13 26214755
/usr/lib/debug/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cbcd70000-7f1cbcd9e000 r--p 000ac000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cbcd9e000-7f1cbcf44000 r--p 03749000 00:2c 3177188
[debugged program]
7f1cbcf44000-7f1cbd270000 r--p 05281000 00:2c 3177188
[debugged program]
7f1cbd270000-7f1cbdb84000 r--p 038ee000 00:2c 3177188
[debugged program]
7f1cbdb84000-7f1cbdc45000 r--p 03689000 00:2c 3177188
[debugged program]
7f1cbdc45000-7f1cc0e1c000 r--p 004b3000 00:2c 3177188
[debugged program]
7f1cc0e1c000-7f1cc11f1000 rw-p 00000000 00:00 0
7f1cc11f1000-7f1cc1226000 r--p 004f4000 00:2c 28357232
[debugged program]
7f1cc1226000-7f1cc1292000 r--p 008a0000 00:2c 28357232
[debugged program]
7f1cc1292000-7f1cc1441000 r--p 00528000 00:2c 28357232
[debugged program]
7f1cc1441000-7f1cc145f000 r--p 004d7000 00:2c 28357232
[debugged program]
7f1cc145f000-7f1cc18ba000 r--p 0007d000 00:2c 28357232
[debugged program]
7f1cc18ba000-7f1cc18c2000 r-xp 00000000 08:13 1835076
/lib/x86_64-linux-gnu/libthread_db-1.0.so
7f1cc18c2000-7f1cc1ac1000 ---p 00008000 08:13 1835076
/lib/x86_64-linux-gnu/libthread_db-1.0.so
7f1cc1ac1000-7f1cc1ac2000 r--p 00007000 08:13 1835076
/lib/x86_64-linux-gnu/libthread_db-1.0.so
7f1cc1ac2000-7f1cc1ac3000 rw-p 00008000 08:13 1835076
/lib/x86_64-linux-gnu/libthread_db-1.0.so
7f1cc1ac7000-7f1cc1ae0000 r--p 00000000 08:13 26216533
/usr/lib/debug/lib/x86_64-linux-gnu/librt-2.23.so
7f1cc1ae0000-7f1cc1b62000 r--p 00003000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cc1b62000-7f1cc1b9a000 r--p 0007f000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc1b9a000-7f1cc1c1b000 rw-p 00000000 00:00 0
7f1cc1c1b000-7f1cc1d3b000 r--p 004cd000 00:2c 13462680
[debugged program]
7f1cc1d3c000-7f1cc1d42000 r--p 00060000 08:13 26214755
/usr/lib/debug/lib/x86_64-linux-gnu/libgcc_s.so.1
7f1cc1d42000-7f1cc1d5b000 r--p 00098000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cc1d5b000-7f1cc1dbc000 r--p 00001000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc1dbc000-7f1cc1ddb000 r--p 0023c000 00:2c 13462680
[debugged program]
7f1cc1ddd000-7f1cc1de4000 r--p 000d9000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc1de4000-7f1cc1de9000 r--p 0001c000 08:13 26216533
/usr/lib/debug/lib/x86_64-linux-gnu/librt-2.23.so
7f1cc1de9000-7f1cc1df1000 r--p 000b0000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cc1df1000-7f1cc1df7000 r--p 000d5000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cc1df7000-7f1cc1e0c000 r--p 00084000 08:13 4328132
/usr/lib/debug/.build-id/4d/7f52f335dc9665c2dcf308ce6514a6ae86dede.debug
7f1cc1e0c000-7f1cc1e1b000 r--p 0006b000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc1e1b000-7f1cc1e62000 r--p 005ec000 00:2c 13462680
[debugged program]
7f1cc1e62000-7f1cc20d6000 r--p 0025a000 00:2c 13462680
[debugged program]
7f1cc20d6000-7f1cc22c4000 r--p 00044000 00:2c 13462680
[debugged program]
7f1cc22c4000-7f1cc2344000 rw-p 00000000 00:00 0
7f1cc2344000-7f1cc234a000 r--p 0003b000 00:2c 13462680
[debugged program]
7f1cc234a000-7f1cc2353000 r--p 000b6000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc2384000-7f1cc2604000 rw-p 00000000 00:00 0
7f1cc2604000-7f1cc2672000 r-xp 00000000 08:13 1835158
/lib/x86_64-linux-gnu/libpcre.so.3.13.2
7f1cc2672000-7f1cc2872000 ---p 0006e000 08:13 1835158
/lib/x86_64-linux-gnu/libpcre.so.3.13.2
7f1cc2872000-7f1cc2873000 r--p 0006e000 08:13 1835158
/lib/x86_64-linux-gnu/libpcre.so.3.13.2
7f1cc2873000-7f1cc2874000 rw-p 0006f000 08:13 1835158
/lib/x86_64-linux-gnu/libpcre.so.3.13.2
7f1cc2874000-7f1cc2878000 r-xp 00000000 08:13 1835113
/lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f1cc2878000-7f1cc2a77000 ---p 00004000 08:13 1835113
/lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f1cc2a77000-7f1cc2a78000 r--p 00003000 08:13 1835113
/lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f1cc2a78000-7f1cc2a79000 rw-p 00004000 08:13 1835113
/lib/x86_64-linux-gnu/libuuid.so.1.3.0
7f1cc2a79000-7f1cc2b88000 r-xp 00000000 08:13 1835592
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2
7f1cc2b88000-7f1cc2d87000 ---p 0010f000 08:13 1835592
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2
7f1cc2d87000-7f1cc2d88000 r--p 0010e000 08:13 1835592
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2
7f1cc2d88000-7f1cc2d89000 rw-p 0010f000 08:13 1835592
/lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2
7f1cc2d89000-7f1cc2d8a000 rw-p 00000000 00:00 0
7f1cc2d8a000-7f1cc2d8c000 r-xp 00000000 08:13 1835078
/lib/x86_64-linux-gnu/libutil-2.23.so
7f1cc2d8c000-7f1cc2f8b000 ---p 00002000 08:13 1835078
/lib/x86_64-linux-gnu/libutil-2.23.so
7f1cc2f8b000-7f1cc2f8c000 r--p 00001000 08:13 1835078
/lib/x86_64-linux-gnu/libutil-2.23.so
7f1cc2f8c000-7f1cc2f8d000 rw-p 00002000 08:13 1835078
/lib/x86_64-linux-gnu/libutil-2.23.so
7f1cc2f8d000-7f1cc314c000 r-xp 00000000 08:13 1835120
/lib/x86_64-linux-gnu/libc-2.23.so
7f1cc314c000-7f1cc334c000 ---p 001bf000 08:13 1835120
/lib/x86_64-linux-gnu/libc-2.23.so
7f1cc334c000-7f1cc3350000 r--p 001bf000 08:13 1835120
/lib/x86_64-linux-gnu/libc-2.23.so
7f1cc3350000-7f1cc3352000 rw-p 001c3000 08:13 1835120
/lib/x86_64-linux-gnu/libc-2.23.so
7f1cc3352000-7f1cc3356000 rw-p 00000000 00:00 0
7f1cc3356000-7f1cc338e000 r-xp 00000000 08:13 23200275
/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0
7f1cc338e000-7f1cc358d000 ---p 00038000 08:13 23200275
/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0
7f1cc358d000-7f1cc358f000 r--p 00037000 08:13 23200275
/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0
7f1cc358f000-7f1cc3590000 rw-p 00039000 08:13 23200275
/usr/lib/x86_64-linux-gnu/libbabeltrace-ctf.so.1.0.0
7f1cc3590000-7f1cc359c000 r-xp 00000000 08:13 23200233
/usr/lib/x86_64-linux-gnu/libbabeltrace.so.1.0.0
7f1cc359c000-7f1cc379b000 ---p 0000c000 08:13 23200233
/usr/lib/x86_64-linux-gnu/libbabeltrace.so.1.0.0
7f1cc379b000-7f1cc379c000 r--p 0000b000 08:13 23200233
/usr/lib/x86_64-linux-gnu/libbabeltrace.so.1.0.0
7f1cc379c000-7f1cc379d000 rw-p 0000c000 08:13 23200233
/usr/lib/x86_64-linux-gnu/libbabeltrace.so.1.0.0
7f1cc379d000-7f1cc37be000 r-xp 00000000 08:13 1835213
/lib/x86_64-linux-gnu/liblzma.so.5.0.0
7f1cc37be000-7f1cc39bd000 ---p 00021000 08:13 1835213
/lib/x86_64-linux-gnu/liblzma.so.5.0.0
7f1cc39bd000-7f1cc39be000 r--p 00020000 08:13 1835213
/lib/x86_64-linux-gnu/liblzma.so.5.0.0
7f1cc39be000-7f1cc39bf000 rw-p 00021000 08:13 1835213
/lib/x86_64-linux-gnu/liblzma.so.5.0.0
7f1cc39bf000-7f1cc39e5000 r-xp 00000000 08:13 1835167
/lib/x86_64-linux-gnu/libexpat.so.1.6.0
7f1cc39e5000-7f1cc3be5000 ---p 00026000 08:13 1835167
/lib/x86_64-linux-gnu/libexpat.so.1.6.0
7f1cc3be5000-7f1cc3be7000 r--p 00026000 08:13 1835167
/lib/x86_64-linux-gnu/libexpat.so.1.6.0
7f1cc3be7000-7f1cc3be8000 rw-p 00028000 08:13 1835167
/lib/x86_64-linux-gnu/libexpat.so.1.6.0
7f1cc3be8000-7f1cc3c00000 r-xp 00000000 08:13 1835127
/lib/x86_64-linux-gnu/libpthread-2.23.so
7f1cc3c00000-7f1cc3dff000 ---p 00018000 08:13 1835127
/lib/x86_64-linux-gnu/libpthread-2.23.so
7f1cc3dff000-7f1cc3e00000 r--p 00017000 08:13 1835127
/lib/x86_64-linux-gnu/libpthread-2.23.so
7f1cc3e00000-7f1cc3e01000 rw-p 00018000 08:13 1835127
/lib/x86_64-linux-gnu/libpthread-2.23.so
7f1cc3e01000-7f1cc3e05000 rw-p 00000000 00:00 0
7f1cc3e05000-7f1cc41c3000 r-xp 00000000 08:13 23211230
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
7f1cc41c3000-7f1cc43c2000 ---p 003be000 08:13 23211230
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
7f1cc43c2000-7f1cc43c4000 r--p 003bd000 08:13 23211230
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
7f1cc43c4000-7f1cc445b000 rw-p 003bf000 08:13 23211230
/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
7f1cc445b000-7f1cc448c000 rw-p 00000000 00:00 0
7f1cc448c000-7f1cc4594000 r-xp 00000000 08:13 1835126
/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc4594000-7f1cc4793000 ---p 00108000 08:13 1835126
/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc4793000-7f1cc4794000 r--p 00107000 08:13 1835126
/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc4794000-7f1cc4795000 rw-p 00108000 08:13 1835126
/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc4795000-7f1cc47ba000 r-xp 00000000 08:13 1835221
/lib/x86_64-linux-gnu/libtinfo.so.5.9
7f1cc47ba000-7f1cc49b9000 ---p 00025000 08:13 1835221
/lib/x86_64-linux-gnu/libtinfo.so.5.9
7f1cc49b9000-7f1cc49bd000 r--p 00024000 08:13 1835221
/lib/x86_64-linux-gnu/libtinfo.so.5.9
7f1cc49bd000-7f1cc49be000 rw-p 00028000 08:13 1835221
/lib/x86_64-linux-gnu/libtinfo.so.5.9
7f1cc49be000-7f1cc49df000 r-xp 00000000 08:13 1835185
/lib/x86_64-linux-gnu/libncurses.so.5.9
7f1cc49df000-7f1cc4bde000 ---p 00021000 08:13 1835185
/lib/x86_64-linux-gnu/libncurses.so.5.9
7f1cc4bde000-7f1cc4bdf000 r--p 00020000 08:13 1835185
/lib/x86_64-linux-gnu/libncurses.so.5.9
7f1cc4bdf000-7f1cc4be0000 rw-p 00021000 08:13 1835185
/lib/x86_64-linux-gnu/libncurses.so.5.9
7f1cc4be0000-7f1cc4be3000 r-xp 00000000 08:13 1835112
/lib/x86_64-linux-gnu/libdl-2.23.so
7f1cc4be3000-7f1cc4de2000 ---p 00003000 08:13 1835112
/lib/x86_64-linux-gnu/libdl-2.23.so
7f1cc4de2000-7f1cc4de3000 r--p 00002000 08:13 1835112
/lib/x86_64-linux-gnu/libdl-2.23.so
7f1cc4de3000-7f1cc4de4000 rw-p 00003000 08:13 1835112
/lib/x86_64-linux-gnu/libdl-2.23.so
7f1cc4de4000-7f1cc4dfd000 r-xp 00000000 08:13 1835955
/lib/x86_64-linux-gnu/libz.so.1.2.8
7f1cc4dfd000-7f1cc4ffc000 ---p 00019000 08:13 1835955
/lib/x86_64-linux-gnu/libz.so.1.2.8
7f1cc4ffc000-7f1cc4ffd000 r--p 00018000 08:13 1835955
/lib/x86_64-linux-gnu/libz.so.1.2.8
7f1cc4ffd000-7f1cc4ffe000 rw-p 00019000 08:13 1835955
/lib/x86_64-linux-gnu/libz.so.1.2.8
7f1cc4ffe000-7f1cc503b000 r-xp 00000000 08:13 1837537
/lib/x86_64-linux-gnu/libreadline.so.6.3
7f1cc503b000-7f1cc523b000 ---p 0003d000 08:13 1837537
/lib/x86_64-linux-gnu/libreadline.so.6.3
7f1cc523b000-7f1cc523d000 r--p 0003d000 08:13 1837537
/lib/x86_64-linux-gnu/libreadline.so.6.3
7f1cc523d000-7f1cc5243000 rw-p 0003f000 08:13 1837537
/lib/x86_64-linux-gnu/libreadline.so.6.3
7f1cc5243000-7f1cc5244000 rw-p 00000000 00:00 0
7f1cc5244000-7f1cc526a000 r-xp 00000000 08:13 1835074
/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc526c000-7f1cc5277000 r--p 00061000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc5277000-7f1cc5287000 r--p 00243000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc5287000-7f1cc52a8000 r--p 0008c000 08:13 26216545
/usr/lib/debug/lib/x86_64-linux-gnu/libm-2.23.so
7f1cc52a8000-7f1cc5440000 r--p 00000000 08:13 23205801
/usr/lib/locale/locale-archive
7f1cc5440000-7f1cc544a000 rw-p 00000000 00:00 0
7f1cc544b000-7f1cc544c000 rw-p 00000000 00:00 0
7f1cc544c000-7f1cc5453000 r--p 00079000 08:13 26216526
/usr/lib/debug/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc5453000-7f1cc5454000 rw-p 00000000 00:00 0
7f1cc5454000-7f1cc5460000 r--p 00231000 00:2c 13462680
[debugged program]
7f1cc5460000-7f1cc5467000 r--s 00000000 08:13 23204883
/usr/lib/x86_64-linux-gnu/gconv/gconv-modules.cache
7f1cc5467000-7f1cc5469000 rw-p 00000000 00:00 0
7f1cc5469000-7f1cc546a000 r--p 00025000 08:13 1835074
/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc546a000-7f1cc546b000 rw-p 00026000 08:13 1835074
/lib/x86_64-linux-gnu/ld-2.23.so
7f1cc546b000-7f1cc546c000 rw-p 00000000 00:00 0
7fff9bf1d000-7fff9bf3e000 rw-p 00000000 00:00 0
[stack]
7fff9bf45000-7fff9bf47000 r--p 00000000 00:00 0 [vvar]
7fff9bf47000-7fff9bf49000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0
[vsyscall]
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Tue, 07 Mar 2017 12:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
Nitish K Mishra <mishra.nitish.88 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9860|0 |1
is obsolete| |
--- Comment #9 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9878
--> https://sourceware.org/bugzilla/attachment.cgi?id=9878&action=edit
Updated ChangeLog
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
Nitish K Mishra <mishra.nitish.88 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9850|0 |1
is obsolete| |
--- Comment #8 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9877
--> https://sourceware.org/bugzilla/attachment.cgi?id=9877&action=edit
Updated patch
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>From gdb-prs-return-21067-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 12:21:24 2017
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To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Tue, 07 Mar 2017 12:21:00 -0000
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--- Comment #11 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Created attachment 9880
--> https://sourceware.org/bugzilla/attachment.cgi?id=9880&action=edit
disable_static_linking.patch
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>From gdb-prs-return-21066-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 12:21:24 2017
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To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Tue, 07 Mar 2017 12:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21187
--- Comment #10 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Hi,
I have updated the patch as per your comment and sent it to
gdb-patches@ and have uploaded the same to the PR 21187
on bugzilla. I am attaching one copy here as well. Please find the attachment.
One thing more, Yao Qi told me that configure.ac file is maintained by
gcc community, So I should sent the patch to gcc-patches@
and get approval from there. So, I am mailing one copy of the patch
there as well.
I am new to the community, so, don't have much exposure here. Anything
else I need to do or follow-up ?
Thanks and Regards,
Nitish
On Tue, Mar 7, 2017 at 2:24 PM, Nitish Kumar Mishra
<mishra.nitish.88@gmail.com> wrote:
> Hi,
>
> Sure, I will send the patch to gdb-patches mailing list after changing
> the code as per your comment.
> Thanks for the help.
>
> Thanks and Regards,
> Nitish
>
>
> On Sat, Mar 4, 2017 at 11:02 PM, brobecker at gnat dot com
> <sourceware-bugzilla@sourceware.org> wrote:
>> https://sourceware.org/bugzilla/show_bug.cgi?id=21187
>>
>> Joel Brobecker <brobecker at gnat dot com> changed:
>>
>> What |Removed |Added
>> ----------------------------------------------------------------------------
>> Status|UNCONFIRMED |NEW
>> Last reconfirmed| |2017-03-04
>> CC| |brobecker at gnat dot com
>> Assignee|unassigned at sourceware dot org |mishra.nitish.88 at gmail dot com
>> Ever confirmed|0 |1
>>
>> --- Comment #6 from Joel Brobecker <brobecker at gnat dot com> ---
>> To get your patch reviewed, and hopefully included in the official sources, can
>> you please send it to gdb-patches@, using the information outlined in the
>> following page, please?
>>
>> https://sourceware.org/gdb/wiki/ContributionChecklist
>>
>> People don't necessarily follow the patches sent here. I think this is also
>> mentioned in the ContributionChecklist above, but do ping us after a couple of
>> weeks if we haven't answered, and every week thereafter.
>>
>> As a comment to your patch, the style you used for the AC_ARG_ENABLE is a bit
>> different from the style we've been using so far. Not necessarily wrong, but
>> there is value for us in trying to keep the style consistent. So could you have
>> a look at the other uses of AC_ARG_ENABLE in gdb/configure.ac, and try to
>> mimick that with your patch?
>>
>> Thank you.
>>
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>From gdb-prs-return-21068-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 12:23:35 2017
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From: "arnez at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
big-endian targets
Date: Tue, 07 Mar 2017 12:23:00 -0000
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--- Comment #1 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
An old version of GDB's DWARF stack value piece handling took the pieces from
the LSB end, as it should. But this was broken when adding typed DWARF stack
support (bug 12617, commit 8a9b8146fd) in May 2011.
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>From gdb-prs-return-21069-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 12:37:09 2017
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To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Tue, 07 Mar 2017 12:37:00 -0000
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--- Comment #12 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Please ignore "Updated patch" and "Updated ChangeLog" attachment, as they are
duplicate of "disable_static_linking.patch" and "Changelog.txt" respectively.
Mistakenly, I uploaded the files here and sent it via mail as well, so they got
duplicated.
Sorry for the inconvenience.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
Date: Tue, 07 Mar 2017 12:59:00 -0000
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Orgad Shaneh <orgads at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |orgads at gmail dot com
--- Comment #5 from Orgad Shaneh <orgads at gmail dot com> ---
It still happens with 7.12.1 when I type an invalid command. Trace:
1 msvcrt!abort
2 uw_init_context_1
3 _Unwind_RaiseException
4 __cxa_throw
5 throw_exception_cxx common-exceptions.c 303
6 throw_exception common-exceptions.c 317
7 throw_it common-exceptions.c 373
8 throw_verror common-exceptions.c 379
9 verror utils.c 525
10 error errors.c 43
11 undef_cmd_error cli-decode.c 1475
12 lookup_cmd cli-decode.c 1517
13 execute_command top.c 630
14 command_handler event-top.c 641
15 command_line_handler event-top.c 833
16 gdb_rl_callback_handler event-top.c 213
17 rl_callback_read_char callback.c 220
18 gdb_rl_callback_read_char_wrapper_noexcept event-top.c 175
19 gdb_rl_callback_read_char_wrapper event-top.c 192
20 stdin_event_handler event-top.c 568
21 handle_file_event event-loop.c 733
22 gdb_wait_for_event event-loop.c 884
23 gdb_do_one_event event-loop.c 347
24 gdb_do_one_event common-exceptions.h 225
25 start_event_loop event-loop.c 371
26 captured_command_loop main.c 324
27 catch_errors exceptions.c 236
28 captured_main main.c 1149
29 gdb_main main.c 1159
30 main gdb.c 32
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
entering any invalid command
Date: Tue, 07 Mar 2017 13:02:00 -0000
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Orgad Shaneh <orgads at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |orgads at gmail dot com
--- Comment #1 from Orgad Shaneh <orgads at gmail dot com> ---
Looks like a C++ exception is thrown by error(), but it is not catched in
catch_errors().
Trace:
1 msvcrt!abort
2 uw_init_context_1
3 _Unwind_RaiseException
4 __cxa_throw
5 throw_exception_cxx common-exceptions.c 303
6 throw_exception common-exceptions.c 317
7 throw_it common-exceptions.c 373
8 throw_verror common-exceptions.c 379
9 verror utils.c 525
10 error errors.c 43
11 undef_cmd_error cli-decode.c 1475
12 lookup_cmd cli-decode.c 1517
13 execute_command top.c 630
14 command_handler event-top.c 641
15 command_line_handler event-top.c 833
16 gdb_rl_callback_handler event-top.c 213
17 rl_callback_read_char callback.c 220
18 gdb_rl_callback_read_char_wrapper_noexcept event-top.c 175
19 gdb_rl_callback_read_char_wrapper event-top.c 192
20 stdin_event_handler event-top.c 568
21 handle_file_event event-loop.c 733
22 gdb_wait_for_event event-loop.c 884
23 gdb_do_one_event event-loop.c 347
24 gdb_do_one_event common-exceptions.h 225
25 start_event_loop event-loop.c 371
26 captured_command_loop main.c 324
27 catch_errors exceptions.c 236
28 captured_main main.c 1149
29 gdb_main main.c 1159
30 main gdb.c 32
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #6 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Orgad Shaneh from comment #5)
> It still happens with 7.12.1 when I type an invalid command. Trace:
>
> 1 msvcrt!abort
> 2 uw_init_context_1
> 3 _Unwind_RaiseException
> 4 __cxa_throw
> 5 throw_exception_cxx common-exceptions.c 303
> 6 throw_exception common-exceptions.c 317
> 7 throw_it common-exceptions.c 373
> 8 throw_verror common-exceptions.c 379
> 9 verror utils.c 525
> 10 error errors.c 43
> 11 undef_cmd_error cli-decode.c 1475
> 12 lookup_cmd cli-decode.c 1517
> 13 execute_command top.c 630
> 14 command_handler event-top.c 641
> 15 command_line_handler event-top.c 833
> 16 gdb_rl_callback_handler event-top.c 213
> 17 rl_callback_read_char callback.c 220
> 18 gdb_rl_callback_read_char_wrapper_noexcept event-top.c 175
> 19 gdb_rl_callback_read_char_wrapper event-top.c 192
> 20 stdin_event_handler event-top.c 568
> 21 handle_file_event event-loop.c 733
> 22 gdb_wait_for_event event-loop.c 884
> 23 gdb_do_one_event event-loop.c 347
> 24 gdb_do_one_event common-exceptions.h 225
> 25 start_event_loop event-loop.c 371
> 26 captured_command_loop main.c 324
> 27 catch_errors exceptions.c 236
> 28 captured_main main.c 1149
> 29 gdb_main main.c 1159
> 30 main gdb.c 32
What is your compiler building GDB? So far, we only tested on DW2 and SJLJ
exception implementations. If your compiler is MSVC, Structured Exception
Handling (SEH) is possibly used. As far as I am aware of, we didn't test it
before.
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
Date: Tue, 07 Mar 2017 14:53:00 -0000
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--- Comment #7 from Orgad Shaneh <orgads at gmail dot com> ---
> What is your compiler building GDB?
mingw32 (on msys2 environment). It works fine with mingw64, but fails with 32.
There's actually a separate bug report for this:
https://sourceware.org/bugzilla/show_bug.cgi?id=21078
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Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
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--- Comment #2 from Orgad Shaneh <orgads at gmail dot com> ---
Actually the exception should be catched in gdb_rl_callback_handler.
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Orgad Shaneh from comment #7)
> > What is your compiler building GDB?
>
> mingw32 (on msys2 environment). It works fine with mingw64, but fails with
> 32.
>
Could you elaborate on what does work and what doesn't (mingw32 and mingw64)?
This PR is about i686-w64-mingw32, and it was fixed.
> There's actually a separate bug report for this:
> https://sourceware.org/bugzilla/show_bug.cgi?id=21078
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #9 from Orgad Shaneh <orgads at gmail dot com> ---
> Could you elaborate on what does work and what doesn't (mingw32 and mingw64)? This PR is about i686-w64-mingw32, and it was fixed.
mingw64 seems to work fine.
mingw32 (i686-w64-mingw32) crashes when entering an invalid command. Tested
with 7.12.1.
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #10 from Pedro Alves <palves at redhat dot com> ---
#1 - What does "i686-w64-mingw32-gcc -v" say? Is this a SJLJ or a DW2
toolchain?
#2 - Could you try relinking gdb without -static-libgcc and -static-libstdc++ ?
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #11 from Orgad Shaneh <orgads at gmail dot com> ---
> #1 - What does "i686-w64-mingw32-gcc -v" say? Is this a SJLJ or a DW2 toolchain?
--disable-sjlj-exceptions --with-dwarf2
> #2 - Could you try relinking gdb without -static-libgcc and -static-libstdc++ ?
That solves it.
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Subject: [Bug gdb/20977] GDB exception handling is broken on i686-w64-mingw32
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--- Comment #12 from Pedro Alves <palves at redhat dot com> ---
> > #2 - Could you try relinking gdb without -static-libgcc and -static-libstdc++ ?
> That solves it.
OK, there's a pending patch to add a configure option to disable those already.
See bug 21187.
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at sourceware dot org |arnez at linux dot vnet.ibm.com
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>From gdb-prs-return-21081-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 15:59:02 2017
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Subject: [Bug gdb/12616] gdb does not implement DW_AT_data_bit_offset
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
(In reply to cvs-commit@gcc.gnu.org from comment #3)
> The master branch has been updated by Andreas Arnez <arnez@sourceware.org>:
>
> https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;
> h=da5b30da2d1167591aa8d71b543f97bfdc2ec2a2
This commit fixes the missing support for DW_AT_data_bit_offset.
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>From gdb-prs-return-21082-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 16:05:38 2017
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Subject: [Bug gdb/21220] "restore" for large data structures extremely slow
on GNU/Linux
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
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Ever confirmed|0 |1
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>From gdb-prs-return-21083-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 16:08:24 2017
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Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
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>From gdb-prs-return-21084-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 16:09:07 2017
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Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
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>From gdb-prs-return-21085-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 17:18:18 2017
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From: "orgads at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
entering any invalid command
Date: Tue, 07 Mar 2017 17:18:00 -0000
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--- Comment #3 from Orgad Shaneh <orgads at gmail dot com> ---
Linking without -static-libstdc++ and -static-libgcc fixes this. There's a
pending patch in bug 21187.
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>From gdb-prs-return-21086-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 17:48:46 2017
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From: "jhb at FreeBSD dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
FreeBSD 11.0
Date: Tue, 07 Mar 2017 17:48:00 -0000
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jhb at FreeBSD dot org changed:
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CC| |jhb at FreeBSD dot org
--- Comment #4 from jhb at FreeBSD dot org ---
The issue is that the gnulib test checks for max_align_t using the C compiler
but gdb is then compiled as C++. On FreeBSD 11.0, max_align_t is not defined
in C, but is defined by libc++ when using C++. Thus, the configure tests
gnulib runs don't find max_align_t, but when compiling with C++ the definition
in libc++'s <stddef> triggers the error.
I've fixed this in FreeBSD upstream by defining a proper max_align_t (the one
in libc++ doesn't match the ABI of the one GCC uses) in both C and C++ in the
base OS <stddef.h>. Additionally, in the port of gdb in the FreeBSD ports tree
I use a local patch to disable the use of max_align_t from the gnulib header as
a workaround for FreeBSD versions without max_align_t defined in C.
The relevant commits to FreeBSD are:
https://svnweb.freebsd.org/base?view=revision&revision=307756
https://svnweb.freebsd.org/base?view=revision&revision=309274
(both of which are merged to 11 and will be present in 11.1 when it is
released).
The hacky patch I use in the gdb port on FreeBSD is:
https://svnweb.freebsd.org/ports/head/devel/gdb/files/patch-gdb-gnulib-import-stddef.in.h?view=co
(The irony is that neither GDB nor binutils even use max_align_t.)
I chose to fix the issue in this was as I considered the lack of max_align_t
(which C11 requires) when compiling C in FreeBSD the bug.
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>From gdb-prs-return-21087-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 21:44:48 2017
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
FreeBSD 11.0
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Chris Johns <chrisj at rtems dot org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Chris Johns <chrisj at rtems dot org> ---
Thanks John, the patches resolve the issue for me. I will close this bug as
invalid as it does not effect GDB.
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>From gdb-prs-return-21088-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 07 23:59:50 2017
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Subject: [Bug tui/21216] [8.0 regression]: TUI line breaks regression
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|regression: TUI by: |[8.0 regression]: TUI line
|Eliminate |breaks regression
|make_cleanup_ui_file_delete |
|/ make ui_file a class |
|hierarchy |
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Subject: [Bug tui/21216] [8.0 regression]: TUI line breaks regression
Date: Wed, 08 Mar 2017 00:19:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9753a2f6d74dc92d2ad94993a5479ee0edbc6887
commit 9753a2f6d74dc92d2ad94993a5479ee0edbc6887
Author: Pedro Alves <palves@redhat.com>
Date: Wed Mar 8 00:14:59 2017 +0000
Fix PR tui/21216: TUI line breaks regression
Commit d7e747318f4d04 ("Eliminate make_cleanup_ui_file_delete / make
ui_file a class hierarchy") regressed the TUI's command window.
Newlines miss doing a "carriage return", resulting in output like:
~~~~~~~~~~~~~~~~~~
(gdb) helpList of classes of commands:
aliases -- Aliases of other commands
breakpoints -- Making program stop at certain points
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Before the commit mentioned above, the default ui_file->to_write
implementation had a hack that would defer into the ui_file->to_fputs
method. The TUI's ui_file did not implement the to_write method, so
all writes would end up going to the ncurses window via tui_file_fputs
-> tui_puts.
After the commit above, the hack is gone, but the TUI's ui_file still
does not implement the ui_file::write method. Since tui_file inherits
from stdio_file, writing to a tui_file ends up doing fwrite on the
FILE stream the TUI is "associated" with, via stdio_file::write,
instead of writing to the ncurses window.
The fix is to have tui_file override the "write" method.
New test included.
gdb/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR tui/21216
* tui/tui-file.c (tui_file::write): New.
* tui/tui-file.h (tui_file): Override "write".
* tui/tui-io.c (do_tui_putc, update_start_line): New functions,
factored out from ...
(tui_puts): ... here.
(tui_putc): Use them.
(tui_write): New function.
* tui/tui-io.h (tui_write): Declare.
gdb/testsuite/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR tui/21216
* gdb.tui/tui-nl-filtered-output.exp: New file.
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Subject: [Bug tui/21216] [8.0 regression]: TUI line breaks regression
Date: Wed, 08 Mar 2017 00:20:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Fixed. Thanks for bisecting/reporting.
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>From gdb-prs-return-21091-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 08 07:47:50 2017
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
FreeBSD 11.0
Date: Wed, 08 Mar 2017 07:47:00 -0000
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--- Comment #6 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Chris Johns from comment #2)
>
> The build did fail on further on with:
>
> In file included from ../../binutils-gdb/gdb/dwarf2read.c:72:
> ../../binutils-gdb/gdb/common/gdb_unlinker.h:35:35: error: '__nonnull__'
> attribute is invalid for the implicit this argument
> unlinker (const char *filename) ATTRIBUTE_NONNULL (1)
> ^ ~
> ../../binutils-gdb/gdb/../include/ansidecl.h:169:48: note: expanded from
> macro 'ATTRIBUTE_NONNULL'
> # define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
>
Yes, I saw this fail in my Linux build too.
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>From gdb-prs-return-21092-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 08 09:34:38 2017
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From: "mishra.nitish.88 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
Date: Wed, 08 Mar 2017 09:34:00 -0000
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--- Comment #13 from Nitish K Mishra <mishra.nitish.88 at gmail dot com> ---
Hi,
I got a review comment from Bernhard Reutner-Fischer from gcc
community and have updated the patch accordingly.
Actually the first two changes in the earlier patch is not needed as
these changes are already there in the gdb-7.12.1 release.
But using "git diff" is still showing those changes. I am not sure why ?
Anyways, I have updated the patch accordingly.
Please find the attachment.
Thanks and Regards,
Nitish K Mishra
On Tue, Mar 7, 2017 at 5:50 PM, Nitish Kumar Mishra
<mishra.nitish.88@gmail.com> wrote:
> Hi,
>
> I have updated the patch as per your comment and sent it to
> gdb-patches@ and have uploaded the same to the PR 21187
> on bugzilla. I am attaching one copy here as well. Please find the attachment.
> One thing more, Yao Qi told me that configure.ac file is maintained by
> gcc community, So I should sent the patch to gcc-patches@
> and get approval from there. So, I am mailing one copy of the patch
> there as well.
> I am new to the community, so, don't have much exposure here. Anything
> else I need to do or follow-up ?
>
> Thanks and Regards,
> Nitish
>
> On Tue, Mar 7, 2017 at 2:24 PM, Nitish Kumar Mishra
> <mishra.nitish.88@gmail.com> wrote:
>> Hi,
>>
>> Sure, I will send the patch to gdb-patches mailing list after changing
>> the code as per your comment.
>> Thanks for the help.
>>
>> Thanks and Regards,
>> Nitish
>>
>>
>> On Sat, Mar 4, 2017 at 11:02 PM, brobecker at gnat dot com
>> <sourceware-bugzilla@sourceware.org> wrote:
>>> https://sourceware.org/bugzilla/show_bug.cgi?id=21187
>>>
>>> Joel Brobecker <brobecker at gnat dot com> changed:
>>>
>>> What |Removed |Added
>>> ----------------------------------------------------------------------------
>>> Status|UNCONFIRMED |NEW
>>> Last reconfirmed| |2017-03-04
>>> CC| |brobecker at gnat dot com
>>> Assignee|unassigned at sourceware dot org |mishra.nitish.88 at gmail dot com
>>> Ever confirmed|0 |1
>>>
>>> --- Comment #6 from Joel Brobecker <brobecker at gnat dot com> ---
>>> To get your patch reviewed, and hopefully included in the official sources, can
>>> you please send it to gdb-patches@, using the information outlined in the
>>> following page, please?
>>>
>>> https://sourceware.org/gdb/wiki/ContributionChecklist
>>>
>>> People don't necessarily follow the patches sent here. I think this is also
>>> mentioned in the ContributionChecklist above, but do ping us after a couple of
>>> weeks if we haven't answered, and every week thereafter.
>>>
>>> As a comment to your patch, the style you used for the AC_ARG_ENABLE is a bit
>>> different from the style we've been using so far. Not necessarily wrong, but
>>> there is value for us in trying to keep the style consistent. So could you have
>>> a look at the other uses of AC_ARG_ENABLE in gdb/configure.ac, and try to
>>> mimick that with your patch?
>>>
>>> Thank you.
>>>
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21218] Regression: GDB dumps core when escaping newline in
multi line command
Date: Wed, 08 Mar 2017 11:27:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
I have a local fix. Turns out that commit ended up exposing a "latent" bug.
The problem is that gdb_readline_wrapper ends up calling display_gdb_prompt
with a NULL prompt parameter, which has special meaning - it signals that we're
printing the primary prompt, when what we want is a secondary prompt.
While tightening the test, I noticed that the commit before the one that
exposed the crash also behaved incorrectly:
PASS: gdb.base/commands.exp: commands
print \
(gdb) argc
FAIL: gdb.base/commands.exp: input line split with backslash (timeout)
I.e., gdb wouldn't crash, but it'd print the gdb prompt when it shouldn't.
Going further back, to try to find the commit that introduced that problem, in
order to try to confirm what I think GDB should be printing after the \ (i.e.,
nothing, instead of a ">" or something else), I found that that problem was
originally introduced right when gdb_readline_wrapper was originally added:
commit 782a7b8ef9c096357073a9c177fb1e21b282cec0
Author: Daniel Jacobowitz <dan@debian.org>
AuthorDate: Wed Jan 3 21:46:12 2007 +0000
Commit: Daniel Jacobowitz <dan@debian.org>
CommitDate: Wed Jan 3 21:46:12 2007 +0000
2007-01-03 Jan Kratochvil <jan.kratochvil@redhat.com>
Daniel Jacobowitz <dan@codesourcery.com>
And with that commit, gdb started crashing in this use case:
(gdb) commands
Type commands for when breakpoint 1 is hit, one per line.
End with a line saying just "end".
>print \
Program received signal SIGSEGV, Segmentation fault.
strlen () at ../sysdeps/x86_64/strlen.S:106
106 movdqu (%rax), %xmm12
(top-gdb) bt
#0 0x00007ffff6f256fa in strlen () at ../sysdeps/x86_64/strlen.S:106
#1 0x00000000004d8cbb in display_gdb_prompt (new_prompt=0x0) at
src/gdb/event-top.c:298
#2 0x0000000000448ca7 in gdb_readline_wrapper (prompt=0x0) at
src/gdb/top.c:806
#3 0x0000000000449178 in command_line_input (prompt_arg=0x7fffffffd290 ">",
repeat=1, annotation_suffix=0x61295d "commands")
at src/gdb/top.c:1011
Kind of funny this issue survived so long unnoticed and with different
manifestations.
Just before that commit, GDB behaved like this:
(gdb) commands
Type commands for when breakpoint 1 is hit, one per line.
End with a line saying just "end".
>print \
1
>end
(gdb)
... which is what my (yet-unposted) patch will restore GDB back to.
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Subject: [Bug cli/21218] Regression: GDB dumps core when escaping newline in
multi line command
Date: Wed, 08 Mar 2017 12:28:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6e5d74e74756fafe59e8198c4cc462cf7c57e12c
commit 6e5d74e74756fafe59e8198c4cc462cf7c57e12c
Author: Pedro Alves <palves@redhat.com>
Date: Wed Mar 8 11:41:35 2017 +0000
Fix PR 21218: GDB dumps core when escaping newline in multi-line command
With commit 3b12939dfc2399 ("Replace the sync_execution global with a
new enum prompt_state tristate"), GDB started aborting if you try
splitting an input line with a continuation char (backslash) while in
a multi-line command:
(gdb) commands
Type commands for breakpoint(s) 1, one per line.
End with a line saying just "end".
>print \
(gdb) 1 # note "(gdb)" incorrectly printed here.
>end
readline: readline_callback_read_char() called with no handler!
$
That abort is actually a symptom of an old problem introduced when
gdb_readline_wrapper was rewritten to use asynchronous readline, back
in 2007. Note how the "(gdb)" prompt is printed above in the "(gdb)
1" line. Clearly it shouldn't be there, but it already was before the
commit mentioned above. Fixing that also fixes the readline abort
shown above.
The problem starts when command_line_input passes a NULL prompt to
gdb_readline_wrapper when it finds previous incomplete input due to a
backslash, trying to fetch more input without printing another ">"
secondary prompt. That itself should not be a problem, because
passing NULL to gdb_readline_wrapper has the same meaning as passing a
pointer to empty string, since gdb_readline_wrapper exposes the same
interface as 'readline(char *)'. However, gdb_readline_wrapper passes
the prompt argument directly to display_gdb_prompt, and for the
latter, a NULL prompt argument has a different meaning - it requests
printing the primary prompt.
Before commit 782a7b8ef9c096 (which rewrote gdb_readline_wrapper to
use asynchronous readline), GDB behaved like this:
(gdb) commands
[....]
>print \
1
>end
(gdb)
The above is what this commit restores GDB back to.
New test included.
gdb/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR cli/21218
* top.c (gdb_readline_wrapper): Avoid passing NULL to
display_gdb_prompt.
(command_line_input): Add comment.
gdb/testsuite/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
Jan Kratochvil <jan.kratochvil@redhat.com>
PR cli/21218
* gdb.base/commands.exp (backslash_in_multi_line_command_test):
New proc.
(top level): Call it.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21218] Regression: GDB dumps core when escaping newline in
multi line command
Date: Wed, 08 Mar 2017 12:29:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
Fixed.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21225] Which version of gdb should I use for best
reliability
Date: Wed, 08 Mar 2017 15:18:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
The first question is so open ended that it's impossible to answer in any
detail. For one, I have no idea what exactly you mean by "reliable". But
obviously the general answer should be "the latest version". GDB is constantly
improving.
For the rest of the questions, "yes to all".
> do the developers of gdb ever use gdb to debug gdb?
Of course.
> do the developers of gdb ever debug code that use C++
Yes. GDB is a C++11 program now [1], so we're dogfooding C++ nowadays. A few
problems became more evident, but none that we didn't know about already.
We have two major projects going on to improve C++ debugging. One is using G++
for C++ expression evaluation, via the "compile" command. The G++ side is
going to be in GCC 7, and the GDB side is being prepared for submission. The
other is improving the linespec parser and symbol search so that it becomes
possible to set breakpoints on functions with gdb ignoring namespaces. I can
point you at testing branches for all of this if you're interested in helping
out. The wiki has pointers to these and other ongoing projects.
> or DSOs?
Yes, of course. Specific suggestions on what should be improved are welcome.
> Do the developers ever look at examples that are larger than 10K?
Yes. We know of houses that have many users that load huge programs into GDB.
Some even employ GDB maintainers. We have tests in our testsuite to exercise
some use cases with representative "huge" programs. There's a lot of scope for
improvement, of course.
> (To answer a potential response question, yes I am getting a bit fed up. And
> if I am getting fed up, there are many more that have given up on gdb being a
> useful tool.)
I'm sorry to hear that.
[1] https://sourceware.org/gdb/wiki/cxx-conversion
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Subject: [Bug gdb/19712] AT_EXECFN and trimmed "Core was generated by"
Date: Wed, 08 Mar 2017 15:24:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Diffing two test directories I noticed:
-PASS: gdb.base/corefile.exp: args: -core=corefile.core
-PASS: gdb.base/corefile.exp: args: execfile -core=corefile.core
-PASS: gdb.base/corefile.exp: core-file command
+PASS: gdb.base/corefile.exp: args: -core=corefile.core (with bad program
name)
+PASS: gdb.base/corefile.exp: args: execfile -core=corefile.core (with bad
program name)
+PASS: gdb.base/corefile.exp: core-file command (with bad program name)
The reason for that was exactly a too-long filename:
-Core was generated by
`/home/pedro/brno/pedro/gdb/mygit/build/gdb/testsuite/outputs/gdb.base/corefile/'.
+[New LWP 21803]
+Core was generated by
`/home/pedro/brno/pedro/gdb/mygit/cxx-convertion/build-gcc-5.3.1-cxx11/gdb/tests'.
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
FreeBSD 11.0
Date: Wed, 08 Mar 2017 15:48:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
I've reported a GCC bug for the missing diagnostic:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79961
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Subject: [Bug corefiles/21206] gdb-7.12.1 for arm-rtems4.12 fails to build on
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=15c22686d0e33d87262bc9075296eeddd7d955f7
commit 15c22686d0e33d87262bc9075296eeddd7d955f7
Author: Pedro Alves <palves@redhat.com>
Date: Wed Mar 8 15:52:16 2017 +0000
gdb: Fix ATTRIBUTE_NONNULL usage
Should fix the build failure with Clang mentioned at
<https://sourceware.org/bugzilla/show_bug.cgi?id=21206#c2>:
In file included from ../../binutils-gdb/gdb/dwarf2read.c:72:
../../binutils-gdb/gdb/common/gdb_unlinker.h:35:35: error: '__nonnull__'
attribute is invalid for the implicit this argument
unlinker (const char *filename) ATTRIBUTE_NONNULL (1)
^ ~
../../binutils-gdb/gdb/../include/ansidecl.h:169:48: note: expanded from
macro 'ATTRIBUTE_NONNULL'
# define ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
gdb/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR 21206
* common/gdb_unlinker.h (unlinker::unlinker): Attribute nonnull
goes to argument 2, not 1.
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Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
big-endian targets
Date: Wed, 08 Mar 2017 18:29:00 -0000
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I posted a proposed fix:
https://sourceware.org/ml/gdb-patches/2017-03/msg00110.html
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Subject: [Bug gdb/18360] internal error when using "interrupt -a"
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c65d6b55b3a592906c470c566f57ad8ceacc1605
commit c65d6b55b3a592906c470c566f57ad8ceacc1605
Author: Pedro Alves <palves@redhat.com>
Date: Wed Mar 8 18:54:34 2017 +0000
Fix PR18360 - internal error when using "interrupt -a"
If you do "interrupt -a" just while some thread is stepping over a
breakpoint, gdb trips on an internal error.
The test added by this patch manages to trigger this consistently by
spawning a few threads that are constantly tripping on a conditional
breakpoint whose condition always evaluates to false. With current
gdb, you get:
~~~
interrupt -a
.../src/gdb/inline-frame.c:343: internal-error: void
skip_inline_frames(ptid_t): Assertion `find_inline_frame_state (ptid) == NULL'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL:
gdb.threads/interrupt-while-step-over.exp: displaced-stepping=on: iter=0:
interrupt -a (GDB internal error)
[...]
.../src/gdb/inline-frame.c:343: internal-error: void
skip_inline_frames(ptid_t): Assertion `find_inline_frame_state (ptid) == NULL'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL:
gdb.threads/interrupt-while-step-over.exp: displaced-stepping=off: iter=0: wait
for stops (GDB internal error)
~~~
The assertion triggers because we're processing a stop for a thread
that had already stopped before and thus had already its inline-frame
state filled in.
Calling handle_inferior_event_1 directly within a
"thread_stop_requested" observer is something that I've wanted to get
rid of before, for being fragile. Nowadays, infrun is aware of
threads with pending events, so we can use that instead, and let the
normal fetch_inferior_event -> handle_inferior_event code path handle
the forced stop.
The change to finish_step_over is necessary because sometimes a thread
that was told to PTRACE_SINGLESTEP reports back a SIGSTOP instead of a
SIGTRAP (i.e., we tell it to single-step, and then interrupt it quick
enough that on the kernel side the thread dequeues the SIGTOP before
ever having had a chance of executing the instruction to be stepped).
SIGSTOP gets translated to a GDB_SIGNAL_0. And then finish_step_over
would miss calling clear_step_over_info, and thus miss restarting the
other threads (which in this case of threads with pending events,
means setting their "resumed" flag, so their pending events can be
consumed).
And now that we always restart threads in finish_step_over, we no
longer need to do that in handle_signal_stop.
Tested on x86_64 Fedora 23, native and gdbserver.
gdb/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR gdb/18360
* infrun.c (start_step_over, do_target_resume, resume)
(restart_threads): Assert we're not resuming a thread that is
meant to be stopped.
(infrun_thread_stop_requested_callback): Delete.
(infrun_thread_stop_requested): If the thread is internally
stopped, queue a pending stop event and clear the thread's
inline-frame state.
(handle_stop_requested): New function.
(handle_syscall_event, handle_inferior_event_1): Use
handle_stop_requested.
(handle_stop_requested): New function.
(handle_signal_stop): Set the thread's stop_signal here instead of
at caller.
(finish_step_over): Clear step over info unconditionally.
(handle_signal_stop): If the user had interrupted the event
thread, consider the stop a random signal.
(handle_signal_stop) <signal arrived while stepping over
breakpoint>: Don't restart threads here.
(stop_waiting): Don't clear step-over info here.
gdb/testsuite/ChangeLog:
2017-03-08 Pedro Alves <palves@redhat.com>
PR gdb/18360
* gdb.threads/interrupt-while-step-over.c: New file.
* gdb.threads/interrupt-while-step-over.exp: New file.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18360] internal error when using "interrupt -a"
Date: Wed, 08 Mar 2017 19:56:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Fixed.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18360] internal error when using "interrupt -a"
Date: Wed, 08 Mar 2017 19:57:00 -0000
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--- Comment #4 from Simon Marchi <simon.marchi at ericsson dot com> ---
Thanks!
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/8218] ptype claims destructors have arg
Date: Wed, 08 Mar 2017 21:28:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
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Assignee|unassigned at sourceware dot org |keiths at redhat dot com
--- Comment #4 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Tom Tromey from comment #3)
> Arguably it is still a gdb bug since the parameter is marked artificial.
> I think that gdb may be making an explicit choice here, though, since
> c_type_print_args explicitly prints artificial arguments.
Yeah, this just bit me, too, while trying to write some tests using
cp_test_ptype_class. It kept failing on the dtor, "~foo(int)".
The problem here is that cp_type_print_method_args doesn't ignore artificial
arguments, except possibly the first one if the method isn't static. [That
seems equally dubious to me, too. Compilers don't *have* to implement methods
using artificial `this'. :-)]
In any case, I'm working up a patch. To see ~foo(int) in 2017 is just plain
disheartening!
I don't think this should harm Clang in any way, but if there is test suite
massaging needed, I don't think there would be a problem with that.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #11 from Pedro Alves <palves at redhat dot com> ---
We should really get that series in. Tentatively setting milestone to 8.0.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #12 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Pedro Alves from comment #11)
> We should really get that series in. Tentatively setting milestone to 8.0.
I'm working on it. Should arrive in the next day or two.
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Subject: [Bug c++/20399] casts.cc test case fails to compile
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--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
It was in the rvalue reference patch set, but Jan fixed this separately in
commit d41a5c096ec613f7df33d5d5ea4c0e512ac1e87a. AFAICT, this did not make
7.12.
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Subject: [Bug c++/18881] bogus 'Cannot resolve function foo to any overloaded
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--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
Is this still a problem? This appears to be working since 7.9:
$ ./gdb -ex 'b bar' -ex r -ex 'p FOO1(b)' -ex 'p FOO2(b)' \
-ex 'p foo((A)b)' -ex 'p foo((A)b) ? foo((A)b) : foo((A)b)' ~/tmp/18881
Breakpoint 1, bar (b=0x7fffffffd9bf) at 18881.cc:14
14 if (FOO2 (b))
$1 = (const U *) 0x7fffffffd9bf
$2 = (const U *) 0x7fffffffd9bf
$3 = (const U *) 0x7fffffffd9bf
$4 = (const U *) 0x7fffffffd9bf
(gdb) show version
GNU gdb (GDB) 7.9.1.20150702-cvs
[snip]
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>From gdb-prs-return-21110-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Mar 09 22:23:25 2017
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/16106] C++ expression parsing meta-bug
Date: Thu, 09 Mar 2017 22:23:00 -0000
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Bug 16106 depends on bug 15169, which changed state.
Bug 15169 Summary: unhandled overload resolution case
https://sourceware.org/bugzilla/show_bug.cgi?id=15169
What |Removed |Added
----------------------------------------------------------------------------
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Resolution|--- |FIXED
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/15169] unhandled overload resolution case
Date: Thu, 09 Mar 2017 22:23:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |keiths at redhat dot com
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--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
This appears to work since at least 7.9:
& gdb-7.9 ~/tmp/15169 -ex start -ex "p overload(1,f)"
Reading symbols from /home/keiths/tmp/15169...done.
Temporary breakpoint 1 at 0x400629: file 15169.cc, line 7.
Starting program: /home/keiths/tmp/15169
Temporary breakpoint 1, main () at 15169.cc:7
7 return overload(0, f);
$1 = 1
Please file a new bug if there are still unaddressed problems.
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/15372] ref qualifiers and overloading
Date: Thu, 09 Mar 2017 22:30:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
See Also| |http://sourceware.org/bugzi
| |lla/show_bug.cgi?id=14441
--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
Many years later, we have DWARF support for rvalue references and we even have
pending support for them in GDB (see c++/14441). However, that patch series
still has some problems with overload resolution.
I'm using this bug to track these problems. In our test suite, we (will) have:
FAIL: gdb.cp/rvalue-ref-overload.exp: lvalue reference overload
FAIL: gdb.cp/rvalue-ref-overload.exp: rvalue reference overload
FAIL: gdb.cp/rvalue-ref-params.exp: print value of f1 on Child&& in f2
These will be marked KFAIL and linked to this bug.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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What |Removed |Added
----------------------------------------------------------------------------
See Also| |https://sourceware.org/bugz
| |illa/show_bug.cgi?id=15372
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>From gdb-prs-return-21113-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 10 02:13:39 2017
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Subject: [Bug gdb/21239] New: gdb doesn't show any threads for some users
Date: Fri, 10 Mar 2017 02:13:00 -0000
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Bug ID: 21239
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'info thread' doesn't print anything under some users, and works find under
others.
gdb should at least report what the problem is when threads aren't available,
the output shouldn't be just blank.
Found on FreeBSD 11 amd64.
gdb-7.12.1
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Subject: [Bug c++/8218] ptype claims destructors have arg
Date: Fri, 10 Mar 2017 18:34:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5f4d10850850cd95af5e95a16848c8c07a273d88
commit 5f4d10850850cd95af5e95a16848c8c07a273d88
Author: Keith Seitz <keiths@redhat.com>
Date: Fri Mar 10 10:32:09 2017 -0800
c++/8218: Destructors w/arguments.
For a long time now, c++/8218 has noted that GDB is printing argument types
for destructors:
(gdb) ptype A
type = class A {
public:
~A(int);
}
This happens because cp_type_print_method_args doesn't ignore artificial
arguments. [It ignores the first `this' pointer because it simply skips
the first argument for any non-static function.]
This patch fixes this:
(gdb) ptype A
type = class A {
public:
~A();
}
I've adjusted gdb.cp/templates.exp to account for this and added a new
passing regexp.
gdb/ChangeLog
PR c++/8218
* c-typeprint.c (cp_type_print_method_args): Skip artificial arguments.
gdb/testsuite/ChangeLog
PR c++/8128
* gdb.cp/templates.exp (test_ptype_of_templates): Remove argument
type from destructor regexps.
Add a branch which actually passes the test.
Adjust "ptype t5i" test names.
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Subject: [Bug c++/8128] setting a breakpoint on C++ member functions
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5f4d10850850cd95af5e95a16848c8c07a273d88
commit 5f4d10850850cd95af5e95a16848c8c07a273d88
Author: Keith Seitz <keiths@redhat.com>
Date: Fri Mar 10 10:32:09 2017 -0800
c++/8218: Destructors w/arguments.
For a long time now, c++/8218 has noted that GDB is printing argument types
for destructors:
(gdb) ptype A
type = class A {
public:
~A(int);
}
This happens because cp_type_print_method_args doesn't ignore artificial
arguments. [It ignores the first `this' pointer because it simply skips
the first argument for any non-static function.]
This patch fixes this:
(gdb) ptype A
type = class A {
public:
~A();
}
I've adjusted gdb.cp/templates.exp to account for this and added a new
passing regexp.
gdb/ChangeLog
PR c++/8218
* c-typeprint.c (cp_type_print_method_args): Skip artificial arguments.
gdb/testsuite/ChangeLog
PR c++/8128
* gdb.cp/templates.exp (test_ptype_of_templates): Remove argument
type from destructor regexps.
Add a branch which actually passes the test.
Adjust "ptype t5i" test names.
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From: "tcurdt at vafer dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21240] New: arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 20:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21240
Bug ID: 21240
Summary: arm-none-eabi-gdb crashes on start
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: tcurdt at vafer dot org
Target Milestone: ---
When just running:
$ arm-none-eabi-gdb
GNU gdb (GNU Tools for ARM Embedded Processors) 7.12.0.20161204-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-apple-darwin10
--target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Abort trap: 6
I get a SIGABRT
Process: arm-none-eabi-gdb [19569]
Path:
/usr/local/Caskroom/gcc-arm-embedded/6.2,2016q4/gcc-arm-none-eabi-6_2-2016q4/bin/arm-none-eabi-gdb
Identifier: arm-none-eabi-gdb
Version: ???
Code Type: X86-64 (Native)
Parent Process: bash [16866]
Responsible: arm-none-eabi-gdb [19569]
User ID: 501
Date/Time: 2017-03-10 21:45:04.843 +0100
OS Version: Mac OS X 10.12.3 (16D32)
Report Version: 12
Anonymous UUID: C5809969-9982-626B-185C-C71743BF1FC0
Sleep/Wake UUID: CBDB9DCF-CE80-4E0E-A87E-1BFC300D5143
Time Awake Since Boot: 910000 seconds
Time Since Wake: 17000 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
abort() called
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff8bb4cdd6 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff8bc38787 pthread_kill + 90
2 libsystem_c.dylib 0x00007fff8bab2420 abort + 129
3 arm-none-eabi-gdb 0x000000010658b0a1 uw_init_context_1 +
88
4 arm-none-eabi-gdb 0x000000010658b498
_Unwind_RaiseException + 62
5 arm-none-eabi-gdb 0x0000000106589868 __cxa_throw + 90
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007fff599a4a48
rdx: 0x0000000000000000
rdi: 0x0000000000000307 rsi: 0x0000000000000006 rbp: 0x00007fff599a4a70
rsp: 0x00007fff599a4a48
r8: 0x0000000000000040 r9: 0x00007f951a600240 r10: 0x0000000008000000
r11: 0x0000000000000206
r12: 0x0000000106589868 r13: 0x00007fff599a5020 r14: 0x00007fff9486b3c0
r15: 0x000000010659f9b0
rip: 0x00007fff8bb4cdd6 rfl: 0x0000000000000206 cr2: 0x00007fff8bc3648b
Logical CPU: 0
Error Code: 0x02000148
Trap Number: 133
Binary Images:
0x10625a000 - 0x106768fef +arm-none-eabi-gdb (???)
<6A807F40-BB0B-35D2-AFC2-6AE3BAF605BC> /usr/local/bin/arm-none-eabi-gdb
0x10742f000 - 0x10746c267 dyld (421.2)
<947FC440-80F9-32F7-A773-6FC418FE1AB7> /usr/lib/dyld
0x7fff8a47b000 - 0x7fff8a47cff3 libSystem.B.dylib (1238)
<9CB018AF-54E9-300F-82BE-81FE553C9154> /usr/lib/libSystem.B.dylib
0x7fff8a594000 - 0x7fff8a594ff3 libauto.dylib (187)
<5BBF6A00-CC76-389D-84E7-CA88EDADE683> /usr/lib/libauto.dylib
0x7fff8a5b5000 - 0x7fff8a60bff7 libc++.1.dylib (307.4)
<BEE86868-F831-384C-919E-2B286ACFE87C> /usr/lib/libc++.1.dylib
0x7fff8a60c000 - 0x7fff8a636fff libc++abi.dylib (307.2)
<1CEF8ABB-7E6D-3C2F-8E0A-E7884478DD23> /usr/lib/libc++abi.dylib
0x7fff8b07a000 - 0x7fff8b0abffb libncurses.5.4.dylib (51.30.1)
<A8C8F837-86A2-3EC2-B2D2-6E8A267847E4> /usr/lib/libncurses.5.4.dylib
0x7fff8b126000 - 0x7fff8b4f6d97 libobjc.A.dylib (706)
<F9AFE665-A3A2-3285-9495-19803A565861> /usr/lib/libobjc.A.dylib
0x7fff8b940000 - 0x7fff8b944ff7 libcache.dylib (79)
<0C8092D3-600F-3ADD-A036-F225B6CDCA43> /usr/lib/system/libcache.dylib
0x7fff8b945000 - 0x7fff8b950ff7 libcommonCrypto.dylib (60092.30.2)
<B16E29B6-EC8D-3A8F-9A89-DD9CF35F7C4B> /usr/lib/system/libcommonCrypto.dylib
0x7fff8b951000 - 0x7fff8b958fff libcompiler_rt.dylib (62)
<E992E8D9-037C-3454-A366-A25E4D31D6BB> /usr/lib/system/libcompiler_rt.dylib
0x7fff8b959000 - 0x7fff8b961fff libcopyfile.dylib (138)
<64E285D9-5485-333B-AEE7-8B0C8FB9275F> /usr/lib/system/libcopyfile.dylib
0x7fff8b962000 - 0x7fff8b9e5fdf libcorecrypto.dylib (442.30.20)
<2074B932-FD79-30A9-8E90-AF25C49F2AF1> /usr/lib/system/libcorecrypto.dylib
0x7fff8b9e6000 - 0x7fff8ba18fff libdispatch.dylib (703.30.5)
<EA0CC14E-D559-3802-B4B2-0E8C7579AAC4> /usr/lib/system/libdispatch.dylib
0x7fff8ba19000 - 0x7fff8ba1eff3 libdyld.dylib (421.2)
<6F506653-FFF6-3DB8-84F1-109AE3C52F32> /usr/lib/system/libdyld.dylib
0x7fff8ba1f000 - 0x7fff8ba1fffb libkeymgr.dylib (28)
<1A318923-1200-3B06-B432-5007D82F195D> /usr/lib/system/libkeymgr.dylib
0x7fff8ba2d000 - 0x7fff8ba2dfff liblaunch.dylib (972.30.7)
<15FACC21-079A-3BDF-9AFB-4253EFDEB587> /usr/lib/system/liblaunch.dylib
0x7fff8ba2e000 - 0x7fff8ba33fff libmacho.dylib (894)
<A2F38EC1-C37C-3B93-B0E4-36B07C177F8C> /usr/lib/system/libmacho.dylib
0x7fff8ba34000 - 0x7fff8ba36ff3 libquarantine.dylib (85)
<C1D7749F-5F5F-3BB9-BEFC-1F0B9DA941FD> /usr/lib/system/libquarantine.dylib
0x7fff8ba37000 - 0x7fff8ba38ffb libremovefile.dylib (45)
<CD42974E-BE0B-39FC-9BFC-8A7540A04DC6> /usr/lib/system/libremovefile.dylib
0x7fff8ba39000 - 0x7fff8ba51ff7 libsystem_asl.dylib (349.30.2)
<EFAC72D7-CB13-3DF7-ADF3-EC6635C6F1EA> /usr/lib/system/libsystem_asl.dylib
0x7fff8ba52000 - 0x7fff8ba52ff7 libsystem_blocks.dylib (67)
<B8C3701D-5A91-3D35-999D-2DC8D5393525> /usr/lib/system/libsystem_blocks.dylib
0x7fff8ba53000 - 0x7fff8bae0fef libsystem_c.dylib (1158.30.7)
<2F881962-03CB-3B9D-A782-D98C1BBA4E3D> /usr/lib/system/libsystem_c.dylib
0x7fff8bae1000 - 0x7fff8bae4ffb libsystem_configuration.dylib
(888.30.2) <4FE3983C-E4ED-3939-A578-03AD29C99788>
/usr/lib/system/libsystem_configuration.dylib
0x7fff8bae5000 - 0x7fff8bae8fff libsystem_coreservices.dylib
(41.4) <1A572B9E-0C47-320F-8C64-7990D0A5FB5A>
/usr/lib/system/libsystem_coreservices.dylib
0x7fff8bae9000 - 0x7fff8bb01ff3 libsystem_coretls.dylib (121.31.1)
<4676F06D-274D-31BE-B61C-4D7A4AEF4858> /usr/lib/system/libsystem_coretls.dylib
0x7fff8bb02000 - 0x7fff8bb08fff libsystem_dnssd.dylib (765.30.11)
<DC708D84-ED7D-3936-B996-A67C66B8DDAA> /usr/lib/system/libsystem_dnssd.dylib
0x7fff8bb09000 - 0x7fff8bb32ff7 libsystem_info.dylib (503.30.1)
<9ED9121C-F111-3FAD-BC2F-C95DEE1C9362> /usr/lib/system/libsystem_info.dylib
0x7fff8bb33000 - 0x7fff8bb55ff7 libsystem_kernel.dylib (3789.41.3)
<B75B128C-7D7A-3318-91CD-82B5A69C5329> /usr/lib/system/libsystem_kernel.dylib
0x7fff8bb56000 - 0x7fff8bb9dfe7 libsystem_m.dylib (3121.4)
<266DB92B-A86F-3691-80FB-1B26AD73CFF3> /usr/lib/system/libsystem_m.dylib
0x7fff8bb9e000 - 0x7fff8bbbcff7 libsystem_malloc.dylib (116.30.3)
<F40DEE3B-386A-3529-A3F7-98117ED55BF4> /usr/lib/system/libsystem_malloc.dylib
0x7fff8bbbd000 - 0x7fff8bc14ffb libsystem_network.dylib
(856.30.16) <4AE368E9-605D-379D-B04C-2AC7455B8250>
/usr/lib/system/libsystem_network.dylib
0x7fff8bc15000 - 0x7fff8bc1eff3 libsystem_networkextension.dylib
(563.30.15) <EB020B0C-7DF0-3EEF-8E3C-15DA3C01D687>
/usr/lib/system/libsystem_networkextension.dylib
0x7fff8bc1f000 - 0x7fff8bc28ff3 libsystem_notify.dylib (165.20.1)
<E7FD3A7C-DD07-36E2-9FA4-7561F9F114DA> /usr/lib/system/libsystem_notify.dylib
0x7fff8bc29000 - 0x7fff8bc31fe7 libsystem_platform.dylib (126.1.2)
<3CA06D4E-C00A-36DE-AA65-3A390097D1F6> /usr/lib/system/libsystem_platform.dylib
0x7fff8bc32000 - 0x7fff8bc3cff7 libsystem_pthread.dylib (218.30.1)
<C869ED7C-BE29-3532-8E69-3A8DA1447EDC> /usr/lib/system/libsystem_pthread.dylib
0x7fff8bc3d000 - 0x7fff8bc40ff7 libsystem_sandbox.dylib (592.31.1)
<7BBFDF96-293F-3DD9-B3A4-7C168280B441> /usr/lib/system/libsystem_sandbox.dylib
0x7fff8bc41000 - 0x7fff8bc42fff libsystem_secinit.dylib (24)
<5C1F1E47-0F7D-3E25-8DEB-D9DB1F902281> /usr/lib/system/libsystem_secinit.dylib
0x7fff8bc43000 - 0x7fff8bc4afff libsystem_symptoms.dylib
(532.30.6) <5D990CF5-B58F-39F7-B375-99B4EC62CFBD>
/usr/lib/system/libsystem_symptoms.dylib
0x7fff8bc4b000 - 0x7fff8bc6bff7 libsystem_trace.dylib (518.30.7)
<6D34D1EA-2A3C-3D2D-803E-A666E6AEEE52> /usr/lib/system/libsystem_trace.dylib
0x7fff8bc6c000 - 0x7fff8bc71ffb libunwind.dylib (35.3)
<9F7C2AD8-A9A7-3DE4-828D-B0F0F166AAA0> /usr/lib/system/libunwind.dylib
0x7fff8bc72000 - 0x7fff8bc9bff7 libxpc.dylib (972.30.7)
<65E41BB6-EBD5-3D93-B0BE-B190CEE4DD93> /usr/lib/system/libxpc.dylib
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 553418
thread_create: 0
thread_set_state: 3395
VM Region Summary:
ReadOnly portion of Libraries: Total=127.0M resident=0K(0%)
swapped_out_or_unallocated=127.0M(100%)
Writable regions: Total=40.6M written=0K(0%) resident=0K(0%)
swapped_out=0K(0%) unallocated=40.6M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Kernel Alloc Once 8K 2
MALLOC 28.2M 9
MALLOC guard page 16K 4
MALLOC_LARGE (reserved) 128K 2 reserved VM
address space (unallocated)
SBRK (reserved) 4096K 2 reserved VM
address space (unallocated)
STACK GUARD 56.0M 2
Stack 8192K 2
VM_ALLOCATE 4K 2
__DATA 1840K 45
__LINKEDIT 113.8M 4
__TEXT 13.1M 43
shared memory 8K 3
=========== ======= =======
TOTAL 225.1M 108
TOTAL, minus reserved VM space 221.0M 108
Model: MacBookAir6,2, BootROM MBA61.0099.B26, 2 processors, Intel Core i7,
1.7 GHz, 8 GB, SMC 2.13f15
Graphics: Intel HD Graphics 5000, Intel HD Graphics 5000, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD,
0x483943434E4E4E384A544D4C41522D4E544D
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD,
0x483943434E4E4E384A544D4C41522D4E544D
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x117),
Broadcom BCM43xx 1.0 (7.21.171.68.1a5)
Bluetooth: Version 5.0.3f1, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SD0256F, 251 GB
USB Device: USB 3.0 Bus
USB Device: Card Reader
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: STM32 STLink
Thunderbolt Bus: MacBook Air, Apple Inc., 23.6
The exact version I am talking about is:
$ arm-none-eabi-gdb --version
GNU gdb (GNU Tools for ARM Embedded Processors) 7.12.0.20161204-git
With the following configuration:
$ arm-none-eabi-gdb --configuration
This GDB was configured as follows:
configure --host=x86_64-apple-darwin10 --target=arm-none-eabi
--with-auto-load-dir=:${prefix}/share/auto-load
--with-auto-load-safe-path=:${prefix}/share/auto-load
--with-expat
--with-gdb-datadir=/tmp/jenkins-GCC-6-build_build-toolchain-mac-93_20161216_1481890191/install-native/arm-none-eabi/share/gdb
(relocatable)
--with-jit-reader-dir=/tmp/jenkins-GCC-6-build_build-toolchain-mac-93_20161216_1481890191/install-native/lib/gdb
(relocatable)
--without-libunwind-ia64
--without-lzma
--without-guile
--with-separate-debug-dir=/tmp/jenkins-GCC-6-build_build-toolchain-mac-93_20161216_1481890191/install-native/lib/debug
(relocatable)
--with-system-gdbinit=/tmp/jenkins-GCC-6-build_build-toolchain-mac-93_20161216_1481890191/install-native/x86_64-apple-darwin10/arm-none-eabi/lib/gdbinit
(relocatable)
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
It might be me doing something wrong after all - but this should never happen.
Any thoughts?
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Fri, 10 Mar 2017 20:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21222
--- Comment #7 from Keith Seitz <keiths at redhat dot com> ---
As you note, this is likely a display problem.
So the next question is, what does "info addr lambda" say? I wonder if the
debug info is incorrect.
On my system (which does not support VEX):
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) p lambda
$1 = 0.031557098
(gdb) info addr lambda
Symbol "lambda" is a complex DWARF expression:
0: DW_OP_fbreg -20
.
(gdb) inf frame
Stack level 0, frame at 0x7fffffffd990:
rip = 0x400679 in testFunc (21222.cc:13); saved rip = 0x4006dd
called by frame at 0x7fffffffd9d0
source language c++.
Arglist at 0x7fffffffd980, args: a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0,
b=4, f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0
Locals at 0x7fffffffd980, Previous frame's sp is 0x7fffffffd990
Saved registers:
rbp at 0x7fffffffd980, rip at 0x7fffffffd988
(gdb) p *(float*)(0x7fffffffd990-20)
$2 = 0.031557098
What compiler/version are you using?
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From: "tcurdt at vafer dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 21:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21240
--- Comment #1 from tcurdt at vafer dot org ---
Turns out I still had some old gdb configuration in my gdbinit
fb -[NSException raise]
fb -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:]
fb -[NSAssertionHandler
handleFailureInMethod:object:file:lineNumber:description:]
fb NSKVODeallocateBreak
fb objc_exception_throw
fb malloc_printf
fb szone_error
fb malloc_error_break
fb CGPostError
fb _objc_error
fb objc_exception_during_finalize_error
fb auto_zone_resurrection_error
fb auto_refcount_underflow_error
fb -[_NSZombie init]
fb -[_NSZombie retainCount]
fb -[_NSZombie retain]
fb -[_NSZombie release]
fb -[_NSZombie autorelease]
fb -[_NSZombie methodSignatureForSelector:]
fb -[_NSZombie respondsToSelector:]
fb -[_NSZombie forwardInvocation:]
fb -[_NSZombie class]
fb -[_NSZombie dealloc]
# set env NSZombieEnabled YES
# set env NSDeallocateZombies NO
# set env MallocCheckHeapEach 10000
# set env MallocCheckHeapStart 10000
# set env MallocScribble 1
# set env MallocGuardEdges 1
# set env MallocCheckHeapAbort 1
# set env MallocStackLogging 1
# set env MallocStackLoggingNoCompact 1
set env CFZombie 5
Once I commented that out/removed it, it started without problems.
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 21:01:00 -0000
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tcurdt at vafer dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 21:07:00 -0000
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--- Comment #2 from tcurdt at vafer dot org ---
Unfortunately calling
$ arm-none-eabi-gdb --tui --eval-command="target remote localhost:4242"
main.elf
crash as soon as I hit return to continue
┌──stm32l/src/gpio.c────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│2 * stm32_gpio.c
│
│3 *
│
│4 * Created on: 13-06-2012
│
│5 * Author: Tomek
│
│6 */
│
│7
│
│8 #include <stm32l/stm32l.h>
│
│9 #include <stm32l/rcc.h>
│
│10 #include <stm32l/gpio.h>
│
│11
│
│12
│
│13 /* initialize pins */
│
│14 void GPIO_Init(gpio_t *GPIOx, gpio_init_t *init)
│
>│15 {
│
│16 int i;
│
│17 /* for every pin */
│
│18 for (i = 0; i < 16 && init->pins; i++) {
│
│19 /* bit position */
│
│20 if (init->pins & (1 << i)) {
│
│21 /* clear mode */
│
│22 GPIOx->MODER &= ~(0x3 << (i * 2));
│
│23 GPIOx->MODER |= init->mode << (i * 2);
│
│24 /* speed and output mode configuration
*/
│
│25 if ((init->mode == GPIO_OUTPUT) ||
(init->mode == GPIO_ALT)) {
│
│26 /* Speed mode configuration */
│
│27 GPIOx->OSPEEDR &= ~(0x3 << (i *
2));
│
│28 GPIOx->OSPEEDR |= init->speed <<
(i * 2);
│
│29 /* Output mode configuration */
│
Abort trap:
6──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
shodan:led tcurdt$ > In: GPIO_Init
L15 PC:
0x8000144
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-apple-darwin10
--target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from main.elf...done.
---Type <return> to continue, or q <return> to quit---
Process: arm-none-eabi-gdb [20104]
Path:
/usr/local/Caskroom/gcc-arm-embedded/6.2,2016q4/gcc-arm-none-eabi-6_2-2016q4/bin/arm-none-eabi-gdb
Identifier: arm-none-eabi-gdb
Version: ???
Code Type: X86-64 (Native)
Parent Process: bash [16866]
Responsible: arm-none-eabi-gdb [20104]
User ID: 501
Date/Time: 2017-03-10 22:03:51.535 +0100
OS Version: Mac OS X 10.12.3 (16D32)
Report Version: 12
Anonymous UUID: C5809969-9982-626B-185C-C71743BF1FC0
Sleep/Wake UUID: CBDB9DCF-CE80-4E0E-A87E-1BFC300D5143
Time Awake Since Boot: 910000 seconds
Time Since Wake: 18000 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
abort() called
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff8bb4cdd6 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff8bc38787 pthread_kill + 90
2 libsystem_c.dylib 0x00007fff8bab2420 abort + 129
3 arm-none-eabi-gdb 0x0000000106f6f0a1 uw_init_context_1 +
88
4 arm-none-eabi-gdb 0x0000000106f6f498
_Unwind_RaiseException + 62
5 arm-none-eabi-gdb 0x0000000106f6d868 __cxa_throw + 90
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007fff58fc0028
rdx: 0x0000000000000000
rdi: 0x0000000000000307 rsi: 0x0000000000000006 rbp: 0x00007fff58fc0050
rsp: 0x00007fff58fc0028
r8: 0x0000000000000040 r9: 0x00007ff3995371c0 r10: 0x0000000008000000
r11: 0x0000000000000206
r12: 0x0000000106f6d868 r13: 0x00007fff58fc0600 r14: 0x00007fff9486b3c0
r15: 0x00007ff3998be210
rip: 0x00007fff8bb4cdd6 rfl: 0x0000000000000206 cr2: 0x00007fff8bc3648b
Logical CPU: 0
Error Code: 0x02000148
Trap Number: 133
Binary Images:
0x106c3e000 - 0x10714cfef +arm-none-eabi-gdb (???)
<6A807F40-BB0B-35D2-AFC2-6AE3BAF605BC> /usr/local/bin/arm-none-eabi-gdb
0x117371000 - 0x1173ae267 dyld (421.2)
<947FC440-80F9-32F7-A773-6FC418FE1AB7> /usr/lib/dyld
0x7fff8a47b000 - 0x7fff8a47cff3 libSystem.B.dylib (1238)
<9CB018AF-54E9-300F-82BE-81FE553C9154> /usr/lib/libSystem.B.dylib
0x7fff8a594000 - 0x7fff8a594ff3 libauto.dylib (187)
<5BBF6A00-CC76-389D-84E7-CA88EDADE683> /usr/lib/libauto.dylib
0x7fff8a5b5000 - 0x7fff8a60bff7 libc++.1.dylib (307.4)
<BEE86868-F831-384C-919E-2B286ACFE87C> /usr/lib/libc++.1.dylib
0x7fff8a60c000 - 0x7fff8a636fff libc++abi.dylib (307.2)
<1CEF8ABB-7E6D-3C2F-8E0A-E7884478DD23> /usr/lib/libc++abi.dylib
0x7fff8b07a000 - 0x7fff8b0abffb libncurses.5.4.dylib (51.30.1)
<A8C8F837-86A2-3EC2-B2D2-6E8A267847E4> /usr/lib/libncurses.5.4.dylib
0x7fff8b126000 - 0x7fff8b4f6d97 libobjc.A.dylib (706)
<F9AFE665-A3A2-3285-9495-19803A565861> /usr/lib/libobjc.A.dylib
0x7fff8b940000 - 0x7fff8b944ff7 libcache.dylib (79)
<0C8092D3-600F-3ADD-A036-F225B6CDCA43> /usr/lib/system/libcache.dylib
0x7fff8b945000 - 0x7fff8b950ff7 libcommonCrypto.dylib (60092.30.2)
<B16E29B6-EC8D-3A8F-9A89-DD9CF35F7C4B> /usr/lib/system/libcommonCrypto.dylib
0x7fff8b951000 - 0x7fff8b958fff libcompiler_rt.dylib (62)
<E992E8D9-037C-3454-A366-A25E4D31D6BB> /usr/lib/system/libcompiler_rt.dylib
0x7fff8b959000 - 0x7fff8b961fff libcopyfile.dylib (138)
<64E285D9-5485-333B-AEE7-8B0C8FB9275F> /usr/lib/system/libcopyfile.dylib
0x7fff8b962000 - 0x7fff8b9e5fdf libcorecrypto.dylib (442.30.20)
<2074B932-FD79-30A9-8E90-AF25C49F2AF1> /usr/lib/system/libcorecrypto.dylib
0x7fff8b9e6000 - 0x7fff8ba18fff libdispatch.dylib (703.30.5)
<EA0CC14E-D559-3802-B4B2-0E8C7579AAC4> /usr/lib/system/libdispatch.dylib
0x7fff8ba19000 - 0x7fff8ba1eff3 libdyld.dylib (421.2)
<6F506653-FFF6-3DB8-84F1-109AE3C52F32> /usr/lib/system/libdyld.dylib
0x7fff8ba1f000 - 0x7fff8ba1fffb libkeymgr.dylib (28)
<1A318923-1200-3B06-B432-5007D82F195D> /usr/lib/system/libkeymgr.dylib
0x7fff8ba2d000 - 0x7fff8ba2dfff liblaunch.dylib (972.30.7)
<15FACC21-079A-3BDF-9AFB-4253EFDEB587> /usr/lib/system/liblaunch.dylib
0x7fff8ba2e000 - 0x7fff8ba33fff libmacho.dylib (894)
<A2F38EC1-C37C-3B93-B0E4-36B07C177F8C> /usr/lib/system/libmacho.dylib
0x7fff8ba34000 - 0x7fff8ba36ff3 libquarantine.dylib (85)
<C1D7749F-5F5F-3BB9-BEFC-1F0B9DA941FD> /usr/lib/system/libquarantine.dylib
0x7fff8ba37000 - 0x7fff8ba38ffb libremovefile.dylib (45)
<CD42974E-BE0B-39FC-9BFC-8A7540A04DC6> /usr/lib/system/libremovefile.dylib
0x7fff8ba39000 - 0x7fff8ba51ff7 libsystem_asl.dylib (349.30.2)
<EFAC72D7-CB13-3DF7-ADF3-EC6635C6F1EA> /usr/lib/system/libsystem_asl.dylib
0x7fff8ba52000 - 0x7fff8ba52ff7 libsystem_blocks.dylib (67)
<B8C3701D-5A91-3D35-999D-2DC8D5393525> /usr/lib/system/libsystem_blocks.dylib
0x7fff8ba53000 - 0x7fff8bae0fef libsystem_c.dylib (1158.30.7)
<2F881962-03CB-3B9D-A782-D98C1BBA4E3D> /usr/lib/system/libsystem_c.dylib
0x7fff8bae1000 - 0x7fff8bae4ffb libsystem_configuration.dylib
(888.30.2) <4FE3983C-E4ED-3939-A578-03AD29C99788>
/usr/lib/system/libsystem_configuration.dylib
0x7fff8bae5000 - 0x7fff8bae8fff libsystem_coreservices.dylib (41.4)
<1A572B9E-0C47-320F-8C64-7990D0A5FB5A>
/usr/lib/system/libsystem_coreservices.dylib
0x7fff8bae9000 - 0x7fff8bb01ff3 libsystem_coretls.dylib (121.31.1)
<4676F06D-274D-31BE-B61C-4D7A4AEF4858> /usr/lib/system/libsystem_coretls.dylib
0x7fff8bb02000 - 0x7fff8bb08fff libsystem_dnssd.dylib (765.30.11)
<DC708D84-ED7D-3936-B996-A67C66B8DDAA> /usr/lib/system/libsystem_dnssd.dylib
0x7fff8bb09000 - 0x7fff8bb32ff7 libsystem_info.dylib (503.30.1)
<9ED9121C-F111-3FAD-BC2F-C95DEE1C9362> /usr/lib/system/libsystem_info.dylib
0x7fff8bb33000 - 0x7fff8bb55ff7 libsystem_kernel.dylib (3789.41.3)
<B75B128C-7D7A-3318-91CD-82B5A69C5329> /usr/lib/system/libsystem_kernel.dylib
0x7fff8bb56000 - 0x7fff8bb9dfe7 libsystem_m.dylib (3121.4)
<266DB92B-A86F-3691-80FB-1B26AD73CFF3> /usr/lib/system/libsystem_m.dylib
0x7fff8bb9e000 - 0x7fff8bbbcff7 libsystem_malloc.dylib (116.30.3)
<F40DEE3B-386A-3529-A3F7-98117ED55BF4> /usr/lib/system/libsystem_malloc.dylib
0x7fff8bbbd000 - 0x7fff8bc14ffb libsystem_network.dylib (856.30.16)
<4AE368E9-605D-379D-B04C-2AC7455B8250> /usr/lib/system/libsystem_network.dylib
0x7fff8bc15000 - 0x7fff8bc1eff3 libsystem_networkextension.dylib
(563.30.15) <EB020B0C-7DF0-3EEF-8E3C-15DA3C01D687>
/usr/lib/system/libsystem_networkextension.dylib
0x7fff8bc1f000 - 0x7fff8bc28ff3 libsystem_notify.dylib (165.20.1)
<E7FD3A7C-DD07-36E2-9FA4-7561F9F114DA> /usr/lib/system/libsystem_notify.dylib
0x7fff8bc29000 - 0x7fff8bc31fe7 libsystem_platform.dylib (126.1.2)
<3CA06D4E-C00A-36DE-AA65-3A390097D1F6> /usr/lib/system/libsystem_platform.dylib
0x7fff8bc32000 - 0x7fff8bc3cff7 libsystem_pthread.dylib (218.30.1)
<C869ED7C-BE29-3532-8E69-3A8DA1447EDC> /usr/lib/system/libsystem_pthread.dylib
0x7fff8bc3d000 - 0x7fff8bc40ff7 libsystem_sandbox.dylib (592.31.1)
<7BBFDF96-293F-3DD9-B3A4-7C168280B441> /usr/lib/system/libsystem_sandbox.dylib
0x7fff8bc41000 - 0x7fff8bc42fff libsystem_secinit.dylib (24)
<5C1F1E47-0F7D-3E25-8DEB-D9DB1F902281> /usr/lib/system/libsystem_secinit.dylib
0x7fff8bc43000 - 0x7fff8bc4afff libsystem_symptoms.dylib (532.30.6)
<5D990CF5-B58F-39F7-B375-99B4EC62CFBD> /usr/lib/system/libsystem_symptoms.dylib
0x7fff8bc4b000 - 0x7fff8bc6bff7 libsystem_trace.dylib (518.30.7)
<6D34D1EA-2A3C-3D2D-803E-A666E6AEEE52> /usr/lib/system/libsystem_trace.dylib
0x7fff8bc6c000 - 0x7fff8bc71ffb libunwind.dylib (35.3)
<9F7C2AD8-A9A7-3DE4-828D-B0F0F166AAA0> /usr/lib/system/libunwind.dylib
0x7fff8bc72000 - 0x7fff8bc9bff7 libxpc.dylib (972.30.7)
<65E41BB6-EBD5-3D93-B0BE-B190CEE4DD93> /usr/lib/system/libxpc.dylib
External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 554073
thread_create: 0
thread_set_state: 3395
VM Region Summary:
ReadOnly portion of Libraries: Total=127.0M resident=0K(0%)
swapped_out_or_unallocated=127.0M(100%)
Writable regions: Total=48.6M written=0K(0%) resident=0K(0%)
swapped_out=0K(0%) unallocated=48.6M(100%)
VIRTUAL REGION
REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Kernel Alloc Once 8K 2
MALLOC 36.2M 9
MALLOC guard page 16K 4
MALLOC_LARGE (reserved) 128K 2 reserved VM address
space (unallocated)
SBRK (reserved) 4096K 2 reserved VM address
space (unallocated)
STACK GUARD 56.0M 2
Stack 8192K 2
VM_ALLOCATE 4K 2
__DATA 1840K 45
__LINKEDIT 113.8M 4
__TEXT 13.1M 43
shared memory 12K 4
=========== ======= =======
TOTAL 233.1M 109
TOTAL, minus reserved VM space 229.0M 109
Model: MacBookAir6,2, BootROM MBA61.0099.B26, 2 processors, Intel Core i7,
1.7 GHz, 8 GB, SMC 2.13f15
Graphics: Intel HD Graphics 5000, Intel HD Graphics 5000, Built-In
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD,
0x483943434E4E4E384A544D4C41522D4E544D
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD,
0x483943434E4E4E384A544D4C41522D4E544D
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x117),
Broadcom BCM43xx 1.0 (7.21.171.68.1a5)
Bluetooth: Version 5.0.3f1, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
Serial ATA Device: APPLE SSD SD0256F, 251 GB
USB Device: USB 3.0 Bus
USB Device: Card Reader
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: STM32 STLink
Thunderbolt Bus: MacBook Air, Apple Inc., 23.6
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From: "tcurdt at vafer dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 21:10:00 -0000
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--- Comment #3 from tcurdt at vafer dot org ---
Another try - also crashes:
$ arm-none-eabi-gdb main.elf
GNU gdb (GNU Tools for ARM Embedded Processors) 7.12.0.20161204-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-apple-darwin10
--target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from main.elf...done.
(gdb) tar ext :4242
Remote debugging using :4242
GPIO_Init (Abort trap: 6
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>From gdb-prs-return-21122-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 10 21:12:46 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 10 Mar 2017 21:12:00 -0000
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--- Comment #4 from tcurdt at vafer dot org ---
Seems like just loading the elf is a problem:
$ arm-none-eabi-gdb
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(gdb) load main.elf
Abort trap: 6
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>From gdb-prs-return-21123-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 10 21:28:14 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with a particular number of arguments
corrupts a value calculated on the stack when stepping through the function
Date: Fri, 10 Mar 2017 21:28:00 -0000
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--- Comment #8 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Keith Seitz from comment #7)
> As you note, this is likely a display problem.
>
> So the next question is, what does "info addr lambda" say? I wonder if the
> debug info is incorrect.
>
> On my system (which does not support VEX):
>
> 12 float lambda = C_LIGHT / f;
> (gdb) n
> 13 printf("lambda = %f\n", lambda);
> (gdb) p lambda
> $1 = 0.031557098
> (gdb) info addr lambda
> Symbol "lambda" is a complex DWARF expression:
> 0: DW_OP_fbreg -20
> .
> (gdb) inf frame
> Stack level 0, frame at 0x7fffffffd990:
> rip = 0x400679 in testFunc (21222.cc:13); saved rip = 0x4006dd
> called by frame at 0x7fffffffd9d0
> source language c++.
> Arglist at 0x7fffffffd980, args: a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0,
> b=4, f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0
> Locals at 0x7fffffffd980, Previous frame's sp is 0x7fffffffd990
> Saved registers:
> rbp at 0x7fffffffd980, rip at 0x7fffffffd988
> (gdb) p *(float*)(0x7fffffffd990-20)
> $2 = 0.031557098
>
> What compiler/version are you using?
I'm using g++ 6.3.1. I believe this is more than a display issue, as if I
attach the debugger here when the binary performs the printf I see the
corrupted value. There's definitely something going on with GDB & VEX
instructions (this doesn't happen if using the legacy SSE ones).
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0) at testfunc.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) info addr lambda
Symbol "lambda" is a complex DWARF expression:
0: DW_OP_fbreg -20
.
(gdb) inf frame
Stack level 0, frame at 0x7fffffffde80:
rip = 0x400562 in testFunc (testfunc.cpp:13); saved rip = 0x4005c6
called by frame at 0x7fffffffdec0
source language c++.
Arglist at 0x7fffffffde70, args: a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0,
b=4, f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0
Locals at 0x7fffffffde70, Previous frame's sp is 0x7fffffffde80
Saved registers:
rbp at 0x7fffffffde70, rip at 0x7fffffffde78
(gdb) p *(float*)(0x7fffffffde80 - 20)
$1 = -5.38359187e+25
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>From gdb-prs-return-21124-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Mar 11 00:54:25 2017
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Subject: [Bug c++/18881] bogus 'Cannot resolve function foo to any overloaded
instance'
Date: Sat, 11 Mar 2017 00:54:00 -0000
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Martin Sebor <msebor at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gmail dot com
--- Comment #2 from Martin Sebor <msebor at gmail dot com> ---
It looks fixed in GDB 7.10.1-31.fc23. The output also looks correct (the
"const" in 7.9.1 output, i.e., "(const U *) 0x7fffffffd9bf" does not).
$ gcc -g3 t.cpp && gdb -batch -ex 'b bar' -ex r -ex 'p FOO1(b)' -ex 'p FOO2(b)'
-ex 'p foo((A)b)' -ex 'p foo((A)b) ? foo((A)b) : foo((A)b)' a.out
Breakpoint 1 at 0x40051e: file t.cpp, line 14.
Breakpoint 1, bar (b=0x7fffffffe1af) at t.cpp:14
14 if (FOO2 (b))
$1 = (U *) 0x7fffffffe1af
$2 = (U *) 0x7fffffffe1af
$3 = (U *) 0x7fffffffe1af
$4 = (U *) 0x7fffffffe1af
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>From gdb-prs-return-21125-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 13 17:09:47 2017
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE isntructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Mon, 13 Mar 2017 17:09:00 -0000
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Adam Stylinski <kungfujesus06 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|A function with a |A function with VEX encoded
|particular number of |SSE isntructions and a
|arguments corrupts a value |particular number of
|calculated on the stack |arguments corrupts a value
|when stepping through the |calculated on the stack
|function |when stepping through the
| |function
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Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
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Adam Stylinski <kungfujesus06 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|A function with VEX encoded |A function with VEX encoded
|SSE isntructions and a |SSE instructions and a
|particular number of |particular number of
|arguments corrupts a value |arguments corrupts a value
|calculated on the stack |calculated on the stack
|when stepping through the |when stepping through the
|function |function
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>From gdb-prs-return-21127-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Mar 13 23:07:04 2017
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Subject: [Bug c++/15242] function-like cast notation
Date: Mon, 13 Mar 2017 23:07:00 -0000
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Martin Sebor <msebor at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |msebor at gmail dot com
--- Comment #1 from Martin Sebor <msebor at gmail dot com> ---
This missing functionality causes trouble when evaluating GCC predefined macros
like __DBL_MAX__. For example, in GNU gdb (GDB) Fedora 7.12.1-47.fc25:
(gdb) p __DBL_MAX__
A syntax error in expression, near `1.79769313486231570815e+308L)'.
(gdb) info macro __DBL_MAX__
Defined at /ssd/src/gcc/79800/gcc/gimple-fold.c:0
-D__DBL_MAX__=double(1.79769313486231570815e+308L)
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>From gdb-prs-return-21128-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 14 11:17:58 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/15242] function-like cast notation
Date: Tue, 14 Mar 2017 11:17:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
We should obviously fix that, but I thought I'd mention the workaround for
folks that come here after running into this:
(gdb) macro define __DBL_MAX__ ((double)1.79769313486231570815e+308L)
I.e., redefine the macro to something that gdb understands. Evaluating
expressions that involve __DBL_MAX__ will now use GDB's definition instead of
the originally compiled in one.
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>From gdb-prs-return-21129-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 14 18:22:01 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21220] "restore" for large data structures extremely slow
on GNU/Linux
Date: Tue, 14 Mar 2017 18:22:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Arnez <arnez@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=87c336f60eccc6506ff19369c29575f43fea02ea
commit 87c336f60eccc6506ff19369c29575f43fea02ea
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date: Tue Mar 14 19:20:46 2017 +0100
inf-ptrace: Do not stop memory transfers after a single word
When inf_ptrace_xfer_partial performs a memory transfer via ptrace with
PT_READ_I, PT_WRITE_I (aka PTRACE_PEEKTEXT, PTRACE_POKETEXT), etc., then
it currently transfers at most one word. This behavior yields degraded
performance, particularly if the caller has significant preparation work
for each invocation. And indeed it has for writing, in
memory_xfer_partial in target.c, where all of the remaining data to be
transferred is copied to a temporary buffer each time, for breakpoint
shadow handling. Thus large writes have quadratic runtime and can take
hours.
Note: On GNU/Linux targets GDB usually does not use
inf_ptrace_xfer_partial for large memory transfers, but attempts a single
read/write from/to /proc/<pid>/mem instead. However, the kernel may
reject writes to /proc/<pid>/mem (such as kernels prior to 2.6.39), or
/proc may not be mounted. In both cases GDB falls back to the ptrace
mechanism.
This patch fixes the performance issue by attempting to fulfill the whole
transfer request in inf_ptrace_xfer_partial, using a loop around the
ptrace call.
gdb/ChangeLog:
PR gdb/21220
* inf-ptrace.c (inf_ptrace_xfer_partial): In "case
TARGET_OBJECT_MEMORY", extract the logic for ptrace peek/poke...
(inf_ptrace_peek_poke): ...here. New function. Now also loop
over ptrace peek/poke until end of buffer or error.
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From: "arnez at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21220] "restore" for large data structures extremely slow
on GNU/Linux
Date: Tue, 14 Mar 2017 18:28:00 -0000
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
(In reply to cvs-commit@gcc.gnu.org from comment #2)
> The master branch has been updated by Andreas Arnez <arnez@sourceware.org>:
>
> https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;
> h=87c336f60eccc6506ff19369c29575f43fea02ea
The above commit should fix the bug.
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>From gdb-prs-return-21131-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 15 20:41:50 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/18779] collection of issues handling C strings in python
Date: Wed, 15 Mar 2017 20:41:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simon.marchi at ericsson dot com
--- Comment #2 from Simon Marchi <simon.marchi at ericsson dot com> ---
I just tried to use LazyString for the first time, and I stumbled on similar
problems. My big question is: how do you get a Python string out of the
LazyString?
I ended up doing
lazy_string.value().address.string()
After reading the doc, I expected lazy_string.value() to return a gdb.Value()
representing a char*. I guess it works if the string is nul-terminated only...
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>From gdb-prs-return-21132-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Mar 16 16:31:23 2017
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Subject: [Bug python/17728] gdb.LazyString is confused by typedefs
Date: Thu, 16 Mar 2017 16:31:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Doug Evans <devans@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=34b433203b5f56149c27a8dfea21a921392cb158
commit 34b433203b5f56149c27a8dfea21a921392cb158
Author: Doug Evans <dje@google.com>
Date: Wed Mar 15 15:35:13 2017 -0700
Fix various python lazy string bugs.
gdb/ChangeLog:
PR python/17728, python/18439, python/18779
* python/py-lazy-string.c (lazy_string_object): Clarify use of LENGTH
member. Change type of TYPE member to PyObject *. All uses updated.
(stpy_convert_to_value): Fix handling of TYPE_CODE_PTR.
(gdbpy_create_lazy_string_object): Flag bad length values.
Handle TYPE_CODE_ARRAY with possibly different user-provided length.
Handle typedefs in incoming type.
(stpy_lazy_string_elt_type): New function.
(gdbpy_extract_lazy_string): Call it.
* python/py-value.c (valpy_lazy_string): Flag bad length values.
Fix handling of TYPE_CODE_PTR. Handle TYPE_CODE_ARRAY. Handle
typedefs in incoming type.
gdb/testsuite/ChangeLog:
PR python/17728, python/18439, python/18779
* gdb.python/py-value.c (main) Delete locals sptr, sn.
* gdb.python/py-lazy-string.c (pointer): New typedef.
(main): New locals ptr, array, typedef_ptr.
* gdb.python/py-value.exp: Move lazy string tests to ...
* gdb.python/py-lazy-string.exp: ... here. Add more tests for pointer,
array, typedef lazy strings.
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>From gdb-prs-return-21133-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Mar 16 17:24:25 2017
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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/18439] lazy string value method ignores length
Date: Thu, 16 Mar 2017 17:24:00 -0000
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--- Comment #1 from dje at google dot com ---
[manually copied from 17728]
The master branch has been updated by Doug Evans <devans@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=34b433203b5f56149c27a8dfea21a921392cb158
commit 34b433203b5f56149c27a8dfea21a921392cb158
Author: Doug Evans <dje@google.com>
Date: Wed Mar 15 15:35:13 2017 -0700
Fix various python lazy string bugs.
gdb/ChangeLog:
PR python/17728, python/18439, python/18779
* python/py-lazy-string.c (lazy_string_object): Clarify use of LENGTH
member. Change type of TYPE member to PyObject *. All uses updated.
(stpy_convert_to_value): Fix handling of TYPE_CODE_PTR.
(gdbpy_create_lazy_string_object): Flag bad length values.
Handle TYPE_CODE_ARRAY with possibly different user-provided length.
Handle typedefs in incoming type.
(stpy_lazy_string_elt_type): New function.
(gdbpy_extract_lazy_string): Call it.
* python/py-value.c (valpy_lazy_string): Flag bad length values.
Fix handling of TYPE_CODE_PTR. Handle TYPE_CODE_ARRAY. Handle
typedefs in incoming type.
gdb/testsuite/ChangeLog:
PR python/17728, python/18439, python/18779
* gdb.python/py-value.c (main) Delete locals sptr, sn.
* gdb.python/py-lazy-string.c (pointer): New typedef.
(main): New locals ptr, array, typedef_ptr.
* gdb.python/py-value.exp: Move lazy string tests to ...
* gdb.python/py-lazy-string.exp: ... here. Add more tests for pointer,
array, typedef lazy strings.
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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/18779] collection of issues handling C strings in python
Date: Thu, 16 Mar 2017 17:25:00 -0000
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--- Comment #3 from dje at google dot com ---
[manually copied from 17728]
The master branch has been updated by Doug Evans <devans@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=34b433203b5f56149c27a8dfea21a921392cb158
commit 34b433203b5f56149c27a8dfea21a921392cb158
Author: Doug Evans <dje@google.com>
Date: Wed Mar 15 15:35:13 2017 -0700
Fix various python lazy string bugs.
gdb/ChangeLog:
PR python/17728, python/18439, python/18779
* python/py-lazy-string.c (lazy_string_object): Clarify use of LENGTH
member. Change type of TYPE member to PyObject *. All uses updated.
(stpy_convert_to_value): Fix handling of TYPE_CODE_PTR.
(gdbpy_create_lazy_string_object): Flag bad length values.
Handle TYPE_CODE_ARRAY with possibly different user-provided length.
Handle typedefs in incoming type.
(stpy_lazy_string_elt_type): New function.
(gdbpy_extract_lazy_string): Call it.
* python/py-value.c (valpy_lazy_string): Flag bad length values.
Fix handling of TYPE_CODE_PTR. Handle TYPE_CODE_ARRAY. Handle
typedefs in incoming type.
gdb/testsuite/ChangeLog:
PR python/17728, python/18439, python/18779
* gdb.python/py-value.c (main) Delete locals sptr, sn.
* gdb.python/py-lazy-string.c (pointer): New typedef.
(main): New locals ptr, array, typedef_ptr.
* gdb.python/py-value.exp: Move lazy string tests to ...
* gdb.python/py-lazy-string.exp: ... here. Add more tests for pointer,
array, typedef lazy strings.
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From: "andre.poenitz at digia dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21256] New: [Feature Request] Access symbols in an object
file
Date: Thu, 16 Mar 2017 17:37:00 -0000
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Bug ID: 21256
Summary: [Feature Request] Access symbols in an object file
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While the functionality can be emulated by running using something on top of
gdb.execute('maint print msymbols %s' % objfile.filename), it would be
convenient to be able to access symbols in an object file (e.g. obtained using
a new_objfile handler) more directly.
I guess I am looking for some kind of "inverse" of Symtab.objfile here.
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Subject: [Bug python/18779] collection of issues handling C strings in python
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--- Comment #4 from Simon Marchi <simon.marchi at ericsson dot com> ---
I tested quickly, it looks good, awesome! Thanks!
>>> s
<gdb.LazyString object at 0x7f0e3a3eba60>
>>> print(s.value().type)
char [8]
>>> print(s.value())
"lalalala"
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Subject: [Bug gdb/21256] [Feature Request] Access symbols in an object file
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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----------------------------------------------------------------------------
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Subject: [Bug gdb/10886] Crash of gdb 7.0 as shipped with Unbuntu 9.10,
probably due to a double free.
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Andre' <andre.poenitz at qt dot io> changed:
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--- Comment #3 from Andre' <andre.poenitz at qt dot io> ---
I guess that's not relevant anymore. Resolving as 'obsolete'
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Subject: [Bug python/21257] New: gdb.Type.name is empty for pointer/array
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Bug ID: 21257
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>>> gdb.lookup_type('int').name
'int'
>>> gdb.lookup_type('int').pointer().name
>>> gdb.lookup_type('int').array(5).name
The later two commands return None. It seems to me like they should return
'int *' and 'int [5]' respectively.
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Subject: [Bug gdb/19637] bound_registers.py uses type "long", but long merged
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7503099f3e29739d34cb1224d54fba96404e6e61
commit 7503099f3e29739d34cb1224d54fba96404e6e61
Author: Jonah Graham <jonah@kichwacoders.com>
Date: Fri Mar 17 14:57:44 2017 +0000
Fix PR gdb/19637: bound_registers.py: Add support for Python 3
Fix this the same way gdb/python/lib/gdb/printing.py handles it.
gdb/Changelog:
2017-03-17 Jonah Graham <jonah@kichwacoders.com>
PR gdb/19637
* python/lib/gdb/printer/bound_registers.py: Add support for
Python 3.
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Subject: [Bug gdb/19637] bound_registers.py uses type "long", but long merged
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Fix pushed.
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9bcbdca808b5f9fec6217d20bd4b48a56008c460
commit 9bcbdca808b5f9fec6217d20bd4b48a56008c460
Author: Pedro Alves <palves@redhat.com>
Date: Fri Mar 17 16:08:12 2017 +0000
PR remote/21188: Fix remote serial timeout
As Gareth McMullin <gareth@blacksphere.co.nz> reports at
<https://sourceware.org/ml/gdb-patches/2017-02/msg00560.html>, the
timeout mechanism in ser-unix.c was broken by commit 048094acc
("target remote: Don't rely on immediate_quit (introduce quit
handlers)").
Instead of applying a local fix, and since we now finally always use
interrupt_select [1], let's get rid of hardwire_readchar entirely, and
use ser_base_readchar instead, which has similar timeout handling,
except for the bug.
Smoke tested with:
$ socat -d -d pty,raw,echo=0 pty,raw,echo=0
2017/03/14 14:08:13 socat[4994] N PTY is /dev/pts/14
2017/03/14 14:08:13 socat[4994] N PTY is /dev/pts/15
2017/03/14 14:08:13 socat[4994] N starting data transfer loop with FDs
[3,3] and [5,5]
$ gdbserver /dev/pts/14 PROG
$ gdb PROG -ex "tar rem /dev/pts/15"
and then a few continues/ctrl-c's, plus killing gdbserver and socat.
[1] - See FIXME comments being removed.
gdb/ChangeLog:
2017-03-17 Pedro Alves <palves@redhat.com>
PR remote/21188
* ser-base.c (ser_base_wait_for): Add comment.
(do_ser_base_readchar): Improve comment based on the ser-unix.c's
version.
* ser-unix.c (hardwire_raw): Remove reference to
scb->current_timeout.
(wait_for, do_hardwire_readchar, hardwire_readchar): Delete.
(hardwire_ops): Install ser_base_readchar instead of
hardwire_readchar.
* serial.h (struct serial) <current_timeout, timeout_remaining>:
Remove fields.
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Subject: [Bug remote/21188] Remote timeouts don't work correctly
Date: Fri, 17 Mar 2017 16:27:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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Subject: [Bug remote/21188] Remote timeouts don't work correctly
Date: Fri, 17 Mar 2017 16:27:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Should be fixed.
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Subject: [Bug tui/21227] GDB crashes when switching layout from asm to src
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Edjunior Machado <emachado at sourceware dot org> changed:
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--- Comment #1 from Edjunior Machado <emachado at sourceware dot org> ---
Looks similar to the regression fixed by this commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=5f6fd321915fae0194e01322d22cad4e451e8d20
Could you please confirm if this is still valid on upstream gdb?
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Subject: [Bug gdb/21272] New: Missing call to to_can_do_single_step for
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Bug ID: 21272
Summary: Missing call to to_can_do_single_step for
arm-none-eabi
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Created attachment 9906
--> https://sourceware.org/bugzilla/attachment.cgi?id=9906&action=edit
Logging ouput from GDB (with debug remote and debug target both set to 1)
I'm currently implementing a GDB remote stub on an ARMv6 target
(--target=arm-none-eabi). This stub does _not_ support single-stepping via the
OS or via hardware.
The stub replies
"PacketSize=516;qXfer:features:read+;QThreadEvents+;vContSupported+;swbreak+;QStartNoAckMode+"
to "qSupported", and "vCont;c;C" to "vCont?".
In spite of this, to_target_can_do_single_step is never called, and GDB sends a
vCont packet containing 's', which the remote stub does not support.
Please find enclosed the logging ouput from GDB (with debug remote and debug
target both set to 1).
Any thoughts?
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--- Comment #15 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a65cfae5f8b268158c23a862e7a996d15bbcef0e
commit a65cfae5f8b268158c23a862e7a996d15bbcef0e
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:41 2017 -0700
Add ability to return rvalue reference values from value_ref
Parameterize value_ref() by the kind of reference type the value of which
is requested. Change all callers to use the new API.
gdb/ChangeLog
PR gdb/14441
* ada-lang.c (ada_evaluate_subexp): Adhere to the new
value_ref() interface.
* c-valprint.c (c_value_print): Likewise.
* infcall.c (value_arg_coerce): Likewise.
* python/py-value.c (valpy_reference_value): Likewise.
* valops.c (value_cast, value_reinterpret_cast)
(value_dynamic_cast, typecmp): Likewise.
(value_ref): Parameterize by kind of return value reference type.
* value.h (value_ref): Add new parameter "refcode".
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
Date: Mon, 20 Mar 2017 20:50:00 -0000
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--- Comment #21 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aa0061181ab00081e9907447561e589d6edee9f2
commit aa0061181ab00081e9907447561e589d6edee9f2
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:54 2017 -0700
Convert lvalue reference type check to general reference type check
In almost all contexts (except for overload resolution rules and expression
semantics), lvalue and rvalue references are equivalent. That means that in
all
but these cases we can replace a TYPE_CODE_REF check to a TYPE_IS_REFERENCE
check and, for switch statements, add a case label for a rvalue reference
type
next to a case label for an lvalue reference type. This patch does exactly
that.
gdb/ChangeLog
PR gdb/14441
* aarch64-tdep.c (aarch64_type_align)
(aarch64_extract_return_value, aarch64_store_return_value): Change
lvalue reference type checks to general reference type checks.
* amd64-tdep.c (amd64_classify): Likewise.
* amd64-windows-tdep.c (amd64_windows_passed_by_integer_register):
Likewise.
* arm-tdep.c (arm_type_align, arm_extract_return_value)
(arm_store_return_value): Likewise.
* ax-gdb.c (gen_fetch, gen_cast): Likewise.
* c-typeprint.c (c_print_type): Likewise.
* c-varobj.c (adjust_value_for_child_access, c_value_of_variable)
(cplus_number_of_children, cplus_describe_child): Likewise.
* compile/compile-c-symbols.c (generate_vla_size): Likewise.
* completer.c (expression_completer): Likewise.
* cp-support.c (make_symbol_overload_list_adl_namespace):
Likewise.
* darwin-nat-info.c (info_mach_region_command): Likewise.
* dwarf2loc.c (entry_data_value_coerce_ref)
(value_of_dwarf_reg_entry): Likewise.
* eval.c (ptrmath_type_p, evaluate_subexp_standard)
(evaluate_subexp_for_address, evaluate_subexp_for_sizeof):
Likewise.
* findvar.c (extract_typed_address, store_typed_address):
Likewise.
* gdbtypes.c (rank_one_type): Likewise.
* hppa-tdep.c (hppa64_integral_or_pointer_p): Likewise.
* infcall.c (value_arg_coerce): Likewise.
* language.c (pointer_type): Likewise.
* m32c-tdep.c (m32c_reg_arg_type, m32c_m16c_address_to_pointer):
Likewise.
* m88k-tdep.c (m88k_integral_or_pointer_p): Likewise.
* mn10300-tdep.c (mn10300_type_align): Likewise.
* msp430-tdep.c (msp430_push_dummy_call): Likewise.
* ppc-sysv-tdep.c (do_ppc_sysv_return_value)
(ppc64_sysv_abi_push_param, ppc64_sysv_abi_return_value):
Likewise.
* printcmd.c (print_formatted, x_command): Likewise.
* python/py-type.c (typy_get_composite, typy_template_argument):
Likewise.
* python/py-value.c (valpy_referenced_value)
(valpy_get_dynamic_type, value_has_field): Likewise.
* s390-linux-tdep.c (s390_function_arg_integer): Likewise.
* sparc-tdep.c (sparc_integral_or_pointer_p): Likewise.
* sparc64-tdep.c (sparc64_integral_or_pointer_p): Likewise.
* spu-tdep.c (spu_scalar_value_p): Likewise.
* symtab.c (lookup_symbol_aux): Likewise.
* typeprint.c (whatis_exp, print_type_scalar): Likewise.
* valarith.c (binop_types_user_defined_p, unop_user_defined_p):
Likewise.
* valops.c (value_cast_pointers, value_cast)
(value_reinterpret_cast, value_dynamic_cast, value_addr, typecmp)
(value_struct_elt, value_struct_elt_bitpos)
(value_find_oload_method_list, find_overload_match)
(value_rtti_indirect_type): Likewise.
* valprint.c (val_print_scalar_type_p, generic_val_print):
Likewise.
* value.c (value_actual_type, value_as_address, unpack_long)
(pack_long, pack_unsigned_long, coerce_ref_if_computed)
(coerce_ref): Likewise.
* varobj.c (varobj_get_value_type): Likewise.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
Date: Mon, 20 Mar 2017 20:50:00 -0000
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--- Comment #13 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f9aeb8d499fa12610610dc19618230304c698f6c
commit f9aeb8d499fa12610610dc19618230304c698f6c
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:30 2017 -0700
Add definitions for rvalue reference types
This patch introduces preliminal definitions regarding C++11 rvalue
references
to the gdb type system. In addition to an enum type_code entry, a field in
struct type and an accessor macro for that which are created similarly to
the
lvalue references counterparts, we also introduce a TYPE_REFERENCE
convenience
macro used to check for both kinds of references simultaneously as they are
equivalent in many contexts.
gdb/Changelog
PR gdb/14441
* gdbtypes.h (enum type_code) <TYPE_CODE_RVALUE_REF>: New constant.
(TYPE_IS_REFERENCE): New macro.
(struct type): Add rvalue_reference_type field.
(TYPE_RVALUE_REFERENCE_TYPE): New macro.
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--- Comment #16 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=53cc15f5fe1f5e2358994d4f60f1c2aa9115004d
commit 53cc15f5fe1f5e2358994d4f60f1c2aa9115004d
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:43 2017 -0700
Support rvalue reference type in parser
This patch implements correct parsing of C++11 rvalue reference typenames.
This is done in full similarity to the handling of regular references by
adding
a '&&' token handling in c-exp.y, defining an rvalue reference type piece,
and
implementing a follow type derivation in follow_types().
gdb/ChangeLog
PR gdb/14441
* c-exp.y (ptr_operator): Handle the '&&' token in the typename.
* parse.c (insert_type): Change assert statement.
(follow_types): Handle rvalue reference types.
* parser-defs.h (enum type_pieces) <tp_rvalue_reference>: New
constant.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #17 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e4347c89f3a14b480fc88581d1363835f7b99b68
commit e4347c89f3a14b480fc88581d1363835f7b99b68
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:46 2017 -0700
Implement demangling for rvalue reference type names
This patch fixes demangling of names containing rvalue reference typenames
by
handling DEMANGLE_COMPONENT_RVALUE_REFERENCE demangle component.
gdb/ChangeLog
PR gdb/14441
* cp-name-parser.y (ptr_operator): Handle the '&&' token in
typename.
* cp-support.c (replace_typedefs): Handle
DEMANGLE_COMPONENT_RVALUE_REFERENCE.
* python/py-type.c (typy_lookup_type): Likewise.
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--- Comment #20 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3fcf899da106890f3948093c2424f9dff67d6fe0
commit 3fcf899da106890f3948093c2424f9dff67d6fe0
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:52 2017 -0700
Support rvalue references in the gdb python module (includes doc/)
This patch adds the ability to inspect rvalue reference types and values
using
the gdb python module. This is achieved by creating two wrappers for
valpy_reference_value(), using the ReferenceExplorer class to handle the
objects of rvalue reference types and placing necessary checks for a
TYPE_CODE_RVALUE_REF type code next to the checks for a TYPE_CODE_REF type
code.
gdb/ChangeLog
PR gdb/14441
* doc/python.texi (Types in Python): Add TYPE_CODE_RVALUE_REF to
table of constants.
* python/lib/gdb/command/explore.py: Support exploring values
of rvalue reference types.
* python/lib/gdb/types.py: Implement get_basic_type() for
rvalue reference types.
* python/py-type.c (pyty_codes) <TYPE_CODE_RVALUE_REF>: New
constant.
* python/py-value.c (valpy_getitem): Add an rvalue reference
check.
(valpy_reference_value): Add new parameter "refcode".
(valpy_lvalue_reference_value, valpy_rvalue_reference_value):
New wrappers for valpy_reference_value().
* python/py-xmethods.c (gdbpy_get_xmethod_result_type)
(gdbpy_invoke_xmethod): Likewise.
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--- Comment #19 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4297a3f0029974c62628d69b6f3f9ef25f01ea7d
commit 4297a3f0029974c62628d69b6f3f9ef25f01ea7d
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:50 2017 -0700
Support DW_TAG_rvalue_reference type
Make gdb DWARF reader understand the DW_TAG_rvalue_reference type tag.
Handling
of this tag is done in the existing read_tag_reference_type() function, to
which we add a new parameter representing the kind of reference type
(lvalue vs rvalue).
gdb/ChangeLog
PR gdb/14441
* dwarf2read.c (process_die, read_type_die_1): Handle the
DW_TAG_rvalue_reference_type DIE.
(read_tag_reference_type): Add new parameter "refcode".
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #18 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e1cb3213476485a01aa11ecedfa186e386cb4bdb
commit e1cb3213476485a01aa11ecedfa186e386cb4bdb
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:48 2017 -0700
Implement printing of rvalue reference types and values
This patch provides the ability to print out names of rvalue reference
types
and values of those types. This is done in full similarity to regular
references, and as with them, we don't print out "const" suffix because all
rvalue references are const.
gdb/ChangeLog
PR gdb/14441
* c-typeprint.c (c_print_type, c_type_print_varspec_prefix)
(c_type_print_modifier, c_type_print_varspec_suffix)
(c_type_print_base): Support printing rvalue reference types.
* c-valprint.c (c_val_print, c_value_print): Support printing
rvalue reference values.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #14 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3b22433085e4cfee83f5c52f3baa8fb9bc67f8dd
commit 3b22433085e4cfee83f5c52f3baa8fb9bc67f8dd
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:39 2017 -0700
Change {lookup,make}_reference_type API
Parameterize lookup_reference_type() and make_reference_type() by the kind
of
reference type we want to look up. Create two wrapper functions
lookup_{lvalue,rvalue}_reference_type() for lookup_reference_type() to
simplify
the API. Change all callers to use the new API.
gdb/Changelog
PR gdb/14441
* dwarf2read.c (read_tag_reference_type): Use
lookup_lvalue_reference_type() instead of lookup_reference_type().
* eval.c (evaluate_subexp_standard): Likewise.
* f-exp.y: Likewise.
* gdbtypes.c (make_reference_type, lookup_reference_type):
Generalize with rvalue reference types.
(lookup_lvalue_reference_type, lookup_rvalue_reference_type): New
convenience wrappers for lookup_reference_type().
* gdbtypes.h (make_reference_type, lookup_reference_type): Add a
reference kind parameter.
(lookup_lvalue_reference_type, lookup_rvalue_reference_type): Add
wrappers for lookup_reference_type().
* guile/scm-type.c (gdbscm_type_reference): Use
lookup_lvalue_reference_type() instead of lookup_reference_type().
* guile/scm-value.c (gdbscm_value_dynamic_type): Likewise.
* parse.c (follow_types): Likewise.
* python/py-type.c (typy_reference, typy_lookup_type): Likewise.
* python/py-value.c (valpy_get_dynamic_type, valpy_getitem):
Likewise.
* python/py-xmethods.c (gdbpy_get_xmethod_result_type)
(gdbpy_invoke_xmethod): Likewise.
* stabsread.c: Provide extra argument to make_reference_type()
call.
* valops.c (value_ref, value_rtti_indirect_type): Use
lookup_lvalue_reference_type() instead of lookup_reference_type().
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--- Comment #23 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c0f55cc689a57deb342b988b8f0ecb908f0a76e1
commit c0f55cc689a57deb342b988b8f0ecb908f0a76e1
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:59 2017 -0700
Add rvalue reference tests and docs
This patch adds tests for the initial rvalue reference support patchset.
All
of the new tests are practically mirrored regular references tests and,
except
for the demangler ones, are introduced in new files, which are set to be
compiled with -std=gnu++11. Tested are printing of rvalue reference types
and
values, rvalue reference parameters in function overloading, demangling of
function names containing rvalue reference parameters, casts to rvalue
reference types, application of the sizeof operator to rvalue reference
types
and values, and support for rvalue references within the gdb python module.
gdb/ChnageLog
PR gdb/14441
* NEWS: Mention support for rvalue references in GDB and python.
* doc/gdb.texinfo (C Plus Plus Expressions): Mention that GDB
supports both lvalue and rvalue references.
gdb/testsuite/ChangeLog
PR gdb/14441
* gdb.cp/demangle.exp: Add rvalue reference tests.
* gdb.cp/rvalue-ref-casts.cc: New file.
* gdb.cp/rvalue-ref-casts.exp: New file.
* gdb.cp/rvalue-ref-overload.cc: New file.
* gdb.cp/rvalue-ref-overload.exp: New file.
* gdb.cp/rvalue-ref-params.cc: New file.
* gdb.cp/rvalue-ref-params.exp: New file.
* gdb.cp/rvalue-ref-sizeof.cc: New file.
* gdb.cp/rvalue-ref-sizeof.exp: New file.
* gdb.cp/rvalue-ref-types.cc: New file.
* gdb.cp/rvalue-ref-types.exp: New file.
* gdb.python/py-rvalue-ref-value-cc.cc: New file.
* gdb.python/py-rvalue-ref-value-cc.exp: New file.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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--- Comment #22 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=15c0a2a9305648095f5586a02b5a5017e1643e99
commit 15c0a2a9305648095f5586a02b5a5017e1643e99
Author: Artemiy Volkov <artemiyv@acm.org>
Date: Mon Mar 20 13:47:57 2017 -0700
Add rvalue references to overloading resolution
This patch introduces changes to rank_one_type() dealing with ranking an
rvalue
reference type when selecting a best viable function from a set of
candidate
functions. The 4 new added rules for rvalue references are:
1) An rvalue argument cannot be bound to a non-const lvalue reference
parameter
and an lvalue argument cannot be bound to an rvalue reference parameter.
[C++11 13.3.3.1.4p3]
2) If a conversion to one type of reference is an identity conversion, and
a
conversion to the second type of reference is a non-identity conversion,
choose
the first type. [C++11 13.3.3.2p3]
3) An rvalue should be first tried to bind to an rvalue reference, and then
to
an lvalue reference. [C++11 13.3.3.2p3]
4) An lvalue reference to a function gets higher priority than an rvalue
reference to a function. [C++11 13.3.3.2p3]
This patch is not exactly correct. See c++/15372 for tracking overload
resolution bugs.
gdb/ChangeLog
PR gdb/14441
* gdbtypes.c (rank_one_type): Implement overloading
resolution rules regarding rvalue references.
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Subject: [Bug symtab/14441] Need to support DW_TAG_rvalue_reference_type
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #24 from Keith Seitz <keiths at redhat dot com> ---
Pushed in time for 8.0 release.
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jose E. Marchesi
<jemarch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5badf10a18af78c57dd4ce8e6a6ead7f46e1a878
commit 5badf10a18af78c57dd4ce8e6a6ead7f46e1a878
Author: Ivo Raisr <ivo.raisr@oracle.com>
Date: Tue Mar 21 04:39:33 2017 -0700
Decode properly flags of %ccr register on sparc64.
While at it, decode also properly one-bit flags for %fsr (accrued and
current exception flags were mixed up).
ChangeLog entry:
2017-03-21 Ivo Raisr <ivo.raisr@oracle.com>
PR tdep/20928
* gdb/sparc-tdep.h (gdbarch_tdep) <sparc64_ccr_type>: New
field.
* gdb/sparc64-tdep.c (sparc64_ccr_type): New function.
(sparc64_fsr_type): Fix %fsr decoding.
ChangeLog entry for testsuite:
2017-03-21 Ivo Raisr <ivo.raisr@oracle.com>
PR tdep/20928
* gdb.arch/sparc64-regs.exp: New file.
* gdb.arch/sparc64-regs.S: Likewise.
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Subject: [Bug remote/21188] Remote timeouts don't work correctly
Date: Tue, 21 Mar 2017 15:37:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0e7b8f61069f1219ca53a9dd927ba55c9a7eefd4
commit 0e7b8f61069f1219ca53a9dd927ba55c9a7eefd4
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Tue Mar 21 11:35:42 2017 -0400
Remove remaining reference to struct serial::current_timeout
I get this when trying to build for --host=x68_64-w64-mingw32:
/home/emaisin/src/binutils-gdb/gdb/ser-mingw.c: In function 'void
ser_windows_raw(serial*)':
/home/emaisin/src/binutils-gdb/gdb/ser-mingw.c:166:8: error: 'struct
serial' has no member named 'current_timeout'
scb->current_timeout = 0;
^~~~~~~~~~~~~~~
It is just a leftover from
9bcbdca808b5f9fec6217d20bd4b48a56008c460
PR remote/21188: Fix remote serial timeout
gdb/ChangeLog:
* ser-mingw.c (ser_windows_raw): Remove reference to
struct serial::current_timeout.
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Subject: [Bug compile/21284] New: all FLAGS should be add "-static" when
using mingw_gcc_5.3.0
Date: Wed, 22 Mar 2017 02:21:00 -0000
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Bug ID: 21284
Summary: all FLAGS should be add "-static" when using
mingw_gcc_5.3.0
Product: gdb
Version: 7.12
Status: UNCONFIRMED
Severity: normal
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I have downloaded gdb7.12.tar.gz and mingw-get-setup.exe.
Running mingw-get-setup.exe, i got a development environment of mingw.
The gcc version is 5.3.0.
When i configured gdb as "../gdb-7.12/configure --disable-werror" in the
mingw, it succeed, then "make" is succeed too.
Result :
I tried to running gdb as ./gdb/gdb in my build dir, and typed "s" as a
command in the command line, when i enterd "Enter", command "s" was trying to
executed, but i got messgae below:
"This application has requested the Runtime to terminate it in an unusual
way. please contact the application's support team for more information"
Then , gdb crashed.
The gdb failed in the function of "thow_error()", it may need some "*.dll"。
Later：
I configured gdb as "../gdb-7.12/configure --disable-werror" in the
mingw, it succeed；Opened Makefile and added "-static" to all the FLAGS;
Then "make" is succeed too.
This time， gdb was running normally！
（By the way，i can not compiled gdb7.12 success when using mingw gcc 4.6.1
and mingw gcc 4.8.1）
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Subject: [Bug gdb/19637] bound_registers.py uses type "long", but long merged
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Date: Wed, 22 Mar 2017 11:23:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9d736fbf01d20bc03804fa0cb49d99fdf6628fab
commit 9d736fbf01d20bc03804fa0cb49d99fdf6628fab
Author: Jonah Graham <jonah@kichwacoders.com>
Date: Wed Mar 22 11:19:44 2017 +0000
Import sys in gdb/python/lib/gdb/printer/bound_registers.py
Pick up missing bits from the patch merged in.
2017-03-22 Jonah Graham <jonah@kichwacoders.com>
PR gdb/19637
* python/lib/gdb/printer/bound_registers.py: Import sys.
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From: "al.drozdov at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/21293] New: step into function doesn't work for shared
libraries built with -Wl,-znow
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Bug ID: 21293
Summary: step into function doesn't work for shared libraries
built with -Wl,-znow
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: al.drozdov at gmail dot com
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Created attachment 9932
--> https://sourceware.org/bugzilla/attachment.cgi?id=9932&action=edit
Minimal project to reproduce the bug
If a shared library is created with -Wl,-znow option then gdb cannot step into
its internal functions. Instead, it behaves as if 'next' command was just
typed. But it is still possible to make breakpoints on the library functions
gdb cannot step into, and then gdb successfully stops on them.
It seems that this because ".rela.plt" section is absent on the libraries built
with -Wl,-znow.
gdb 7.12.1 on Ubuntu 6.04.2 x86_64, ld 2.26.1.
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Subject: [Bug symtab/21293] step into function doesn't work for shared
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Alexander Drozdov <al.drozdov at gmail dot com> changed:
What |Removed |Added
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Subject: [Bug symtab/21293] step into function doesn't work for shared
libraries built with -Wl,-znow
Date: Thu, 23 Mar 2017 05:57:00 -0000
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--- Comment #1 from Alexander Drozdov <al.drozdov at gmail dot com> ---
*** Bug 21292 has been marked as a duplicate of this bug. ***
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To: gdb-prs@sourceware.org
Subject: [Bug symtab/21292] New: step into function doesn't work for shared
libraries built with -Wl,-znow
Date: Thu, 23 Mar 2017 05:57:00 -0000
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Bug ID: 21292
Summary: step into function doesn't work for shared libraries
built with -Wl,-znow
Product: gdb
Version: 7.12.1
Status: RESOLVED
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: al.drozdov at gmail dot com
Target Milestone: ---
Status: RESOLVED
Resolution: DUPLICATE
If a shared library is created with -Wl,-znow option then gdb cannot step into
its internal functions. Instead, it behaves as if 'next' command was just
typed. But it is still possible to make breakpoints on the library functions
gdb cannot step into, and then gdb successfully stops on them.
It seems that this because ".rela.plt" section is absent on the libraries built
with -Wl,-znow.
gdb 7.12.1 on Ubuntu 6.04.2 x86_64, ld 2.26.1.
--- Comment #1 from Alexander Drozdov <al.drozdov at gmail dot com> ---
Duplicate of 21293
*** This bug has been marked as a duplicate of bug 21293 ***
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From: "freddie_chopin at op dot pl" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21308] New: Cannot get non-type template argument if it
is a const-qualified member pointer
Date: Sat, 25 Mar 2017 23:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21308
Bug ID: 21308
Summary: Cannot get non-type template argument if it is a
const-qualified member pointer
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: freddie_chopin at op dot pl
Target Milestone: ---
Source code:
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
struct C { int a; };
template<const int C::* Pointer>
struct D {};
int main()
{
D<&C::a> d;
return 0;
}
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
It's not possible to get non-type template argument with Python API if it is a
const-qualified member pointer. Any attempt results in "RuntimeError: Template
argument is optimized out". See log for details:
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
$ g++ -g -ggdb3 gdb.cpp
$ gdb ./a.out
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a.out...done.
(gdb) b main
Breakpoint 1 at 0x4004ca: file gdb.cpp, line 9.
(gdb) run
Starting program: /home/freddie/test/a.out
Breakpoint 1, main () at gdb.cpp:9
9 return 0;
(gdb) python
print(gdb.selected_frame().read_var('d').type.template_argument(0))
Traceback (most recent call last):
File "<string>", line 1, in <module>
RuntimeError: Template argument is optimized out
Error while executing Python code.
(gdb)
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
If I remove "const" from the template (so "template<int C::* Pointer>", nothing
more changed), it works fine:
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
...
(gdb) python
print(gdb.selected_frame().read_var('d').type.template_argument(0))
&C::a
-- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 -- >8 --
Any ideas whether it's a bug or maybe I'm doing something wrong?
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To: gdb-prs@sourceware.org
Subject: [Bug external/20207] kernel RFE: aarch64: ptrace: BAS: Support any
contiguous range
Date: Sun, 26 Mar 2017 21:43:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
f43365ee17f8 selftests: arm64: add test for unaligned/inexact watchpoint
handling
0ddb8e0b784b arm64: Allow hw watchpoint of length 3,5,6 and 7
fdfeff0f9e3d arm64: hw_breakpoint: Handle inexact watchpoint addresses
b08fb180bb88 arm64: Allow hw watchpoint at varied offset from base address
651be3cb0853 hw_breakpoint: Allow watchpoint of length 3,5,6 and 7
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Subject: [Bug breakpoints/19806] Aarch64: watchpoints set on
non-8-byte-aligned addresses are always missed
Date: Mon, 27 Mar 2017 21:12:00 -0000
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--- Comment #4 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[patch] aarch64: PR 19806: watchpoints: false negatives + PR 20207 contiguous
ones
https://sourceware.org/ml/gdb-patches/2017-03/msg00470.html
Message-ID: <20170327210753.GA29656@host1.jankratochvil.net>
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>From gdb-prs-return-21173-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 28 11:46:26 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21321] New: AddressSanitizer: heap-use-after-free in
gdbserver/linux-low.c
Date: Tue, 28 Mar 2017 11:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21321
Bug ID: 21321
Summary: AddressSanitizer: heap-use-after-free in
gdbserver/linux-low.c
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: qiyao at gcc dot gnu.org
Target Milestone: ---
I build GDBserver with CXXFLAGS='-O0 -g3 -fsanitize=address', and run GDB tests
with GDBserver like this,
$ make check RUNTESTFLAGS="--target_board='native-gdbserver'
process-dies-while-detaching.exp"
I get the asan error,
(gdb) FAIL: gdb.threads/process-dies-while-detaching.exp: single-process:
continue: killed outside: continue
Remote debugging from host 127.0.0.1^M
=================================================================^M
^[[1m^[[31m==26184==ERROR: AddressSanitizer: heap-use-after-free on address
0x611000020b10 at pc 0x48026c bp 0x7fff34b15a20 sp 0x7fff34b15a18^M
^[[1m^[[0m^[[1m^[[34mWRITE of size 4 at 0x611000020b10 thread T0^[[1m^[[0m^M
#0 0x48026b in linux_wait_1
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:3845^M
#1 0x4811ea in linux_wait
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:3990^M
#2 0x453fea in target_wait(ptid, target_waitstatus*, int)
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/target.c:268^M
#3 0x453a8a in mywait(ptid, target_waitstatus*, int, int)
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/target.c:214^M
#4 0x44b53b in resume
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/server.c:2786^M
.......
^M
^[[1m^[[32m0x611000020b10 is located 80 bytes inside of 216-byte region
[0x611000020ac0,0x611000020b98)^M
^[[1m^[[0m^[[1m^[[35mfreed by thread T0 here:^[[1m^[[0m^M
#0 0x2b1500432631 in __interceptor_free
(/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54631)^M
#1 0x4722e8 in delete_lwp
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:415^M
#2 0x47a7ed in linux_low_filter_event
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:2504^M
#3 0x47bdc0 in linux_wait_for_event_filtered
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:2800^M
#4 0x481c1f in wait_for_sigstop
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:4150^M
#5 0x482660 in stop_all_lwps
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:4287^M
#6 0x48018b in linux_wait_1
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:3813^M
#7 0x4811ea in linux_wait
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:3990^M
...^M
^[[1m^[[35mpreviously allocated by thread T0 here:^[[1m^[[0m^M
#0 0x2b15004329a1 in __interceptor_calloc
(/usr/lib/x86_64-linux-gnu/libasan.so.1+0x549a1)^M
#1 0x4147b6 in xcalloc
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/../common/common-utils.c:83^M
#2 0x4748c0 in add_lwp
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:937^M
#3 0x4731a3 in handle_extended_wait
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:624^M
#4 0x47ac69 in linux_low_filter_event
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:2568^M
#5 0x47bdc0 in linux_wait_for_event_filtered
/home/yao/SourceCode/gnu/gdb/git/gdb/gdbserver/linux-low.c:2800^.
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Tue, 28 Mar 2017 17:29:00 -0000
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--- Comment #9 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Any luck reproducing this? I was able to do it on another distro with GDB
7.12, though the stack corruption wasn't nearly as noticeable (increasing the
number of arguments can affect this, though).
GNU gdb (Gentoo 7.12 vanilla) 7.12
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Reading symbols from ./test.out...done.
(gdb) break testFunc
Breakpoint 1 at 0x400550: file test.cpp, line 12.
(gdb) r
Starting program: /home/adam/test.out
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0) at test.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) p lambda
$1 = 0.030302437
(gdb) disas
Dump of assembler code for function testFunc(float*, unsigned long, float*,
float*, float*, float, int, float, float**, float**, float**, float*, float*):
0x0000000000400526 <+0>: push %rbp
0x0000000000400527 <+1>: mov %rsp,%rbp
0x000000000040052a <+4>: sub $0x50,%rsp
0x000000000040052e <+8>: mov %rdi,-0x18(%rbp)
0x0000000000400532 <+12>: mov %rsi,-0x20(%rbp)
0x0000000000400536 <+16>: mov %rdx,-0x28(%rbp)
0x000000000040053a <+20>: mov %rcx,-0x30(%rbp)
0x000000000040053e <+24>: mov %r8,-0x38(%rbp)
0x0000000000400542 <+28>: vmovss %xmm0,-0x3c(%rbp)
0x0000000000400547 <+33>: mov %r9d,-0x40(%rbp)
0x000000000040054b <+37>: vmovss %xmm1,-0x44(%rbp)
0x0000000000400550 <+42>: vmovss 0x10c(%rip),%xmm0 # 0x400664
0x0000000000400558 <+50>: vdivss -0x44(%rbp),%xmm0,%xmm0
0x000000000040055d <+55>: vmovss %xmm0,-0x4(%rbp)
=> 0x0000000000400562 <+60>: vcvtss2sd -0x4(%rbp),%xmm2,%xmm2
0x0000000000400567 <+65>: vmovq %xmm2,%rax
0x000000000040056c <+70>: vmovq %rax,%xmm0
0x0000000000400571 <+75>: mov $0x400654,%edi
0x0000000000400576 <+80>: mov $0x1,%eax
0x000000000040057b <+85>: callq 0x400400 <printf@plt>
0x0000000000400580 <+90>: nop
0x0000000000400581 <+91>: leaveq
0x0000000000400582 <+92>: retq
End of assembler dump.
(gdb) n
lambda = 0.030302
14 }
(gdb)
main () at test.cpp:21
21 return 0;
(gdb)
22 }
adam@eggsbenedict ~ $ ./test.out
lambda = 0.031557
Here's after adding one more argument to the function signature and stepping
through the function call in the debugger:
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0, gz=0x0) at test.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) n
lambda = -98857.093750
14 }
So some static allocation somewhere is probably being overrun.
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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/21322] New: Reset pspace->executing_startup on
connection close?
Date: Tue, 28 Mar 2017 18:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21322
Bug ID: 21322
Summary: Reset pspace->executing_startup on connection close?
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: dje at google dot com
Target Milestone: ---
On Fuchsia the dynamic linker loads the main executable, so during startup the
executable doesn't actually exist in memory for awhile. I've been using the
"executing_startup" flag to track this.
If I have the remote server exit this flag is left set which leads to things
like "b main" not being able to find main. Perhaps that's a bug in itself,
though it's not unreasonable either (in the window during startup main hasn't
been loaded, and for PIE still needs to be relocated as well).
Anyways, if remote_unpush_target resets
current_program_space->executing_startup the problem goes away.
As for where the right place to reset this flag is, not sure yet.
(gdb) mon quit
Sending packet: $qRcmd,71756974#d1...Ack
Packet received: OK
(gdb) Remote connection closed
# reset remote server
(gdb) target ext ... # reconnect with new server
(gdb) b main
Function "main" not defined.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) p main
$1 = {int (int, char **)} 0x1508 <main>
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21323] New: GDB thinks char16_t and char32_t are signed in
C++
Date: Tue, 28 Mar 2017 18:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21323
Bug ID: 21323
Summary: GDB thinks char16_t and char32_t are signed in C++
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
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tmp$ cat c.c
#include <uchar.h>
int main()
{
char16_t u16 = 0xf000;
char32_t u32 = 0xf0000000;
return 0;
}
tmp$ gcc c.c -g
tmp$ gdb -q -ex "br 6" -ex run -ex "p u16" -ex "p u32" -ex cont -ex quit a.out
Reading symbols from a.out...done.
Breakpoint 1 at 0x4004e7: file c.c, line 6.
Starting program: /tmp/a.out
Breakpoint 1, main () at c.c:6
6 return 0;
$1 = 61440 u''
$2 = 4026531840 U'\xf0000000'
Continuing.
[Inferior 1 (process 1258) exited normally]
tmp$ g++ c.c -g
tmp$ gdb -q -ex "br 6" -ex run -ex "p u16" -ex "p u32" -ex cont -ex quit a.out
Reading symbols from a.out...done.
Breakpoint 1 at 0x4005a7: file c.c, line 6.
Starting program: /tmp/a.out
Breakpoint 1, main () at c.c:6
6 return 0;
$1 = -4096 u''
$2 = -268435456 U'\xf0000000'
Continuing.
[Inferior 1 (process 1276) exited normally]
tmp$ gdb --version
GNU gdb (GDB) Fedora 7.11.1-86.fc24
...
The C++ standard is clear that they're unsigned types:
Types char16_t and char32_t denote distinct types with the same size,
signedness, and alignment as uint_least16_t and uint_least32_t, respectively,
in <cstdint>, called the underlying types.
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
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>From gdb-prs-return-21177-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Mar 28 20:35:21 2017
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From: "brian at ubuntu dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21324] New: gdb hangs when 'thread apply all bt full'
is used
Date: Tue, 28 Mar 2017 20:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21324
Bug ID: 21324
Summary: gdb hangs when 'thread apply all bt full' is used
Product: gdb
Version: unknown
Status: NEW
Severity: critical
Priority: P2
Component: threads
Assignee: unassigned at sourceware dot org
Reporter: brian at ubuntu dot com
Target Milestone: ---
I run a service which does automated retracing of crashes from Ubuntu systems
and discovered that gdb was hanging (using 100% CPU and not returning anything)
when retracing crashes from vim on Ubuntu 16.10.
I can recreate this by running 'thread apply all bt full' (or 'thread apply 3
bt full' in this case) which then prints only the following:
Thread 3 (Thread 0x7ff4636a8700 (LWP 7203)):
I tried using strace on the gdb process but only received:
$ sudo strace -p 16418
strace: Process 16418 attached
strace: [ Process PID=16418 runs in x32 mode. ]
I've seen this behavior with these versions of gdb:
GNU gdb (Ubuntu 7.12.50.20170314-0ubuntu1) 7.12.50.20170314-git
GNU gdb (Ubuntu 7.11.90.20161005-0ubuntu1) 7.11.90.20161005-git
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
I also tried a 7.9 version of gdb and that produced a backtrace.
GNU gdb (Ubuntu 7.9-1ubuntu1) 7.9
The backtrace:
Thread 2 (LWP 3015):
#0 0x00007fe23ecc9ea3 in select () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1 0x00007fe23f27ae48 in time_sleep () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#2 0x00007fe23f353427 in PyEval_EvalFrameEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#3 0x00007fe23f413a74 in _PyEval_EvalCodeWithName.lto_priv.1712 () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#4 0x00007fe23f413b53 in PyEval_EvalCodeEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#5 0x00007fe23f295e25 in function_call.lto_priv () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#6 0x00007fe23f383457 in PyObject_Call () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#7 0x00007fe23f34c3c7 in PyEval_EvalFrameEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#8 0x00007fe23f35364b in PyEval_EvalFrameEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#9 0x00007fe23f35364b in PyEval_EvalFrameEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#10 0x00007fe23f413a74 in _PyEval_EvalCodeWithName.lto_priv.1712 () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#11 0x00007fe23f413b53 in PyEval_EvalCodeEx () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#12 0x00007fe23f295d28 in function_call.lto_priv () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#13 0x00007fe23f383457 in PyObject_Call () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#14 0x00007fe23f3cfb0c in method_call.lto_priv () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#15 0x00007fe23f383457 in PyObject_Call () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#16 0x00007fe23f412577 in PyEval_CallObjectWithKeywords () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#17 0x00007fe23f32c0e2 in t_bootstrap () from
/tmp/apport_sandbox_kH9R1m/usr/lib/x86_64-linux-gnu/libpython3.5m.so.1.0
No symbol table info available.
#18 0x00007fe23ef9a6ca in start_thread (arg=0x7fe23a74f700) at
pthread_create.c:333
__res = <optimized out>
pd = 0x7fe23a74f700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140609620080384,
-1451514129212077889, 0, 140725579832159, 140609620081088, 140609620080384,
1449978205402990783, 1449968195707373759}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0,
0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#19 0x00007fe23ecd40af in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
While I have many different core files that produce this behavior, I don't want
to make them publicly available since it isn't my data. I am happy to any
required debugging.
For completeness here is the full gdb command:
/usr/bin/gdb --ex 'set debug-file-directory
/mnt/sec-machines/apport-sandbox-dir/Ubuntu
16.10/amd64/report-sandbox/usr/lib/debug' --ex 'set solib-absolute-prefix
/mnt/sec-machines/apport-sandbox-dir/Ubuntu 16.10/amd64/report-sandbox' --ex
'add-auto-load-safe-path /mnt/sec-machines/apport-sandbox-dir/Ubuntu
16.10/amd64/report-sandbox' --ex 'set solib-search-path
/mnt/sec-machines/apport-sandbox-dir/Ubuntu
16.10/amd64/report-sandbox/lib/x86_64-linux-gnu' --ex 'file
"/mnt/sec-machines/apport-sandbox-dir/Ubuntu
16.10/amd64/report-sandbox//usr/bin/vim.gtk"' --ex 'core-file
/tmp/apport_core_vx39d9bm'
I used "Critical" for the severity since "Serious" wasn't available.
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>From gdb-prs-return-21178-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 29 02:07:03 2017
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From: "brian at ubuntu dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Wed, 29 Mar 2017 02:07:00 -0000
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--- Comment #1 from brian at ubuntu dot com <brian at ubuntu dot com> ---
I forgot to mention that the first version of gdb with which I received this
hang was GNU gdb (Ubuntu 7.10-1ubuntu2) 7.10 from Ubuntu 15.10.
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>From gdb-prs-return-21179-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Mar 29 02:09:06 2017
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From: "brian at ubuntu dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Wed, 29 Mar 2017 02:09:00 -0000
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brian at ubuntu dot com <brian at ubuntu dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brian at ubuntu dot com
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 29 Mar 2017 13:13:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Hmm, thanks. Should be easy to fix. I see:
/* Allocate a TYPE_CODE_INT type structure associated with GDBARCH.
BIT is the type size in bits. If UNSIGNED_P is non-zero, set
the type's TYPE_UNSIGNED flag. NAME is the type name. */
struct type *
arch_integer_type (struct gdbarch *gdbarch,
int bit, int unsigned_p, const char *name)
{
...
}
static void *
gdbtypes_post_init (struct gdbarch *gdbarch)
{
...
/* Wide character types. */
builtin_type->builtin_char16
= arch_integer_type (gdbarch, 16, 0, "char16_t");
builtin_type->builtin_char32
= arch_integer_type (gdbarch, 32, 0, "char32_t");
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 29 Mar 2017 13:53:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Funny thing is that I can't reproduce here, even with 7.11.1 (FSF).
I suspect that gdb is picking char16_t/char32_t definitions from the debug
info.
What was the compiler versions you used? I tried F23's gcc 5.3.1 and
gcc7/trunk.
Seems like I can only make gdb use those built in types with the "x /s" command
(from looking at commit 9a22f0d0).
Related, I noticed that GDB is not aware that char16_t and char32_t are
built-in types in C++:
$ gdb
[...]
(gdb) set language c++
(gdb) ptype char32_t
No symbol table is loaded. Use the "file" command.
Looks like fixing that requires tweaking c-exp.y.
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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--- Comment #1 from Anatol Pomozov <anatol.pomozov at gmail dot com> ---
I confirm that the issue exists at Arch Linux if I try to compile gdb with
guile 2.2
./guile/scm-ports.c:1097:41: error: invalid use of incomplete type ‘scm_t_port
{aka struct scm_t_port}’
pt->write_end = pt->write_buf + pt->write_buf_size;
^~
In file included from /usr/include/guile/2.2/libguile/fports.h:28:0,
from /usr/include/guile/2.2/libguile.h:57,
from ./guile/guile-internal.h:29,
from ./guile/scm-ports.c:28:
/usr/include/guile/2.2/libguile/ports.h:82:16: note: forward declaration of
‘scm_t_port {aka struct scm_t_port}’
typedef struct scm_t_port scm_t_port;
^~~~~~~~~~
make[2]: *** [Makefile:2537: scm-ports.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/build/avr-gdb/src/gdb-7.12.1/gdb'
make[1]: *** [Makefile:9161: all-gdb] Error 2
make[1]: Leaving directory '/build/avr-gdb/src/gdb-7.12.1'
make: *** [Makefile:850: all] Error 2
Do you plan to port gdb to the new guile API? Is there a workaround that can we
use to prevent this compilation issue?
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Subject: [Bug gdb/21328] New: checkpoint deadlock
Date: Wed, 29 Mar 2017 17:41:00 -0000
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Bug ID: 21328
Summary: checkpoint deadlock
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I've been having this problem often. I set a breakpoint. I then create a
checkpoint when I hit the breakpoint. I execute some, then restart. I try to
create a new checkpoint and gdb spins. If I C-c and backtrace, I see:
(gdb) checkp
^C
Program received signal SIGINT, Interrupt.
0x00002aaab2210aa1 in sys_futex (v3=0, a2=0x0, t=0x7fffffffc960, v=<optimized
out>, o=128, a=0x2aaab2421740 <tcmalloc::Static::pageheap_lock_>) at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/linux_syscall_support.h:2363
2363 int, v3)
The program being debugged was signaled while in a function called from GDB.
GDB remains in the frame where the signal was received.
To change this behavior use "set unwindonsignal on".
Evaluation of the expression containing the function
(fork) will be abandoned.
When the function is done executing, GDB will silently stop.
(gdb) bt
#0 0x00002aaab2210aa1 in sys_futex (v3=0, a2=0x0, t=0x7fffffffc960,
v=<optimized out>, o=128, a=0x2aaab2421740 <tcmalloc::Static::pageheap_lock_>)
at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/linux_syscall_support.h:2363
#1 base::internal::SpinLockDelay (w=0x2aaab2421740
<tcmalloc::Static::pageheap_lock_>, value=2, loop=<optimized out>) at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/spinlock_linux-inl.h:84
#2 0x00002aaab2210864 in SpinLock::SlowLock (this=0x2aaab2421740
<tcmalloc::Static::pageheap_lock_>) at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/spinlock.cc:119
#3 0x00002aaab220bcd5 in SpinLock::Lock (this=0x2aaab2421740
<tcmalloc::Static::pageheap_lock_>) at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/spinlock.h:71
#4 tcmalloc::CentralCacheLockAll () at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/static_vars.cc:57
#5 0x0000003a1a4acc65 in fork () from /lib64/libc.so.6
#6 <function called from gdb>
#7 NMTDecoder::init_profile (this=0x2b93230, name="test",
path="/scratch/usr/jlquinn/profiles/test", filename="profile.param") at
/scratch/usr/jlquinn/itold/mnlp/libmt/src/nmt/NMTDecoder.C:142
#8 0x00002aaaab0ac93d in actII_nmt::init_profile (this=0x2b93180, name="test",
path="/scratch/usr/jlquinn/profiles/test", filename="profile.param", load=true)
at /scratch/usr/jlquinn/itold/mnlp/libmt/src/trlblues/actII_nmt.C:80
#9 0x00002aaaab0e691e in (anonymous namespace)::Trlblues_modular::init_profile
(this=0xf1bba0, name="test") at
/scratch/usr/jlquinn/itold/mnlp/libmt/src/trlblues/trlblues_modular.C:207
#10 0x00002aaaab0e5f00 in (anonymous namespace)::Trlblues_modular::init
(this=0xf1bba0, begin_module="", end_module="") at
/scratch/usr/jlquinn/itold/mnlp/libmt/src/trlblues/trlblues_modular.C:166
#11 0x0000000000436e35 in main (argc=4, argv=0x7fffffffde48) at
/scratch/usr/jlquinn/itold/mnlp/libmt/src/trlblues/trl.C:632
(gdb) c
Continuing.
^C
Program received signal SIGINT, Interrupt.
0x00002aaab2210aa1 in sys_futex (v3=0, a2=0x0, t=0x7fffffffc960, v=<optimized
out>, o=128, a=0x2aaab2421740 <tcmalloc::Static::pageheap_lock_>) at
/scratch/usr/jlquinn/itold/mnlp/libcommon/3rd_party/gperftools-src/src/base/linux_syscall_support.h:2363
2363 int, v3)
I can't move beyond this point. Sometimes I have to restart gdb.
This is CentOS 6.8, gcc 4.4.7. My program has OpenMP enabled but
OMP_NUM_THREADS=1. I also have not reached any omp constructs yet.
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--- Comment #3 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
(In reply to Pedro Alves from comment #2)
> Funny thing is that I can't reproduce here, even with 7.11.1 (FSF).
> I suspect that gdb is picking char16_t/char32_t definitions from the debug
> info.
> What was the compiler versions you used? I tried F23's gcc 5.3.1 and
> gcc7/trunk.
Sorry for not including that info, it didn't seem relevant, beause I get it
with F24's system GCC:
tmp$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/6.3.1/lto-wrapper
Target: x86_64-redhat-linux
Configured with: ../configure --enable-bootstrap
--enable-languages=c,c++,objc,obj-c++,fortran,ada,go,lto --prefix=/usr
--mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared
--enable-threads=posix --enable-checking=release --enable-multilib
--with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions
--enable-gnu-unique-object --enable-linker-build-id
--with-linker-hash-style=gnu --enable-plugin --enable-initfini-array
--disable-libgcj --with-isl --enable-libmpx --enable-gnu-indirect-function
--with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 6.3.1 20161221 (Red Hat 6.3.1-1) (GCC)
tmp$ ~/gcc/latest/bin/g++ -v
Using built-in specs.
COLLECT_GCC=/home/jwakely/gcc/latest/bin/g++
COLLECT_LTO_WRAPPER=/home/jwakely/gcc/7/libexec/gcc/x86_64-pc-linux-gnu/7.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /home/jwakely/src/gcc/gcc/configure
--prefix=/home/jwakely/gcc/7 --with-system-zlib --with-gnu-ld --with-gnu-as
--enable-libstdcxx-debug --disable-maintainer-mode --disable-bootstrap
--disable-libitm --disable-libvtv --disable-libcilkrts
--enable-languages=c,c++,lto --without-isl : (reconfigured) : (reconfigured)
/home/jwakely/src/gcc/gcc/configure --prefix=/home/jwakely/gcc/7
--with-system-zlib --with-gnu-ld --with-gnu-as --enable-libstdcxx-debug
--disable-maintainer-mode --disable-bootstrap --disable-libitm --disable-libvtv
--disable-libcilkrts --without-isl --enable-languages=c,c++,lto --no-create
--no-recursion
Thread model: posix
gcc version 7.0.1 20170328 (experimental) (GCC)
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 29 Mar 2017 17:54:00 -0000
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--- Comment #4 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
Oops, I meant to say I get it with F24's system gcc and also trunk (the two
versions shown in the previous comment).
Ah, but I don't see this with GCC 5.4.1 and earlier:
tmp$ ~/gcc/5.4.0/bin/g++ c.c -g
tmp$ gdb -q -ex "br 6" -ex run -ex "p u16" -ex "p u32" -ex cont -ex quit a.out
Reading symbols from a.out...done.
Breakpoint 1 at 0x400597: file c.c, line 6.
Starting program: /tmp/a.out
Breakpoint 1, main () at c.c:6
6 return 0;
$1 = 61440 u''
$2 = 4026531840 U'\xf0000000'
Continuing.
[Inferior 1 (process 22097) exited normally]
tmp$
tmp$ ~/gcc/6.1.0/bin/g++ c.c -g
tmp$ gdb -q -ex "br 6" -ex run -ex "p u16" -ex "p u32" -ex cont -ex quit a.out
Reading symbols from a.out...done.
Breakpoint 1 at 0x400597: file c.c, line 6.
Starting program: /tmp/a.out
Breakpoint 1, main () at c.c:6
6 return 0;
$1 = -4096 u''
$2 = -268435456 U'\xf0000000'
Continuing.
[Inferior 1 (process 22120) exited normally]
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 29 Mar 2017 18:00:00 -0000
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Ah, I think I tested incorrectly before, because I can reproduce it with g++
trunk now too. Sorry about that.
And the difference between g++ < 6 and >= 6 is simply the default C++ dialect.
I can reproduce it with g++ 5.3.1, as long as I pass -std=gnu++11.
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Subject: [Bug gdb/21335] Support DW_TAG_base_type with no name
Date: Thu, 30 Mar 2017 16:10:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Forgot the reference:
[1] - gcc PR80263 - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80263
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Subject: [Bug gdb/21335] New: Support DW_TAG_base_type with no name
Date: Thu, 30 Mar 2017 16:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21335
Bug ID: 21335
Summary: Support DW_TAG_base_type with no name
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
Target Milestone: ---
In order to address GCC PR80263 (gcc's internal type "sizetype" leaks out as
base type name in the DWARF info) [1], GCC may start emitting base types with
no name, which became valid with DWARF5.
>From page DWARF5, page 103:
A base type entry may have a DW_AT_name attribute whose value
is a null-terminated string containing the name of the base type as
recognized by the programming language of the compilation unit
containing the base type entry.
While in DWARF4 said:
A base type entry has a DW_AT_name attribute whose value is a
null-terminated string containing the name of the base type as
recognized by the programming language of the compilation unit
containing the base type entry.
We need to be sure that GDB supports this correctly before GCC stops emitting
the name.
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Thu, 30 Mar 2017 17:36:00 -0000
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
Fix(es) posted:
https://sourceware.org/ml/gdb-patches/2017-03/msg00529.html
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Subject: [Bug gdb/21272] Missing call to to_can_do_single_step for
arm-none-eabi
Date: Thu, 30 Mar 2017 19:40:00 -0000
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--- Comment #1 from Elouan Appéré <elouan.appere@club-internet.fr> ---
I've submitted a patch:
https://sourceware.org/ml/gdb-patches/2017-03/msg00454.html
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Subject: [Bug gdb/21337] New: [mips] segfault when re-reading symbols with
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Bug ID: 21337
Summary: [mips] segfault when re-reading symbols with remote
debugging.
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Version: unknown
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Priority: P2
Component: gdb
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Reporter: Doug.Gilmore at imgtec dot com
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Created attachment 9955
--> https://sourceware.org/bugzilla/attachment.cgi?id=9955&action=edit
transcript for reproducing problem.
This problem was introduced with commit g3e29f34.
Transcript attached (normal run and run under valgrind).
Will send a patch to gdb-patches.
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>From gdb-prs-return-21194-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 31 08:22:27 2017
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From: "huganle at 163 dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21339] New: got segmentation error when call c function
PyString_FromString() if installed python-dbg
Date: Fri, 31 Mar 2017 08:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21339
Bug ID: 21339
Summary: got segmentation error when call c function
PyString_FromString() if installed python-dbg
Product: gdb
Version: 7.7
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: huganle at 163 dot com
Target Milestone: ---
detail description can be seen from
http://stackoverflow.com/questions/42239848/can-i-call-host-process-function-with-c-string-in-gdb
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>From gdb-prs-return-21195-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 31 08:29:50 2017
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Subject: [Bug python/21339] got segmentation error when call c function
PyString_FromString() if installed python-dbg
Date: Fri, 31 Mar 2017 08:29:00 -0000
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--- Comment #1 from huganle <huganle at 163 dot com> ---
My test enviroment is on debian8 with python2.7.9 and gdb7.7.1
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>From gdb-prs-return-21196-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Mar 31 16:16:26 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21339] got segmentation error when call c function
PyString_FromString() if installed python-dbg
Date: Fri, 31 Mar 2017 16:16:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-03-31
CC| |sergiodj at redhat dot com
Ever confirmed|0 |1
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Hi, thanks for the report.
GDB 7.7.1 is somewhat old. Could you please try to reproduce this bug using
the HEAD revision on our git repository? You can get it from:
git://sourceware.org/git/binutils-gdb.git
Let me know if you need help compiling GDB.
Thanks.
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Subject: [Bug testsuite/8595] environ.exp could run on more platforms
Date: Fri, 31 Mar 2017 17:54:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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Assignee|unasigned at sourceware dot org |sergiodj at redhat dot com
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Patch posted: https://sourceware.org/ml/gdb-patches/2017-03/msg00551.html
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From: "Doug.Gilmore at imgtec dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21337] [mips] segfault when re-reading symbols with remote
debugging.
Date: Fri, 31 Mar 2017 23:17:00 -0000
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--- Comment #1 from Doug Gilmore <Doug.Gilmore at imgtec dot com> ---
Patch sent out for review:
https://sourceware.org/ml/gdb-patches/2017-03/msg00559.html
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>From gdb-prs-return-21199-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Apr 01 08:28:14 2017
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From: "vljubovic at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21341] New: C++ vector elements wrongly evaluated with MI2
Date: Sat, 01 Apr 2017 08:28:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21341
Bug ID: 21341
Summary: C++ vector elements wrongly evaluated with MI2
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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While debugging C++ programs, when options -q --interpreter=mi2 gdb will return
wrong values while inspecting vector elements.
Consider the following simple C++ program (bugdemo.cpp):
#include <iostream>
#include <vector>
int main() {
std::vector<int> v{1,2,3,4}; // test
int x;
std::cin>>x;
std::cout<<"Value of " << x << "-th element is "<<v[x]<<std::endl;
return 0;
}
Compile with: g++ -g --std=c++11 bugdemo.cpp -o bugdemo
Now consider the following simple gdb session (gdb bugdemo):
GNU gdb (GDB) 7.12
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from bugdemo...done.
(gdb) break 7
Breakpoint 1 at 0x400bc1: file main.cpp, line 7.
(gdb) run
Starting program: /rhome/t/test/workspace/TP/T1/Z1/bugdemo
3
Breakpoint 1, main () at main.cpp:7
7 std::cout<<"Value of " << x << "-th element is "<<v[x]<<std::endl;
(gdb) print v[1]
$1 = (__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type &) @0x603014:
2
(gdb) q
A debugging session is active.
Inferior 1 [process 10116] will be killed.
Quit anyway? (y or n) y
So far soo good, everthing seems to work. Now the same session with command
line: gdb -q --interpreter=mi2 bugdemo
=thread-group-added,id="i1"
~"Reading symbols from bugdemo..."
~"done.\n"
(gdb)
-break-insert 8
^done,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000400c1a",func="main()",file="main.cpp",fullname="/rhome/t/test/workspace/TP/T1/Z1/main.cpp",line="8",thread-groups=["i1"],times="0",original-location="/rhome/t/test/workspace/TP/T1/Z1/main.cpp:8"}
(gdb)
-exec-run
=thread-group-started,id="i1",pid="10574"
=thread-created,id="1",group-id="i1"
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1"
^running
*running,thread-id="all"
(gdb)
=library-loaded,id="/usr/lib/x86_64-linux-gnu/libstdc++.so.6",target-name="/usr/lib/x86_64-linux-gnu/libstdc++.so.6",host-name="/usr/lib/x86_64-linux-gnu/libstdc++.so.6",symbols-loaded="0",thread-group="i1"
=library-loaded,id="/lib/x86_64-linux-gnu/libgcc_s.so.1",target-name="/lib/x86_64-linux-gnu/libgcc_s.so.1",host-name="/lib/x86_64-linux-gnu/libgcc_s.so.1",symbols-loaded="0",thread-group="i1"
=library-loaded,id="/lib/x86_64-linux-gnu/libc.so.6",target-name="/lib/x86_64-linux-gnu/libc.so.6",host-name="/lib/x86_64-linux-gnu/libc.so.6",symbols-loaded="0",thread-group="i1"
=library-loaded,id="/lib/x86_64-linux-gnu/libm.so.6",target-name="/lib/x86_64-linux-gnu/libm.so.6",host-name="/lib/x86_64-linux-gnu/libm.so.6",symbols-loaded="0",thread-group="i1"
3
Value of 3-th element is 4
=breakpoint-modified,bkpt={number="1",type="breakpoint",disp="keep",enabled="y",addr="0x0000000000400c1a",func="main()",file="main.cpp",fullname="/rhome/t/test/workspace/TP/T1/Z1/main.cpp",line="8",thread-groups=["i1"],times="1",original-location="/rhome/t/test/workspace/TP/T1/Z1/main.cpp:8"}
~"\n"
~"Breakpoint 1, main () at main.cpp:8\n"
~"8\t return 0;\n"
*stopped,reason="breakpoint-hit",disp="keep",bkptno="1",frame={addr="0x0000000000400c1a",func="main",args=[],file="main.cpp",fullname="/rhome/t/test/workspace/TP/T1/Z1/main.cpp",line="8"},thread-id="1",stopped-threads="all",core="1"
(gdb)
-data-evaluate-expression v[1]
^done,value="@0x603014"
(gdb)
q
&"q\n"
=thread-exited,id="1",group-id="i1"
=thread-group-exited,id="i1"
Notice the line:
^done,value="@0x603014"
expected result should be:
^done,value="2"
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>From gdb-prs-return-21200-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 00:09:15 2017
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Subject: [Bug gdb/21337] [mips] segfault when re-reading symbols with remote
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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Subject: [Bug gdb/21350] New: ptrace: No such process
Date: Tue, 04 Apr 2017 04:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21350
Bug ID: 21350
Summary: ptrace: No such process
Product: gdb
Version: 7.2
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Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: oshin.khandelwal at amdocs dot com
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> gdb -p <process_id>
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
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<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 13384
ptrace: No such process.
(gdb)
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
What's the bug that you're reporting? What were you expecting to see?
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>From gdb-prs-return-21203-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 09:31:15 2017
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Subject: [Bug gdb/21350] ptrace: No such process
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--- Comment #2 from oshin.khandelwal at amdocs dot com ---
HI Pedro,
When executing gdb command with process id, the command terminates with "
ptrace: No such process".
We expect to see the details related to the PID mapped in command argument.
OS Version : Red Hat Enterprise Linux Server release 6.4 (Santiago)
GLIBC Version on server are as below,
#rpm -qa | grep -i glibc
glibc-headers-2.12-1.107.el6.x86_64
glibc-devel-2.12-1.107.el6.x86_64
glibc-devel-2.12-1.107.el6.i686
glibc-common-2.12-1.107.el6.x86_64
glibc-2.12-1.107.el6.i686
glibc-2.12-1.107.el6.x86_64
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
From: palves at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Tuesday, April 04, 2017 2:54 PM
To: Oshin Khandelwal <Oshin.Khandelwal@amdocs.com>
Subject: [Bug gdb/21350] ptrace: No such process
https://sourceware.org/bugzilla/show_bug.cgi?id=21350
Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> --- What's the bug
that you're reporting? What were you expecting to see?
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>From gdb-prs-return-21204-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 09:32:50 2017
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Subject: [Bug gdb/21350] ptrace: No such process
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
But does the process with that ID exist?
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>From gdb-prs-return-21205-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 09:37:21 2017
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Subject: [Bug gdb/21350] ptrace: No such process
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--- Comment #4 from oshin.khandelwal at amdocs dot com ---
Hi,
Please refer the below output.
[user]@<server>> psu | grep BL1BTLSOR
[user] 13384 1 1 22:22 ? 00:00:13 bl1BTLServer -n BL1BTLSOR -f
REGULAR
[user] 31135 12301 0 22:37 pts/0 00:00:00 grep BL1BTLSOR
[user]@<server>> gdb -p 13384
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 13384
ptrace: No such process.
(gdb)
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
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Sent: Tuesday, April 04, 2017 9:33 AM
To: Oshin Khandelwal <Oshin.Khandelwal@amdocs.com>
Subject: [Bug gdb/21350] ptrace: No such process
https://sourceware.org/bugzilla/show_bug.cgi?id=21350
--- Comment #3 from Pedro Alves <palves at redhat dot com> --- But does the
process with that ID exist?
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Subject: [Bug gdb/21350] ptrace: No such process
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Pedro Alves <palves at redhat dot com> changed:
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Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
(In reply to oshin.khandelwal from comment #4)
> Hi,
>
> Please refer the below output.
>
> [user]@<server>> psu | grep BL1BTLSOR
> [user] 13384 1 1 22:22 ? 00:00:13 bl1BTLServer -n BL1BTLSOR -f
> REGULAR
Looks like the process is zombie.
"cat /proc/13384/status" would probably show it.
More recent GDBs give a clearer message in this case:
process 13384 is a zombie - the process has already terminated
Tentatively closing. Thanks.
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>From gdb-prs-return-21207-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 10:29:04 2017
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Subject: [Bug gdb/21350] ptrace: No such process
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--- Comment #6 from oshin.khandelwal at amdocs dot com ---
Hi,
Do we expect the same output for sleeping processes as well ?
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
From: palves at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Tuesday, April 04, 2017 3:14 PM
To: Oshin Khandelwal <Oshin.Khandelwal@amdocs.com>
Subject: [Bug gdb/21350] ptrace: No such process
https://sourceware.org/bugzilla/show_bug.cgi?id=21350
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #5 from Pedro Alves <palves at redhat dot com> --- (In reply to
oshin.khandelwal from comment #4)
> Hi,
>
> Please refer the below output.
>
> [user]@<server>> psu | grep BL1BTLSOR
> [user] 13384 1 1 22:22 ? 00:00:13 bl1BTLServer -n BL1BTLSOR -f
> REGULAR
Looks like the process is zombie.
"cat /proc/13384/status" would probably show it.
More recent GDBs give a clearer message in this case:
process 13384 is a zombie - the process has already terminated
Tentatively closing. Thanks.
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>From gdb-prs-return-21208-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 10:44:59 2017
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From: "oshin.khandelwal at amdocs dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21350] ptrace: No such process
Date: Tue, 04 Apr 2017 10:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21350
--- Comment #7 from oshin.khandelwal at amdocs dot com ---
Hi Pedro,
Need an update on this on priority.
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
From: Oshin Khandelwal
Sent: Tuesday, April 04, 2017 3:57 PM
To: 'palves at redhat dot com' <sourceware-bugzilla@sourceware.org>
Subject: RE: [Bug gdb/21350] ptrace: No such process
Hi,
Do we expect the same output for sleeping processes as well ?
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
From: palves at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Tuesday, April 04, 2017 3:14 PM
To: Oshin Khandelwal <Oshin.Khandelwal@amdocs.com>
Subject: [Bug gdb/21350] ptrace: No such process
https://sourceware.org/bugzilla/show_bug.cgi?id=21350
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WORKSFORME
--- Comment #5 from Pedro Alves <palves at redhat dot com> --- (In reply to
oshin.khandelwal from comment #4)
> Hi,
>
> Please refer the below output.
>
> [user]@<server>> psu | grep BL1BTLSOR
> [user] 13384 1 1 22:22 ? 00:00:13 bl1BTLServer -n BL1BTLSOR -f
> REGULAR
Looks like the process is zombie.
"cat /proc/13384/status" would probably show it.
More recent GDBs give a clearer message in this case:
process 13384 is a zombie - the process has already terminated
Tentatively closing. Thanks.
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>From gdb-prs-return-21209-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 10:57:18 2017
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Subject: [Bug gdb/21350] ptrace: No such process
Date: Tue, 04 Apr 2017 10:57:00 -0000
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--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
> Need an update on this on priority.
Please note this is an upstream tracker monitored on a volunteering basis, and
as such priority requests don't mean much here. If you need priority handling,
please file a bug with your vendor (RHEL/Red Hat) in this case.
> Do we expect the same output for sleeping processes as well ?
No.
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>From gdb-prs-return-21210-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 16:11:30 2017
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From: "jcarriere@ausy-group.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21352] New: Command tsave does not support -r argument
Date: Tue, 04 Apr 2017 16:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21352
Bug ID: 21352
Summary: Command tsave does not support -r argument
Product: gdb
Version: 7.11
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: jcarriere@ausy-group.com
Target Milestone: ---
The command tsave, for saving tracepoints to a file, refuses the -r option,
claiming it is not a valid option.
My personal investigation lead me to trace_save_command (in tracepoint.c or
tracefile.c), which has code like this:
for (; *argv; ++argv)
{
if (strcmp (*argv, "-r") == 0)
target_does_save = 1;
if (strcmp (*argv, "-ctf") == 0)
generate_ctf = 1;
else if (**argv == '-')
error (_("unknown option `%s'"), *argv);
else
filename = *argv;
}
I fixed it like this:
for (; *argv; ++argv)
{
if (strcmp (*argv, "-r") == 0)
target_does_save = 1;
else if (strcmp (*argv, "-ctf") == 0)
generate_ctf = 1;
else if (**argv == '-')
error (_("unknown option `%s'"), *argv);
else
filename = *argv;
}
Thank you the GDB team for developing this great piece of software.
Jonathan.
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>From gdb-prs-return-21211-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 04 18:47:22 2017
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Subject: [Bug gdb/13519] [avr][Regression 7.1/7.2/7.3/7.4] disassemble
command attempts to disassemble SRAM rather than program memory
Date: Tue, 04 Apr 2017 18:47:00 -0000
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Eyck Jentzsch <eyck@it-jw.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |eyck@it-jw.com
--- Comment #20 from Eyck Jentzsch <eyck@it-jw.com> ---
Hi,
the submission of the patch to gdb-patches is more than a year old. Is there
any estimate when this patch will become part of the main line?
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>From gdb-prs-return-21212-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 11:37:48 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21350] ptrace: No such process
Date: Wed, 05 Apr 2017 11:37:00 -0000
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--- Comment #9 from oshin.khandelwal at amdocs dot com ---
Hi,
[root@<server> ~]# ps -ef | grep -i bl1BTLServer
[user] 4613 1 0 Apr04 ? 00:00:41 bl1BTLServer -n BL1BTLSOR -f
REGULAR
[user] 10414 1 0 Apr04 ? 00:00:19 bl1BTLServer -n BTLQUOTE -f
REGULAR
root 26465 20983 0 17:05 pts/4 00:00:00 grep -i bl1BTLServer
[root@<server> ~]# cat /proc/4613/status | grep -i state
State: S (sleeping)
[root@<server> ~]# cat /proc/10414/status | grep -i state
State: S (sleeping)
[root@<server> ~]# gdb -p 10414
GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6)
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 10414
ptrace: No such process.
Regards,
Oshin Khandelwal
Global SE&O
IT, Business Technologies Group
Contact : +91-9764073624
Desk: 2091-58406
-----Original Message-----
From: palves at redhat dot com [mailto:sourceware-bugzilla@sourceware.org]
Sent: Tuesday, April 04, 2017 4:27 PM
To: Oshin Khandelwal <Oshin.Khandelwal@amdocs.com>
Subject: [Bug gdb/21350] ptrace: No such process
https://sourceware.org/bugzilla/show_bug.cgi?id=21350
--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
> Need an update on this on priority.
Please note this is an upstream tracker monitored on a volunteering basis, and
as such priority requests don't mean much here. If you need priority handling,
please file a bug with your vendor (RHEL/Red Hat) in this case.
> Do we expect the same output for sleeping processes as well ?
No.
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>From gdb-prs-return-21213-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:02:03 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21350] ptrace: No such process
Date: Wed, 05 Apr 2017 16:02:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #10 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I recommend that you open this bug on Red Hat's bugzilla
(https://bugzilla.redhat.com/enter_bug.cgi?product=Red%20Hat%20Enterprise%20Linux%206)
as this is happening with a GDB that is shipped by RHEL-6.4. This bug cannot
be reproduced by using the latest version of GDB upstream.
Thanks,
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>From gdb-prs-return-21214-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:04:35 2017
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Subject: [Bug c++/21352] Command tsave does not support -r argument
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Hi Jonathan,
Thanks for the report.
Yeah, this is clearly a thinko. I'll push an obvious commit fixing this.
Thanks.
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From: "andrew at ugh dot net.au" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug d/21354] New: can't index a dynamic array
Date: Wed, 05 Apr 2017 16:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21354
Bug ID: 21354
Summary: can't index a dynamic array
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: d
Assignee: unassigned at sourceware dot org
Reporter: andrew at ugh dot net.au
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With a declaration like:
char[] string = "hello";
I can print it:
(gdb) p string
$1 = "hello"
But can't access individual elements:
(gdb) p string[0]
Invalid binary operation specified.
However using .ptr works:
(gdb) p string.ptr[0]
$2 = 104 'h'
I'm compiling using dmd v1.079.0 and using gdb as of
4ac40124eef08045bf99ad9f4fcc277961953109.
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>From gdb-prs-return-21216-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:23:16 2017
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Subject: [Bug d/21355] New: can't slice a dynamic array
Date: Wed, 05 Apr 2017 16:23:00 -0000
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Bug ID: 21355
Summary: can't slice a dynamic array
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With a declaration like:
char[] string = "hello";
I can print it:
(gdb) p string
$1 = "hello"
But can't slice it:
(gdb) p string[0 .. 3]
cannot take slice of non-array
I'm compiling using dmd v1.079.0 and using gdb as of
4ac40124eef08045bf99ad9f4fcc277961953109.
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>From gdb-prs-return-21217-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:27:52 2017
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Subject: [Bug gdb/21352] Command tsave does not support -r argument
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
Component|c++ |gdb
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>From gdb-prs-return-21218-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:32:20 2017
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Subject: [Bug gdb/21352] Command tsave does not support -r argument
Date: Wed, 05 Apr 2017 16:32:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4a596fe20e93109300e841a3d0ee5f198146ab6d
commit 4a596fe20e93109300e841a3d0ee5f198146ab6d
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Wed Apr 5 12:28:30 2017 -0400
Fix PR 21352: Command tsave does not support -r argument
This is an obvious fix for PR 21352. The problem is that the argument
parsing loop is not using an "else if" where it should, and therefore
the '-r' option ends up unrecognized by GDB.
gdb/ChangeLog:
2017-04-05 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21352
* tracefile.c (tsave_command): Fix argument parsing for '-r'
option.
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Subject: [Bug gdb/21352] Command tsave does not support -r argument
Date: Wed, 05 Apr 2017 16:32:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
https://sourceware.org/ml/gdb-patches/2017-04/msg00117.html
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>From gdb-prs-return-21220-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 16:40:35 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
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--- Comment #5 from Yao Qi <qiyao at gcc dot gnu.org> ---
If you start gdb, type "abc" and enter. Does GDB crash?
Can you run gdb in gdb or other debugger, and capture the stack backtrace on
crash?
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Subject: [Bug gdb/21352] Command tsave does not support -r argument
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0ad9d8c73486e60c5a4963c1b7a0ea7063d69cd2
commit 0ad9d8c73486e60c5a4963c1b7a0ea7063d69cd2
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Wed Apr 5 12:43:52 2017 -0400
PR 21352: Add testsuite for "tsave -r" command
This commit adds a test for the fix of PR 21352.
gdb/testsuite/ChangeLog:
2017-04-05 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21352
* gdb.trace/tsv.exp: Add test for "tsave -r".
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>From gdb-prs-return-21222-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 17:19:25 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Wed, 05 Apr 2017 17:19:00 -0000
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--- Comment #6 from tcurdt at vafer dot org ---
Yes, that also crashes:
$ arm-none-eabi-gdb
GNU gdb (GNU Tools for ARM Embedded Processors) 7.12.0.20161204-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-apple-darwin10
--target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) abc
Abort trap: 6
Here is the stacktrace:
$ lldb arm-none-eabi-gdb
(lldb) target create "arm-none-eabi-gdb"
Traceback (most recent call last):
File "<string>", line 1, in <module>
File
"/Applications/Xcode.app/Contents/SharedFrameworks/LLDB.framework/Resources/Python/lldb/__init__.py",
line 98, in <module>
import six
ImportError: No module named six
Traceback (most recent call last):
... many of these ...
Traceback (most recent call last):
File "<string>", line 1, in <module>
NameError: name 'run_one_line' is not defined
...
Current executable set to 'arm-none-eabi-gdb' (x86_64).
(lldb) r
Process 53435 launched: '/usr/local/bin/arm-none-eabi-gdb' (x86_64)
GNU gdb (GNU Tools for ARM Embedded Processors) 7.12.0.20161204-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-apple-darwin10
--target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
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(gdb) abc
Process 53435 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
frame #0: 0x00007fffc65cbd42 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill:
-> 0x7fffc65cbd42 <+10>: jae 0x7fffc65cbd4c ; <+20>
0x7fffc65cbd44 <+12>: movq %rax, %rdi
0x7fffc65cbd47 <+15>: jmp 0x7fffc65c4caf ; cerror_nocancel
0x7fffc65cbd4c <+20>: retq
(lldb) bt all
* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT
* frame #0: 0x00007fffc65cbd42 libsystem_kernel.dylib`__pthread_kill + 10
frame #1: 0x00007fffc66b95bf libsystem_pthread.dylib`pthread_kill + 90
frame #2: 0x00007fffc6531420 libsystem_c.dylib`abort + 129
frame #3: 0x00000001003310a1 arm-none-eabi-gdb`uw_init_context_1 + 88
frame #4: 0x0000000100331498 arm-none-eabi-gdb`_Unwind_RaiseException +
62
frame #5: 0x000000010032f868 arm-none-eabi-gdb`__cxa_throw + 90
frame #6: 0x0000000100231ae5
arm-none-eabi-gdb`throw_exception_cxx(gdb_exception) + 117
frame #7: 0x0000000100231b75 arm-none-eabi-gdb`throw_it(return_reason,
errors, char const*, __va_list_tag*) + 101
frame #8: 0x0000000100231da6 arm-none-eabi-gdb`throw_verror(errors, char
const*, __va_list_tag*) + 22
frame #9: 0x00000001001f4c24 arm-none-eabi-gdb`verror(char const*,
__va_list_tag*) + 20
frame #10: 0x000000010023172c arm-none-eabi-gdb`error(char const*, ...) +
140
frame #11: 0x0000000100333d46 arm-none-eabi-gdb`undef_cmd_error(char
const*, char const*) + 67
frame #12: 0x000000010004454a arm-none-eabi-gdb`lookup_cmd(char const**,
cmd_list_element*, char*, int, int) + 522
frame #13: 0x00000001001f28ef arm-none-eabi-gdb`execute_command(char*,
int) + 175
frame #14: 0x000000010012566c arm-none-eabi-gdb`command_handler(char*) +
108
frame #15: 0x000000010012595a
arm-none-eabi-gdb`command_line_handler(char*) + 58
frame #16: 0x0000000100124bd7
arm-none-eabi-gdb`gdb_rl_callback_handler(char*) + 55
frame #17: 0x0000000100250fa8 arm-none-eabi-gdb`rl_callback_read_char +
328
frame #18: 0x0000000100124b2e
arm-none-eabi-gdb`gdb_rl_callback_read_char_wrapper(void*) + 78
frame #19: 0x00000001001250d0 arm-none-eabi-gdb`stdin_event_handler(int,
void*) + 80
frame #20: 0x0000000100123ef5 arm-none-eabi-gdb`gdb_wait_for_event(int) +
1285
frame #21: 0x0000000100124052 arm-none-eabi-gdb`gdb_do_one_event()
(.part.2) + 114
frame #22: 0x00000001001241c5 arm-none-eabi-gdb`start_event_loop() + 21
frame #23: 0x000000010011dcbb
arm-none-eabi-gdb`captured_command_loop(void*) + 43
frame #24: 0x000000010011af6f arm-none-eabi-gdb`catch_errors(int
(*)(void*), void*, char*, return_mask) + 79
frame #25: 0x000000010011ee2a
arm-none-eabi-gdb`gdb_main(captured_main_args*) + 3194
frame #26: 0x0000000100332e78 arm-none-eabi-gdb`main + 40
frame #27: 0x0000000100000cf4 arm-none-eabi-gdb`start + 52
(lldb)
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>From gdb-prs-return-21223-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 19:21:34 2017
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From: "steve.merritt at intel dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21356] New: value.c:828: internal-error: int
value_contents_bits_eq(const value*, int, const value*, int, int): Assertion
`offset1 + length <= TYPE_LENGTH (val1->enclosing_type) * TARGET_CHAR_BIT'
failed
Date: Wed, 05 Apr 2017 19:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21356
Bug ID: 21356
Summary: value.c:828: internal-error: int
value_contents_bits_eq(const value*, int, const
value*, int, int): Assertion `offset1 + length <=
TYPE_LENGTH (val1->enclosing_type) * TARGET_CHAR_BIT'
failed
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: steve.merritt at intel dot com
Target Milestone: ---
gdb will assert when printing "container_object2" in the attached sample.
value.c:828: internal-error: int value_contents_bits_eq(const value*, int,
const value*, int, int): Assertion `offset1 + length <= TYPE_LENGTH
(val1->enclosing_type) * TARGET_CHAR_BIT' failed.
The use of a typedef in the declaration of one of the fields of the struct
container_struct2 is triggering the issue.
In the attached sample, there are two nearly identical structs,
container_struct1 and container_struct2. The only difference between the two
is the use of a typedef in container_struct2 when declaring one of the fields.
The field (_vla_struct_object2) is a variable length struct.
To reproduce:
> gcc -g vls_assert.c
> gdb a.out
(gdb) b 49
Breakpoint 1 at 0x40095a: file vls_assert.c, line 49.
(gdb) r
Breakpoint 1, vls_factory (n=5) at vls_assert.c:50
50 return;
(gdb) p container_object1
$1 = {_container_member1 = 5, _vla_struct_object1 = {_some_member = 10,
_vla_field = {0, 2, 4, 6, 8}}}
(gdb) p container_object2
$2 = {_container_member2 = 15, _vla_struct_object2 = {_some_member = 0,
_vla_field = {
value.c:828: internal-error: int value_contents_bits_eq(const value*,
int, const value*, int, int): Assertion `offset1 + length <= TYPE_LENGTH
(val1->enclosing_type) * TARGET_CHAR_BIT' failed.
I reproduced the issue with gcc 4.8.3 and gcc 6.3.0 on EL7.0.
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>From gdb-prs-return-21224-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 05 19:22:28 2017
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From: "steve.merritt at intel dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21356] value.c:828: internal-error: int
value_contents_bits_eq(const value*, int, const value*, int, int): Assertion
`offset1 + length <= TYPE_LENGTH (val1->enclosing_type) * TARGET_CHAR_BIT'
failed
Date: Wed, 05 Apr 2017 19:22:00 -0000
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--- Comment #1 from Steve Merritt <steve.merritt at intel dot com> ---
Created attachment 9974
--> https://sourceware.org/bugzilla/attachment.cgi?id=9974&action=edit
assertion reproducer
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From: "jwakely.gcc at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21358] New: Can't list or set breakpoints in
current source file if it is a symlink
Date: Fri, 07 Apr 2017 10:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21358
Bug ID: 21358
Summary: Can't list or set breakpoints in current source file
if it is a symlink
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: jwakely.gcc at gmail dot com
Target Milestone: ---
~$ cd /tmp
tmp$ cat > test.cc
#include <stdio.h>
void f()
{
puts("printy printy printy");
}
int main()
{
f();
}
tmp$ ln -s test.cc link.cc
tmp$ g++ -g link.cc
tmp$ /home/jwakely/gcc/gdb/7.12.1/bin/gdb -nx -ex start -ex "br 5" a.out
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.out...done.
Temporary breakpoint 1 at 0x4005fb: file link.cc, line 10.
Starting program: /tmp/a.out
Temporary breakpoint 1, main () at link.cc:10
10 f();
No line 5 in the current file.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) br 5
No line 5 in the current file.
Make breakpoint pending on future shared library load? (y or [n]) n
(gdb) step
f () at link.cc:5
5 puts("printy printy printy");
(gdb) bt
#0 f () at link.cc:5
#1 0x0000000000400600 in main () at link.cc:10
(gdb) br
Breakpoint 2 at 0x4005ea: file link.cc, line 5.
(gdb) l 5
No line 5 in the current file.
(gdb) l link.cc:5
1 #include <stdio.h>
2
3 void f()
4 {
5 puts("printy printy printy");
6 }
7
8 int main()
9 {
10 f();
(gdb) l test.cc:5
No source file named test.cc.
(gdb)
The backtrace shows the "correct" filename (i.e. the symlink) and setting a
breakpoint on the current line shows "file link.cc, line 5", and setting a
breakpoint at "link.cc:5" works. But "br 5" and "list 5" don't.
(gdb) maint info line-table
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /tmp/test.cc ((struct symtab *) 0x2611cc0)
linetable: ((struct linetable *) 0x265f140):
INDEX LINE ADDRESS
0 4 0x00000000004005e6
1 5 0x00000000004005ea
2 6 0x00000000004005f4
3 9 0x00000000004005f7
4 10 0x00000000004005fb
5 11 0x0000000000400600
6 0 0x0000000000400607
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /usr/lib/gcc/x86_64-redhat-linux/6.3.1/include/stddef.h ((struct symtab
*) 0x2611d00)
linetable: ((struct linetable *) 0x0):
No line table.
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /usr/include/bits/types.h ((struct symtab *) 0x2611d40)
linetable: ((struct linetable *) 0x0):
No line table.
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /usr/include/libio.h ((struct symtab *) 0x2611d80)
linetable: ((struct linetable *) 0x0):
No line table.
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /usr/include/stdio.h ((struct symtab *) 0x2611dc0)
linetable: ((struct linetable *) 0x0):
No line table.
objfile: /tmp/a.out ((struct objfile *) 0x2606bb0)
compunit_symtab: ((struct compunit_symtab *) 0x2611c40)
symtab: /usr/include/bits/sys_errlist.h ((struct symtab *) 0x2611e00)
linetable: ((struct linetable *) 0x0):
No line table.
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21358] Can't list or set breakpoints in current
source file if it is a symlink
Date: Fri, 07 Apr 2017 10:08:00 -0000
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Jonathan Wakely <jwakely.gcc at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|7.11.1 |7.12.1
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Subject: [Bug breakpoints/21358] Can't list or set breakpoints in current
source file if it is a symlink
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https://sourceware.org/bugzilla/show_bug.cgi?id=21358
--- Comment #1 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
Pedro suggested this is related to "set basenames-may-differ" and so might be
by design. I would argue that the user experience is quite poor in that case
though.
Most commands seem pretty clear about what the current file name is:
(gdb) step
f () at link.cc:5
5 puts("printy printy printy");
(gdb) bt
#0 f () at link.cc:5
#1 0x0000000000400600 in main () at link.cc:10
(gdb) br
Breakpoint 2 at 0x4005ea: file link.cc, line 5.
But then suddenly it's no longer that file:
(gdb) l 5
No line 5 in the current file.
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Fri, 07 Apr 2017 13:42:00 -0000
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--- Comment #7 from Yao Qi <qiyao at gcc dot gnu.org> ---
Reproduced on GDB mainline as well.
(gdb) abc
Process 40992 stopped
* thread #1: tid = 0x1f03, 0x00007fff8b71382a libsystem_kernel.dylib`__kill +
10, stop reason = signal SIGABRT
frame #0: 0x00007fff8b71382a libsystem_kernel.dylib`__kill + 10
libsystem_kernel.dylib`__kill + 10:
-> 0x7fff8b71382a: jae 0x00007fff8b713831 ; __kill + 17
0x7fff8b71382c: jmpq 0x00007fff8b714ffc ; cerror
0x7fff8b713831: ret
0x7fff8b713832: nop
(lldb) bt
* thread #1: tid = 0x1f03, 0x00007fff8b71382a libsystem_kernel.dylib`__kill +
10, stop reason = signal SIGABRT
frame #0: 0x00007fff8b71382a libsystem_kernel.dylib`__kill + 10
frame #1: 0x00007fff8ac4ba9c libsystem_c.dylib`abort + 177
frame #2: 0x00000001003774e1 gdb`uw_init_context_1 + 88 at
unwind-dw2.c:1563
frame #3: 0x00000001003778d8 gdb`_Unwind_RaiseException + 62 at
unwind.inc:88
frame #4: 0x000000010033119f gdb`__cxa_throw + 90 at eh_throw.cc:82
frame #5: 0x0000000100124e7d gdb`throw_exception_cxx + 125 at
common-exceptions.c:303
frame #6: 0x0000000100124f15 gdb`throw_it + 101 at common-exceptions.c:317
frame #7: 0x0000000100125156 gdb`throw_verror(errors, char const*,
__va_list_tag*) + 22 at common-exceptions.c:379
frame #8: 0x00000001002633d4 gdb`verror(char const*, __va_list_tag*) + 20
at utils.c:432
frame #9: 0x000000010017594c gdb`error(char const*, ...) + 140 at
errors.c:43
frame #10: 0x000000010037a178 gdb`undef_cmd_error + 86 at cli-decode.c:1464
However, if I remove -static-libgcc from LDFLAGS in GDB build, GDB works fine.
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
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--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
It turns out a libgcc issue. If C++ program is linked with -static-libgcc and
throws exception, it won't be caught.
$ cat test.cpp
int main()
{
try
{
throw 0;
}
catch (...)
{
}
return 0;
}
$ /opt/local/bin/g++ -static-libgcc test.cpp -o test.exe
$ ./test.exe
Abort trap: 6
$ /opt/local/bin/g++ --version
g++ (MacPorts gcc5 5.4.0_0) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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----------------------------------------------------------------------------
CC| |gingold at adacore dot com
Host| |x86_64-apple-darwin10
--- Comment #9 from Yao Qi <qiyao at gcc dot gnu.org> ---
It is not a GDB bug, but GDB on darwin host is broken. Tristan, do you have
some ideas on this issue?
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--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> ---
I would avoid using -gc, as that tells gdb the program is C code, and so not
managed by the D language support.
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>From gdb-prs-return-21234-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Apr 09 00:20:43 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/20367] add further Rust demangling
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--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
I have a patch for this but I haven't been able to find a situation
where it helps.
It doesn't help minimal symbols, because gdb thinks those are always
C++ symbols. There was a gdb bug on file for this, for Java, for a
long time; but it's difficult to argue that it is really a gdb bug
as any fix would seem to involve using debug symbols to interpret
minimal symbol names, which seems like an inversion at least.
(IMO Rust should not use a mangling that is close to
C++, but that's how it is for now.)
On the other hand, for DWARF symbols, the ones that are likely
to be affected are all emitted in a funny way, with names like "{{impl}}"
embedded.
E.g.:
<54> DW_AT_linkage_name: (indirect string, offset: 0x84):
_ZN2bc8{{impl}}4what15__STATIC_FMTSTRE
There's a Rust compiler bug on file for this.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/20367] add further Rust demangling
Date: Sun, 09 Apr 2017 00:22:00 -0000
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--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
Created attachment 9978
--> https://sourceware.org/bugzilla/attachment.cgi?id=9978&action=edit
the patch
the patch; needs a test case
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>From gdb-prs-return-21236-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Apr 09 09:33:49 2017
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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/20367] add further Rust demangling
Date: Sun, 09 Apr 2017 09:33:00 -0000
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----------------------------------------------------------------------------
CC| |mark at klomp dot org
--- Comment #7 from Mark Wielaard <mark at klomp dot org> ---
I think in rust_sniff_from_mangled_name () you need to use the new
rust_is_mangled () or rust_demangle () from libiberty. See the documentation in
demangle.h:
/* Returns non-zero iff MANGLED is a rust mangled symbol. MANGLED must
already have been demangled through cplus_demangle_v3. If this function
returns non-zero then MANGLED can be demangled (in-place) using
RUST_DEMANGLE_SYM. */
extern int
rust_is_mangled (const char *mangled);
/* Demangles SYM (in-place) if RUST_IS_MANGLED returned non-zero for SYM.
If RUST_IS_MANGLED returned zero for SYM then RUST_DEMANGLE_SYM might
replace characters that cannot be demangled with '?' and might truncate
SYM. After calling RUST_DEMANGLE_SYM SYM might be shorter, but never
larger. */
extern void
rust_demangle_sym (char *sym);
/* Demangles MANGLED if it was GNU_V3 and then RUST mangled, otherwise
returns NULL. Uses CPLUS_DEMANGLE_V3, RUST_IS_MANGLED and
RUST_DEMANGLE_SYM. Returns a new string that is owned by the caller. */
extern char *
rust_demangle (const char *mangled, int options);
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Subject: [Bug rust/20367] add further Rust demangling
Date: Sun, 09 Apr 2017 13:35:00 -0000
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--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
Wow, thanks Mark. I'm glad you pointed that out, I had totally missed it.
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>From gdb-prs-return-21238-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Apr 09 18:55:02 2017
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From: "HBBroeker@T-Online.de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug win32/21365] New: windows-nat.c compilation fails: no
constructor for ptid_t
Date: Sun, 09 Apr 2017 18:55:00 -0000
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Bug ID: 21365
Summary: windows-nat.c compilation fails: no constructor for
ptid_t
Product: gdb
Version: HEAD
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This commit:
commit 436252de3e9de546001c4312d0863ce7e10aa200
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Thu Apr 6 23:29:53 2017 -0400
Class-ify ptid_t
breaks the compilation on Cygwin64 / GCC 5.4.0:
../../binutils-gdb/gdb/windows-nat.c: In Funktion »void
windows_detach(target_ops*, const char*, int)«:
../../binutils-gdb/gdb/windows-nat.c:1915:20: Fehler: Umwandlung in »ptid_t«
von Initialisierungsliste würde expliziten Konstruktor »constexpr
ptid_t::ptid_t(int, long int, long int)« verwenden
ptid_t ptid = {-1};
[Sorry about the messages in German: they're saying that {-1} is not a valid
initializer for ptid_t]
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>From gdb-prs-return-21239-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Apr 09 19:53:43 2017
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From: "dwjbosman at yahoo dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21366] New: Python script causes GDB core dump
Date: Sun, 09 Apr 2017 19:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21366
Bug ID: 21366
Summary: Python script causes GDB core dump
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
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When I run the following script in GDB:
<pre>
import sys
import os
import zmq
c = zmq.Context.instance()
s = c.socket(zmq.ROUTER)
print(s)
s.bind_to_random_port("tcp://127.0.0.1")
print("works")
sys.exit(0)
</pre>
with
arm-none-eabi-gdb --command test.py
GDB crashes with a core dump:
I cloned the Git repository:
commit 5e8bf44f4c94d430ac21257a1a953cfccd2ce79b crashes
I have done a binary search over the git repository:
commit 5809899dad253e2fefcb6f7ae57a6f43cfa4e3c5 and onwards crashes
commit 3e25a500a1ba05587389737e7c617e5ae6dd2bcf and before work
gdb was configured as follows:
This GDB was configured as follows:
configure --host=x86_64-pc-linux-gnu --target=arm-none-eabi
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/special/tmp/share/gdb (relocatable)
--with-jit-reader-dir=/usr/special/tmp/lib/gdb (relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/opt/conda/envs/gdb_ipykernel
--without-guile
--with-separate-debug-dir=/usr/special/tmp/lib/debug (relocatable)
--without-babeltrace
My build command:
cd binutils-gdb && export LDFLAGS=-L/opt/conda/envs/gdb_ipykernel/lib/ &&
./configure --target=arm-none-eabi --prefix=/usr/special/tmp
--with-python=/opt/conda/envs/gdb_ipykernel/bin/
python && make && make tooldir=/usr/special/tmp install
python version is python 3.5.2
ZMQ:
python -c 'import zmq; print(zmq.zmq_version(), zmq.__version__)'
4.1.6 16.0.2
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>From gdb-prs-return-21240-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Apr 09 19:55:48 2017
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Subject: [Bug python/21366] Python script causes GDB core dump
Date: Sun, 09 Apr 2017 19:55:00 -0000
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Dinne Bosman <dwjbosman at yahoo dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm-none-eabi
CC| |dwjbosman at yahoo dot com
Host| |x86_64-pc-linux-gnu
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>From gdb-prs-return-21241-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Apr 10 11:10:34 2017
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From: "arnez at linux dot vnet.ibm.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
big-endian targets
Date: Mon, 10 Apr 2017 11:10:00 -0000
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--- Comment #3 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
I've posted an updated version of the fix among some other DWARF piece handling
fixes:
https://sourceware.org/ml/gdb-patches/2017-04/msg00180.html
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21364] Dead code due to an unreachable condition in
osdata.c
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https://sourceware.org/bugzilla/show_bug.cgi?id=21364
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Component|binutils |gdb
Version|2.29 (HEAD) |HEAD
Resolution|WONTFIX |---
Product|binutils |gdb
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
Moving to gdb.
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Subject: [Bug threads/19942] AddressSanitizer: heap-use-after-free in
thread_apply_all_command
Date: Mon, 10 Apr 2017 13:41:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=803bdfe43083475c7df3db38dc96f4e20d05457d
commit 803bdfe43083475c7df3db38dc96f4e20d05457d
Author: Yao Qi <yao.qi@linaro.org>
Date: Mon Apr 10 14:39:41 2017 +0100
Don't delete thread_info if refcount isn't zero
I build GDB with asan, and run test case hook-stop.exp, and
threadapply.exp,
I got the following asan error,
=================================================================^M
^[[1m^[[31m==2291==ERROR: AddressSanitizer: heap-use-after-free on address
0x6160000999c4 at pc 0x000000826022 bp 0x7ffd28a8ff70 sp 0x7ffd28a8ff60^M
^[[1m^[[0m^[[1m^[[34mREAD of size 4 at 0x6160000999c4 thread T0^[[1m^[[0m^M
#0 0x826021 in release_stop_context_cleanup
../../binutils-gdb/gdb/infrun.c:8203^M
#1 0x72798a in do_my_cleanups
../../binutils-gdb/gdb/common/cleanups.c:154^M
#2 0x727a32 in do_cleanups(cleanup*)
../../binutils-gdb/gdb/common/cleanups.c:176^M
#3 0x826895 in normal_stop() ../../binutils-gdb/gdb/infrun.c:8381^M
#4 0x815208 in fetch_inferior_event(void*)
../../binutils-gdb/gdb/infrun.c:4011^M
#5 0x868aca in inferior_event_handler(inferior_event_type, void*)
../../binutils-gdb/gdb/inf-loop.c:44^M
....
^[[1m^[[32m0x6160000999c4 is located 68 bytes inside of 568-byte region
[0x616000099980,0x616000099bb8)^M
^[[1m^[[0m^[[1m^[[35mfreed by thread T0 here:^[[1m^[[0m^M
#0 0x7fb0bc1312ca in __interceptor_free
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x982ca)^M
#1 0xb8c62f in xfree(void*)
../../binutils-gdb/gdb/common/common-utils.c:100^M
#2 0x83df67 in free_thread ../../binutils-gdb/gdb/thread.c:207^M
#3 0x83dfd2 in init_thread_list() ../../binutils-gdb/gdb/thread.c:223^M
#4 0x805494 in kill_command ../../binutils-gdb/gdb/infcmd.c:2595^M
....
Detaching from program:
/home/yao.qi/SourceCode/gnu/build-with-asan/gdb/testsuite/outputs/gdb.threads/threadapply/threadapply,
process 2399^M
=================================================================^M
^[[1m^[[31m==2387==ERROR: AddressSanitizer: heap-use-after-free on address
0x6160000a98c0 at pc 0x00000083fd28 bp 0x7ffd401c3110 sp 0x7ffd401c3100^M
^[[1m^[[0m^[[1m^[[34mREAD of size 4 at 0x6160000a98c0 thread T0^[[1m^[[0m^M
#0 0x83fd27 in thread_alive ../../binutils-gdb/gdb/thread.c:741^M
#1 0x844277 in thread_apply_all_command
../../binutils-gdb/gdb/thread.c:1804^M
....
^M
^[[1m^[[32m0x6160000a98c0 is located 64 bytes inside of 568-byte region
[0x6160000a9880,0x6160000a9ab8)^M
^[[1m^[[0m^[[1m^[[35mfreed by thread T0 here:^[[1m^[[0m^M
#0 0x7f59a7e322ca in __interceptor_free
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x982ca)^M
#1 0xb8c62f in xfree(void*)
../../binutils-gdb/gdb/common/common-utils.c:100^M
#2 0x83df67 in free_thread ../../binutils-gdb/gdb/thread.c:207^M
#3 0x83dfd2 in init_thread_list() ../../binutils-gdb/gdb/thread.c:223^M
This patch fixes the issue by deleting thread_info object if it is
deletable, otherwise, mark it as exited (by set_thread_exited).
Function set_thread_exited is shared from delete_thread_1. This patch
also moves field "refcount" to private and methods incref and
decref. Additionally, we stop using "ptid_t" in
"struct current_thread_cleanup" to reference threads, instead we use
"thread_info" directly. Due to this change, we don't need
restore_current_thread_ptid_changed anymore.
gdb:
2017-04-10 Yao Qi <yao.qi@linaro.org>
PR gdb/19942
* gdbthread.h (thread_info::deletable): New method.
(thread_info::incref): New method.
(thread_info::decref): New method.
(thread_info::refcount): Move it to private.
* infrun.c (save_stop_context): Call inc_refcount.
(release_stop_context_cleanup): Likewise.
* thread.c (set_thread_exited): New function.
(init_thread_list): Delete "tp" only it is deletable, otherwise
call set_thread_exited.
(delete_thread_1): Call set_thread_exited.
(current_thread_cleanup) <inferior_pid>: Remove.
<thread>: New field.
(restore_current_thread_ptid_changed): Removed.
(do_restore_current_thread_cleanup): Adjust.
(restore_current_thread_cleanup_dtor): Don't call
find_thread_ptid.
(set_thread_refcount): Use dec_refcount.
(make_cleanup_restore_current_thread): Adjust.
(thread_apply_all_command): Call inc_refcount.
(_initialize_thread): Don't call
observer_attach_thread_ptid_changed.
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Subject: [Bug threads/19942] AddressSanitizer: heap-use-after-free in
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
Target Milestone|--- |8.0
--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
Close.
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Subject: [Bug gdb/21364] Dead code due to an unreachable condition in
osdata.c
Date: Mon, 10 Apr 2017 16:46:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a5bef50fdbfadbc6b8911b458580ee91cbfcdafd
commit a5bef50fdbfadbc6b8911b458580ee91cbfcdafd
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Mon Apr 10 12:43:44 2017 -0400
Fix PR gdb/21364: Dead code due to an unreachable condition in osdata.c
Pedro's recent commits enabling -Wwrite-strings has changed a bit the
logic of info_osdata. Now, 'type' is always non-NULL, so we have to
check if it's an empty string instead of NULL. One of the checks was
fixed, but there is another that was left behind. This commit fixes
it.
gdb/ChangeLog:
2017-04-10 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21364
* osdata.c (info_osdata): Check if 'type' is an empty string
instead of NULL.
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Subject: [Bug gdb/21364] Dead code due to an unreachable condition in
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Date: Mon, 10 Apr 2017 16:47:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |sergiodj at redhat dot com
Resolution|--- |FIXED
--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed, thanks.
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21366] Python script causes GDB core dump
Date: Mon, 10 Apr 2017 20:57:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2017-04-10
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the bug report.
Could you please recompile GDB using '-O0 -g3' as CFLAGS/CXXFLAGS, and then let
us know more information about the core dump being generated? A backtrace
would be really helpful.
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Subject: [Bug win32/21365] windows-nat.c compilation fails: no constructor
for ptid_t
Date: Mon, 10 Apr 2017 21:24:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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Last reconfirmed| |2017-04-10
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I can't reproduce this bug when compiling with a MingW compiler. Also, you're
using a somewhat older compiler; could you try updating your GCC to a newer
version? My guess is that this is the problem.
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From: "HBBroeker@T-Online.de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug win32/21365] windows-nat.c compilation fails: no constructor
for ptid_t
Date: Mon, 10 Apr 2017 22:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21365
--- Comment #2 from HBBroeker@T-Online.de ---
(In reply to Sergio Durigan Junior from comment #1)
> I can't reproduce this bug when compiling with a MingW compiler. Also,
> you're using a somewhat older compiler; could you try updating your GCC to a
> newer version? My guess is that this is the problem.
Well, looks like someone else could reproduce it on MingW32. Simon Marchi
addressed this by commit 8473b4472dce9ce87aaad35ff8e975e1487f914e
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug win32/21365] windows-nat.c compilation fails: no constructor
for ptid_t
Date: Tue, 11 Apr 2017 00:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21365
Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Oh, so that's why I wasn't able to reproduce: I was already using the latest
GDB.
Anyway, I'm closing this report then.
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From: "dwjbosman at yahoo dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21366] Python script causes GDB core dump
Date: Tue, 11 Apr 2017 09:58:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21366
--- Comment #2 from Dinne Bosman <dwjbosman at yahoo dot com> ---
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/special/tmp/bin/arm-none-eabi-gdb --command
test_error.py'.
(test_error.py is the following program:
import sys
import os
import zmq
c = zmq.Context.instance()
s = c.socket(zmq.ROUTER)
print(s)
s.bind_to_random_port("tcp://127.0.0.1")
print("works")
sys.exit(0)
)
Program terminated with signal SIGABRT, Aborted.
The backtrace of commit 5809899dad253e2fefcb6f7ae57a6f43cfa4e3c5:
#0 0x00007f3d64eeb067 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f3d64eec448 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f3d6349ef78 in _Unwind_SetGR (context=<optimized out>,
index=<optimized out>, val=<optimized out>) at
/gcc-build/libgcc/unwind-dw2.c:271
#3 0x00007f3d63734c62 in __gxx_personality_v0 () from
/opt/conda/envs/gdb_ipykernel/lib/libstdc++.so.6
#4 0x00000000008bd653 in _Unwind_RaiseException_Phase2 ()
#5 0x00000000008bde97 in _Unwind_Resume ()
#6 0x0000000000892b0a in std::ostreambuf_iterator<char, std::char_traits<char>
> std::num_put<char, std::ostreambuf_iterator<char, std::char_traits<char> >
>::_M_insert_int<unsigned long>(std::ostreambuf_iterator<char,
std::char_traits<char> >, std::ios_base&, char, unsigned long) const ()
#7 0x0000000000892b1d in std::num_put<char, std::ostreambuf_iterator<char,
std::char_traits<char> > >::do_put(std::ostreambuf_iterator<char,
std::char_traits<char> >, std::ios_base&, char, unsigned long) const ()
#8 0x00007f3d637b18ea in std::ostream& std::ostream::_M_insert<unsigned
long>(unsigned long) () from /opt/conda/envs/gdb_ipykernel/lib/libstdc++.so.6
#9 0x00007f3d63aab1e9 in operator<< (__n=0, this=<optimized out>) at
/usr/include/c++/4.9/ostream:185
#10 zmq::tcp_address_t::to_string (this=this@entry=0x16b5f60, addr_=...) at
src/tcp_address.cpp:523
#11 0x00007f3d63aae04d in zmq::tcp_listener_t::set_address
(this=this@entry=0x16b5c20, addr_=<optimized out>) at src/tcp_listener.cpp:222
#12 0x00007f3d63aa0680 in zmq::socket_base_t::bind (this=0x16b55b0,
addr_=addr_@entry=0x7f3d64ab13d0 "tcp://127.0.0.1:*") at
src/socket_base.cpp:407
#13 0x00007f3d63ab34c9 in zmq_bind (s_=<optimized out>,
addr_=addr_@entry=0x7f3d64ab13d0 "tcp://127.0.0.1:*") at src/zmq.cpp:305
#14 0x00007f3d62c4e864 in __pyx_pf_3zmq_7backend_6cython_6socket_6Socket_12bind
(__pyx_v_addr=0x7f3d64ab13b0, __pyx_v_self=0x7f3d62c0ffa8) at
zmq/backend/cython/socket.c:5433
#15 __pyx_pw_3zmq_7backend_6cython_6socket_6Socket_13bind
(__pyx_v_self=0x7f3d62c0ffa8, __pyx_v_addr=<optimized out>) at
zmq/backend/cython/socket.c:5294
#16 0x00007f3d6328d696 in __Pyx_CyFunction_CallMethod (kw=<optimized out>,
arg=0x7f3d64d10c18, self=0x7f3d62c0ffa8, func=0x7f3d649ebb10) at
zmq/backend/cython/error.c:1965
#17 __Pyx_CyFunction_CallAsMethod (func=0x7f3d649ebb10, args=<optimized out>,
kw=<optimized out>) at zmq/backend/cython/error.c:2004
#18 0x00007f3d65a04236 in PyObject_Call (func=0x7f3d649ebb10, arg=<optimized
out>, kw=<optimized out>) at Objects/abstract.c:2165
#19 0x00007f3d65ade314 in do_call (nk=<optimized out>, na=2,
pp_stack=0x7ffcbc5fe2e8, func=0x7f3d649ebb10) at Python/ceval.c:4936
#20 call_function (oparg=<optimized out>, pp_stack=0x7ffcbc5fe2e8) at
Python/ceval.c:4732
#21 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at
Python/ceval.c:3236
#22 0x00007f3d65ae1b49 in _PyEval_EvalCodeWithName (_co=<optimized out>,
globals=<optimized out>, locals=<optimized out>, args=<optimized out>,
argcount=2, kws=0x7f3d64db6ba8, kwcount=0, defs=0x7f3d62c394e0, defcount=3,
kwdefs=0x0, closure=0x0, name=0x7f3d64a5d348, qualname=0x7f3d62c29df0) at
Python/ceval.c:4018
#23 0x00007f3d65ae0df5 in fast_function (nk=<optimized out>, na=2, n=<optimized
out>, pp_stack=0x7ffcbc5fe508, func=0x7f3d62c3c0d0) at Python/ceval.c:4813
#24 call_function (oparg=<optimized out>, pp_stack=0x7ffcbc5fe508) at
Python/ceval.c:4730
#25 PyEval_EvalFrameEx (f=<optimized out>, throwflag=<optimized out>) at
Python/ceval.c:3236
#26 0x00007f3d65ae1b49 in _PyEval_EvalCodeWithName (_co=<optimized out>,
globals=<optimized out>, locals=<optimized out>, args=<optimized out>,
argcount=0, kws=0x0, kwcount=0, defs=0x0, defcount=0, kwdefs=0x0, closure=0x0,
name=0x0, qualname=0x0) at Python/ceval.c:4018
#27 0x00007f3d65ae1cd8 in PyEval_EvalCodeEx (_co=<optimized out>,
globals=<optimized out>, locals=<optimized out>, args=<optimized out>,
argcount=<optimized out>, kws=<optimized out>, kwcount=0, defs=0x0, defcount=0,
kwdefs=0x0, closure=0x0) at Python/ceval.c:4039
#28 0x00007f3d65ae1d1b in PyEval_EvalCode (co=<optimized out>,
globals=<optimized out>, locals=<optimized out>) at Python/ceval.c:777
#29 0x00007f3d65b07020 in run_mod (arena=0x15bcfb0, flags=0x0,
locals=0x7f3d64e63248, globals=0x7f3d64e63248, filename=0x7f3d6499b3b0,
mod=0x15f73f0) at Python/pythonrun.c:976
#30 PyRun_FileExFlags (fp=0x15bcd10, filename_str=<optimized out>,
start=<optimized out>, globals=0x7f3d64e63248, locals=0x7f3d64e63248,
closeit=<optimized out>, flags=0x0) at Python/pythonrun.c:929
#31 0x00007f3d65b08623 in PyRun_SimpleFileExFlags (fp=0x15bcd10,
filename=<optimized out>, closeit=0, flags=0x0) at Python/pythonrun.c:396
#32 0x000000000049192e in python_run_simple_file (file=0x15bcd10,
filename=0x7ffcbc60090e "test_error.py") at ./python/python.c:379
#33 0x0000000000492b50 in gdbpy_source_script (extlang=0x8df9c0
<extension_language_python>, file=0x15bcd10, filename=0x7ffcbc60090e
"test_error.py") at ./python/python.c:911
#34 0x000000000046d5f5 in source_script_from_stream (stream=0x15bcd10,
file=0x7ffcbc60090e "test_error.py", file_to_open=0x7ffcbc60090e
"test_error.py") at ./cli/cli-cmds.c:577
#35 0x000000000046d6e8 in source_script_with_search (file=0x7ffcbc60090e
"test_error.py", from_tty=1, search_path=0) at ./cli/cli-cmds.c:630
#36 0x000000000046d71b in source_script (file=0x7ffcbc60090e "test_error.py",
from_tty=1) at ./cli/cli-cmds.c:640
#37 0x00000000005a9de5 in catch_command_errors_const (command=0x46d6f6
<source_script(char const*, int)>, arg=0x7ffcbc60090e "test_error.py",
from_tty=1) at main.c:402
#38 0x00000000005ab142 in captured_main (data=0x7ffcbc5feaa0) at main.c:1124
#39 0x00000000005ab206 in gdb_main (args=0x7ffcbc5feaa0) at main.c:1161
#40 0x000000000040d43d in main (argc=3, argv=0x7ffcbc5feba8) at gdb.c:32
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Subject: [Bug python/21366] Python script causes GDB core dump
Date: Tue, 11 Apr 2017 10:03:00 -0000
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--- Comment #3 from Dinne Bosman <dwjbosman at yahoo dot com> ---
The diff between the working and next non working commit:
git diff
3e25a500a1ba05587389737e7c617e5ae6dd2bcf..5809899dad253e2fefcb6f7ae57a6f43cfa4e3c5
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index fe3ea42..8c8b18a 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
2016-09-23 Tom Tromey <tom@tromey.com>
+ * break-catch-sig.c: Include <string>.
+ (signal_catchpoint_print_one): Use std::string.
+
+2016-09-23 Tom Tromey <tom@tromey.com>
+
* utils.c (struct restore_ui_out_closure): Remove.
* objfiles.h (terminate_minimal_symbol_table): Don't declare.
diff --git a/gdb/break-catch-sig.c b/gdb/break-catch-sig.c
index 06ee44c..296f900 100644
--- a/gdb/break-catch-sig.c
+++ b/gdb/break-catch-sig.c
@@ -28,7 +28,8 @@
#include "valprint.h"
#include "cli/cli-utils.h"
#include "completer.h"
-#include "gdb_obstack.h"
+
+#include <string>
#define INTERNAL_SIGNAL(x) ((x) == GDB_SIGNAL_TRAP || (x) == GDB_SIGNAL_INT)
@@ -265,11 +266,7 @@ signal_catchpoint_print_one (struct breakpoint *b,
{
int i;
gdb_signal_type iter;
- struct obstack text;
- struct cleanup *cleanup;
-
- obstack_init (&text);
- cleanup = make_cleanup_obstack_free (&text);
+ std::string text;
for (i = 0;
VEC_iterate (gdb_signal_type, c->signals_to_be_caught, i, iter);
@@ -278,12 +275,10 @@ signal_catchpoint_print_one (struct breakpoint *b,
const char *name = signal_to_name_or_int (iter);
if (i > 0)
- obstack_grow (&text, " ", 1);
- obstack_grow (&text, name, strlen (name));
+ text += " ";
+ text += name;
}
- obstack_grow (&text, "", 1);
- do_cleanups (cleanup);iout, "what", (const char *) obstack_base
(&text));--More--
+ ui_out_field_string (uiout, "what", text.c_str ());
}
else
ui_out_field_string (uiout, "what",
The changes seem minor. So in the non working version I started undoing changes
to see if the modified GDB would work. At the end the change that made the
difference is just the declaration of
std::string text;
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https://sourceware.org/bugzilla/show_bug.cgi?id=21372
Bug ID: 21372
Summary: “Cannot access memory at address” after catch syscall
on Raspbian
Product: gdb
Version: 7.12
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: roman.mescheryakov at gmail dot com
Target Milestone: ---
Created attachment 9983
--> https://sourceware.org/bugzilla/attachment.cgi?id=9983&action=edit
gdb_slave_player-7.7.1.typescript
I’m new to gdb and Linux, so please excuse me if my situation will appear to be
not a bug.
I’m investigating a performance issue with my Python script on a Raspberry Pi
3. It runs official Raspbian operating system that is adaptation of Debian for
Raspberry Pi mini-PC. I need to set catchpoint on a certain system call
(gettimeofday, also tried futex), so the need arises in using gdb and not the
Python debugger.
I installed python2.7-dbg package in order to have Python extensions for gdb:
sudo apt-get install python2.7-dbg
After that I run my script under gdb and issue “catch syscall gettimeofday”,
see gdb_slave_player-7.7.1.typescript file attached. After 1st breakpoint hit
and issuing the “continue” command 2 times, the following error message
appears:
Cannot access memory at address 0x76e3b964
If I examine the /proc/<PID>/maps file, I see that this address is indeed not a
part of my Python’s process address space.
After this error I see that my application is not running. If I issue
“continue” to gdb again, the following message is displayed:
Cannot execute this command while the selected thread is running.
And my script is still not running.
If I run that Python script under gdb without issuing “catch syscall”, the
program works well and gdb doesn’t output any errors.
I suppose this “Cannot access memory at address 0x76e3b964” error is a bug. My
expectation is that after “catch syscall” Python process runs without errors
and breakpoint is hit when corresponding system function is called.
Additional information:
GDB version: GNU gdb (Raspbian 7.7.1+dfsg-5+rpi1) 7.7.1
GDB configuration:
This GDB was configured as follows:
configure --host=arm-linux-gnueabihf --target=arm-linux-gnueabihf
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/share/gdb (relocatable)
--with-jit-reader-dir=/usr/lib/gdb (relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/usr (relocatable)
--with-separate-debug-dir=/usr/lib/debug (relocatable)
--with-system-gdbinit=/etc/gdb/gdbinit
--with-zlib
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
“What compiler (and its version) was used to compile GDB” - I don’t know, I use
GDB preinstalled in Raspbian.
uname -a: Linux s21volnaya5 4.4.50-v7+ #970 SMP Mon Feb 20 19:18:29 GMT 2017
armv7l GNU/Linux
After searching in Internet I found the "Raspbian GDB broken"
(https://www.raspberrypi.org/forums/viewtopic.php?f=33&t=104827&p=1146299#p1146299)
forum post with instructions on how to compile and build newer GDB version on
Raspbian. I tried these steps and succeeded with new GDB version compiling and
installation, but the problem remained the same. See
gdb_slave_player-7.12.typescript file attached.
GDB version: GNU gdb (GDB) 7.12
GDB configuration:
This GDB was configured as follows:
configure --host=armv7l-unknown-linux-gnueabihf
--target=armv7l-unknown-linux-gnueabihf
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/share/gdb (relocatable)
--with-jit-reader-dir=/usr/lib/gdb (relocatable)
--without-libunwind-ia64
--without-lzma
--with-python=/usr (relocatable)
--without-guile
--with-separate-debug-dir=/usr/lib/debug (relocatable)
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
“What compiler (and its version) was used to compile GDB” - My GCC version is:
gcc (Raspbian 4.9.2-10) 4.9.2
I tried reporting this problem to Raspbian developers, see
https://github.com/raspberrypi/linux/issues/1956, but I was told the issue
should be reported to GDB developers. So I report this issue here. Please help!
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--- Comment #1 from Roman M <roman.mescheryakov at gmail dot com> ---
Created attachment 9984
--> https://sourceware.org/bugzilla/attachment.cgi?id=9984&action=edit
gdb_slave_player-7.12.typescript
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Roman M <roman.mescheryakov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #9984|0 |1
is obsolete| |
--- Comment #2 from Roman M <roman.mescheryakov at gmail dot com> ---
Created attachment 9987
--> https://sourceware.org/bugzilla/attachment.cgi?id=9987&action=edit
gdb_slave_player-7.12.typescript (now the full one)
Previously uploaded gdb_slave_player-7.12.typescript was incomplete, uploaded a
full one
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 12 Apr 2017 13:10:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=53e710acd249e1861029b19b7a3d8195e7f28929
commit 53e710acd249e1861029b19b7a3d8195e7f28929
Author: Pedro Alves <palves@redhat.com>
Date: Wed Apr 12 14:00:49 2017 +0100
Fix PR c++/21323: GDB thinks char16_t and char32_t are signed in C++
While the C++ standard says that char16_t and char32_t are unsigned types:
Types char16_t and char32_t denote distinct types with the same size,
signedness, and alignment as uint_least16_t and uint_least32_t,
respectively, in <cstdint>, called the underlying types.
... gdb treats them as signed currently:
(gdb) p (char16_t)-1
$1 = -1 u'\xffff'
There are actually two places in gdb that hardcode these types:
- gdbtypes.c:gdbtypes_post_init, when creating the built-in types,
seemingly used by the "x /s" command (judging from commit 9a22f0d0).
- dwarf2read.c, when reading base types with DW_ATE_UTF encoding
(which is what is used for these types, when compiling for C++11 and
up). Despite the comment, the type created does end up used.
Both places need fixing. But since I couldn't tell why dwarf2read.c
needs to create a new type, I've made it use the per-arch built-in
types instead, so that the types are only created once per arch
instead of once per objfile. That seems to work fine.
While writting the test, I noticed that the C++ language parser isn't
actually aware of these built-in types, so if you try to use them
without a program that uses them, you get:
(gdb) set language c++
(gdb) ptype char16_t
No symbol table is loaded. Use the "file" command.
(gdb) ptype u"hello"
No type named char16_t.
(gdb) p u"hello"
No type named char16_t.
That's fixed by simply adding a couple entries to C++'s built-in types
array in c-lang.c. With that, we get the expected:
(gdb) ptype char16_t
type = char16_t
(gdb) ptype u"hello"
type = char16_t [6]
(gdb) p u"hello"
$1 = u"hello"
gdb/ChangeLog:
2017-04-12 Pedro Alves <palves@redhat.com>
PR c++/21323
* c-lang.c (cplus_primitive_types) <cplus_primitive_type_char16_t,
cplus_primitive_type_char32_t>: New enum values.
(cplus_language_arch_info): Register cplus_primitive_type_char16_t
and cplus_primitive_type_char32_t.
* dwarf2read.c (read_base_type) <DW_ATE_UTF>: If bit size is 16 or
32, use the archtecture's built-in type for char16_t and char32_t,
respectively. Otherwise, fallback to init_integer_type as before,
but make the type unsigned, and issue a complaint.
* gdbtypes.c (gdbtypes_post_init): Make char16_t and char32_t unsigned.
gdb/testsuite/ChangeLog:
2017-04-12 Pedro Alves <palves@redhat.com>
PR c++/21323
* gdb.cp/wide_char_types.c: New file.
* gdb.cp/wide_char_types.exp: New file.
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
Date: Wed, 12 Apr 2017 13:10:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=53375380e934928af133bca69c1e1912c35e9c73
commit 53375380e934928af133bca69c1e1912c35e9c73
Author: Pedro Alves <palves@redhat.com>
Date: Wed Apr 12 14:00:49 2017 +0100
Teach GDB that wchar_t is a built-in type in C++ mode
GDB is currently not aware that wchar_t is a built-in type in C++
mode. This is usually not a problem because the debug info describes
the type, so when you have a program loaded, you don't notice this.
However, if you try expressions involving wchar_t before a program is
loaded, gdb errors out:
(gdb) p (wchar_t)-1
No symbol table is loaded. Use the "file" command.
(gdb) p L"hello"
No type named wchar_t.
(gdb) ptype L"hello"
No type named wchar_t.
This commit teaches gdb about the type. After:
(gdb) p (wchar_t)-1
$1 = -1 L'\xffffffff'
(gdb) p L"hello"
$2 = L"hello"
(gdb) ptype L"hello"
type = wchar_t [6]
Unlike char16_t/char32_t, unfortunately, the underlying type of
wchar_t is implementation dependent, both size and signness. So this
requires adding a couple new gdbarch hooks.
I grepped the GCC code base for WCHAR_TYPE and WCHAR_TYPE_SIZE, and it
seems to me that the majority of the ABIs have a 4-byte signed
wchar_t, so that's what I made the default for GDB too. And then I
looked for which ports have a 16-bit and/or unsigned wchar_t, and made
GDB follow suit.
gdb/ChangeLog:
2017-04-12 Pedro Alves <palves@redhat.com>
PR gdb/21323
* c-lang.c (cplus_primitive_types) <cplus_primitive_type_wchar_t>:
New enum value.
(cplus_language_arch_info): Register cplus_primitive_type_wchar_t.
* gdbtypes.h (struct builtin_type) <builtin_wchar>: New field.
* gdbtypes.c (gdbtypes_post_init): Create the "wchar_t" type.
* gdbarch.sh (wchar_bit, wchar_signed): New per-arch values.
* gdbarch.h, gdbarch.c: Regenerate.
* aarch64-tdep.c (aarch64_gdbarch_init): Override
gdbarch_wchar_bit and gdbarch_wchar_signed.
* alpha-tdep.c (alpha_gdbarch_init): Likewise.
* arm-tdep.c (arm_gdbarch_init): Likewise.
* avr-tdep.c (avr_gdbarch_init): Likewise.
* h8300-tdep.c (h8300_gdbarch_init): Likewise.
* i386-nto-tdep.c (i386nto_init_abi): Likewise.
* i386-tdep.c (i386_go32_init_abi): Likewise.
* m32r-tdep.c (m32r_gdbarch_init): Likewise.
* moxie-tdep.c (moxie_gdbarch_init): Likewise.
* nds32-tdep.c (nds32_gdbarch_init): Likewise.
* rs6000-aix-tdep.c (rs6000_aix_init_osabi): Likewise.
* sh-tdep.c (sh_gdbarch_init): Likewise.
* sparc-tdep.c (sparc32_gdbarch_init): Likewise.
* sparc64-tdep.c (sparc64_init_abi): Likewise.
* windows-tdep.c (windows_init_abi): Likewise.
* xstormy16-tdep.c (xstormy16_gdbarch_init): Likewise.
gdb/testsuite/ChangeLog:
2017-04-12 Pedro Alves <palves@redhat.com>
PR gdb/21323
* gdb.cp/wide_char_types.c: Include <wchar.h>.
(wchar): New global.
* gdb.cp/wide_char_types.exp (wide_char_types_program)
(do_test_wide_char, wide_char_types_no_program, top level): Add
wchar_t testing.
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Subject: [Bug c++/21323] GDB thinks char16_t and char32_t are signed in C++
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |palves at redhat dot com
Target Milestone|--- |8.0
--- Comment #9 from Pedro Alves <palves at redhat dot com> ---
Fixes pushed to master. They'll be in 8.0.
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>From gdb-prs-return-21259-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 14:04:48 2017
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Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
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Joel Brobecker <brobecker at gnat dot com> changed:
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----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
--- Comment #4 from Joel Brobecker <brobecker at gnat dot com> ---
I just built using the current master, using GCC 6.3.1, and it worked fine for
me:
(top-gdb) help foobar
Undefined command: "foobar". Try "help".
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>From gdb-prs-return-21260-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 15:37:34 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
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Joel Brobecker <brobecker at gnat dot com> changed:
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--- Comment #10 from Joel Brobecker <brobecker at gnat dot com> ---
FTR: I tried on Yosemite and El Capitan, using GCC 6.3.1, and had no problems
with exception handling. For instance:
(gdb) help error
Undefined command: "error". Try "help".
(gdb) tar ext :4242
:4242: Operation timed out.
Looks like you just need to find or build a functional compiler?
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Wed, 12 Apr 2017 16:15:00 -0000
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--- Comment #11 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Joel Brobecker from comment #10)
> FTR: I tried on Yosemite and El Capitan, using GCC 6.3.1, and had no
> problems with exception handling. For instance:
>
> (gdb) help error
> Undefined command: "error". Try "help".
> (gdb) tar ext :4242
> :4242: Operation timed out.
>
> Looks like you just need to find or build a functional compiler?
My Mac is 10.7 Lion. Is the GCC you get from MacPort, or built by yourself?
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>From gdb-prs-return-21262-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 16:24:44 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
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--- Comment #12 from Joel Brobecker <brobecker at gnat dot com> ---
It's a version of GCC that we build ourselves.
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>From gdb-prs-return-21263-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 16:29:17 2017
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Subject: [Bug gdb/21240] arm-none-eabi-gdb crashes on start
Date: Wed, 12 Apr 2017 16:29:00 -0000
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--- Comment #13 from tcurdt at vafer dot org ---
FTR:
$ cat > test.cpp
int main()
{
try
{
throw 0;
}
catch (...)
{
}
return 0;
}
^C
$ g++-6 -static-libgcc test.cpp -o foo
$ ./foo
Abort trap: 6
$ g++-6 -v
Using built-in specs.
COLLECT_GCC=g++-6
COLLECT_LTO_WRAPPER=/usr/local/Cellar/gcc/6.3.0_1/libexec/gcc/x86_64-apple-darwin16.4.0/6.3.0/lto-wrapper
Target: x86_64-apple-darwin16.4.0
Configured with: ../configure --build=x86_64-apple-darwin16.4.0
--prefix=/usr/local/Cellar/gcc/6.3.0_1
--libdir=/usr/local/Cellar/gcc/6.3.0_1/lib/gcc/6
--enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-6
--with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr
--with-mpc=/usr/local/opt/libmpc --with-isl=/usr/local/opt/isl
--with-system-zlib --enable-stage1-checking --enable-checking=release
--enable-lto --with-build-config=bootstrap-debug --disable-werror
--with-pkgversion='Homebrew GCC 6.3.0_1'
--with-bugurl=https://github.com/Homebrew/homebrew-core/issues --disable-nls
--enable-multilib --with-native-system-header-dir=/usr/include
--with-sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk
Thread model: posix
gcc version 6.3.0 (Homebrew GCC 6.3.0_1)
on macOS 10.12.4
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>From gdb-prs-return-21264-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 20:49:19 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21381] New: Invalid -var-info-path-expression result with
anonymous union in std::string
Date: Wed, 12 Apr 2017 20:49:00 -0000
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Bug ID: 21381
Summary: Invalid -var-info-path-expression result with
anonymous union in std::string
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
This is rather specific, but it's probably possible to create a smaller test
case.
Test source:
---- 8< ----
#include <string>
int
main ()
{
std::string s;
s = "foo";
return 0;
}
---- >8 ----
compilation line: g++ test.cpp -g3 -O0 -o test
gdb command line: gdb -i mi -nx test
MI commands used:
start
-var-create - * s
-var-list-children var1
-var-list-children var1.private
-var-list-children var1.private.2_anonymous
-var-list-children var1.private.2_anonymous.public
-var-list-children var1.private.2_anonymous.public._M_local_buf
So far everything is fine, it just creates all the variable object children.
Now we try to use -var-info-path-expression on the last one:
-var-info-path-expression var1.private.2_anonymous.public._M_local_buf
^done,path_expr="(()._M_local_buf)"
The returned expression is not valid. It should have been
"((s)._M_local_buf)".
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>From gdb-prs-return-21265-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 12 20:51:20 2017
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To: gdb-prs@sourceware.org
Subject: [Bug mi/21381] Invalid -var-info-path-expression result with
anonymous union in std::string
Date: Wed, 12 Apr 2017 20:51:00 -0000
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--- Comment #1 from Simon Marchi <simon.marchi at ericsson dot com> ---
Versions used:
GNU gdb (GDB) 7.12.50.20170121-git
gcc (GCC) 6.3.1 20170306
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Subject: [Bug mi/21381] Invalid -var-info-path-expression result with
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Marc-Andre Laperle <malaperle at gmail dot com> changed:
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>From gdb-prs-return-21267-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Apr 13 11:30:52 2017
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
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--- Comment #4 from Erik Bray <erik.m.bray+sourceware at gmail dot com> ---
For what it's worth, one small merge conflict aside, this patch solved the
issue for me as well, bison-specificity aside.
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Subject: [Bug threads/13217] thread apply all detach throws a SEGFAULT
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5fd69d0ab2c42d2be0781bf3a5d60e1d5b8d05dc
commit 5fd69d0ab2c42d2be0781bf3a5d60e1d5b8d05dc
Author: Pedro Alves <palves@redhat.com>
Date: Thu Apr 13 16:15:34 2017 +0100
Improve coverage of the PR threads/13217 regression test
- Make sure we end up with no thread selected after the detach.
- Test both "thread apply all" and "thread apply $some_threads", for
completeness.
gdb/ChangeLog:
2017-04-13 Pedro Alves <palves@redhat.com>
PR threads/13217
* gdb.threads/threadapply.exp (thr_apply_detach): New procedure.
(top level): Call it twice, with different thread sets.
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>From gdb-prs-return-21269-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Apr 13 17:20:42 2017
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
Date: Thu, 13 Apr 2017 17:20:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
I couldn't reproduce this with current flex master:
$ flex --version
flex 2.6.4
Looking at the git log, it sound like it was fixed with this:
commit 078b46c69d063aef1715b11348a2871d6036f253
Author: Christos Zoulas <christos@zoulas.com>
AuthorDate: Sun Jan 22 18:34:30 2017 +0100
Commit: Will Estes <westes575@gmail.com>
CommitDate: Mon Jan 23 13:39:49 2017 -0500
Add more defines in the non-reentrant part.
Fix the reentrant part; don't "#define yyfoo yyfoo" because it breaks
code that does #ifndef yywrap ..
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
Date: Thu, 13 Apr 2017 17:34:00 -0000
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
Confirmed, that commit fixes it. AFAICS, there's no official 2.6.4 yet, so
looks like the simplest for now is to just avoid 2.6.3. (Maybe get distros to
backport that flex patch.)
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
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--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
For GDB, switching to -p sounds like a viable option going forward. Also, we
probably need to switch to C++ mode, to avoid ODR violations around the
parsers... Need volunteers. :-)
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Subject: [Bug build/21385] New: windows-nat.c compilation fails: no
declaration for allargs
Date: Thu, 13 Apr 2017 23:24:00 -0000
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Bug ID: 21385
Summary: windows-nat.c compilation fails: no declaration for
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As of commit 7c5ded6a00c4817d56cdf04fbc1969bc33b2a930, windows-nat.c again does
not compile on Cygwin64 (current, GCC-5.4):
../../binutils-gdb/gdb/windows-nat.c: In function 'void
windows_create_inferior(target_ops*, const char*, const string&, char**, int)':
../../binutils-gdb/gdb/windows-nat.c:2478:29: error: 'allargs' was not declared
in this scope
len = mbstowcs (NULL, allargs, 0) + 1;
^
../../binutils-gdb/gdb/windows-nat.c:2496:24: error: 'allargs' was not declared
in this scope
+ mbstowcs (NULL, allargs, 0) + 2;
^
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Subject: [Bug build/21385] windows-nat.c compilation fails: no declaration
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=096c92ddb3a5a959bc638cff3c4ffa0f48a737d7
commit 096c92ddb3a5a959bc638cff3c4ffa0f48a737d7
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Thu Apr 13 21:01:53 2017 -0400
Fix build breakage on Cygwin (PR gdb/21385)
On gdb/windows-nat.c:windows_create_inferior, ALLARGS needs to be
declared independently of the host that we're building for. This
fixes a build breakage on Cygwin.
2017-04-13 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21385
* windows-nat.c (windows_create_inferior): Declare 'allargs'
independently of the host, and fix build breakage on Cygwin.
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/21385] windows-nat.c compilation fails: no declaration
for allargs
Date: Fri, 14 Apr 2017 01:05:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed, thanks.
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>From gdb-prs-return-21275-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Apr 14 18:08:38 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21388] New: Sourcing a file that contains an
"interpreter-exec mi" command screws up the CLI
Date: Fri, 14 Apr 2017 18:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21388
Bug ID: 21388
Summary: Sourcing a file that contains an "interpreter-exec mi"
command screws up the CLI
Product: gdb
Version: HEAD
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Put this in blah.gdb:
interpreter-exec mi "show non-stop"
Then do
(gdb) source blah.gdb
The CLI is screwed up, it's not possible to type.
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>From gdb-prs-return-21276-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Apr 14 19:29:08 2017
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Subject: [Bug mi/21381] Invalid -var-info-path-expression result with
anonymous union in std::string
Date: Fri, 14 Apr 2017 19:29:00 -0000
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--- Comment #2 from Simon Marchi <simon.marchi at ericsson dot com> ---
Created attachment 9994
--> https://sourceware.org/bugzilla/attachment.cgi?id=9994&action=edit
proposed patch
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>From gdb-prs-return-21277-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Apr 14 19:43:39 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21381] Invalid -var-info-path-expression result with
anonymous union in std::string
Date: Fri, 14 Apr 2017 19:43:00 -0000
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--- Comment #3 from Simon Marchi <simon.marchi at ericsson dot com> ---
I think I identified the problem. In c_is_path_expr_parent, we are doing this:
field_name = TYPE_FIELD_NAME (parent_type, var->index);
var->index is the index of the current varobj (a class field) in its parent.
The problem is that the varobj index in its parent doesn't translate directly
to an index in the array of fields of the type of its parent, which is assumed
by the statement above.
That's because while the fields array of the class type looks like this:
[0] public field npos
[1] private field _M_dataplus
[2] private field _M_string_length
[3] private field <anonymous union>
... the varobj tree looks like:
string
public
npos
private
_M_dataplus
_M_string_length
2_anonymous (name given to the anonymous union by gdb)
When calling c_is_path_expr_parent with var = 2_anonymous, var->index is 2
(it's the index in its varobj parent). This index is used to lookup the field
type in the parent's type's field table, which erroneously ends up referring to
_M_string_length. It returns true instead of false, which ends up in an empty
string being used as a path instead of searching higher in the varobj tree for
something that really is a path expression parent.
So, like in cplus_describe_child, we have to iterate on the parent's type's
field table to find the 3rd private field (as in the proposed patch). That
will find the right field.
In cplus_describe_child, we could probably assert that parent_expression is not
empty.
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>From gdb-prs-return-21278-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Apr 17 16:38:52 2017
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From: "malaperle at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug mi/21381] Invalid -var-info-path-expression result with
anonymous union in std::string
Date: Mon, 17 Apr 2017 16:38:00 -0000
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--- Comment #4 from Marc-Andre Laperle <malaperle at gmail dot com> ---
(In reply to Simon Marchi from comment #2)
> Created attachment 9994 [details]
> proposed patch
I tested it and the patch seems to work!
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>From gdb-prs-return-21279-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Apr 17 17:56:43 2017
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From: "robmaher3075 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21392] New: gdbserver unable to interrupt execution of
daemonized processes starting at 7.9
Date: Mon, 17 Apr 2017 17:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21392
Bug ID: 21392
Summary: gdbserver unable to interrupt execution of daemonized
processes starting at 7.9
Product: gdb
Version: 7.9
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: robmaher3075 at gmail dot com
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Created attachment 9996
--> https://sourceware.org/bugzilla/attachment.cgi?id=9996&action=edit
Vagrant Ubuntu 16.04 (ubuntu/xenial64) with gdb 7.11.1 can't halt process
I've been having problems debugging daemonized processes on x86_64 when using a
remote target with gdb -> gdbserver -> [daemon process]. The same setup/debug
procedure works up to and including GDB 7.8.2. Once I jump to any more recent
version (tried 7.9, 7.9.1, 7.10.1, or 7.12.1) gdbserver successfully starts up
and it appears that gdb is initially able to attach to the process, however
once the process is resumed I am no longer able to interrupt its execution with
CTRL-C. After a second CTRL-C gdb responds with "^C^CThe target is not
responding to interrupt requests.
Stop debugging it? (y or n)" and the debug session is no longer useable.
While I've been testing this in our Yocto-based development environment I have
also been able to reproduce this issue when switching between Vagrant Ubuntu
VMs for 14.04 (gdb version 7.7.1) and Ubuntu 16.04 (gdb version 7.11.1).
Steps to reproduce as shown in attached log:
1) start-stop-daemon --start --background --exec /bin/sleep -- 300
2) sudo gdbserver --debug --attach 127.0.0.1:34115 `pidof sleep`
3) gdb
3.1) target remote 127.0.0.1:34115
3.2) c (continue)
3.3) CTRL-C (target fails to halt)
3.4) CTRL-C (target not responding message)
Also I've noticed that some daemons don't seem to be affected by this issue.
After looking at their source it seems that those daemons who fork() once,
setsid(), and continue don't seem to be affected while those that fork(),
setsid(), fork(), and continue will not interrupt as expected.
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>From gdb-prs-return-21280-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Apr 17 17:57:17 2017
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To: gdb-prs@sourceware.org
Subject: [Bug server/21392] gdbserver unable to interrupt execution of
daemonized processes starting at 7.9
Date: Mon, 17 Apr 2017 17:57:00 -0000
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>From gdb-prs-return-21281-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 18 16:50:04 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/20743] can't usefully "continue" due to "ptrace: No
such process" after gdb switches thread (gdb7.11.1 on FreeBSD 11)
Date: Tue, 18 Apr 2017 16:50:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by John Baldwin <jhb@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d56060f08aa4ed5786042a066f62aa8e474cc0fd
commit d56060f08aa4ed5786042a066f62aa8e474cc0fd
Author: John Baldwin <jhb@FreeBSD.org>
Date: Tue Apr 18 09:44:32 2017 -0700
PR threads/20743: Don't attempt to suspend or resume exited threads.
When resuming a native FreeBSD process, ignore exited threads when
suspending/resuming individual threads prior to continuing the process.
gdb/ChangeLog:
PR threads/20743
* fbsd-nat.c (resume_one_thread_cb): Remove.
(resume_all_threads_cb): Remove.
(fbsd_resume): Use ALL_NON_EXITED_THREADS instead of
iterate_over_threads.
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To: gdb-prs@sourceware.org
Subject: [Bug threads/20743] can't usefully "continue" due to "ptrace: No
such process" after gdb switches thread (gdb7.11.1 on FreeBSD 11)
Date: Tue, 18 Apr 2017 16:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20743
--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by John Baldwin
<jhb@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=24b03ea864424cf8482ba07fb074389aa759e592
commit 24b03ea864424cf8482ba07fb074389aa759e592
Author: John Baldwin <jhb@FreeBSD.org>
Date: Tue Apr 18 09:44:32 2017 -0700
PR threads/20743: Don't attempt to suspend or resume exited threads.
When resuming a native FreeBSD process, ignore exited threads when
suspending/resuming individual threads prior to continuing the process.
gdb/ChangeLog:
PR threads/20743
* fbsd-nat.c (resume_one_thread_cb): Remove.
(resume_all_threads_cb): Remove.
(fbsd_resume): Use ALL_NON_EXITED_THREADS instead of
iterate_over_threads.
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From: "raajeshdasari at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21395] New: thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Date: Tue, 18 Apr 2017 16:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21395
Bug ID: 21395
Summary: thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: corefiles
Assignee: unassigned at sourceware dot org
Reporter: raajeshdasari at gmail dot com
Target Milestone: ---
When i tried to attach and detach a multi threaded application on mips64 based
environment, I am noticing gdb crash.
when trying to attach "Couldn't write debug register: No such process." erros
is seen and also after attaching the process, corrupt stack error is noticed in
'bt' command output.
(gdb) bt
#0 0xe7a2046c in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
when trying to detach gdb crash is observed.
gdb -p 13124
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "mips64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Attaching to process 13124
Couldn't write debug register: No such process.
(gdb) quit
A debugging session is active.
Inferior 1 [process 13124] will be detached.
Quit anyway? (y or n) y
/root/distro/work/shared/gdb-7.12.1/gdb/thread.c:1010: internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/root/distro/work/shared/gdb-7.12.1/gdb/thread.c:1010: internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted (core dumped)
[1]+ Stopped ./test
file /usr/bin/gdb
/usr/bin/gdb: ELF 64-bit MSB executable, MIPS, MIPS64 version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.32, not stripped
here is the backtrace of the core file.
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "mips64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/gdb...done.
[New LWP 13272]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `gdb -p 13124'.
Program terminated with signal SIGABRT, Aborted.
#0 __GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:58
58 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 __GI_raise (sig=<optimized out>) at ../sysdeps/unix/sysv/linux/raise.c:58
#1 0x000000ffefdadb2c in __GI_abort () at abort.c:89
#2 0x0000000120301e68 in dump_core () at
/root/distro/work/shared/gdb-7.12.1/gdb/utils.c:561
#3 0x0000000120304ee8 in internal_vproblem (problem=problem@entry=0x1207a3680
<internal_error_problem>, file=<optimized out>, line=<optimized out>,
fmt=<optimized out>, ap=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/utils.c:772
#4 0x0000000120304fc0 in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=<optimized out>)
at /root/distro/work/shared/gdb-7.12.1/gdb/utils.c:798
#5 0x00000001203527c0 in internal_error (file=<optimized out>, line=<optimized
out>, fmt=<optimized out>)
at /root/distro/work/shared/gdb-7.12.1/gdb/common/errors.c:55
#6 0x00000001201ebc50 in is_executing (ptid=...) at
/root/distro/work/shared/gdb-7.12.1/gdb/thread.c:1010
#7 0x0000000120097010 in get_detach_signal (lp=lp@entry=0x120894650) at
/root/distro/work/shared/gdb-7.12.1/gdb/linux-nat.c:1334
#8 0x000000012009847c in detach_one_lwp (lp=lp@entry=0x120894650,
signo_p=signo_p@entry=0x0) at
/root/distro/work/shared/gdb-7.12.1/gdb/linux-nat.c:1420
#9 0x0000000120098640 in detach_callback (lp=lp@entry=0x120894650,
data=data@entry=0x0) at
/root/distro/work/shared/gdb-7.12.1/gdb/linux-nat.c:1489
#10 0x000000012009b590 in iterate_over_lwps (filter=...,
callback=callback@entry=0x1200985d8 <detach_callback(lwp_info*, void*)>,
data=data@entry=0x0)
at /root/distro/work/shared/gdb-7.12.1/gdb/linux-nat.c:984
#11 0x000000012009bbfc in linux_nat_detach (ops=0x120801430, args=0x0,
from_tty=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/linux-nat.c:1511
#12 0x00000001202fe138 in kill_or_detach (inf=inf@entry=0x120884040,
args=args@entry=0xffffe3ebb0) at
/root/distro/work/shared/gdb-7.12.1/gdb/top.c:1540
#13 0x0000000120333134 in iterate_over_inferiors (callback=0x1202fe080
<kill_or_detach(inferior*, void*)>, data=0xffffe3ebb0)
at /root/distro/work/shared/gdb-7.12.1/gdb/inferior.c:397
#14 0x00000001202ffda8 in quit_force (args=<optimized out>, from_tty=<optimized
out>) at /root/distro/work/shared/gdb-7.12.1/gdb/top.c:1655
#15 0x00000001200e61c0 in quit_command (args=0x0, from_tty=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/cli/cli-cmds.c:351
#16 0x00000001200e2ca4 in cmd_func (cmd=0x12087ade0, args=0x0,
from_tty=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/cli/cli-decode.c:1913
#17 0x00000001202feb30 in execute_command (p=<optimized out>,
from_tty=<optimized out>) at /root/distro/work/shared/gdb-7.12.1/gdb/top.c:674
#18 0x00000001201fe7d8 in command_line_handler (rl=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/event-top.c:822
#19 0x00000001201fd1f0 in gdb_rl_callback_handler (rl=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/event-top.c:213
#20 0x0000000120404478 in rl_callback_read_char () at
/root/distro/work/shared/gdb-7.12.1/readline/callback.c:220
#21 0x00000001201fd0a8 in gdb_rl_callback_read_char_wrapper_noexcept () at
/root/distro/work/shared/gdb-7.12.1/gdb/event-top.c:175
#22 0x00000001201fd160 in gdb_rl_callback_read_char_wrapper
(client_data=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/event-top.c:192
#23 0x00000001201fdb00 in stdin_event_handler (error=<optimized out>,
client_data=0x1207e60f0) at
/root/distro/work/shared/gdb-7.12.1/gdb/event-top.c:568
#24 0x00000001201fbb04 in gdb_wait_for_event (block=block@entry=1) at
/root/distro/work/shared/gdb-7.12.1/gdb/event-loop.c:859
#25 0x00000001201fc0b0 in gdb_do_one_event () at
/root/distro/work/shared/gdb-7.12.1/gdb/event-loop.c:347
#26 0x00000001201fc204 in start_event_loop () at
/root/distro/work/shared/gdb-7.12.1/gdb/event-loop.c:371
#27 0x00000001201f4048 in captured_command_loop (data=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/main.c:324
#28 0x00000001201ef47c in catch_errors (func=0x1201f3ff0
<captured_command_loop(void*)>, func_args=<optimized out>,
errstring=0x12056f900 "", mask=<optimized out>)
at /root/distro/work/shared/gdb-7.12.1/gdb/exceptions.c:236
#29 0x00000001201f57ec in captured_main (data=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/main.c:1149
#30 gdb_main (args=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/main.c:1159
#31 0x0000000120069a5c in main (argc=<optimized out>, argv=<optimized out>) at
/root/distro/work/shared/gdb-7.12.1/gdb/gdb.c:32
(gdb)
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From: "raajeshdasari at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21395] thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Date: Tue, 18 Apr 2017 16:54:00 -0000
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raajeshdasari at gmail dot com <raajeshdasari at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |raajeshdasari at gmail dot com
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From: "jhb at FreeBSD dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/20743] can't usefully "continue" due to "ptrace: No
such process" after gdb switches thread (gdb7.11.1 on FreeBSD 11)
Date: Tue, 18 Apr 2017 16:55:00 -0000
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jhb at FreeBSD dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from jhb at FreeBSD dot org ---
Fix committed to master and the 8.0 branch and will appear in 8.0 release.
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From: "raajeshdasari at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21395] thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Date: Thu, 20 Apr 2017 10:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21395
--- Comment #1 from raajeshdasari at gmail dot com <raajeshdasari at gmail dot com> ---
I have added few log messages in mips_linux_new_thread function in
mips-linux-nat.c file .
Added log message inside this "if" block.
if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1)
perror_with_name (_("Couldn't write debug register"));
I see that ptrace call() for one thread is failed and hence "Couldn't write
debug register: No such process" error is seen while trying to attach a multi
threaded application.
I also checked the ERROR code in the failure scenario, error code is ESRCH.
Could someone please look into this and provide some inputs.
Regards,
Rajesh.
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Subject: [Bug corefiles/21395] thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Date: Thu, 20 Apr 2017 11:01:00 -0000
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raajeshdasari at gmail dot com <raajeshdasari at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #2 from raajeshdasari at gmail dot com <raajeshdasari at gmail dot com> ---
I have added few log messages in mips_linux_new_thread function in
mips-linux-nat.c file .
Added log message inside this "if" block.
if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1)
perror_with_name (_("Couldn't write debug register"));
I see that ptrace call() for one thread is failed and hence "Couldn't write
debug register: No such process" error is seen while trying to attach a multi
threaded application.
I also checked the ERROR code in the failure scenario, error code is ESRCH.
Could someone please look into this and provide some inputs.
Regards,
Rajesh.
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Subject: [Bug gdb/21405] New: thread.c:100: internal-error: thread_info*
inferior_thread(): Assertion `tp' failed.
Date: Thu, 20 Apr 2017 17:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21405
Bug ID: 21405
Summary: thread.c:100: internal-error: thread_info*
inferior_thread(): Assertion `tp' failed.
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: ldalessandro at gmail dot com
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Created attachment 10001
--> https://sourceware.org/bugzilla/attachment.cgi?id=10001&action=edit
test case
I'm running into the assertion at:
thread.c:100: internal-error: thread_info* inferior_thread(): Assertion `tp'
failed.
I'm using:
1. gcc-6.3
2. valgrind-svn (r16308)
3. gdb-8.0.50.20170420-git
To reproduce:
1. compile the attached testcase
2. run under valgrind with --vgdb-error=0
3. (in a different shell) launch gdb
4. attach to valgrind as a remote target
5. continue
Trace:
<shell 1>
$ cat hello.cpp
#include <iostream>
#include <thread>
using namespace std;
int main() {
thread([](){ cout << "hello world\n"; }).join();
return 0;
}
$ g++ -pthread -o hello hello.cpp
$ ./hello
hello world
$ valgrind --vgdb-error=0 ./hello
==22111== Memcheck, a memory error detector
==22111== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.
==22111== Using Valgrind-3.13.0.SVN and LibVEX; rerun with -h for copyright
info
==22111== Command: ./hello
==22111==
==22111== (action at startup) vgdb me ...
==22111==
==22111== TO DEBUG THIS PROCESS USING GDB: start GDB like this
==22111== /path/to/gdb ./hello
==22111== and then give GDB the following command
==22111== target remote |
/u/ldalessa/.local/modules/valgrind/HEAD/lib/valgrind/../../bin/vgdb
--pid=22111
==22111== --pid is optional if only one valgrind process is running
==22111==
<shell 2>
$ gdb ./hello
GNU gdb (GDB) 8.0.50.20170420-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./hello...(no debugging symbols found)...done.
(gdb) target remote |
/u/ldalessa/.local/modules/valgrind/HEAD/lib/valgrind/../../bin/vgdb
--pid=22111
Remote debugging using |
/u/ldalessa/.local/modules/valgrind/HEAD/lib/valgrind/../../bin/vgdb
--pid=22111
relaying data between gdb and process 22111
warning: remote target does not support file transfer, attempting to access
files from local filesystem.
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
/usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done.
done.
0x00000000040012d0 in _start () from /lib64/ld-linux-x86-64.so.2
(gdb) c
Continuing.
thread.c:100: internal-error: thread_info* inferior_thread(): Assertion `tp'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
thread.c:100: internal-error: thread_info* inferior_thread(): Assertion `tp'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted (core dumped)
GDB backtrace:
$ gdb `which gdb` core
GNU gdb (GDB) 8.0.50.20170420-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /u/ldalessa/.local/binutils/git/bin/gdb...done.
[New LWP 9856]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `gdb ./hello'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f1022398c37 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) bt
#0 0x00007f1022398c37 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007f102239c028 in __GI_abort () at abort.c:89
#2 0x000000000067b726 in dump_core () at utils.c:465
#3 0x000000000067da88 in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *)
(problem=problem@entry=0xd21160 <internal_error_problem>, file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7fff1fd87608) at
utils.c:676
#4 0x000000000067db49 in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=ap@entry=0x7fff1fd87608) at
utils.c:702
#5 0x000000000059ab52 in internal_error (file=file@entry=0x8db4f7 "thread.c",
line=line@entry=100, fmt=<optimized out>) at common/errors.c:55
#6 0x0000000000670415 in inferior_thread () at thread.c:100
#7 0x00000000004aed4c in tui_on_normal_stop (bs=<optimized out>,
print_frame=<optimized out>) at tui/tui-interp.c:97
#8 0x0000000000609415 in generic_observer_notify (args=0x7fff1fd87720,
subject=<optimized out>) at observer.c:167
#9 observer_notify_normal_stop (bs=bs@entry=0x0, print_frame=<optimized out>)
at observer.inc:61
#10 0x00000000005da1dd in normal_stop () at infrun.c:8373
#11 0x000000000054ab96 in do_my_cleanups (pmy_chain=pmy_chain@entry=0xd1fc80
<cleanup_chain>, old_chain=0x874380 <sentinel_cleanup>) at
common/cleanups.c:154
#12 0x000000000054ad1d in do_cleanups (old_chain=<optimized out>) at
common/cleanups.c:176
#13 0x000000000054ffae in throw_exception_cxx (exception=...) at
common/common-exceptions.c:289
#14 0x0000000000550094 in throw_exception (exception=...) at
common/common-exceptions.c:317
#15 throw_it(return_reason, errors, const char *, typedef __va_list_tag
__va_list_tag *) (reason=reason@entry=RETURN_ERROR, error=<optimized out>,
fmt=<optimized out>, ap=ap@entry=0x7fff1fd87848) at
common/common-exceptions.c:373
#16 0x00000000005502c6 in throw_verror (error=<optimized out>, fmt=<optimized
out>, ap=ap@entry=0x7fff1fd87848) at common/common-exceptions.c:379
#17 0x0000000000550377 in throw_error (error=error@entry=TARGET_CLOSE_ERROR,
fmt=<optimized out>) at common/common-exceptions.c:394
#18 0x0000000000474a33 in readchar (timeout=<optimized out>) at remote.c:8614
#19 0x000000000047544f in getpkt_or_notif_sane_1 (buf=buf@entry=0x19b6040,
sizeof_buf=sizeof_buf@entry=0x19b6048, forever=forever@entry=0,
expecting_notif=expecting_notif@entry=0, is_notif=is_notif@entry=0x0) at
remote.c:9157
#20 0x000000000047e950 in getpkt_sane (forever=0, sizeof_buf=0x19b6048,
buf=0x19b6040) at remote.c:9259
#21 getpkt (forever=0, sizeof_buf=0x19b6048, buf=0x19b6040) at remote.c:9097
#22 remote_pass_signals (numsigs=<optimized out>, pass_signals=0x19feaf0 "",
self=<optimized out>) at remote.c:2036
#23 0x00000000005d61af in do_target_resume (resume_ptid=..., step=0,
sig=GDB_SIGNAL_0) at infrun.c:2369
#24 0x00000000005db87a in resume (sig=GDB_SIGNAL_0) at infrun.c:2760
#25 0x00000000005dc7e3 in keep_going_pass_signal (ecs=ecs@entry=0x7fff1fd87c30)
at infrun.c:7829
#26 0x00000000005dd29b in proceed (addr=<optimized out>, siggnal=<optimized
out>) at infrun.c:3196
#27 0x00000000005d27f7 in continue_command (args=<optimized out>, from_tty=1)
at infcmd.c:862
#28 0x00000000004986b9 in cmd_func (cmd=<optimized out>, args=<optimized out>,
from_tty=<optimized out>) at cli/cli-decode.c:1887
#29 0x0000000000676003 in execute_command (p=<optimized out>, p@entry=0x1bb1b30
"c", from_tty=1) at top.c:674
#30 0x00000000005a2ecc in command_handler (command=0x1bb1b30 "c") at
event-top.c:590
#31 0x00000000005a3198 in command_line_handler (rl=<optimized out>) at
event-top.c:780
#32 0x00000000005a250c in gdb_rl_callback_handler (rl=0x1af9620 "") at
event-top.c:213
#33 0x00000000006b7333 in rl_callback_read_char () at callback.c:220
#34 0x00000000005a244e in gdb_rl_callback_read_char_wrapper_noexcept () at
event-top.c:175
#35 0x00000000005a24b9 in gdb_rl_callback_read_char_wrapper
(client_data=<optimized out>) at event-top.c:192
#36 0x00000000005a29e0 in stdin_event_handler (error=<optimized out>,
client_data=0x1920c30) at event-top.c:518
#37 0x00000000005a185d in gdb_wait_for_event (block=block@entry=1) at
event-loop.c:859
#38 0x00000000005a19c4 in gdb_do_one_event () at event-loop.c:347
#39 0x00000000005a1b35 in gdb_do_one_event () at
./common/common-exceptions.h:221
#40 start_event_loop () at event-loop.c:371
#41 0x00000000005f4d88 in captured_command_loop (data=data@entry=0x0) at
main.c:325
#42 0x00000000005a3aa3 in catch_errors (func=func@entry=0x5f4d60
<captured_command_loop(void*)>, func_args=func_args@entry=0x0,
errstring=errstring@entry=0x8200e2 "", mask=mask@entry=RETURN_MASK_ALL) at
exceptions.c:236
#43 0x00000000005f5cb6 in captured_main (data=0x7fff1fd88000) at main.c:1150
#44 gdb_main (args=args@entry=0x7fff1fd88130) at main.c:1160
#45 0x000000000040e305 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
(gdb)
ref: https://sourceware.org/ml/gdb/2017-04/msg00028.html
ref: https://sourceware.org/bugzilla/show_bug.cgi?id=11362
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From: "ldalessandro at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21405] thread.c:100: internal-error: thread_info*
inferior_thread(): Assertion `tp' failed.
Date: Thu, 20 Apr 2017 17:24:00 -0000
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21406] New: gdb/ada-lex.l: %option noyywrap
Date: Thu, 20 Apr 2017 18:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21406
Bug ID: 21406
Summary: gdb/ada-lex.l: %option noyywrap
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dilyan.palauzov at aegee dot org
Target Milestone: ---
As it was done in the other .l files, please replace int yywrap() in ada-lex.l
with %option noyywrap .
diff --git a/gdb/ada-lex.l b/gdb/ada-lex.l
--- a/gdb/ada-lex.l
+++ b/gdb/ada-lex.l
@@ -78,7 +78,7 @@ static int find_dot_all (const char *);
%}
-%option case-insensitive interactive nodefault
+%option case-insensitive interactive nodefault noyywrap
%s BEFORE_QUAL_QUOTE
@@ -636,12 +636,6 @@ rewind_to_char (int ch)
yyrestart (NULL);
}
-int
-yywrap(void)
-{
- return 1;
-}
-
/* Dummy definition to suppress warnings about unused static definitions. */
typedef void (*dummy_function) ();
dummy_function ada_flex_use[] =
diff --git a/gdb/ada-exp.y b/gdb/ada-exp.y
--- a/gdb/ada-exp.y
+++ b/gdb/ada-exp.y
@@ -721,7 +721,6 @@ primary : '*' primary %prec '.'
#define yy_switch_to_buffer ada_yy_switch_to_buffer
#define yyrestart ada_yyrestart
#define yytext ada_yytext
-#define yywrap ada_yywrap
static struct obstack temp_parse_space;
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From: "LpSolit at netscape dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21007] New: Expose breaking with regular expressions on
the Python API
Date: Fri, 21 Apr 2017 13:06:00 -0000
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Bug ID: 21007
Summary: Expose breaking with regular expressions on the Python
API
Product: gdb
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Assignee: unassigned at sourceware dot org
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Currently you need to shell out:
gdb.execute('rbreak {}'.format(regexp))
but it would be cool if there was a boolean `regular_expression` constructor
argument to `gdb.Breakpoint`.
Looked at docs at:
https://sourceware.org/gdb/current/onlinedocs/gdb/Breakpoints-In-Python.html#Breakpoints-In-Python
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Subject: [Bug build/21057] GDB build failure with flex 2.6.3
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #7)
> For GDB, switching to -p sounds like a viable option going forward. Also,
> we probably need to switch to C++ mode, to avoid ODR violations around the
> parsers... Need volunteers. :-)
I tried yacc -p once, and it was trickier than it seemed like it ought
to have been.
C++ mode is a bison extension AFAIK. I think using it would be very
nice, but I wonder whether it's acceptable.
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From: "vishwanath.patil at pathpartnertech dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21419] New: Unable to list program after loading symbolic
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Date: Sat, 22 Apr 2017 12:43:00 -0000
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Bug ID: 21419
Summary: Unable to list program after loading symbolic table
Product: gdb
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With GDB even after loading symbolic table , gdb unable to list program lines.
It is able to list only if I specify the source code path , setting via "dir"
command.
GDB version 7.8 and 7.12 tried .
program compiled with arm-linux-gnueabi-gcc -g main.c
arch - armV5.
GDB console log
GNU gdb (Linaro GDB) 7.8-2014.09
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-linux-gnueabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://bugs.linaro.org>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.out...done.
(gdb) l
13 main.c: No such file or directory.
(gdb)
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Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
Date: Sat, 22 Apr 2017 12:46:00 -0000
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--- Comment #1 from vishwanath <vishwanath.patil at pathpartnertech dot com> ---
issue is close to this issue ,
http://stackoverflow.com/questions/21928876/gdb-can-not-load-source-file
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>From gdb-prs-return-21295-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Apr 24 08:06:45 2017
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From: "jeanmichael.celerier at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/21424] New: -gsplit-dwarf: top namespace info seems to be
lost in GDB
Date: Mon, 24 Apr 2017 08:06:00 -0000
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Bug ID: 21424
Summary: -gsplit-dwarf: top namespace info seems to be lost in
GDB
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Originally posted in GCC bug tracker:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80490
Given the following code:
main.cpp:
namespace ossia
{
class foo { public: void f() { } };
namespace net
{
class bar { public: void g() { } };
}
}
int main()
{
auto x = new ossia::foo;
auto y = new ossia::net::bar;
x->f();
y->g();
}
And the following invocation :
g++ -ggdb -O0 -gsplit-dwarf -Wl,--gdb-index -fuse-ld=gold main.cpp
Debugging in gdb looks like this :
gdb a.out
b main
> auto x = new ossia::foo;
p x
> $1 = ((anonymous namespace)::foo *) 0x414c20
n
p y
> $2 = ((anonymous namespace)::net::bar *) 0x414c40
Doing
strings a.out | c++filt
seems to yield the correct types, though.
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Subject: [Bug rust/20367] add further Rust demangling
Date: Mon, 24 Apr 2017 09:30:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
CC|mjw at fedoraproject dot org |
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Subject: [Bug python/16486] differences between "bt" and "bt no-filters"
Date: Tue, 25 Apr 2017 03:09:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
FWIW this is still a bit odd.
I ran gdb on itself (just "run" then interrupted when the prompt came up);
and did a bt using the colorizing frame filter from my gdb-helpers project.
With the filter, apparently all one line:
#5 0x00000000007d9de8 in catch_errors(int (*)(void*), void*, char const*,
return_mask) (func=0x84b565 <captured_command_loop(void*)>, func_args=0x0,
errstring=0xf0bafb "", mask=RETURN_MASK_ALL)
Without:
#5 0x00000000007d9de8 in catch_errors (
func=0x84b565 <captured_command_loop(void*)>, func_args=0x0,
errstring=0xf0bafb "", mask=RETURN_MASK_ALL)
at ../../binutils-gdb/gdb/exceptions.c:236
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Subject: [Bug python/16486] differences between "bt" and "bt no-filters"
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
Also I suspect that those wrap_here calls should adjust their arguments
to account for increased indentation in elided frames.
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>From gdb-prs-return-21299-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 25 20:33:01 2017
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Subject: [Bug python/16486] differences between "bt" and "bt no-filters"
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--- Comment #5 from Phil Muldoon <pmuldoon at redhat dot com> ---
Good point on the wrap hints. I have some more time allocated now to look at
Python. I'll take a look at the wrap hints and see what's going on with the
output.
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>From gdb-prs-return-21300-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Apr 25 23:09:39 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/16486] differences between "bt" and "bt no-filters"
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--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Phil Muldoon from comment #5)
> Good point on the wrap hints. I have some more time allocated now to look at
> Python. I'll take a look at the wrap hints and see what's going on with the
> output.
FWIW my patch series from today has a fix for the one spot I noticed.
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>From gdb-prs-return-21301-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 26 04:29:02 2017
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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>From gdb-prs-return-21302-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 26 04:31:35 2017
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
Date: Wed, 26 Apr 2017 04:31:00 -0000
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--- Comment #2 from Simon Marchi <simon.marchi at ericsson dot com> ---
I am not aware of anyone working on this, but contributions are always welcome.
I don't use Guile myself and am not familiar with the concepts, so it would be
difficult for me to do it.
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>From gdb-prs-return-21303-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 26 19:24:35 2017
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Subject: [Bug gdb/21225] Which version of gdb should I use for best
reliability
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Hi there!
I'd like to stress that I'd really appreciate specific suggestions for what
sort of issues impact you the most, and learn more about your use cases.
Filing a bug for each specific issue with a reproducer would be ideal. But
please feel free to send me email offlist too. I'm always interested in
hearing from our users. I have thick skin so feel free to say what you're
really thinking. :-)
As for this bug, I don't think there's anything else we can do here, so I'm
closing it. Thanks for your input.
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>From gdb-prs-return-21304-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Apr 26 22:07:39 2017
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Received: (qmail 103683 invoked by uid 48); 26 Apr 2017 22:07:39 -0000
From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21436] New: frame filter should allow duplicated
underlying frames
Date: Wed, 26 Apr 2017 22:07:00 -0000
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Bug ID: 21436
Summary: frame filter should allow duplicated underlying frames
Product: gdb
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Assignee: unassigned at sourceware dot org
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Currently a frame filter must associate each frame it returns with
some underlying inferior frame. If multiple decorated frames refer
to the same underlying frame, the resulting output from gdb is a bit
funny -- it prints the frame number (like "#5") just once, but otherwise
prints the entire frame multiple times (at each spot it is referenced).
(It's possible this only occurs when the frame is also elided -- I
can't recall right now.)
This problem came up while writing a frame filter that understands
SpiderMonkey interpreter frames. See:
https://bugzilla.mozilla.org/show_bug.cgi?id=1254297
In SpiderMonkey, a given invocation of the interpreter loop may actually
evaluate several interpreted calls, so each such frame would refer
to the same underlying C++ frame.
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>From gdb-prs-return-21305-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Apr 27 05:29:41 2017
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From: "raajeshdasari at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug corefiles/21395] thread.c:1010 internal-error: int
is_executing(ptid_t): Assertion `tp' failed.
Date: Thu, 27 Apr 2017 05:29:00 -0000
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--- Comment #3 from raajeshdasari at gmail dot com <raajeshdasari at gmail dot com> ---
I added a sleep after this ptrace call ptrace (PTRACE_SET_WATCH_REGS, tid,
&watch_mirror, NULL); and then retried the same call again , Issue is resolved
for me .
diff --git a/gdb/mips-linux-nat.c b/gdb/mips-linux-nat.c
index 9d22773..68641f8 100644
--- a/gdb/mips-linux-nat.c
+++ b/gdb/mips-linux-nat.c
@@ -634,9 +634,20 @@ mips_linux_new_thread (struct lwp_info *lp)
&watch_readback_valid, 0))
return;
+ long r;
+ r= ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL);
tid = ptid_get_lwp (lp->ptid);
- if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1)
- perror_with_name (_("Couldn't write debug register"));
+ if ( r == -1L && errno == ESRCH )
+ {
+ /* sleep for a while to eliminate race condition on update to kernel
+ * task structure with the process state (STOP state of thread).
+ */
+ usleep(10000);
+ if ( ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1 )
+ {
+ perror_with_name (_("Couldn't write debug register"));
+ }
+ }
}
/* Target to_insert_watchpoint implementation. Try to insert a new
--
2.4.11
could someone please review this and let me know if any comments.
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>From gdb-prs-return-21307-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Apr 28 02:43:31 2017
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Subject: [Bug gdb/21443] a bug under gas/opcode
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gaohusheng <ggs334 at 163 dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |critical
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Subject: [Bug gdb/21443] New: a bug under gas/opcode
Date: Fri, 28 Apr 2017 02:43:00 -0000
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Bug ID: 21443
Summary: a bug under gas/opcode
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I found a bug under gas/opcode,
Assembler messages:
Error: internal: bad mips opcode (bits 0x01e00000 doubly defined): mflxc0 t,_d4
Error: internal: bad mips opcode (bits 0x01e00000 doubly defined): mflxc0
t,_d4,_S
Error: internal: bad mips opcode (bits 0x01e00000 doubly defined): mtlxc0 t,_d4
Error: internal: bad mips opcode (bits 0x01e00000 doubly defined): mtlxc0
t,_d4,_S Internal error!
Assertion failure in validate_mips_insn at
/ssd/shunyen/sdk/gdb-7.12/gas/config/tc-mips.c:3368.
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Subject: [Bug testsuite/8595] environ.exp could run on more platforms
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=45ce1b47e4490993b5c1a04f4a8acb62d9ec5039
commit 45ce1b47e4490993b5c1a04f4a8acb62d9ec5039
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Fri Mar 31 13:24:36 2017 -0400
Make environ.exp run on all platforms (and create info-program.exp)
This has been on my TODO list for a while. There's a really old bug
about this (PR testsuite/8595), and there was no reason for
environ.exp to be specific for hppa* targets. So this patch removes
this constraint, modernizes the testcase, and cleans up some things.
Most of the tests remained, and some were rewritten (especially the
one that checks if "show environment" works, which is something kind
of hard to do).
As a bonus, I'm adding a separated info-program.exp file containing
all the tests related to "info program" that were present on
environ.exp.
Tested locally, everything still passes.
gdb/testsuite/ChangeLog:
2017-04-28 Sergio Durigan Junior <sergiodj@redhat.com>
PR testsuite/8595
* gdb.base/environ.exp: Make test available in all architectures.
Move bits related to "info program" testing to
gdb.base/info-program.exp. Rewrite tests to use the two new
procedures mentione below.
(test_set_show_env_var) New procedure.
(test_set_show_env_var_equal): Likewise.
* gdb.base/info-program.exp: New file.
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Subject: [Bug testsuite/8595] environ.exp could run on more platforms
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Finally fixed :-).
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Subject: [Bug record/21447] New: "Assertion `tp != NULL' failed" when trying
to "record btrace" a multithreaded program
Date: Sat, 29 Apr 2017 19:56:00 -0000
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Bug ID: 21447
Summary: "Assertion `tp != NULL' failed" when trying to "record
btrace" a multithreaded program
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Created attachment 10034
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Backtrace
Here's a test C++ program:
#include <string.h>
#include <thread>
int bar()
{
char buf[10];
memset(buf, 0, sizeof(buf));
memset(buf, 'A', 100); // overflow
}
int foo()
{
return bar();
}
void mythread()
{
for(volatile int x=0;x!=1;);
}
int main()
{
std::thread thr(mythread);
foo();
}
I compile it like follows on a 32-bit x86 gcc 4.5:
g++ test.cpp -o test -std=c++0x -pthread -g -fno-stack-protector
Then I run GDB as
gdb -q ./test -ex start -ex 'record btrace' -ex c
And get this output:
Temporary breakpoint 1, main () at test.cpp:19
19 std::thread thr(mythread);
Continuing.
record-btrace.c:1415: internal-error: void
record_btrace_fetch_registers(target_ops*, regcache*, int): Assertion `tp !=
NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Attached is a backtrace from the core generated by GDB for itself.
I was testing
* 32-bit x86 GDB 8.0.50.20170429-git and 7.10.50.20151205-cvs on LFS
* 64-bit x86_64 GDB 7.10.50.20151205-cvs on CLFS 1.2.0
CPU is Intel Core i7-4765T
Linux 3.12.18 64-bit
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Subject: [Bug record/21447] "Assertion `tp != NULL' failed" when trying to
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Date: Sat, 29 Apr 2017 19:56:00 -0000
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--- Comment #1 from Ruslan <b7.10110111 at gmail dot com> ---
If I comment out std::thread line, the bug doesn't happen.
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Subject: [Bug mi/8150] Gdb crashes when doing -data-list-register-values
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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----------------------------------------------------------------------------
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CC| |simon.marchi at ericsson dot com
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--- Comment #3 from Simon Marchi <simon.marchi at ericsson dot com> ---
Spring cleanup, if this isn't actually obsolete, please re-open it.
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Subject: [Bug rust/21449] New: segfault when running
-data-list-register-values x on rust executable
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Bug ID: 21449
Summary: segfault when running -data-list-register-values x on
rust executable
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
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strace of the gdb session and eventual segfault
A segfault occurs in `-data-list-register-values x` when stopped in a rust
executable. See https://github.com/cs01/gdbgui/issues/64. This was confirmed by
o11c and simark in the #gdb irc channel.
MI transcript:
-file-exec-and-symbols /home/chad/git/gdbgui/examples/rust.a\n-break-insert
/home/chad/git/gdbgui/examples/hello.rs:15\n-exec-run\n-data-list-register-values
x\n
Rust source file:
https://raw.githubusercontent.com/cs01/gdbgui/master/examples/hello.rs
makefile: https://github.com/cs01/gdbgui/blob/master/examples/makefile
The kernel log reports
[ 4467.187888] gdb[13609]: segfault at 0 ip 00000000006489ed sp
00007ffc0a0ce260 error 4 in gdb[400000+617000]
The bug was fixed in gdb's git repository, commit b96645f1a1e608 "Add support
for untagged unions in Rust", but is present in version 7.12 and 7.12.1.
Seems similar to a bug #8150, which is old and is likely not related since this
occurs only on Rust executables.
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From: "grassfedcode at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21450] New: segfault when running
-data-list-register-values x on rust executable
Date: Mon, 01 May 2017 06:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21450
Bug ID: 21450
Summary: segfault when running -data-list-register-values x on
rust executable
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: grassfedcode at gmail dot com
Target Milestone: ---
A segfault occurs in `-data-list-register-values x` when stopped in a rust
executable. See https://github.com/cs01/gdbgui/issues/64. This was confirmed by
o11c and simark in the #gdb irc channel.
MI transcript:
-file-exec-and-symbols /home/chad/git/gdbgui/examples/rust.a\n-break-insert
/home/chad/git/gdbgui/examples/hello.rs:15\n-exec-run\n-data-list-register-values
x\n
Rust source file:
https://raw.githubusercontent.com/cs01/gdbgui/master/examples/hello.rs
makefile: https://github.com/cs01/gdbgui/blob/master/examples/makefile
The kernel log reports
[ 4467.187888] gdb[13609]: segfault at 0 ip 00000000006489ed sp
00007ffc0a0ce260 error 4 in gdb[400000+617000]
The bug was fixed in gdb's git repository, commit b96645f1a1e608 "Add support
for untagged unions in Rust", but is present in version 7.12 and 7.12.1.
Seems similar to a bug #8150, which is old and is likely not related since this
occurs only on Rust executables.
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From: "grassfedcode at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21451] New: gdb mi's -data-disassemble command only outputs
lines starting from the closest function
Date: Mon, 01 May 2017 19:39:00 -0000
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Bug ID: 21451
Summary: gdb mi's -data-disassemble command only outputs lines
starting from the closest function
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
Reporter: grassfedcode at gmail dot com
Target Milestone: ---
When running gdb v7.6 up to current HEAD (ee7e95efb9) with the mi2 interpreter,
and trying to view disassembly in mode 4 (mixed source and disassembly), the
line number argument is being ignored.
for example
```
-file-exec-and-symbols
/home/csmith/git/pygdbmi/pygdbmi/tests/sample_c_app/a.out
-data-disassemble -f
/home/csmith/git/pygdbmi/pygdbmi/tests/sample_c_app/hello.c -l 16 -n 1 4\n
^done,asm_insns=[src_and_asm_line={line="16",file="hello.c",fullname="/home/csmith/git/pygdbmi/pygdbmi/tests/sample_c_app/hello.c",line_asm_insn=[{address="0x000000000040057d",func-name="main",offset="0",inst="push
%rbp"}]}]
```
but when I try to look at the next line (17), it outputs the same line (16):
```
-data-disassemble -f
/home/csmith/git/pygdbmi/pygdbmi/tests/sample_c_app/hello.c -l 17 -n 1 4
^done,asm_insns=[src_and_asm_line={line="16",file="hello.c",fullname="/home/csmith/git/pygdbmi/pygdbmi/tests/sample_c_app/hello.c",line_asm_insn=[{address="0x000000000040057d",func-name="main",offset="0",inst="push
%rbp"}]}]
```
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Subject: [Bug mi/21451] gdb mi's -data-disassemble command only outputs lines
starting from the closest function
Date: Mon, 01 May 2017 19:44:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simon.marchi at ericsson dot com
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From: "freddie_chopin at op dot pl" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
Date: Tue, 02 May 2017 21:24:00 -0000
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Freddie Chopin <freddie_chopin at op dot pl> changed:
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--- Comment #3 from Freddie Chopin <freddie_chopin at op dot pl> ---
For me a "workaround" is to explicitly disable guile by passing
`--with-guile=no` to GDB's configure script.
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Subject: [Bug remote/12228] thread.c:598: internal-error: is_thread_state:
Assertion `tp' failed.
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--- Comment #2 from Ben Longbons <b.r.longbons at gmail dot com> ---
I hit this with a minimal example while filing another bug:
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
@(gdb) target extended-remote | gdbserver --multi stdio
Remote debugging using | gdbserver --multi stdio
Remote debugging using stdio
@(gdb) set remote exec-file /bin/true
@(gdb) run
Starting program:
Process /bin/true created; pid = 679
stdin/stdout redirected
Reading /bin/true from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /bin/true from remote target...
Reading symbols from target:/bin/true...Reading
/bin/e82394864538fa7b23b7f87b259ea2a20889c4.debug from remote target...
Reading /bin/.debug/e82394864538fa7b23b7f87b259ea2a20889c4.debug from remote
target...
(no debugging symbols found)...done.
/build/gdb-A87voC/gdb-7.12/gdb/thread.c:982: internal-error: int
is_thread_state(ptid_t, thread_state): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
@Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-A87voC/gdb-7.12/gdb/thread.c:982: internal-error: int
is_thread_state(ptid_t, thread_state): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
@Create a core file of GDB? (y or n) y
[1] 669 abort (core dumped) gdb
For this case, adding `file /bin/true` fixes it.
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Subject: [Bug server/21454] New: `target extended-remote | gdbserver --multi
stdio` uses 100% CPU after gdb quits
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Bug ID: 21454
Summary: `target extended-remote | gdbserver --multi stdio`
uses 100% CPU after gdb quits
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Version: 7.12
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GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
@(gdb) target extended-remote | gdbserver --multi stdio
Remote debugging using | gdbserver --multi stdio
Remote debugging using stdio
@(gdb) set remote exec-file /bin/true
@(gdb) file /bin/true
Reading symbols from /bin/true...(no debugging symbols found)...done.
@(gdb) run
Starting program: /bin/true
Process /bin/true created; pid = 737
stdin/stdout redirected
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading /lib/x86_64-linux-gnu/libc.so.6 from remote target...
[Inferior 1 (process 737) exited normally]
@(gdb) quit
This does *not* happen with TCP targets.
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Subject: [Bug server/21169] GDBServer on ARM can crash the inferior while
single stepping
Date: Wed, 03 May 2017 11:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21169
Antoine Tremblay <antoine.tremblay at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.0 |---
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From: "antoine.tremblay at ericsson dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tdep/21169] GDBServer on ARM can crash the inferior while
single stepping
Date: Wed, 03 May 2017 11:56:00 -0000
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Antoine Tremblay <antoine.tremblay at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|server |tdep
--- Comment #2 from Antoine Tremblay <antoine.tremblay at ericsson dot com> ---
GDB is also affected by this, changed component from server to tdep
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>From gdb-prs-return-21322-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 03 16:55:37 2017
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Wed, 03 May 2017 16:55:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21324
--- Comment #2 from brian at ubuntu dot com <brian at ubuntu dot com> ---
Ubuntu was recently updated with a new version of gdb:
GNU gdb (Ubuntu 7.99.90.20170502-0ubuntu1) 7.99.90.20170502-git
I repeated the same test with the same crash and I'm still observing the same
behavior of gdb hanging and using 100% CPU.
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>From gdb-prs-return-21323-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 03 17:40:49 2017
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From: "mjfoley at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21456] New: set print pretty on for macro expand
Date: Wed, 03 May 2017 17:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21456
Bug ID: 21456
Summary: set print pretty on for macro expand
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When macro expanding defined functions if print pretty is on, newlines and
indentation similar to pretty printing nested structures could be added when
encountering '{', '}', or ';' outside '()'.
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>From gdb-prs-return-21324-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu May 04 22:15:58 2017
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From: "bugzilla at thepaul dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21460] New: SIGTERM received under finalize_python()
causes segmentation fault
Date: Thu, 04 May 2017 22:15:00 -0000
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Bug ID: 21460
Summary: SIGTERM received under finalize_python() causes
segmentation fault
Product: gdb
Version: 8.0
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Created attachment 10038
--> https://sourceware.org/bugzilla/attachment.cgi?id=10038&action=edit
script to reproduce bug
Under the right conditions, if a SIGTERM signal is received by gdb while the
embedded Python interpreter is being shut down, gdb can segfault.
To be more specific: when gdb gets a SIGTERM and Python is the active extension
language, there is a call stack like this:
handle_sigterm (15)
set_quit_flag ()
gdbpy_set_quit_flag (active_ext_lang)
PyErr_SetInterrupt ()
But PyErr_SetInterrupt must not be called after Python has turned off signal
handling, which happens just *before* the final garbage collection. If it is,
and Python happens to check for pending signals (among other times, this
happens while Python code is being executed), then Python will try to call a
handler for that signal, but the handler will be NULL because it's supposed to
be done with signal handling. Calling the NULL function pointer causes to the
SIGSEGV.
I am attaching a shell script which reliably produces the segfault for me on,
at least, any of:
* gdb built from the HEAD of gdb-8.0-branch
* gdb built from tags/gdb-7.12.1-release
* gdb 7.11.1-0ubuntu1~16.04 as distributed in Ubuntu 16.04
The script runs the gdb-under-test under another gdb instance, in order to
issue the SIGTERM at just the right moment.
As a fix, I believe gdbpy_set_quit_flag should simply check that
Py_IsInitialized() is true before calling PyErr_SetInterrupt(). I'd make a
teensy patch, but I don't want anyone to mistakenly think it is a thing that
needs copyright protection or copyright assignment forms.
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>From gdb-prs-return-21325-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri May 05 17:17:05 2017
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Fri, 05 May 2017 17:17:00 -0000
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--- Comment #3 from brian at ubuntu dot com <brian at ubuntu dot com> ---
As I mentioned previously the service I manage retraces crashes from any
application on Ubuntu systems. I've ran across another crash from kodi on
Ubuntu 16.10 that also manages to hang gdb. The behavior is different though
as some information from the thread is displayed:
(gdb) thread apply 43 bt full
Thread 43 (Thread 0x7fc54c7e8700 (LWP 9950)):
#0 0x00007fc61a3e40bd in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1 0x00007fc621393247 in poll () at
/usr/include/x86_64-linux-gnu/bits/poll2.h:46
No locals.
#2 internal_select_ex.isra.0 (writing=1, interval=30) at
../Modules/socketmodule.c:730
pollfd = {fd = 55, events = 4, revents = 0}
#3 internal_select () at ../Modules/socketmodule.c:760
No locals.
#4 internal_connect (timeoutp=<synthetic pointer>, addrlen=<optimized out>,
addr=0x7fc54c7e50d0, s=0x7fc59d494ea0) at ../Modules/socketmodule.c:2113
res = -1
timeout = 0
#5 sock_connect (s=<optimized out>, addro=<optimized out>) at
../Modules/socketmodule.c:2156
_save = 0x7fc5843d16f0
addrbuf = {in = {sin_family = 2, sin_port = 20480, sin_addr = {s_addr =
2566652611}, sin_zero = "\000\000\000\000\000\000\000"}, un = {sun_family = 2,
sun_path =
"\000P\303\002\374\230\000\000\000\000\000\000\000\000\004", '\000' <repeats 15
times>,
"@\211\017\235\305\177\070\060P\347\034\244\305\177\000\000H\022\034\244\305\177\000\000K9G!\306\177\000\000`Q~L\305\177\000\000
Q~L\305\177\000\000\360\026=\204\305\177\000\000\030U\353\365\305\177\000\000\320hg\244\305\177\000\000\270\061\024\244\305\177"},
nl = {nl_family = 2, nl_pad = 20480, nl_pid = 2566652611, nl_groups = 0}, in6 =
{sin6_family = 2, sin6_port = 20480,
sin6_flowinfo = 2566652611, sin6_addr = {__in6_u = {__u6_addr8 =
"\000\000\000\000\000\000\000\000\004\000\000\000\000\000\000", __u6_addr16 =
{0, 0,
0, 0, 4, 0, 0, 0}, __u6_addr32 = {0, 0, 4, 0}}},
sin6_scope_id = 0}, storage = {ss_family = 2,
__ss_padding =
"\000P\303\002\374\230\000\000\000\000\000\000\000\000\004", '\000' <repeats 15
times>,
"@\211\017\235\305\177\070\060P\347\034\244\305\177\000\000H\022\034\244\305\177\000\000K9G!\306\177\000\000`Q~L\305\177\000\000
Q~L\305\177\000\000\360\026=\204\305\177\000\000\030U\353\365\305\177\000\000\320hg\244\305\177\000\000\270\061\024\244\305\177\000\000\000\000\000\000\000\000\000",
__ss_align = 140486724472931}, bt_l2 = {l2_family = 2, l2_psm = 20480,
l2_bdaddr = {
b = "\303\002\374\230\000"}, l2_cid = 0, l2_bdaddr_type = 0
'\000'}, bt_rc = {rc_family = 2, rc_bdaddr = {
b = "\000P\303", <incomplete sequence \374\230>}, rc_channel = 0
'\000'}, bt_sco = {sco_family = 2, sco_bdaddr = {
b = "\000P\303", <incomplete sequence \374\230>}}, bt_hci =
{hci_family = 2, hci_dev = 20480, hci_channel = 707}, ll = {sll_family = 2,
sll_protocol = 20480, sll_ifindex = -1728314685, sll_hatype = 0,
sll_pkttype = 0 '\000', sll_halen = 0 '\000',
sll_addr = "\000\000\000\000\004\000\000"}}
addrlen = 16
timeout = <optimized out>
#6 0x00007fc6213c77cf in ext_do_call (nk=<optimized out>, na=0,
flags=<optimized out>, pp_stack=0x7fc54c7e5248, func=0x7fc5c4087170) at
../Python/ceval.c:4661
tstate = <optimized out>
kwdict = <optimized out>
nstar = <optimized out>
callargs = <optimized out>
stararg = 0x7fc5a415b650
result = 0x0
#7 PyEval_EvalFrameEx (f=0x7fc59d4acd00, throwflag=<optimized out>) at
../Python/ceval.c:3026
flags = <optimized out>
func = 0x7fc5c4087170
na = 0
nk = <optimized out>
n = <optimized out>
pfunc = 0x7fc59d4ace90
sp = 0x7fc59d4ace98
opcode_targets = {0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213c4b37 <PyEval_EvalFrameEx+23399>, 0x7fc6213c4b3c
<PyEval_EvalFrameEx+23404>,
0x7fc6213c4b41 <PyEval_EvalFrameEx+23409>, 0x7fc6213c4b4b
<PyEval_EvalFrameEx+23419>, 0x7fc6213c4b46 <PyEval_EvalFrameEx+23414>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213c4adc <PyEval_EvalFrameEx+23308>, 0x7fc6213c4b6c
<PyEval_EvalFrameEx+23452>, 0x7fc6213c4b71 <PyEval_EvalFrameEx+23457>,
0x7fc6213c4b76 <PyEval_EvalFrameEx+23462>, 0x7fc6213c4b7b
<PyEval_EvalFrameEx+23467>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213c4b80 <PyEval_EvalFrameEx+23472>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c4b85
<PyEval_EvalFrameEx+23477>, 0x7fc6213c4b8a <PyEval_EvalFrameEx+23482>,
0x7fc6213c4b8f <PyEval_EvalFrameEx+23487>, 0x7fc6213c4b9e
<PyEval_EvalFrameEx+23502>, 0x7fc6213c4ba3 <PyEval_EvalFrameEx+23507>,
0x7fc6213c4ba8 <PyEval_EvalFrameEx+23512>, 0x7fc6213c4bad
<PyEval_EvalFrameEx+23517>, 0x7fc6213c4b99 <PyEval_EvalFrameEx+23497>,
0x7fc6213c4b94 <PyEval_EvalFrameEx+23492>, 0x7fc6213c5c4b
<PyEval_EvalFrameEx+27771>, 0x7fc6213c5c46 <PyEval_EvalFrameEx+27766>,
0x7fc6213c5c78 <PyEval_EvalFrameEx+27816>, 0x7fc6213c5c88
<PyEval_EvalFrameEx+27832>, 0x7fc6213c5c95 <PyEval_EvalFrameEx+27845>,
0x7fc6213c5ca2 <PyEval_EvalFrameEx+27858>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c5cb2
<PyEval_EvalFrameEx+27874>, 0x7fc6213c5cc5 <PyEval_EvalFrameEx+27893>,
0x7fc6213c48f3 <PyEval_EvalFrameEx+22819>, 0x7fc6213c5cd5
<PyEval_EvalFrameEx+27909>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213c456f <PyEval_EvalFrameEx+21919>,
0x7fc6213c5ce5 <PyEval_EvalFrameEx+27925>, 0x7fc6213c45bd
<PyEval_EvalFrameEx+21997>, 0x7fc6213c5cf5 <PyEval_EvalFrameEx+27941>,
0x7fc6213c592a <PyEval_EvalFrameEx+26970>, 0x7fc6213c5c55
<PyEval_EvalFrameEx+27781>, 0x7fc6213c5c5a <PyEval_EvalFrameEx+27786>,
0x7fc6213c5c3c <PyEval_EvalFrameEx+27756>, 0x7fc6213c5c41
<PyEval_EvalFrameEx+27761>, 0x7fc6213c5c50 <PyEval_EvalFrameEx+27776>,
0x7fc6213c5d05 <PyEval_EvalFrameEx+27957>, 0x7fc6213c5d0a
<PyEval_EvalFrameEx+27962>, 0x7fc6213c4bb2 <PyEval_EvalFrameEx+23522>,
0x7fc6213c4bb7 <PyEval_EvalFrameEx+23527>, 0x7fc6213c4bbc
<PyEval_EvalFrameEx+23532>, 0x7fc6213c4bc1 <PyEval_EvalFrameEx+23537>,
0x7fc6213c5bfa <PyEval_EvalFrameEx+27690>, 0x7fc6213c5c37
<PyEval_EvalFrameEx+27751>, 0x7fc6213c5a47 <PyEval_EvalFrameEx+27255>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c5d0f
<PyEval_EvalFrameEx+27967>, 0x7fc6213bfa98 <PyEval_EvalFrameEx+2760>,
0x7fc6213c0141 <PyEval_EvalFrameEx+4465>, 0x7fc6213bfa86
<PyEval_EvalFrameEx+2742>, 0x7fc6213c012f <PyEval_EvalFrameEx+4447>,
0x7fc6213c5c5f <PyEval_EvalFrameEx+27791>, 0x7fc6213c5c64
<PyEval_EvalFrameEx+27796>, 0x7fc6213c5c69 <PyEval_EvalFrameEx+27801>,
0x7fc6213c5c6e <PyEval_EvalFrameEx+27806>, 0x7fc6213c5c73
<PyEval_EvalFrameEx+27811>, 0x7fc6213c2185 <PyEval_EvalFrameEx+12725>,
0x7fc6213c5afc <PyEval_EvalFrameEx+27436>, 0x7fc6213c7590
<PyEval_EvalFrameEx+34240>, 0x7fc6213c3082 <PyEval_EvalFrameEx+16562>,
0x7fc6213c59a3 <PyEval_EvalFrameEx+27091>, 0x7fc6213c7595
<PyEval_EvalFrameEx+34245>, 0x7fc6213c32f3 <PyEval_EvalFrameEx+17187>,
0x7fc6213c759a <PyEval_EvalFrameEx+34250>, 0x7fc6213c613a
<PyEval_EvalFrameEx+29034>, 0x7fc6213c6142 <PyEval_EvalFrameEx+29042>,
0x7fc6213c614c <PyEval_EvalFrameEx+29052>, 0x7fc6213c6169
<PyEval_EvalFrameEx+29081>, 0x7fc6213c6183 <PyEval_EvalFrameEx+29107>,
0x7fc6213c5a4c <PyEval_EvalFrameEx+27260>, 0x7fc6213c5bff
<PyEval_EvalFrameEx+27695>, 0x7fc6213c619f <PyEval_EvalFrameEx+29135>,
0x7fc6213c61b8 <PyEval_EvalFrameEx+29160>, 0x7fc6213c61d4
<PyEval_EvalFrameEx+29188>, 0x7fc6213c61f0 <PyEval_EvalFrameEx+29216>,
0x7fc6213c4b50 <PyEval_EvalFrameEx+23424>, 0x7fc6213c4afe
<PyEval_EvalFrameEx+23342>, 0x7fc6213c6209 <PyEval_EvalFrameEx+29241>,
0x7fc6213c62af <PyEval_EvalFrameEx+29407>, 0x7fc6213c58d6
<PyEval_EvalFrameEx+26886>, 0x7fc6213c58f3 <PyEval_EvalFrameEx+26915>,
0x7fc6213c590d <PyEval_EvalFrameEx+26941>, 0x7fc6213c5948
<PyEval_EvalFrameEx+27000>, 0x7fc6213c5962 <PyEval_EvalFrameEx+27026>,
0x7fc6213c5984 <PyEval_EvalFrameEx+27060>, 0x7fc6213c59a8
<PyEval_EvalFrameEx+27096>, 0x7fc6213c59c5 <PyEval_EvalFrameEx+27125>,
0x7fc6213c5a15 <PyEval_EvalFrameEx+27205>, 0x7fc6213c5a2e
<PyEval_EvalFrameEx+27230>, 0x7fc6213c1f65 <PyEval_EvalFrameEx+12181>,
0x7fc6213c59dd <PyEval_EvalFrameEx+27149>, 0x7fc6213c59f9
<PyEval_EvalFrameEx+27177>, 0x7fc6213c6227 <PyEval_EvalFrameEx+29271>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213c5a69 <PyEval_EvalFrameEx+27289>,
0x7fc6213c5a85 <PyEval_EvalFrameEx+27317>, 0x7fc6213c5aa4
<PyEval_EvalFrameEx+27348>, 0x7fc6213c5ac3 <PyEval_EvalFrameEx+27379>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c4ae1
<PyEval_EvalFrameEx+23313>, 0x7fc6213c4b1b <PyEval_EvalFrameEx+23371>,
0x7fc6213c6241 <PyEval_EvalFrameEx+29297>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c7572
<PyEval_EvalFrameEx+34210>, 0x7fc6213c2b0f <PyEval_EvalFrameEx+15167>,
0x7fc6213c5ba6 <PyEval_EvalFrameEx+27606>, 0x7fc6213c5be0
<PyEval_EvalFrameEx+27664>, 0x7fc6213c5bc3 <PyEval_EvalFrameEx+27635>,
0x7fc6213c625b <PyEval_EvalFrameEx+29323>, 0x7fc6213c6278
<PyEval_EvalFrameEx+29352>, 0x7fc6213c6292 <PyEval_EvalFrameEx+29378>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133>, 0x7fc6213c5b04 <PyEval_EvalFrameEx+27444>,
0x7fc6213c5b3c <PyEval_EvalFrameEx+27500>, 0x7fc6213c5b82
<PyEval_EvalFrameEx+27570>, 0x7fc6213c5ae2 <PyEval_EvalFrameEx+27410>,
0x7fc6213bfc0d <PyEval_EvalFrameEx+3133>, 0x7fc6213c2d62
<PyEval_EvalFrameEx+15762>, 0x7fc6213c5c1b <PyEval_EvalFrameEx+27723>,
0x7fc6213c592f <PyEval_EvalFrameEx+26975>, 0x7fc6213bfc0d
<PyEval_EvalFrameEx+3133> <repeats 108 times>}
stack_pointer = <optimized out>
next_instr = <optimized out>
opcode = <optimized out>
oparg = <optimized out>
why = WHY_NOT
err = 0
x = 0x7fc5a46db850
v = <optimized out>
w = <optimized out>
u = <optimized out>
t = <optimized out>
stream = 0x0
fastlocals = 0x7fc59d4ace78
freevars = <optimized out>
retval = <optimized out>
tstate = <optimized out>
co = <optimized out>
instr_ub = <optimized out>
instr_lb = <optimized out>
instr_prev = <optimized out>
first_instr = <optimized out>
names = <optimized out>
consts = <optimized out>
#8 0x00007fc62151f99c in PyEval_EvalCodeEx (co=<optimized out>,
globals=<optimized out>, locals=<optimized out>, args=<optimized out>,
argcount=3, kws=0x0,
kwcount=0, defs=0x0, defcount=0, closure=0x0) at ../Python/ceval.c:3582
f = 0x7fc59d4acd00
retval = 0x0
fastlocals = 0x7fc59d4ace78
---Type <return> to continue, or q <return> to quit---
freevars = 0x7fc59d4ace90
tstate = 0x7fc5843d16f0
x = <optimized out>
u = <optimized out>
#9 0x00007fc6214cd170 in function_call.lto_priv.355 (func=0x7fc59d5ba5f0,
arg=0x7fc5a47c0c80, kw=0x0) at ../Objects/funcobject.c:523
result = <optimized out>
argdefs = <optimized out>
kwtuple = 0x0
d = 0x0
k = 0x0
nk = 0
nd = 0
And that was the last bit of output before the hang. Again this was with gdb
version:
GNU gdb (Ubuntu 7.99.90.20170502-0ubuntu1) 7.99.90.20170502-git
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From: "smark at datto dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21462] gdb hangs when pretty printing some variables in
eclipse cdt
Date: Fri, 05 May 2017 20:47:00 -0000
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From: "smark at datto dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21462] New: gdb hangs when pretty printing some variables
in eclipse cdt
Date: Fri, 05 May 2017 20:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21462
Bug ID: 21462
Summary: gdb hangs when pretty printing some variables in
eclipse cdt
Product: gdb
Version: 7.12.1
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Created attachment 10039
--> https://sourceware.org/bugzilla/attachment.cgi?id=10039&action=edit
a list of stack traces from spinning gdb, plus a bit of the eclipse gdb log
I wrote up a question here which basically states the problem, and somebody
suggested posting to the mailing list, but I didn't see how, so I thought I'd
open a bug.
http://stackoverflow.com/questions/43743703/anybody-have-a-workaround-for-gdb-hanging-while-rendering-pretty-print-in-eclips
I've updated to eclipse neon, I svn updated to the latest
svn://gcc.gnu.org/svn/gcc/trunk/libstdc++-v3/python, and I've just built gdb
7.12.1, all the latest stuff, doesn't help.
I have the pretty printing all working, but every once in a while, trying to
update the variables view, gdb will hang. Actually it spins the cpu. I've
attached gdb to gdb (because I find the idea amusing) and have gotten a number
of stack traces and they're all implying some failure to find a printer and
retrying over and over. Anybody ever see this or have a workaround? It's not
obvious which printer (if it's a single one) is causing the problem, or I'd
just disable it.
Suggestions on how to even diagnose what printer to disable? I google and
google and nobody complains of this behaviour, but having reinstalled
everything, I don't get why it's not happening to anybody else.
Last time I ran into the problem I got some more stack traces and it eventually
hung in one spot. See the attached text file of stack traces.
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21460] SIGTERM received under finalize_python() causes
segmentation fault
Date: Sat, 06 May 2017 05:20:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the report and for the investigation.
I encourage you to submit the patch to gdb-patches@sourceware.org. From what
you described it'll be a very simple patch (probably one or two lines long),
and we don't require copyright assignment for those. Worst case scenario,
someone can take your patch and build upon it, without requiring you to go
through the paperwork.
Cheers.
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
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--- Comment #2 from Joe <jothiram.s at gmail dot com> ---
In my case, the gdb is starting the original program successfully, but
gdb) info shared
does not show any information. Also, the break points that I had set in the
shared library are not detected and the execution does not stop there.
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>From gdb-prs-return-21331-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat May 06 22:42:44 2017
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21465] New: Installing scripts in auto-load
scripts-directory
Date: Sat, 06 May 2017 22:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21465
Bug ID: 21465
Summary: Installing scripts in auto-load scripts-directory
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dilyan.palauzov at aegee dot org
Target Milestone: ---
If an Autotools package wants to install a -gdb.py script under "auto-load
scripts-directory" during "make install", what is the procedure to determine
the destination path?
I wrote this code:
AC_CHECK_PROG(gdb, gdb, found)
if $gdb = found; then
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY=$(gdb -q -ex "show data-directory" -ex "show
auto-load scripts-directory" -ex quit |sed "1d;2{N;s/\n//g;
s/.*\"\(.*\)\".*:\(.*\)./\1 \2/}; /\$datadir/ {s/\(.*\)
\$datadir\(.*\)/\1\2/;q}; s/.* \(.\)/\1/")
else
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY='${datadir}/gdb/auto-load/${libdir}'
fi
AC_SUBST(GDB_AUTO_LOAD_SCRIPTS_DIRECTORY)
which exposes the current "auto-load scripts-directory" to the Makefile
Isn't there a better way?
show configuration prints:
This GDB was configured as follows:
configure --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/local/share/gdb (relocatable)
--with-jit-reader-dir=/usr/local/lib/gdb (relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/usr/local (relocatable)
--with-guile
--with-separate-debug-dir=/usr/local/lib/debug (relocatable)
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
info '(gdb)Data Files':
If the data directory is inside GDB's configured binary prefix (set with
'--prefix' or '--exec-prefix'), then the default data directory will be updated
automatically if the installed GDB is moved to a new location.
and my gdb is in /usr/local/bin.
Where shall I move gdb, so that 'show configurtion' prints something different
for '--with-gdb-datadir'?
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>From gdb-prs-return-21332-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 00:32:26 2017
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21465] Installing scripts in auto-load scripts-directory
Date: Sun, 07 May 2017 00:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21465
--- Comment #1 from dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee dot org> ---
I mean
AC_CHECK_PROG(gdb, gdb, found)
if $gdb = found; then
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY=$(gdb -q -ex "show data-directory" -ex "show
auto-load scripts-directory" -ex quit |sed "1d;2{N;s/\n//g;
s/.*\"\(.*\)\".*:\(.*\)./\1 \2/}; /\$datadir/ {s/\(.*\)
\$datadir\(.*\)/\1\2/;q}; s/.* \(.\)/\1/")
else
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY='${datadir}/gdb/auto-load'
fi
AC_SUBST(GDB_AUTO_LOAD_SCRIPTS_DIRECTORY)
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>From gdb-prs-return-21333-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 00:45:49 2017
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21465] Installing scripts in auto-load scripts-directory
Date: Sun, 07 May 2017 00:45:00 -0000
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--- Comment #2 from dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee dot org> ---
AC_CHECK_PROG(gdb, gdb, found)
if test $gdb = found; then
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY=$(gdb -q -ex "show data-directory" -ex "show
auto-load scripts-directory" -ex quit |sed "1d;2{N;s/\n//g;
s/.*\"\(.*\)\".*:\(.*\)./\1 \2/}; /\$datadir/ {s/\(.*\)
\$datadir\(.*\)/\1\2/;q}; s/.* \(.\)/\1/")
else
GDB_AUTO_LOAD_SCRIPTS_DIRECTORY='${datadir}/gdb/auto-load'
fi
AC_SUBST(GDB_AUTO_LOAD_SCRIPTS_DIRECTORY)
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>From gdb-prs-return-21334-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 05:31:13 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21466] New: better printing of unsized types
Date: Sun, 07 May 2017 05:31:00 -0000
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Bug ID: 21466
Summary: better printing of unsized types
Product: gdb
Version: unknown
Status: NEW
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Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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I found this example on reddit
(https://www.reddit.com/r/rust/comments/60ywnb/initializing_a_dynamically_sized_type/)
struct Bar<T: ?Sized> {
info: u32,
data: T,
}
type Foo = Bar<[u8]>;
fn main() {
let x: Box<Bar<[u8; 3]>> = Box::new(Bar { info: 0, data: [1, 2, 3] });
let y: Box<Foo> = x;
}
I had to add "let z = y" to get debuginfo for "y".
Then running in gdb I get:
(gdb) p *y
$2 = us::Bar<[u8]> {
info: 0,
data: 0x7ffff6c1f014
}
... but that doesn't seem very friendly; in fact it seems odd that the
array's address is printed.
Also the ptype output is a bit off:
(gdb) ptype *y
type = struct us::Bar<[u8]> {
info: u32,
data: [u8; ],
}
It ought to print "data: [u8]" there.
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>From gdb-prs-return-21335-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 11:06:53 2017
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From: "dedeco.balaco at yahoo dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21467] New: Display function shows one less byte when the
last one is \000
Date: Sun, 07 May 2017 11:06:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21467
Bug ID: 21467
Summary: Display function shows one less byte when the last one
is \000
Product: gdb
Version: 7.1
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: dedeco.balaco at yahoo dot com
Target Milestone: ---
Display function, in GDBTUI, with an @ element, shows one less byte when the
last one is \000.
Showing this is probably easier for all to see it clearly. I will try to make a
few steps to anyone reproduce this problem.
1. Given the file p.c:
==
#include <stdio.h>
int main(int c, char **v)
{
char p[10] = {'a','b','c','d','e',0,0,0,0,0};
printf("p = \"%s\"\n", p);
return 0;
}
==
compile it with:
gcc -Wall -ggdb p.c
2. Call gdbtui with:
gdbtui a.out
3. Inside gdbtui, do these commands:
==
start
n
n
disp p[0]@5
disp p[0]@6
disp p[0]@7
disp p[0]@8
disp p[0]@9
disp p[0]@10
disp
==
Compare the output for each command. The last null byte is not shown. With a
counter given (the "@n"), I expect to *see* all the values I asked. For a small
number of values, it is easy. But with a few more being shown, we must count
all of them to know which is the case: are we seeing the last value or is it
zero?
After doing the above steps, the output of the last disp is:
==
(gdb) disp
6: p[0]@10 = "abcde\000\000\000\000"
5: p[0]@9 = "abcde\000\000\000"
4: p[0]@8 = "abcde\000\000"
3: p[0]@7 = "abcde\000"
2: p[0]@6 = "abcde"
1: p[0]@5 = "abcde"
(gdb)
==
P.S.: A small observation to something that I did not find a proper place,
"Environment", as pointed at http://www.gnu.org/software/gdb/bugs/ is that the
output of "gdbtui --version" command is:
==
$ gdbtui --version
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
==
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To: gdb-prs@sourceware.org
Subject: [Bug tui/21468] New: Display function shows one less byte when the
last one is \000
Date: Sun, 07 May 2017 11:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21468
Bug ID: 21468
Summary: Display function shows one less byte when the last one
is \000
Product: gdb
Version: 7.1
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: dedeco.balaco at yahoo dot com
Target Milestone: ---
Display function, in GDBTUI, with an @ element, shows one less byte when the
last one is \000.
Showing this is probably easier for all to see it clearly. I will try to make a
few steps to anyone reproduce this problem.
1. Given the file p.c:
==
#include <stdio.h>
int main(int c, char **v)
{
char p[10] = {'a','b','c','d','e',0,0,0,0,0};
printf("p = \"%s\"\n", p);
return 0;
}
==
compile it with:
gcc -Wall -ggdb p.c
2. Call gdbtui with:
gdbtui a.out
3. Inside gdbtui, do these commands:
==
start
n
n
disp p[0]@5
disp p[0]@6
disp p[0]@7
disp p[0]@8
disp p[0]@9
disp p[0]@10
disp
==
Compare the output for each command. The last null byte is not shown. With a
counter given (the "@n"), I expect to *see* all the values I asked. For a small
number of values, it is easy. But with a few more being shown, we must count
all of them to know which is the case: are we seeing the last value or is it
zero?
After doing the above steps, the output of the last disp is:
==
(gdb) disp
6: p[0]@10 = "abcde\000\000\000\000"
5: p[0]@9 = "abcde\000\000\000"
4: p[0]@8 = "abcde\000\000"
3: p[0]@7 = "abcde\000"
2: p[0]@6 = "abcde"
1: p[0]@5 = "abcde"
(gdb)
==
P.S.: A small observation to something that I did not find a proper place,
"Environment", as pointed at http://www.gnu.org/software/gdb/bugs/ is that the
output of "gdbtui --version" command is:
==
$ gdbtui --version
GNU gdb (GDB) 7.1-ubuntu
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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This GDB was configured as "i486-linux-gnu".
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<http://www.gnu.org/software/gdb/bugs/>.
==
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>From gdb-prs-return-21337-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 15:29:56 2017
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/10619] gdb - Manual and info pages should present GNU
--long options
Date: Sun, 07 May 2017 15:29:00 -0000
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dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dilyan.palauzov at aegee dot org
--- Comment #1 from dilyan.palauzov at aegee dot org <dilyan.palauzov at aegee dot org> ---
./gdb -h versus info '(gdb)Mode Options'
Info nodes "Choosing modes" and "Startup', write about "-nx" with one dash, but
"gdb -h" speaks about "--nx" with two dashes. Likewise for "-nh"/"--nh".
gdb -h does not mention just "-n".
In fact 'Choosing modes' mentions every option with one dash, while "gdb -h"
states that only single-letter options are with one dash.
All of the single-dash/double-dash long-name options I tried do work, but this
does not justify inconsistent documentation.
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>From gdb-prs-return-21338-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 15:39:15 2017
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21469] New: -gdb-show and data-directory
Date: Sun, 07 May 2017 15:39:00 -0000
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Bug ID: 21469
Summary: -gdb-show and data-directory
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
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echo "-gdb-show data" | gdb --interpreter=mi and
echo "-gdb-show data-directory" | gdb --interpreter=mi both print:
=thread-group-added,id="i1"
(gdb)
^done
(gdb)
How to get data-directory using mi?
This does not work contrary to my expectations:
gdb --interpreter=mi -ex "-gdb-show"
I think interpreter-exec called from CLI shall always disable pagination, as in
gdb -ex "interpreter-exec mi -gdb-show" .
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>From gdb-prs-return-21339-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 17:15:54 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/21470] New: gdb producer-sniffs for "clang"
Date: Sun, 07 May 2017 17:15:00 -0000
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Bug ID: 21470
Summary: gdb producer-sniffs for "clang"
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It came up on a rust bug (https://github.com/rust-lang/rust/issues/41252)
that gdb producer-sniffs for "clang" (e.g. in i386-tdep.c).
A simple fix would be to allow "rustc" as well here.
There doesn't seem to be a generic way to sniff for "LLVM back end".
However, I wonder whether it makes sense now to switch to a producer
blacklist rather than a whitelist.
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>From gdb-prs-return-21340-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun May 07 22:50:50 2017
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Subject: [Bug symtab/21470] gdb producer-sniffs for "clang"
Date: Sun, 07 May 2017 22:50:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I'm testing a patch for this, that changes gdb to use a blacklist instead.
I'm not sure if this will be acceptable, since the initial blacklist is
empty.
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>From gdb-prs-return-21341-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon May 08 13:46:13 2017
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Subject: [Bug symtab/21470] gdb producer-sniffs for "clang"
Date: Mon, 08 May 2017 13:46:00 -0000
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Maybe this was wishful thinking since there are some regressions if
I switch to an empty blacklist. I'm still looking into whether
maybe there are just certain old versions of gcc (4.x perhaps) that
were bad here.
Otherwise, I have a different patch that just adds rustc to the check.
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>From gdb-prs-return-21342-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon May 08 18:09:52 2017
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From: "eggert at gnu dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21473] New: wrong type info for extern inline function when
debugging Emacs
Date: Mon, 08 May 2017 18:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21473
Bug ID: 21473
Summary: wrong type info for extern inline function when
debugging Emacs
Product: gdb
Version: 7.12.1
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: eggert at gnu dot org
Target Milestone: ---
Created attachment 10042
--> https://sourceware.org/bugzilla/attachment.cgi?id=10042&action=edit
gzipped tarball of three source files illustrating the bug
On x86-64, GDB Fedora 7.12.1-48.fc25 has problems decoding debugging
information generated by GCC 6.3.1 20161221 (Red Hat 6.3.1-1). The problem does
not occur when I use GCC 4.8.5 20150623 (Red Hat 4.8.5-11) to compile. Although
I originally reported this as a GCC bug
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80646>, Richard Biener starts to
believe that it is a GDB bug.
I ran into the problem while attempting to debug GNU Emacs, and constructed a
small test case to illustrate it. To reproduce it on Fedora 25 x86-64, extract
the files lisp.h, t.c and u.c from the attached tarball, and compile them by
running the shell command:
gcc -g3 -O2 t.c u.c
Then use GDB as follows:
$ gdb a.out
...
(gdb) ptype make_number
type = int ()
(gdb) ptype make_natnum
type = struct {
long i;
} (long)
(gdb) ptype XIL
type = struct {
long i;
} (long)
(gdb)
The reported type of 'make_number' is incorrect: it should be the same type as
that of make_natnum and XIL, but instead is a function returning 'int'. This
incorrect type can cause GDB to print incorrect results in expressions
involving make_number.
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>From gdb-prs-return-21343-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue May 09 19:07:49 2017
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From: "Olivier.Perret at mailbox dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/21477] New: gdb sometimes dies when new-ui pty is closed
Date: Tue, 09 May 2017 19:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21477
Bug ID: 21477
Summary: gdb sometimes dies when new-ui pty is closed
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
Reporter: Olivier.Perret at mailbox dot org
Target Milestone: ---
Reproducer:
1. Start a gdb session somewhere
2. In a terminal (same cwd), run `socat pty,link=pty STDIO,nonblock=1`.
3. In the gdb session, run `new-ui mi3 pty`.
4. Ctrl+C the socat process.
Repeat steps 2 to 4 until the gdb also exits (about 20% of the time in my
case).
About 20% of the time, the gdb process also exits.
Also reproducible by using a "real" pty such as /dev/pts/*, but my use-case is
with socat.
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Subject: [Bug gdb/21478] New: gdb.texinfo: node Index Files: mention gold
--gdb-index
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https://sourceware.org/bugzilla/show_bug.cgi?id=21478
Bug ID: 21478
Summary: gdb.texinfo: node Index Files: mention gold
--gdb-index
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dilyan.palauzov at aegee dot org
Target Milestone: ---
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -19240,7 +19240,8 @@ The index is stored as a section in the symbol file.
@value{GDBN} can
write the index to a file, then you can put it into the symbol file
using @command{objcopy}.
-To create an index file, use the @code{save gdb-index} command:
+To create an index file, link with @command{ld.gold --gdb-index} or use
+the @code{save gdb-index} command:
@table @code
@item save gdb-index @var{directory}
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21480] New: Gdb can't pretty print strings from gcc 7.1/6.3
with -flto
Date: Wed, 10 May 2017 13:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21480
Bug ID: 21480
Summary: Gdb can't pretty print strings from gcc 7.1/6.3 with
-flto
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: alexandre.nunes at gmail dot com
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Created attachment 10045
--> https://sourceware.org/bugzilla/attachment.cgi?id=10045&action=edit
testcase
With this example, compiled with g++ -ggdb3 -std=gnu++1z -Og and with/without
-flto:
#include <string>
#include <iostream>
static void print(const std::string &s)
{
std::cout << s << "\n";
}
int main() {
std::string s("test");
print(s);
}
if we set a breakpoint in the print function, run and type "p s":
without lto:
Breakpoint 1, print (s="test") at test.cpp:4
4 {
(gdb) p s
$1 = "test"
(gdb)
with -flto:
Breakpoint 1, print (s=...) at test.cpp:4
4 {
(gdb) p s
$1 = (const string &) @0x7fffffffdfd0: {_M_dataplus = {_M_p = 0x7fffffffdfe0
"test"}, _M_string_length = 4, {
_M_local_buf = "test\000\177\000\000\000\000\000\000\000\000\000",
_M_allocated_capacity = 139639930447220}}
(gdb)
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Subject: [Bug c++/21480] Gdb can't pretty print strings from gcc 7.1/6.3 with
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--- Comment #1 from alexandre.nunes at gmail dot com ---
Arch is x86_64, compilers tested: g++-6.3 & 7.1 from debian and 7.1 vanilla.
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>From gdb-prs-return-21347-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 10 23:53:55 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/21470] gdb producer-sniffs for "clang"
Date: Wed, 10 May 2017 23:53:00 -0000
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
One specific regression is gdb.ada/ref_param.exp, which fails because
gdb starts believing the DWARF line table. But I think the line table
is correct and the test might be wrong.
CU: /home/tromey/gdb/binutils-gdb/gdb/testsuite/gdb.ada/ref_param/pck.adb:
File name Line number Starting address
pck.adb 18 0x4012be
pck.adb 18 0x4012be
pck.adb 20 0x4012c6
pck.adb 21 0x4012d7
pck.adb 23 0x4012e5
With my current patch, the breakpoint is set on line 18.
Without it, it is set at line 20.
Doesn't line 18 seem correct though?
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Subject: [Bug build/8379] configure --program-suffix does not work for
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |sergiodj at redhat dot com
Resolution|--- |FIXED
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Closing as it's fixed.
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Subject: [Bug build/9322] linux-low.c: In function `kill_lwp': error:
`__NR_tkill' undeclared
Date: Thu, 11 May 2017 11:59:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Old bug report, don't see how to reproduce it. It's probably been fixed a log
time ago. I'm closing it. Feel free to reopen if still valid.
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>From gdb-prs-return-21350-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu May 11 14:16:02 2017
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From: "ro at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tui/21482] New: gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Thu, 11 May 2017 14:16:00 -0000
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Bug ID: 21482
Summary: gdb 8.0 tui doesn't build with native curses on
Solaris
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: ro at gcc dot gnu.org
Target Milestone: ---
Target: *-*-solaris2.*
When trying to build the gdb 8.0 branch with native curses on Solaris 10
(Solaris 11 and 12 include ncurses as well, and it's found by default), I ran
into a couple of issues:
* Initially, compilation failed like this:
In file included from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/gdb_curses.h:42:
0,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-data.h:2
6,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c
:31:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c: In function ‘CORE_A
DDR tui_disassemble(gdbarch*, tui_asm_line*, CORE_ADDR, int)’:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c:71:19: error: ‘class
string_file’ has no member named ‘wclear’; did you mean ‘clear’?
gdb_dis_out.clear ();
^
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c:78:19: error: ‘class
string_file’ has no member named ‘wclear’; did you mean ‘clear’?
gdb_dis_out.clear ();
^
make[2]: *** [Makefile:1927: tui-disasm.o] Error 1
It turned out this happens because <curses.h> has
#define clear() wclear(stdscr)
this can be avoided by defining NOMACROS, however, like
make CFLAGS+=-DNOMACROS CXXFLAGS+=-DNOMACROS
* While this gets around the wclear/clear issue above, I ran into another
issue:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c: In function
‘void tui_erase_source_content(tui_win_info*, int)’:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c:257:18: error:
invalid conversion from ‘const char*’ to ‘char*’ [-fpermissive]
no_src_str);
^
In file included from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/gdb_curses.h:42:0,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-data.h:26,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c:33:
/vol/gcc-7/lib/gcc/sparc-sun-solaris2.10/7.1.0/include-fixed/curses.h:699:12:
note: initializing argument 4 of ‘int mvwaddstr(WINDOW*, int, int, char*)’
extern int mvwaddstr(WINDOW *, int, int, char *);
^~~~~~~~~
make[2]: *** [Makefile:1927: tui-winsource.o] Error 1
Unlike ncurses, <curses.h> declares
extern int mvwaddstr(WINDOW *, int, int, char *);
* In the end, I've just avoided the issue by configuring with --disable-tui.
Rainer
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Subject: [Bug rust/21483] New: Rust expression evaluation can be really
expensive
Date: Thu, 11 May 2017 18:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21483
Bug ID: 21483
Summary: Rust expression evaluation can be really expensive
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: jrmuizel at gmail dot com
Target Milestone: ---
STR:
$ git clone https://github.com/servo/webrender
$ cd webrender/wrench
$ cargo build --release
$ gdb --args ../target/release/wrench show reftests/text/text.yaml
(gdb) rb Renderer::render
(gdb) r
Thread 1 "wrench" hit Breakpoint 2, webrender::renderer::Renderer::render
(self=0x7fffffff9298, framebuffer_size=...)
at /home/jrmuizel/src/webrender/webrender/src/renderer.rs:1251
1251 pub fn render(&mut self, framebuffer_size: DeviceUintSize) {
(gdb) c
Thread 1 "wrench" hit Breakpoint 2, webrender::renderer::Renderer::render
(self=0x7fffffff9298, framebuffer_size=...)
at /home/jrmuizel/src/webrender/webrender/src/renderer.rs:1251
1251 pub fn render(&mut self, framebuffer_size: DeviceUintSize) {
(gdb) p
self.current_frame.0.frame.0.passes.buf.ptr.pointer.0[0].color_targets.targets.buf.ptr.pointer.0[0].alpha_batcher.tasks.buf.ptr.pointer.0[0].items.buf.ptr
rust_evaluate_subexp is called roughly 760939 times to evaluate this expression
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Subject: [Bug rust/21484] New: watch -location does not work with rust
Date: Thu, 11 May 2017 18:06:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21484
Bug ID: 21484
Summary: watch -location does not work with rust
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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In rust code, watch -location doesn't work:
(gdb) watch -location a
syntax error in expression, near `) 0x00007fffffffe0f4'.
The problem is how watch -location rewrites the expression.
This has to be language-dependent.
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Subject: [Bug rust/21484] watch -location does not work with rust
Date: Thu, 11 May 2017 18:10:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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CC| |jrmuizel at gmail dot com
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Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Fri, 12 May 2017 02:04:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I think the problem is here:
/* Field access in structs and untagged unions works like C. */
*pos = pc;
result = evaluate_subexp_standard (expect_type, exp, pos, noside);
This re-evaluates the particular subexpression again.
This means an explosion when the LHS itself does this.
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Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Fri, 12 May 2017 02:10:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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Status|UNCONFIRMED |NEW
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
I have a patch which I'll put in tomorrow.
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Subject: [Bug cli/10438] "help" completer does not know about "user-defined"
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Olb bug. Closing as it is fixed.
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Subject: [Bug gdb/10498] segfault on "run <program>" when built with gcc
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I'm closing this as OBSOLETE because it's an old report. Feel free to reopen
if this is still a bug.
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Subject: [Bug build/9627] gdb 6.8 doesn't build when environment variable,
"U", is set previously by user.
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
BTW, I checked and the bug is still valid.
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Closing as INVALID because this is a libiberty bug. Feel free to reopen if
needed.
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Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Fri, 12 May 2017 15:05:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6830f270e7b6676e7a77c1b8080941e35003d918
commit 6830f270e7b6676e7a77c1b8080941e35003d918
Author: Tom Tromey <tom@tromey.com>
Date: Thu May 11 22:22:36 2017 -0600
Avoid exponential behavior in rust_evaluate_subexp
The STRUCTOP_STRUCT case in rust_evaluate_subexp would evaluate its
LHS, and then, if it did not need Rust-specific treatment, it would
back up and re-evaluate the entire STRUCTOP_STRUCT part of the
expression using evaluate_subexp_standard. This yields exponential
behavior and causes some expressions to evaluate extremely slowly.
The fix is to simply do the needed work inline.
This is PR rust/21483.
ChangeLog
2017-05-12 Tom Tromey <tom@tromey.com>
PR rust/21483:
* rust-lang.c (rust_evaluate_subexp) <STRUCTOP_STRUCT>: Don't
recurse, just call value_struct_elt directly.
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Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Fri, 12 May 2017 15:06:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
I asked to put it on the 8.0 branch, we'll see.
There's no way to set the target milestone to post-8.0.
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To: gdb-prs@sourceware.org
Subject: [Bug build/9627] gdb 6.8 doesn't build when environment variable,
"U", is set previously by user.
Date: Fri, 12 May 2017 15:12:00 -0000
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--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
It's really an autoconf bug, a leftover from the ansi2knr stuff.
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>From gdb-prs-return-21363-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat May 13 17:58:21 2017
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From: "anton at samba dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21490] New: gdb/thread.c:1121: internal-error: void
finish_thread_state(ptid_t): Assertion `tp' failed.
Date: Sat, 13 May 2017 17:58:00 -0000
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Bug ID: 21490
Summary: gdb/thread.c:1121: internal-error: void
finish_thread_state(ptid_t): Assertion `tp' failed.
Product: gdb
Version: HEAD
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I hit this assert on ppc64le with a build of HEAD from today:
gdb/thread.c:1121: internal-error: void finish_thread_state(ptid_t): Assertion
`tp' failed.
To reproduce
# cat testcase.S
#include <ppc-asm.h>
#include <syscall.h>
FUNC_START(_start)
li r0,SYS_exit
li r3,0
sc
FUNC_END(_start)
# cat cmds
set pagination off
break _start
run
layout reg
stepi 5
# gcc -ffreestanding -nostdlib -fno-builtin -static -o testcase testcase.S
# gdb -x cmds ./testcase
[Inferior 1 (process 88304) exited normally]
../../binutils-gdb/gdb/thread.c:1121: internal-error: void
finish_thread_state(ptid_t): Assertion `tp' failed.
A problem internal to GDB has been detected,
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Subject: [Bug rust/21484] watch -location does not work with rust
Date: Sun, 14 May 2017 17:10:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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Subject: [Bug rust/20603] gdb fails to properly restart a rust test
executable
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I can't reproduce this any more.
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Mon, 15 May 2017 03:09:00 -0000
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--- Comment #3 from Shahzeb <shahzeb001 at gmail dot com> ---
Any update on this?
I've uninstalled and then installed gdb twice (via brew). I've also codesigned
it. Still get "No shared libraries loaded at this time.". Really frustrating.
macOS: 10.12.4
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Subject: [Bug rust/21484] watch -location does not work with rust
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This bug turns out to be surprisingly hard.
Location watchpoints try to set the language to C when the
expression is rewritten to *(TYPE*)ADDR.
However, this doesn't actually work, because nothing forces
the re-parse to be done in C.
Making the obvious change there also doesn't work -- it regresses
gdb.dlang/watch-loc.exp, which makes sense, because what happens
then is that gdb tries to parse a D type using the C parser.
My next idea was to change breakpoint.c to create an equivalent
expression without using the parser. But here the problem is
how to re-parse the type string when resetting breakpoints.
There's no existing API (other than the language parser), AFAIK,
that can always parse the output of type_to_string.
And, if you're going to use the language parser anyway... I guess
we might as well just make the rewriter a lang hook. So, that's
my current plan.
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>From gdb-prs-return-21368-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue May 16 09:49:18 2017
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Subject: [Bug gdb/21494] New: segfault in find_partial_die_in_comp_unit
Date: Tue, 16 May 2017 09:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21494
Bug ID: 21494
Summary: segfault in find_partial_die_in_comp_unit
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: rguenth at gcc dot gnu.org
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I get a segfault in find_partial_die_in_comp_unit because cu->partial_dies is
NULL.
#0 find_partial_die_in_comp_unit (sect_off=(unknown: 0), cu=0xfff0e0)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:16369
#1 0x00000000005f91d7 in find_partial_die (sect_off=(unknown: 0),
offset_in_dwz=0, cu=0xfd8b50)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:16419
#2 0x00000000005f955f in fixup_partial_die (part_die=0x1023220, cu=0xfd8b50)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:16522
#3 0x00000000005e16f1 in scan_partial_symbols (first_die=0x10231c0,
lowpc=0x7fffffffd330, highpc=0x7fffffffd328, set_addrmap=0, cu=0xfd8b50)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:6824
#4 0x00000000005dfe7a in process_psymtab_comp_unit_reader (
reader=0x7fffffffd460, info_ptr=0x7ffff7fe4de4 "\002",
comp_unit_die=0xfef980, has_children=1, data=0x7fffffffd550)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:6183
#5 0x00000000005df125 in init_cutu_and_read_dies (this_cu=0xf1e600,
abbrev_table=0x0, use_existing_cu=0, keep=0,
die_reader_func=0x5dfb24 <process_psymtab_comp_unit_reader(die_reader_specs
const*, gdb_byte const*, die_info*, int, void*)>, data=0x7fffffffd550)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:5798
#6 0x00000000005e0324 in process_psymtab_comp_unit (this_cu=0xf1e600,
want_partial_unit=0, pretend_language=language_minimal)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:6265
#7 0x00000000005e0f8c in dwarf2_build_psymtabs_hard (objfile=0xf1eff0)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:6658
#8 0x00000000005db951 in dwarf2_build_psymtabs (objfile=0xf1eff0)
at /space/rguenther/src/binutils-gdb/gdb/dwarf2read.c:4407
#9 0x00000000004f0cab in read_psyms (objfile=0xf1eff0)
at /space/rguenther/src/binutils-gdb/gdb/elfread.c:1290
#10 0x00000000006c7958 in require_partial_symbols (objfile=0xf1eff0, verbose=0)
at /space/rguenther/src/binutils-gdb/gdb/psymtab.c:87
#11 0x0000000000704d23 in read_symbols (objfile=0xf1eff0, add_flags=...)
at /space/rguenther/src/binutils-gdb/gdb/symfile.c:883
#12 0x000000000070535a in syms_from_objfile_1 (objfile=0xf1eff0,
addrs=0xf1dc20, add_flags=...)
at /space/rguenther/src/binutils-gdb/gdb/symfile.c:1062
#13 0x00000000007053b2 in syms_from_objfile (objfile=0xf1eff0, addrs=0x0,
add_flags=...) at /space/rguenther/src/binutils-gdb/gdb/symfile.c:1078
#14 0x0000000000705753 in symbol_file_add_with_addrs (abfd=0xf1edb0,
name=0x7fffffffe2bf "./simple.exe", add_flags=..., addrs=0x0, flags=...,
parent=0x0) at /space/rguenther/src/binutils-gdb/gdb/symfile.c:1177
#15 0x0000000000705a48 in symbol_file_add_from_bfd (abfd=0xf1edb0,
name=0x7fffffffe2bf "./simple.exe", add_flags=..., addrs=0x0, flags=...,
parent=0x0) at /space/rguenther/src/binutils-gdb/gdb/symfile.c:1268
#16 0x0000000000705ac9 in symbol_file_add (name=0x7fffffffe2bf "./simple.exe",
add_flags=..., addrs=0x0, flags=...)
we come via
16415 if (per_cu->cu == NULL || per_cu->cu->partial_dies == NULL)
16416 -> load_partial_comp_unit (per_cu);
16417
16418 per_cu->cu->last_used = 0;
16419 pd = find_partial_die_in_comp_unit (sect_off, per_cu->cu);
but after load_partial_comp_unit the partial_dies hash is not allocated.
The reason is likely invalid DWARF:
Compilation Unit @ offset 0x15b:
Length: 0x786c (32-bit)
Version: 4
Abbrev Offset: 0x64
Pointer Size: 8
<0><166>: Abbrev Number: 1 (DW_TAG_compile_unit)
<167> DW_AT_producer : (indirect string, offset: 0x4c7): GNU GIMPLE
8.0.0 20170515 (experimental) [trunk revision 221942] -mtune=generic
-march=x86-64 -mtune=generic -march=x86-64 -g -g -O2 -O0 -O2 -O0 -fexceptions
-fmath-errno -fsigned-zeros -ftrapping-math -fno-trapv -fno-openmp -fno-openacc
-fmessage-length=0 -fno-show-column -ffunction-sections -fdata-sections
-fltrans
<16b> DW_AT_language : 4 (C++)
<16c> DW_AT_name : (indirect string, offset: 0x2c5): <artificial>
<170> DW_AT_comp_dir : (indirect string, offset: 0x41e):
/abuild/rguenther/obj-early-lto-debug-g/x86_64-pc-linux-gnu/libstdc++-v3/testsuite
<174> DW_AT_ranges : 0x70
<178> DW_AT_low_pc : 0x0
<180> DW_AT_stmt_list : 0xe7
<1><184>: Abbrev Number: 2 (DW_TAG_imported_unit)
<185> DW_AT_import : <0x0> [Abbrev Number: 113]
where this import references a non-existing unit.
sth better than just segfaulting should happen here.
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Subject: [Bug gdb/20536] fails to handle DW_AT_upper_bound with
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What |Removed |Added
----------------------------------------------------------------------------
Blocks| |21494
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=21494
[Bug 21494] segfault in find_partial_die_in_comp_unit
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Subject: [Bug gdb/21494] segfault in find_partial_die_in_comp_unit
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |20536
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Caused by bug 20536 :/
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=20536
[Bug 20536] fails to handle DW_AT_upper_bound with DW_AT_constant_value in
referenced DIE
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Subject: [Bug gdb/21494] segfault in find_partial_die_in_comp_unit
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Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on|20536 |20882
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Err, 20882, stupid bugzilla defaults.
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=20536
[Bug 20536] fails to handle DW_AT_upper_bound with DW_AT_constant_value in
referenced DIE
https://sourceware.org/bugzilla/show_bug.cgi?id=20882
[Bug 20882] GNU ld discards sections required by relocations in .debug_info
with --gc-sections
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----------------------------------------------------------------------------
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[Bug 21494] segfault in find_partial_die_in_comp_unit
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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CC| |qiyao at gcc dot gnu.org
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Close this issue as it is fixed by
https://sourceware.org/ml/gdb-patches/2017-05/msg00287.html ?
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From: "jules at op59 dot net" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21496] New: Python signal.signal() doesn't restore
SIGINT handler correctly.
Date: Tue, 16 May 2017 19:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21496
Bug ID: 21496
Summary: Python signal.signal() doesn't restore SIGINT handler
correctly.
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: jules at op59 dot net
Target Milestone: ---
I've seen a curious problem in gdb where modifying and restoring the handler
for SIGINT from within gdb's python, breaks subsequent handling of Ctrl-C in
gdb. Specifically it affects Ctrl-C when used to terminate commands that output
lots of text and page with '---Type <return> to continue, or q <return> to
quit---'.
Here's how to reproduce, using a build of gdb from git.
First get/build an executable who's main() is long enough to require scrolling
when disassembled from within gdb (you may need to reduce the size of your
terminal window for this), and load into gdb:
> /home/jules/gdb_git_dir/gdb/gdb --data-directory
gdb_git_dir/gdb/data-directory a.out
GNU gdb (GDB) 8.0.50.20170516-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from a.out...done.
Do disassemble of a function:
(gdb) disassemble main
Dump of assembler code for function main:
0x0000000000400546 <+0>: push %rbp
0x0000000000400547 <+1>: mov %rsp,%rbp
0x000000000040054a <+4>: sub $0x10,%rsp
0x000000000040054e <+8>: mov $0x400634,%edi
0x0000000000400553 <+13>: callq 0x400410 <puts@plt>
0x0000000000400558 <+18>: movl $0x0,-0x4(%rbp)
0x000000000040055f <+25>: jmp 0x40059c <main+86>
0x0000000000400561 <+27>: mov -0x4(%rbp),%ecx
0x0000000000400564 <+30>: mov $0x55555556,%edx
0x0000000000400569 <+35>: mov %ecx,%eax
0x000000000040056b <+37>: imul %edx
0x000000000040056d <+39>: mov %ecx,%eax
0x000000000040056f <+41>: sar $0x1f,%eax
0x0000000000400572 <+44>: sub %eax,%edx
0x0000000000400574 <+46>: mov %edx,%eax
0x0000000000400576 <+48>: mov %eax,%edx
0x0000000000400578 <+50>: add %edx,%edx
0x000000000040057a <+52>: add %eax,%edx
0x000000000040057c <+54>: mov %ecx,%eax
0x000000000040057e <+56>: sub %edx,%eax
0x0000000000400580 <+58>: test %eax,%eax
0x0000000000400582 <+60>: jne 0x400598 <main+82>
---Type <return> to continue, or q <return> to quit---
At this point, Ctrl-C correctly interrupts the disassembly:
---Type <return> to continue, or q <return> to quit---^CQuit
Now use python to change and restore the handler for SIGINT. We actually
do this twice to verify that we restored the original <built-in function
default_int_handler>.
(gdb) python
>import signal
>a = signal.signal( signal.SIGINT, signal.SIG_IGN)
>b = signal.signal( signal.SIGINT, a)
>c = signal.signal( signal.SIGINT, b)
>d = signal.signal( signal.SIGINT, c)
>print a, b, c, d
>end
<built-in function default_int_handler> 1 <built-in function
default_int_handler> 1
(gdb)
Try disassembling again:
(gdb) disassemble main
Dump of assembler code for function main:
0x0000000000400546 <+0>: push %rbp
0x0000000000400547 <+1>: mov %rsp,%rbp
0x000000000040054a <+4>: sub $0x10,%rsp
0x000000000040054e <+8>: mov $0x400634,%edi
0x0000000000400553 <+13>: callq 0x400410 <puts@plt>
0x0000000000400558 <+18>: movl $0x0,-0x4(%rbp)
0x000000000040055f <+25>: jmp 0x40059c <main+86>
0x0000000000400561 <+27>: mov -0x4(%rbp),%ecx
0x0000000000400564 <+30>: mov $0x55555556,%edx
0x0000000000400569 <+35>: mov %ecx,%eax
0x000000000040056b <+37>: imul %edx
0x000000000040056d <+39>: mov %ecx,%eax
0x000000000040056f <+41>: sar $0x1f,%eax
0x0000000000400572 <+44>: sub %eax,%edx
0x0000000000400574 <+46>: mov %edx,%eax
0x0000000000400576 <+48>: mov %eax,%edx
0x0000000000400578 <+50>: add %edx,%edx
0x000000000040057a <+52>: add %eax,%edx
0x000000000040057c <+54>: mov %ecx,%eax
0x000000000040057e <+56>: sub %edx,%eax
0x0000000000400580 <+58>: test %eax,%eax
0x0000000000400582 <+60>: jne 0x400598 <main+82>
---Type <return> to continue, or q <return> to quit---
This time pressing Ctrl-C doesn't interrupt; instead it gives:
---Type <return> to continue, or q <return> to quit---^C
At this point, entering any other key ('o' in this example) actually interrupts
the disassembly, and appears to insert the key into the next line:
---Type <return> to continue, or q <return> to quit---^CQuit
(gdb) o
So it looks like the behaviour of Ctrl-C has been subtly changed by the
change+restore of gdb's SIGINT handler.
With gdb-7.7, the behaviour is slightly worse - entering Ctrl-C has no affect
at all; the only way to terminate the disassembly is to enter q<Return>.
This is perhaps a minor issue for interactive sessions, but it causes problems
when using gdb from scripts, e.g. as part of a test suite.
Thanks for any information about what could be going wrong here.
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From: "jlott1 at yahoo dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21497] New: FreeBSD: infrun.c:5565: internal-error:
int finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Tue, 16 May 2017 21:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21497
Bug ID: 21497
Summary: FreeBSD: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: jlott1 at yahoo dot com
CC: jhb at FreeBSD dot org
Target Milestone: ---
Created attachment 10053
--> https://sourceware.org/bugzilla/attachment.cgi?id=10053&action=edit
Debug log of the failed continue
I'm using gdb7121 from FreeBSD ports. Getting this assert occasionally when
continuing from a breakpoint:
infrun.c:5565: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
I ran with some debugging on to narrow it down (set debug target 1; set debug
infrun 1; set debug fbsd-lwp 1). Unfortunately it takes a long time to
reproduce so the debug output is fairly large (30MB). Only the end is really
relevant, I think. It appears to be an interaction (race condition) between new
threads being launched and the continuing of a thread from a breakpoint.
Skipping over a lot of the verbose messages for brevity/clarity, you can see
the sequence in the last continue:
-> native->to_log_command (...)
<- native->to_log_command (0x1d7f300, c)
Continuing.
...
infrun: resuming [LWP 102181 of process 23510] for step-over
...
infrun: skipping breakpoint: stepping past insn at: 0x1df0c07
infrun: skipping breakpoint: stepping past insn at: 0x1df0c07
-> native->to_insert_breakpoint (...)
...
<- native->to_insert_breakpoint (0x1d7f300, i386:x86-64, 0x000000080a335d00) =
0
...
infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=1, current thread
[LWP 102181 of process 23510] at 0x1df0c07
...
FLWP: fbsd_resume for ptid (23510, 102181, 0)
So far so good, everything is setup to single-step LWP 102181. However, because
it is single stepping, it is expecting to only receive events about that
thread. However, there was already a thread-create event pending when the
breakpoint occurred. Therefore the next event that gets returned from pthread
is actually a create for a different thread.
FLWP: adding thread for LWP 101493
...
[New LWP 101493 of process 23510]
...
infrun: target_wait (-1.0.0, status) =
infrun: 23510.101493.0 [LWP 101493 of process 23510],
infrun: status->kind = spurious
...
infrun: TARGET_WAITKIND_SPURIOUS
...
infrun: Switching context from LWP 102181 of process 23510
...
to LWP 101493 of process 23510
After it processes this new thread, it will now resume all threads. This is not
good, because the "continue" code still thinks it is in single-step mode.
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread
[LWP 101493 of process 23510] at 0x80add2d20
...
FLWP: fbsd_resume for ptid (-1, 0, 0)
Because all threads are now running, another thread hits the temporary
breakpoint that was intended for the single-stepping thread.
infrun: target_wait (-1.0.0, status) =
infrun: 23510.101602.0 [LWP 101602 of process 23510],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
...
infrun: TARGET_WAITKIND_STOPPED
Now it checks to see that the thread that hit the breakpoint is the correct
thread that was single-stepping. It was not, hence the assert.
infrun.c:5565: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
I hope this is clear. It seems there is a mismatch between what the "core" gdb
code expects in terms of ptrace event ordering and how the FreeBSD ptrace API
actually behaves. I'll attach the (unfiltered) end of the log to the report as
well. I can reproduce locally with our application relatively easily, but I've
not come up with a standalone test program to cause it yet.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Wed, 17 May 2017 05:09:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Tom Tromey
<tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=69e9e8a0d5ae31e9869658771a7d399a53ac7833
commit 69e9e8a0d5ae31e9869658771a7d399a53ac7833
Author: Tom Tromey <tom@tromey.com>
Date: Thu May 11 22:22:36 2017 -0600
Avoid exponential behavior in rust_evaluate_subexp
The STRUCTOP_STRUCT case in rust_evaluate_subexp would evaluate its
LHS, and then, if it did not need Rust-specific treatment, it would
back up and re-evaluate the entire STRUCTOP_STRUCT part of the
expression using evaluate_subexp_standard. This yields exponential
behavior and causes some expressions to evaluate extremely slowly.
The fix is to simply do the needed work inline.
This is PR rust/21483.
2017-05-12 Tom Tromey <tom@tromey.com>
PR rust/21483:
* rust-lang.c (rust_evaluate_subexp) <STRUCTOP_STRUCT>: Don't
recurse, just call value_struct_elt directly.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21483] Rust expression evaluation can be really expensive
Date: Wed, 17 May 2017 05:17:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Wed, 17 May 2017 08:19:00 -0000
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--- Comment #2 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
> Close this issue as it is fixed by
> https://sourceware.org/ml/gdb-patches/2017-05/msg00287.html ?
They are completely unrelated, unfortunately: this one persists even
after the fix above went in.
The problem boils down to
$ cat cc.c
#include <string.h>
const char *str = "msg";
void
func (char *str)
{
(void) strlen (str);
}
void
call (void)
{
func (str);
}
$ g++ -c -O2 -Wall -c cc.c
cc.c: In function 'void call()':
cc.c:14:12: error: invalid conversion from 'const char*' to 'char*'
[-fpermissive]
func (str);
^
cc.c:6:1: note: initializing argument 1 of 'void func(char*)'
func (char *str)
^~~~
However (as I wasn't aware initially), you can simply cast the constness
away in all calls to mvwaddstr. I'll give that a whirl.
Rainer
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>From gdb-prs-return-21379-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 17 08:39:41 2017
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Wed, 17 May 2017 08:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21482
--- Comment #3 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
> --- Comment #2 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
[...]
> However (as I wasn't aware initially), you can simply cast the constness
> away in all calls to mvwaddstr. I'll give that a whirl.
The attached patch worked for me, allowing a sparc-sun-solaris2.10
compilation to succeed on the 8.0 branch. Comparing gdb/tui on the
branch and mainline, I noticed that the only difference between the two
is this fix:
2017-05-13 Eli Zaretskii <eliz@gnu.org>
* tui/tui.c (tui_enable): Cast "unknown" to 'char *' to avoid a
C++ compiler warning.
for exactly the same problem (well, same problem, different function).
Rainer
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>From gdb-prs-return-21380-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 17 08:41:01 2017
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Wed, 17 May 2017 08:40:00 -0000
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--- Comment #4 from Rainer Orth <ro at gcc dot gnu.org> ---
Created attachment 10054
--> https://sourceware.org/bugzilla/attachment.cgi?id=10054&action=edit
proposed patch
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>From gdb-prs-return-21381-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 17 15:05:17 2017
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From: "hjl.tools at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21494] segfault in find_partial_die_in_comp_unit
Date: Wed, 17 May 2017 15:05:00 -0000
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Bug 21494 depends on bug 20882, which changed state.
Bug 20882 Summary: GNU ld discards sections required by relocations in .debug_info with --gc-sections
https://sourceware.org/bugzilla/show_bug.cgi?id=20882
What |Removed |Added
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Resolution|--- |FIXED
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>From gdb-prs-return-21382-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 17 16:18:45 2017
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Wed, 17 May 2017 16:18:00 -0000
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--- Comment #5 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Rainer Orth from comment #4)
> Created attachment 10054 [details]
> proposed patch
Can you post the patch to gdb-patches@?
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>From gdb-prs-return-21383-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu May 18 08:57:31 2017
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
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Date: Thu, 18 May 2017 08:57:00 -0000
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What |Removed |Added
----------------------------------------------------------------------------
URL| |https://sourceware.org/ml/g
| |db-patches/2017-05/msg00410
| |.html
--- Comment #6 from Rainer Orth <ro at gcc dot gnu.org> ---
Sure, patch posted.
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Subject: [Bug build/21500] New: gdb sizeof(long int)=4 but gcc sizeof(long
int)=8 on x86_64-pc-cygwin
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https://sourceware.org/bugzilla/show_bug.cgi?id=21500
Bug ID: 21500
Summary: gdb sizeof(long int)=4 but gcc sizeof(long int)=8 on
x86_64-pc-cygwin
Product: gdb
Version: 7.10.1
Status: UNCONFIRMED
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Host: CYGWIN_NT-10.0 Caroline-2 2.8.0(0.309/5/3) 2017-04-01
20:47 x86_64 Cygwin
Target: x86_64 Cygwin
gcc sizeof(long)=8 but gdb sizeof(long)=4 on current x86_64-pc-cygwin.
Consistency between gdb and gcc is required for any given platform.
The gdb build appears to be incorrect for x86_64-pc-cygwin. Tested with gcc
5.4.0 and gdb 7.10.1 (current cygwin versions) on x86_64-pc-cygwin running
under Windows 10.
Please refer to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80777 for
discussion whether gcc or gdb is incorrectly configured. In particular
comment-8 there.
Also refer to https://bugzilla.redhat.com/show_bug.cgi?id=518712 which
describes the same issue under Linux. Repeating the same test described in
comment-1 there when run under x86_64-pc-cygwin gets the wrong answer:
$ gdb
GNU gdb (GDB) (Cygwin 7.10.1-1) 7.10.1
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-cygwin".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) show arch
The target architecture is set automatically (currently i386)
(gdb) set arch
Requires an argument. Valid arguments are i386, i386:x86-64, i386:x64-32,
i8086, i386:intel, i386:x86-64:intel, i386:x64-32:intel, i386:nacl,
i386:x86-64:nacl, i386:x64-32:nacl, auto.
(gdb) set arch i386:x86-64
The target architecture is assumed to be i386:x86-64
(gdb) print sizeof(long)
$1 = 4
(gdb) print sizeof(long long)
$2 = 8
(gdb) print sizeof(long*)
$3 = 8
(gdb) q
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>From gdb-prs-return-21385-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu May 18 12:29:16 2017
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Subject: [Bug build/21500] gdb sizeof(long int)=4 but gcc sizeof(long int)=8
on x86_64-pc-cygwin
Date: Thu, 18 May 2017 12:29:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
The problem is that while Cygwin and MinGW ABIs are different, GDB assumes
they're the same.
amd64-windows-tdep.c has:
/* On Windows, "long"s are only 32bit. */
set_gdbarch_long_bit (gdbarch, 32);
and this gdbarch is used by both Cygwin and MinGW.
We need a new "show osabi" value for "Windows" (MinGW), and then come up with
some way to figure out automatically from the program binary which of the ABIs
is in effect. Looking at the dll import list for the cygwin dll may be a good
enough approximation. (And add a hardcoded case for the cygwin dll itself.)
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>From gdb-prs-return-21386-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu May 18 12:40:37 2017
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Subject: [Bug breakpoints/21497] FreeBSD: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Thanks for that analysis, that helps a lot.
> So far so good, everything is setup to single-step LWP 102181. However,
> because it is single stepping, it is expecting to only receive events about
> that thread. However, there was already a thread-create event pending when the
> breakpoint occurred. Therefore the next event that gets returned from pthread > is actually a create for a different thread.
That's the problem then. The backend should not report stop events to the core
for threads that the core did not resume. So until the core of GDB sends a
wildcard "resume the whole process" resumption request, the backend should hold
that event pending somehow.
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Dup.
*** This bug has been marked as a duplicate of bug 21449 ***
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
*** Bug 21450 has been marked as a duplicate of this bug. ***
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Tom Tromey <tromey at sourceware dot org> changed:
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
> The bug was fixed in gdb's git repository, commit b96645f1a1e608 "Add support for untagged unions in Rust", but is present in version 7.12 and 7.12.1.
I think there won't be another 7.12.x release, so I'm closing this,
since I understand it to be fixed for 8.0.
If this is in error, please reopen, thanks.
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Subject: [Bug rust/21185] add i128 and u128 support to rust
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I tried a hack that typedefs LONGEST and ULONGEST using __int128.
This found a couple of type errors in the source.
Unfortunately the resulting gdb doesn't seem to work properly.
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Subject: [Bug rust/21185] add i128 and u128 support to rust
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
I fixed up a few things and I'm sending this through the buildbot.
I wonder though if this makes sense to put in.
And, I wonder if my simple changes are really sufficient, given
what I've already had to patch.
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
And, hah, the results are really bad.
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
I expect you'll run into lots of assumptions that LONGEST == 64-bit.
Do many places in the codebase need to learn about the types? What does the
hack spare you from doing manually? Arithmetic?
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a1cc26f6c36117f7abbd1e7d347030c37ebb30b6
commit a1cc26f6c36117f7abbd1e7d347030c37ebb30b6
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Fri May 19 14:01:50 2017 +0200
Fix tui compilation with Solaris libcurses: non-const last arg to mvwaddstr
(PR tui/21482)
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
Solaris
Date: Fri, 19 May 2017 12:19:00 -0000
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7a6e7fcc77997bf7679cce4f1cfebcd57ba8af70
commit 7a6e7fcc77997bf7679cce4f1cfebcd57ba8af70
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Fri May 19 14:16:55 2017 +0200
Fix tui compilation with Solaris libcurses: non-const last arg to mvwaddstr
(PR tui/21482)
On both mainline and the 8.0 branch, gdb compilation fails on Solaris 10
with the native libcurses in gdb/tui for several instances of the same
problem:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c: In function
`void tui_erase_source_content(tui_win_info*, int)':
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c:257:18:
error: invalid conversion from `const char*' to `char*' [-fpermissive]
no_src_str);
^
In file included from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/gdb_curses.h:42:0,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-data.h:26,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-winsource.c:33:
/vol/gcc-7/lib/gcc/sparc-sun-solaris2.10/7.1.0/include-fixed/curses.h:699:12:
note: initializing argument 4 of `int mvwaddstr(WINDOW*, int, int, char*)'
extern int mvwaddstr(WINDOW *, int, int, char *);
^~~~~~~~~
make[2]: *** [Makefile:1927: tui-winsource.o] Error 1
Unlike ncurses, <curses.h> declares
extern int mvwaddstr(WINDOW *, int, int, char *);
i.e. the last arg is char *, not const char *.
The patch fixes this by casting the last arg to mvwaddstr to char *,
as was recently done on mainline in a newterm() call (the only
difference between 8.0 and mainline gdb/tui).
* tui/tui-windata.c (tui_erase_data_content): Cast last mvwaddstr
arg to char *.
* tui/tui-wingeneral.c (box_win): Likewise.
* tui/tui-winsource.c (tui_erase_source_content): Likewise.
(tui_show_source_line): Likewise.
(tui_show_exec_info_content): Likewise.
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
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Date: Fri, 19 May 2017 13:06:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=814385bb257fec68e0e64d43f2ccc40e219342e7
commit 814385bb257fec68e0e64d43f2ccc40e219342e7
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Fri May 19 15:03:52 2017 +0200
Fix tui compilation with Solaris libcurses: clear define (PR tui/21482)
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Subject: [Bug tui/21482] gdb 8.0 tui doesn't build with native curses on
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Date: Fri, 19 May 2017 13:10:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6e7e1744e96abbf1a4229d5f269caf2cc921ec58
commit 6e7e1744e96abbf1a4229d5f269caf2cc921ec58
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Fri May 19 15:08:45 2017 +0200
Fix tui compilation with Solaris libcurses: clear define (PR tui/21482)
On both mainline and the 8.0 branch, gdb compilation fails on Solaris 10
with the native libcurses like this:
In file included from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/gdb_curses.h:42:
0,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-data.h:2
6,
from
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c
:31:
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c: In function
`CORE_A
DDR tui_disassemble(gdbarch*, tui_asm_line*, CORE_ADDR, int)':
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c:71:19: error:
`class
string_file' has no member named `wclear'; did you mean `clear'?
gdb_dis_out.clear ();
^
/vol/src/gnu/gdb/gdb-8.0-branch/local/gdb/tui/tui-disasm.c:78:19: error:
`class
string_file' has no member named `wclear'; did you mean `clear'?
gdb_dis_out.clear ();
^
make[2]: *** [Makefile:1927: tui-disasm.o] Error 1
It turned out this happens because <curses.h> has
#define clear() wclear(stdscr)
This can be avoided by defining NOMACROS, which the patch below does.
ncurses potentially has a similar problem, which can be avoided by defining
NCURSES_NOMACROS.
PR tui/21482
* gdb_curses.h (NOMACROS): Define.
(NCURSES_NOMACROS): Define.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Fri, 19 May 2017 15:34:00 -0000
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--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #4)
> I expect you'll run into lots of assumptions that LONGEST == 64-bit.
Yeah. There were some spots in a few tdeps that assume that CORE_ADDR
and ULONGEST are the same type. aarch64-tdep helpfully had self-tests
pointing out some invalid assumptions -- not so with the other ones.
And print-utils makes 64 bit assumptions.
> Do many places in the codebase need to learn about the types? What does the
> hack spare you from doing manually? Arithmetic?
I don't have a complete overview of the situation, but some things:
* Printing a 128-bit integer doesn't work well right now.
... but that's print-utils, which currently use LONGEST/ULONGEST.
Could be done manually for Rust, but since GCC has __int128 that
doesn't seem best.
* Arithmetic. This maybe means reimplementing a bunch of the value API?
E.g. value_as_long returns a LONGEST.
Could operate on the bytes instead, GMP-style.
Hmm, maybe that's all I've got so far.
I pushed the int-128 branch to my github in case you want to take a peek.
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From: "jlott1 at yahoo dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21497] FreeBSD: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Fri, 19 May 2017 16:27:00 -0000
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--- Comment #2 from jlott1 at yahoo dot com ---
I did a little more digging. I think the problem is that a brand-new thread is
non-suspended by default. GDB has not yet been informed about this nascent
thread, so it doesn't know to suspend it when it suspends the other threads for
single-step mode. As a workaround, I keep track in fbsd-nat.c if we are in
single-stepping mode. If I'm informed of a new thread while single-stepping, I
suspend the new thread and continue the process directly. I report the event
itself as an "ignore" to the core. I'll attach the patch. The code could use a
little improvement (use of the global var in particular is probably not good
for multiple inferiors), but it shows the basic idea.
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Subject: [Bug breakpoints/21497] FreeBSD: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
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--- Comment #3 from jlott1 at yahoo dot com ---
Created attachment 10058
--> https://sourceware.org/bugzilla/attachment.cgi?id=10058&action=edit
workaround patch
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Subject: [Bug breakpoints/21497] FreeBSD: infrun.c:5565: internal-error: int
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--- Comment #4 from jhb at FreeBSD dot org ---
I have an old patch to try to fix a similar crash for kernels without LWP
events that still didn't work in my testing. Rather than depending on a
global, I ended up using the ptid passed to fbsd_resume. However, the patch
also avoided adding new threads until single stepping was disabled. In
particular, I wanted to be sure I didn't "lose" the event from the new thread
(in case the new thread had just hit a breakpoint and thus needed to be
single-stepped across it). Perhaps that is unnecessary as the new thread would
simply repeat the breakpoint though when it is resumed.
https://github.com/bsdjhb/gdb/compare/fbsd_single_step_thr
(That patch doesn't work for LWP events so would need reworking anyway, but it
sounds like I'd need to handle it for both cases now anyway which might
simplify the logic a bit. For the non-LWP event case if I don't care about
reporting the event I can probably even just PT_SUSPEND the new LWP and ignore
it and later come back to it).
FYI, if you disable LWP events by hand in fbsd-nat.c do you still get the same
issue?
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Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Fri, 19 May 2017 19:07:00 -0000
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
I'm having mixed feelings about LONGEST->__int128 :-( A lot of code uses
(U)LONGEST for indexes, sizes and also to hold register values. Most of these
places won't ever need the extended precision. I'm not sure whether forcing
everything to use 128-bit is a good idea, both efficiency/ABI -wise, and
memory-space wise. :-/
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Fri, 19 May 2017 19:35:00 -0000
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--- Comment #7 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #6)
> I'm having mixed feelings about LONGEST->__int128 :-( A lot of code uses
> (U)LONGEST for indexes, sizes and also to hold register values. Most of
> these places won't ever need the extended precision. I'm not sure whether
> forcing everything to use 128-bit is a good idea, both efficiency/ABI -wise,
> and memory-space wise. :-/
Yes, I agree. I took this approach because I thought there was a chance
that I could get 128-bit support working this way; because my feeling is
that the other ways are probably difficult.
What would be a better plan?
Printing seems reasonably contained, perhaps. We could introduce
analogues of the print-utils functions that work on gdb_byte arrays,
supporting larger widths (avoiding the need for __int128 on the host).
I suppose there aren't many spots that would need to be changed to make
this work.
Arithmetic seems difficult. Maybe a new type for this, then (the hard part)
change various places to use the new type rather than (U)LONGEST?
It seems like it would hard to even find the places, unless maybe the new
type was a class that did not allow conversions from integer types.
Hmm...
I wonder if the Python layer also needs updates to be able to represent
such values in Python.
This sounds like a project probably out of reach of my free time.
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Subject: [Bug rust/21484] watch -location does not work with rust
Date: Sat, 20 May 2017 04:14:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=43cc5389bc4662b31cad02a9f13358bd367d0ab3
commit 43cc5389bc4662b31cad02a9f13358bd367d0ab3
Author: Tom Tromey <tom@tromey.com>
Date: Sun May 14 11:12:14 2017 -0600
Use watchpoint's language when re-parsing expression
PR rust/21484 notes that watch -location does not work with Rust:
(gdb) watch -location a
syntax error in expression, near `) 0x00007fffffffe0f4'.
update_watchpoint tries to tell gdb that the new expression it creates
has C syntax:
/* The above expression is in C. */
b->language = language_c;
However, update_watchpoint doesn't actually use this language when
re-parsing the expression.
Originally I was going to fix this by saving and restoring the
language in update_watchpoint, but this regressed
gdb.dlang/watch-loc.exp, because the constructed expression actually
has D syntax (specifically the name is not parseable by C).
Next I looked at directly constructing an expression, and not relying
on the parser at all; but it seemed to me that upon a re-set, we'd
want to reparse the type, and there is no existing API to do this
correctly.
So, in the end I made a hook to let each language choose what
expression to use. I made all the languages other than Rust use the C
expression, because that is the status quo ante. However, this is
probably not truly correct. After this patch, at least, it is easy to
correct by someone who knows the language(s) in question.
Regtested by the buildbot.
ChangeLog
2017-05-19 Tom Tromey <tom@tromey.com>
PR rust/21484:
* rust-lang.c (exp_descriptor_rust): New function.
(rust_language_defn): Use it.
* p-lang.c (pascal_language_defn): Update.
* opencl-lang.c (opencl_language_defn): Update.
* objc-lang.c (objc_language_defn): Update.
* m2-lang.c (m2_language_defn): Update.
* language.h (struct language_defn)
<la_watch_location_expression>: New member.
* language.c (unknown_language_defn, auto_language_defn)
(local_language_defn): Update.
* go-lang.c (go_language_defn): Update.
* f-lang.c (f_language_defn): Update.
* d-lang.c (d_language_defn): Update.
* c-lang.h (c_watch_location_expression): Declare.
* c-lang.c (c_watch_location_expression): New function.
(c_language_defn, cplus_language_defn, asm_language_defn)
(minimal_language_defn): Use it.
* breakpoint.c (watch_command_1): Call
la_watch_location_expression.
* ada-lang.c (ada_language_defn): Update.
testsuite/ChangeLog
2017-05-19 Tom Tromey <tom@tromey.com>
PR rust/21484:
* gdb.rust/watch.exp: New file.
* gdb.rust/watch.rs: New file.
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Subject: [Bug gdb/21506] New: python execute(to_string=True) no longer
captures certain output since e7ea3ec7
Date: Sat, 20 May 2017 14:55:00 -0000
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Bug ID: 21506
Summary: python execute(to_string=True) no longer captures
certain output since e7ea3ec7
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python gdb.execute(to_string=True) no longer captures all output, in particular
for the 'step' command, since f7c382926d. This is limits functionality, e.g.
http://stackoverflow.com/questions/39602306/tracing-program-function-execution-on-source-line-level
Expected result (f7c382926d)
$ ./gdb/gdb ../a.out
GNU gdb (GDB) 7.11.50.20160331-git
Reading symbols from ../a.out...done.
(gdb) break main
Breakpoint 1 at 0x4004aa: file test.c, line 3.
(gdb) run
Starting program: /home/tilsche/code/gdb/a.out
Breakpoint 1, main () at test.c:3
3 return 4;
(gdb) python x = gdb.execute('step', to_string=True)
(gdb) python print(x)
4 }
Result since e7ea3ec7c6
$ ./gdb/gdb ../a.out
GNU gdb (GDB) 7.11.50.20160331-git
Reading symbols from ../a.out...done.
(gdb) break main
Breakpoint 1 at 0x4004aa: file test.c, line 3.
(gdb) run
Starting program: /home/tilsche/code/gdb/a.out
Breakpoint 1, main () at test.c:3
3 return 4;
(gdb) python x = gdb.execute('step', to_string=True)
4 }
(gdb) python print(x)
Test code:
int main()
{
return 4;
}
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Subject: [Bug rust/21466] better printing of unsized types
Date: Sun, 21 May 2017 19:09:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Printing the array's address is intentional, see generic_val_print_array.
I suppose the idea is that we can't be sure there's even a single element.
Maybe there's something better the rust code could print here, but
I don't know what that might be at this point.
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Subject: [Bug rust/21484] watch -location does not work with rust
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
I'm probably not going to try to get this into 8.0.
There's still no post-8.0 target milestone though.
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Subject: [Bug rust/21466] better printing of unsized types
Date: Sun, 21 May 2017 23:03:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e6cf65f283b8be44014fad0ad0aebfbcc71fceac
commit e6cf65f283b8be44014fad0ad0aebfbcc71fceac
Author: Tom Tromey <tom@tromey.com>
Date: Sun May 21 17:00:10 2017 -0600
Print Rust unsized array types a bit more nicely
It's a bit difficult to create an unsized array type in Rust, but if
you do, right now ptype will show something like "[u8; ]". It really
should print "[u8]", though, which is what this patch implements.
This is part of PR 21466.
Built and regtested on x86-64 Fedora 25. I'm checking this in.
ChangeLog
2017-05-21 Tom Tromey <tom@tromey.com>
PR rust/21466:
* rust-lang.c (rust_print_type) <TYPE_CODE_ARRAY>: Print unsized
arrays as "[T]", not "[T; ]".
testsuite/ChangeLog
2017-05-21 Tom Tromey <tom@tromey.com>
PR rust/21466:
* gdb.rust/unsized.exp: New file.
* gdb.rust/unsized.rs: New file.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21466] better printing of unsized types
Date: Sun, 21 May 2017 23:04:00 -0000
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
I'm leaving this one open until I decide what, if anything, to do
about printing these values.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Mon, 22 May 2017 03:20:00 -0000
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--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
Maybe printing doesn't need much attention, since now I see
the print_*_chars family of functions in valprint.c.
Weird that I've never run into these before.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Mon, 22 May 2017 15:49:00 -0000
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--- Comment #9 from Pedro Alves <palves at redhat dot com> ---
> It seems like it would hard to even find the places, unless maybe the new
> type was a class that did not allow conversions from integer types.
> Hmm...
Yeah, I think a class (plus arithmetic operators) would be what I'd try too.
Maybe we could borrow gcc's wide_int (or parts of it).
Not sure about disabling conversions from integer types. I'd assume it to be
handy, to allow natural initialization from 0 and 1 [integer foo = 1;], etc.
I'd think that it's conversion to (narrower) integer types that would be an
issue.
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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Subject: [Bug rust/21185] add i128 and u128 support to rust
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--- Comment #10 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #9)
> > It seems like it would hard to even find the places, unless maybe the new
> > type was a class that did not allow conversions from integer types.
> > Hmm...
>
> Yeah, I think a class (plus arithmetic operators) would be what I'd try too.
>
> Maybe we could borrow gcc's wide_int (or parts of it).
>
> Not sure about disabling conversions from integer types. I'd assume it to
> be handy, to allow natural initialization from 0 and 1 [integer foo = 1;],
> etc. I'd think that it's conversion to (narrower) integer types that would
> be an issue.
Yeah, duh, that makes sense.
I've got some cleanups to the scalar printing code that might be useful.
Not quite done -- there's some weird stuff in there.
I haven't looked at the arithmetic stuff.
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Subject: [Bug gdb/21515] New: Segmentation fault when gdb is started
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Bug ID: 21515
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Look here: https://github.com/pwndbg/pwndbg/issues/286
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Subject: [Bug rust/21185] add i128 and u128 support to rust
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--- Comment #11 from Tom Tromey <tromey at sourceware dot org> ---
This is pretty close, I think, but it turns out there are some tests
that rely on the current behavior where gdb will print 128 bit values
with zero padding; whereas the patch series I have turns this off.
Updating the tests isn't too bad, so far, but since some occur in
arch-specific tests I suspect there will be some that I can't test.
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https://sourceware.org/bugzilla/show_bug.cgi?id=11335
--- Comment #8 from Peter Linss <peter at elemental dot software> ---
Patch sumbitted
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From: "peter at elemental dot software" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/11335] -var-evaluate-expression should return the pretty
printer's to_string result
Date: Thu, 25 May 2017 02:53:00 -0000
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Peter Linss <peter at elemental dot software> changed:
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--- Comment #7 from Peter Linss <peter at elemental dot software> ---
Created attachment 10068
--> https://sourceware.org/bugzilla/attachment.cgi?id=10068&action=edit
Patch to always call to_string for pretty-printers
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From: "82369082 at qq dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21515] Segmentation fault when gdb is started
Date: Thu, 25 May 2017 14:50:00 -0000
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--- Comment #1 from 82369082 at qq dot com ---
Hi, when I use python3.5 in GDB, the _rl_screenwidth is assigned a wrong value.
== _rl_get_screen_size(): _rl_screenwidth: 0
== _rl_get_screen_size(): _rl_screenwidth: 175
== rl_get_screen_size(): _rl_screenwidth: 175, _rl_screenheight: 47
== init_page_info(): rows 47, cols 175
== _rl_set_screen_size(): rows: 47, cols: 175, _rl_screenwidth: 175
== _rl_set_screen_size(): _rl_screenwidth: 174
GNU gdb (GDB) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-pc-linux-gnu --target=arm-linux".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) python
>import gdb
>gdb.execute('set debug-file-directory %s' % "nihaoma", to_string=True, from_tty=False)
>end
=== execute_command_to_string(): p: set debug-file-directory nihaoma
== init_page_info(): rows -1, cols -1
== _rl_set_screen_size(): rows: 2147483647, cols: 2147483647, _rl_screenwidth:
174
== _rl_set_screen_size(): _rl_screenwidth: 2147483646
== _rl_set_screen_size(): rows: 47, cols: 175, _rl_screenwidth: 2147483646
== _rl_set_screen_size(): _rl_screenwidth: 174
(gdb)
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From: "anton at samba dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21526] New: powerpc64: gdb should use local entry point
symbol instead of loosely parsing instructions
Date: Thu, 25 May 2017 23:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21526
Bug ID: 21526
Summary: powerpc64: gdb should use local entry point symbol
instead of loosely parsing instructions
Product: gdb
Version: unknown
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gdb isn't using the local entry point when stepping over the global entry
point. An example:
#include <ppc-asm.h>
.text
FUNC_START(main)
.rept 8
addpcis r3,0
ori r3,r3,0
.endr
blr
FUNC_END(main)
(gdb) break main
Breakpoint 1 at 0x7c8
(gdb) run
Starting program: /tmp/f
Breakpoint 1, 0x00000000200007c8 in main ()
(gdb) disassemble
Dump of assembler code for function main:
0x0000000020000780 <+0>: addis r2,r12,2
0x0000000020000784 <+4>: addi r2,r2,30592
0x0000000020000788 <+8>: lnia r3
0x000000002000078c <+12>: ori r3,r3,0
0x0000000020000790 <+16>: lnia r3
0x0000000020000794 <+20>: ori r3,r3,0
0x0000000020000798 <+24>: lnia r3
0x000000002000079c <+28>: ori r3,r3,0
0x00000000200007a0 <+32>: lnia r3
0x00000000200007a4 <+36>: ori r3,r3,0
0x00000000200007a8 <+40>: lnia r3
0x00000000200007ac <+44>: ori r3,r3,0
0x00000000200007b0 <+48>: lnia r3
0x00000000200007b4 <+52>: ori r3,r3,0
0x00000000200007b8 <+56>: lnia r3
0x00000000200007bc <+60>: ori r3,r3,0
0x00000000200007c0 <+64>: lnia r3
0x00000000200007c4 <+68>: ori r3,r3,0
=> 0x00000000200007c8 <+72>: blr
End of assembler dump.
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Subject: [Bug gdb/21527] New: macro expand not correct after #undef and
#define
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Macro expansion does not honor #undef and #define, it seems to only use the
first #define encountered for a given macro name
in dwarves.h
dwarf(Dopey)
dwarf(Doc)
dwarf(Sleepy)
dwarf(Bashful)
dwarf(Happy)
dwarf(Sneezy)
dwarf(Grumpy)
in forest.c
main() {
printf("Deep in the forest.\n");
#define dwarf(name) printf("There was a dwarf named %s.\n",#name);
#include <dwarves.h>
// as you debug next will take you across each line of dwarves.h and expand
properly
#undef dwarf
int namelength[10]={0};
#define dwarf(name) namelength[strlen(#Name)]++;
#include <dwarves.h>
// as you debug here, "macro expand dwarf(Sleepy)" shows the printf not the ++
#undef
for (nl=0;nl<(sizeof(namelength)/sizeof(namelength[0]);nl++)
if (namelength[nl])
printf("%d dwarf/dwarves have name(s) %d letters long\n",
namelength[nl],nl):
}
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>From gdb-prs-return-21421-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue May 30 01:35:11 2017
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Subject: [Bug cli/19551] weird "reading symbols" output
Date: Tue, 30 May 2017 01:35:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
One attempt:
https://sourceware.org/ml/gdb-patches/2017-04/msg00388.html
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Subject: [Bug gdb/20948] --write option to GDB causes segmentation fault
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--- Comment #2 from jbm at bachmeier dot cc ---
Created attachment 10078
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Full reproduction example
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>From gdb-prs-return-21423-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 31 12:22:16 2017
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Subject: [Bug gdb/20948] --write option to GDB causes segmentation fault
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Comment on attachment 10078
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Full reproduction example
This indeed seems to be a problem in libbfd. I was encountered the problem
while using the library.
The segfault seems to occur when opening a file for both reading and writing.
Minimal example:
$ cat bfdbug.c
#include<bfd.h>
// Error checks omitted for clarity, see attachment
int main(int argc, char **argv) {
bfd *abfd = bfd_fopen(argv[1], "default", "r+", -1);
bfd_check_format(abfd, bfd_object);
bfd_close(abfd);
}
$ gcc bfdbug.c -g -lbfd -o bfdbug
$ cp bfdbug test.elf
$ gdb bfdbug
GNU gdb (Ubuntu 7.12.50.20170314-0ubuntu1) 7.12.50.20170314-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Type "show configuration" for configuration details.
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Reading symbols from bfdbug...done.
(gdb) run test.elf
Starting program: /home/bachme/bt-cgp/cgp/bfdbug test.elf
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b1f391 in _bfd_elf_strtab_finalize () from
/usr/lib/x86_64-linux-gnu/libbfd-2.28-system.so
(gdb) where
#0 0x00007ffff7b1f391 in _bfd_elf_strtab_finalize () from
/usr/lib/x86_64-linux-gnu/libbfd-2.28-system.so
#1 0x00007ffff7b01a17 in _bfd_elf_write_object_contents () from
/usr/lib/x86_64-linux-gnu/libbfd-2.28-system.so
#2 0x00007ffff7adff87 in bfd_close () from
/usr/lib/x86_64-linux-gnu/libbfd-2.28-system.so
#3 0x0000555555554856 in main (argc=2, argv=0x7fffffffe588) at bfdbug.c:7
(gdb)
When using "w" or "r" instead of "r+" as the mode argument to bfd_fopen (or
using bfd_openr/bfd_openw instead), no error ocurrs (even when adding symbols
to the symtab / strtab) before closing.
Binutils version:
$ objdump -V
GNU objdump (GNU Binutils for Ubuntu) 2.28
Copyright (C) 2017 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) any later version.
This program has absolutely no warranty.
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>From gdb-prs-return-21424-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 31 13:03:54 2017
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From: "wdijkstr at arm dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/21535] New: gdb fails to build with GCC trunk
Date: Wed, 31 May 2017 13:03:00 -0000
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Bug ID: 21535
Summary: gdb fails to build with GCC trunk
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: wdijkstr at arm dot com
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Typical error messages are:
In file included from
/native-arm-none-linux-gnueabihf/build/src/binutils-gdb/gdb/inferior.h:41:0,
from
/native-arm-none-linux-gnueabihf/build/src/binutils-gdb/gdb/arm-tdep.c:25:
/native-arm-none-linux-gnueabihf/build/src/binutils-gdb/gdb/target.h:102:8:
error: using template type parameter 'const _Alloc' after 'struct'
struct syscall
^~~~~~~
There are many similar messages.
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>From gdb-prs-return-21425-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 31 17:33:22 2017
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From: "wdijkstr at arm dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/21535] gdb fails to build with GCC trunk
Date: Wed, 31 May 2017 17:33:00 -0000
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Wilco <wdijkstr at arm dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from Wilco <wdijkstr at arm dot com> ---
Looks like this was an odd frontend bug in GCC r248686 but it is fixed after
r248687. Closing.
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>From gdb-prs-return-21426-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 31 20:02:28 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Wed, 31 May 2017 20:02:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simon.marchi at ericsson dot com
--- Comment #4 from Simon Marchi <simon.marchi at ericsson dot com> ---
Hi Brian,
My guess is that GDB is stuck in an infinite loop trying to unwind the
stacks/generate the backtraces. One would need to step into GDB itself to
understand what's going wrong. I'll try to rebuild the Ubuntu package for vim,
generate some core and see if I can reproduce the issue.
Simon
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>From gdb-prs-return-21427-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed May 31 21:32:47 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Wed, 31 May 2017 21:32:00 -0000
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--- Comment #5 from Simon Marchi <simon.marchi at ericsson dot com> ---
(In reply to Simon Marchi from comment #4)
> Hi Brian,
>
> My guess is that GDB is stuck in an infinite loop trying to unwind the
> stacks/generate the backtraces. One would need to step into GDB itself to
> understand what's going wrong. I'll try to rebuild the Ubuntu package for
> vim, generate some core and see if I can reproduce the issue.
>
> Simon
I wasn't able to reproduce the problem using GNU gdb (GDB) 8.0.50.20170531-git
. I suppose it needs a particular situation for it to trigger. If you find a
way to reproduce easily, please share it.
Simon
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>From gdb-prs-return-21428-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 01 09:21:38 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
used
Date: Thu, 01 Jun 2017 09:21:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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CC| |palves at redhat dot com
--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
> strace: [ Process PID=16418 runs in x32 mode. ]
Does this mean that the GDB that hangs is built as a x32 process?
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>From gdb-prs-return-21429-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 01 09:22:07 2017
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
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--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
Brian, I assume you're detecting the hangs and killing GDB. Any chance you can
attach another GDB to the hung GDB before killing it, and get a "thread apply
all bt" so can we see where is GDB stuck?
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>From gdb-prs-return-21430-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 01 10:14:44 2017
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From: "jbm at bachmeier dot cc" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20948] --write option to GDB causes segmentation fault
Date: Thu, 01 Jun 2017 10:14:00 -0000
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--- Comment #4 from jbm at bachmeier dot cc ---
This is a null-ptr dereference in bfd/elf-strtab.c:367, resulting from a
null-ptr stringtab extracted in bfd/elf.c:6272.
elf_shstrtab(abfd) == abfd->tdata.elf_obj_data->o->strtab_ptr == NULL
I don't know any BFD internals, so I sadly can't investigate this further.
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--- Comment #8 from brian at ubuntu dot com <brian at ubuntu dot com> ---
I attached to the hung gdb process which was trying to retrace a crash from
kodi. I then ran thread apply all bt and observed the following:
(gdb) thread apply all bt
Thread 1 (Thread 0x7fd6d1f41780 (LWP 8736)):
#0 0x000055e6d9b0503d in ?? ()
#1 0x000055e6d9b0547f in ?? ()
#2 0x000055e6d9afe451 in ?? ()
#3 0x000055e6d9b041da in ?? ()
#4 0x000055e6d9b01221 in ?? ()
#5 0x000055e6d9b01f8a in ?? ()
#6 0x000055e6d9ae62bf in ?? ()
#7 0x000055e6d9aee9d1 in ?? ()
#8 0x000055e6d9ae60d8 in ?? ()
#9 0x000055e6d9ae8265 in ?? ()
#10 0x000055e6d9ae60a8 in ?? ()
#11 0x000055e6d9ae58cc in ?? ()
#12 0x000055e6d9ae467d in ?? ()
#13 0x000055e6d9ad81d2 in ?? ()
#14 0x000055e6d9ae4979 in ?? ()
#15 0x000055e6d9ae42e6 in ?? ()
#16 0x000055e6d9bdbbae in ?? ()
#17 0x000055e6d9bdae0a in ?? ()
#18 0x000055e6d9c2eea1 in ?? ()
#19 0x000055e6d9c2f0d1 in ?? ()
#20 0x000055e6d9a4dfaf in ?? ()
#21 0x000055e6d9ac7bb4 in ?? ()
#22 0x000055e6d9ac7ff6 in ?? ()
#23 0x000055e6d9ac2416 in ?? ()
#24 0x000055e6d9abe95c in ?? ()
#25 0x000055e6d9b30576 in ?? ()
#26 0x000055e6d9b300c0 in ?? ()
#27 0x000055e6d9b31c4b in ?? ()
#28 0x000055e6d9b3233d in ?? ()
#29 0x000055e6d9b324d3 in ?? ()
#30 0x000055e6d9b32b26 in ?? ()
#31 0x000055e6d9ac88a7 in ?? ()
#32 0x000055e6d9ac8a43 in ?? ()
#33 0x000055e6d9acf3ba in ?? ()
#34 0x000055e6d9c1532c in ?? ()
#35 0x000055e6d9c15ef7 in ?? ()
#36 0x000055e6d9c1713c in ?? ()
#37 0x000055e6d9c165a5 in ?? ()
#38 0x000055e6d9c189c2 in ?? ()
#39 0x000055e6d9c18ddb in ?? ()
#40 0x000055e6d99744d4 in ?? ()
#41 0x000055e6d9977861 in ?? ()
#42 0x000055e6d9c5dc50 in ?? ()
#43 0x000055e6d9c592a7 in ?? ()
#44 0x000055e6d99744d4 in ?? ()
#45 0x000055e6d9977861 in ?? ()
#46 0x000055e6d9c5dc50 in ?? ()
#47 0x000055e6d9b1df2a in ?? ()
#48 0x000055e6d9b1e337 in ?? ()
#49 0x000055e6d9b1d80e in ?? ()
#50 0x00007fd6d1b46d73 in rl_callback_read_char () from
/lib/x86_64-linux-gnu/libreadline.so.7
#51 0x000055e6d9b1d6fa in ?? ()
#52 0x000055e6d9b1d779 in ?? ()
#53 0x000055e6d9b1ddc1 in ?? ()
#54 0x000055e6d9b1c097 in ?? ()
#55 0x000055e6d9b1c660 in ?? ()
#56 0x000055e6d9b1b3d6 in ?? ()
#57 0x000055e6d9b1b41d in ?? ()
#58 0x000055e6d9b998ac in ?? ()
#59 0x000055e6d9b1f460 in ?? ()
---Type <return> to continue, or q <return> to quit---
#60 0x000055e6d9b9af03 in ?? ()
#61 0x000055e6d9b9af3b in ?? ()
#62 0x000055e6d98a9d39 in ?? ()
#63 0x00007fd6cfaa43f1 in __libc_start_main (main=0x55e6d98a9ce0, argc=13,
argv=0x7ffe07075828, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffe07075818) at ../csu/libc-start.c:291
#64 0x000055e6d98a9bda in ?? ()
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
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Date: Thu, 01 Jun 2017 21:20:00 -0000
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--- Comment #9 from brian at ubuntu dot com <brian at ubuntu dot com> ---
I tried the same process, attaching gdb to the hung gdb which was this time
retracing a core file from vim, and the output was similar to that with the
kodi core file.
Here's a snippet:
Thread 1 (Thread 0x7f6ab8dd8780 (LWP 10437)):
#0 0x0000559fa47219ce in ?? ()
...
#59 0x00007f6ab89ddd73 in rl_callback_read_char () from
/lib/x86_64-linux-gnu/libreadline.so.7
60 0x0000559fa475a6fa in ?? ()
#61 0x0000559fa475a779 in ?? ()
#62 0x0000559fa475adc1 in ?? ()
#63 0x0000559fa4759097 in ?? ()
#64 0x0000559fa4759660 in ?? ()
#65 0x0000559fa47583d6 in ?? ()
#66 0x0000559fa475841d in ?? ()
#67 0x0000559fa47d68ac in ?? ()
#68 0x0000559fa475c460 in ?? ()
#69 0x0000559fa47d7f03 in ?? ()
#70 0x0000559fa47d7f3b in ?? ()
#71 0x0000559fa44e6d39 in ?? ()
#72 0x00007f6ab693b3f1 in __libc_start_main (main=0x559fa44e6ce0, argc=13,
argv=0x7ffe65d3fe68, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffe65d3fe58) at
../csu/libc-start.c:291
#73 0x0000559fa44e6bda in ?? ()
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
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--- Comment #10 from brian at ubuntu dot com <brian at ubuntu dot com> ---
Created attachment 10080
--> https://sourceware.org/bugzilla/attachment.cgi?id=10080&action=edit
output from gdb when attached to gdb hang
I installed debug symbols for gdb and received more detailed information when
running 'thread apply all bt'. I've added it as an attachment since it is
rather lengthy.
Please let me know if there is anything else you need.
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Subject: [Bug breakpoints/19221] Allow setting write watchpoint that trigger
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Matthew Gregan <kinetik at flim dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kinetik at flim dot org
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Subject: [Bug threads/21324] gdb hangs when 'thread apply all bt full' is
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--- Comment #11 from Pedro Alves <palves at redhat dot com> ---
Is that a pristine upstream GDB, or an ubuntu GDB? The reason I ask is that
ubuntu's gdb may have local patches that who knows, might cause this. It'd be
nice to test with current upstream master. That'd also let us know whether the
issue might be fixed already.
Looking at the backtrace, we're in inline_frame_sniffer ->
frame_unwind_register -> dwarf2_tailcall_sniffer_first, and then end up in the
dwarf reader.
Both the inline and tailcall sniffers rely on accurate debug/unwind info.
I can imagine cycles appearing with e.g., bad unwind info.
I'd suspect something odd along those lines.
Also, seeing the two sniffers in the same backtrace is suspicious.
I think the next step would be to determine where exactly is the cycle. I.e.,
once you get a hung gdb, attach to it, and step through the code until you
figure out what's the infinite that never breaks.
I'd disable the frame filters and whatever other scripts gdb may be loading, to
confirm that the problem isn't being triggered by something they're doing. If
that "fixes" the problem, them we have a better idea where to look next.
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Subject: [Bug exp/20991] __int128 type support
Date: Fri, 02 Jun 2017 19:22:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |21185
Depends on| |16225
--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Handling the printing in bug 16225, so maybe this bug could be
for the operations. See some discussion in bug 21185 for how to do that.
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=16225
[Bug 16225] __int128_t types print strangely
https://sourceware.org/bugzilla/show_bug.cgi?id=21185
[Bug 21185] add i128 and u128 support to rust
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Subject: [Bug rust/21185] add i128 and u128 support to rust
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |20991
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=20991
[Bug 20991] __int128 type support
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Subject: [Bug exp/16225] __int128_t types print strangely
Date: Fri, 02 Jun 2017 19:22:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |20991
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=20991
[Bug 20991] __int128 type support
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>From gdb-prs-return-21439-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 02 19:44:39 2017
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Subject: [Bug exp/16225] __int128_t types print strangely
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CC| |tromey at sourceware dot org
Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
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>From gdb-prs-return-21440-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jun 03 12:58:05 2017
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From: "tree1891 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18624] GDB on windows with golang: buildsym_init Assertion
`free_pendings == NULL` failed.
Date: Sat, 03 Jun 2017 12:58:00 -0000
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CC| |tree1891 at gmail dot com
--- Comment #6 from tree1891 at gmail dot com ---
(In reply to Paul C Brown from comment #5)
> Actually, not a bug - just missing a command line argument (at least for
> me). The missing argument is "-d $GOROOT" (I am actually debugging Go).
what argument is it?
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>From gdb-prs-return-21441-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jun 05 15:04:27 2017
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From: "grasshopper at vollbio dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] New: c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Mon, 05 Jun 2017 15:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21549
Bug ID: 21549
Summary: c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const
char*, int, ui_file*, const type_print_options*):
Assertion `TYPE_CODE (args[0].type) == TYPE_CODE_PTR'
failed.
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: grasshopper at vollbio dot de
Target Milestone: ---
GDB exits with exit code 0 and error message (copied from Eclipse console
view):
&"../../../gdb-7.12.1/gdb/c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*, const
type_print_options*): Assertion `TYPE_CODE (args[0].type) == TYPE_CODE_PTR'
failed.\nA problem internal to GDB has been detected,\nfurther debugging may
prove unreliable.\n"
&"\nThis is a bug, please report it."
&" For instructions, see:\n<http://www.gnu.org/software/gdb/bugs/>."
&"\n\n"
717-gdb-exit
GDB is connect to the gdb-server of openocd and thru this to my ARM target.
Stepping through the startup code (assembler code) of my target works, entering
the C++ part (main() routine) leads to the error above.
The error renders the debug session unusable.
I have archive all the sources and the relevant binary, so further tests or
provision of them are possible.
Host OS:
Gentoo Linux
# uname -a
Linux Ghost 4.4.21-gentoo-native-Ghost #3 SMP Sun Mar 19 18:12:33 CET 2017 i686
Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz GenuineIntel GNU/Linux
# arm-none-eabi-gdb --version
GNU gdb (GDB) 7.12.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
# arm-none-eabi-gdb --configuration
This GDB was configured as follows:
configure --host=i686-pc-linux-gnu --target=arm-none-eabi
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/home/lode/e_workspace/Stm32-Universal-Blinky+Shell/Toolchain/src/../arm-mcu-tools/share/gdb
(relocatable)
--with-jit-reader-dir=/home/lode/e_workspace/Stm32-Universal-Blinky+Shell/Toolchain/src/../arm-mcu-tools/lib/gdb
(relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/usr
--without-guile
--with-separate-debug-dir=/home/lode/e_workspace/Stm32-Universal-Blinky+Shell/Toolchain/src/../arm-mcu-tools/lib/debug
(relocatable)
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
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>From gdb-prs-return-21442-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jun 05 15:05:04 2017
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From: "grasshopper at vollbio dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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joluxer <grasshopper at vollbio dot de> changed:
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----------------------------------------------------------------------------
CC| |grasshopper at vollbio dot de
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>From gdb-prs-return-21443-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 06 08:23:05 2017
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From: "grasshopper at vollbio dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #1 from joluxer <grasshopper at vollbio dot de> ---
The occurrence of the error is related to lto optimized code output of gcc
V4.8.2.
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>From gdb-prs-return-21444-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 06 10:41:14 2017
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/21553] New: Double free in gdb when running
gdb.linespec/ls-errs.exp
Date: Tue, 06 Jun 2017 10:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21553
Bug ID: 21553
Summary: Double free in gdb when running
gdb.linespec/ls-errs.exp
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: testsuite
Assignee: unassigned at sourceware dot org
Reporter: thopre01 at gcc dot gnu.org
Target Milestone: ---
Hi,
GDB started to experience some double free issue when executing
gdb.linespec/ls-errs.exp (gdb.linespec/ls-errs.exp: lang=C: break -line 3 1)
somewhere between revisions 0efdc7237e8eb2c75b9c74bc60175ef50719b8b8 and
0af6b29b9dcd8ff2c34d07a76e3416acf3758bfc. The exact error message is:
Error in `<path-to-binutils-gdb-repo>/gdb/gdb': double free or corruption
(fasttop): <some-address>
Please let me know what I can do to help resolve this.
Best regards.
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To: gdb-prs@sourceware.org
Subject: [Bug testsuite/21553] Double free in gdb when running
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |qiyao at gcc dot gnu.org
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
AddressSanitizer shows this problem more clearly,
break -line 3 1^M
=================================================================^M
^[[1m^[[31m==28131==ERROR: AddressSanitizer: attempting double-free on
0x602000138450 in thread T0:^M
^[[1m^[[0m #0 0x2b6671853631 in __interceptor_free
(/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54631)^M
#1 0x82c45e in xfree(void*)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-utils.c:100^M
#2 0x7ced99 in breakpoint::~breakpoint()
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:12740^M
#3 0x7cee1d in breakpoint::~breakpoint()
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:12742^M
#4 0x7e0ee8 in std::default_delete<breakpoint>::operator()(breakpoint*)
const /usr/include/c++/4.9/bits/unique_ptr.h:76^M
#5 0x7e01db in std::unique_ptr<breakpoint, std::default_delete<breakpoint>
>::~unique_ptr() /usr/include/c++/4.9/bits/unique_ptr.h:236^M
#6 0x7bf182 in create_breakpoint_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9328^M
#7 0x7bf4f4 in create_breakpoints_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9378^M
#8 0x7d5cf7 in create_breakpoints_sal_default
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:14368^M
#9 0x7d0355 in bkpt_create_breakpoints_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:13106^M
....
^M
^[[1m^[[32m0x602000138450 is located 0 bytes inside of 2-byte region
[0x602000138450,0x602000138452)^M
^[[1m^[[0m^[[1m^[[35mfreed by thread T0 here:^[[1m^[[0m^M
#0 0x2b6671853631 in __interceptor_free
(/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54631)^M
#1 0x82c45e in xfree(void*)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-utils.c:100^M
#2 0x818844 in do_my_cleanups
/home/yao/SourceCode/gnu/gdb/git/gdb/common/cleanups.c:154^M
#3 0x818925 in do_cleanups(cleanup*)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/cleanups.c:176^M
#4 0x82bad1 in throw_exception_cxx
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-exceptions.c:289^M
#5 0x82bc85 in throw_exception(gdb_exception)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-exceptions.c:317^M
#6 0x82bf0e in throw_it
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-exceptions.c:373^M
#7 0x82bf3d in throw_verror(errors, char const*, __va_list_tag*)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-exceptions.c:379^M
#8 0xbfa572 in verror(char const*, __va_list_tag*)
/home/yao/SourceCode/gnu/gdb/git/gdb/utils.c:432^M
#9 0x9318cd in error(char const*, ...)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/errors.c:43^M
#10 0x7bed8c in init_breakpoint_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9294^M
#11 0x7bf13b in create_breakpoint_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9326^M
#12 0x7bf4f4 in create_breakpoints_sal
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9378^M
#13 0x7d5cf7 in create_breakpoints_sal_default
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:14368^M
....
^M
^[[1m^[[35mpreviously allocated by thread T0 here:^[[1m^[[0m^M
#0 0x2b6671853862 in __interceptor_malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.1+0x54862)^M
#1 0x82c315 in xmalloc
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-utils.c:43^M
#2 0x82cb37 in savestring(char const*, unsigned long)
/home/yao/SourceCode/gnu/gdb/git/gdb/common/common-utils.c:179^M
#3 0x7c067d in find_condition_and_thread
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9594^M
#4 0x7c0fa2 in create_breakpoint(gdbarch*, event_location const*, char*,
int, char*, int, int, bptype, int, auto_boolean, breakpoint_ops const*, int,
int, int, unsigned int)
/home/yao/SourceCode/gnu/gdb/git/gdb/breakpoint.c:9759^M
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Subject: [Bug testsuite/21553] Double free in gdb when running
gdb.linespec/ls-errs.exp
Date: Tue, 06 Jun 2017 13:30:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Caused by:
c1fc2657206188767cb66813d07b9ecbb5e9ec51 is the first bad commit
commit c1fc2657206188767cb66813d07b9ecbb5e9ec51
Author: Simon Marchi <simon.marchi@polymtl.ca>
Date: Fri Jun 2 23:16:21 2017 +0200
C++ify breakpoint class hierarchy (destructors only)
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To: gdb-prs@sourceware.org
Subject: [Bug testsuite/21553] Double free in gdb when running
gdb.linespec/ls-errs.exp
Date: Tue, 06 Jun 2017 13:40:00 -0000
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Valgrind shows:
$valgrind ./gdb ./testsuite/outputs/gdb.linespec/ls-errs/ls-errs -ex "b -line 3
1"
(...)
Reading symbols from ./testsuite/outputs/gdb.linespec/ls-errs/ls-errs...done.
==21622== Invalid free() / delete / delete[] / realloc()
==21622== at 0x4C29CF0: free (vg_replace_malloc.c:530)
==21622== by 0x60BBE5: xfree(void*) (common-utils.c:100)
==21622== by 0x5E12B9: breakpoint::~breakpoint() (breakpoint.c:12740)
==21622== by 0x5E1319: breakpoint::~breakpoint() (breakpoint.c:12742)
==21622== by 0x5E94DB:
std::default_delete<breakpoint>::operator()(breakpoint*) const
(unique_ptr.h:76)
==21622== by 0x5E8CB4: std::unique_ptr<breakpoint,
std::default_delete<breakpoint> >::~unique_ptr() (unique_ptr.h:236)
==21622== by 0x5DA1FD: create_breakpoint_sal(gdbarch*, symtabs_and_lines,
std::unique_ptr<event_location, event_location_deleter>&&, char*, char*, char*,
bptype, bpdisp, int, int, int, breakpoint_ops const*, int, int, int, unsigned
int, int) (breakpoint.c:9317)
==21622== by 0x5DA396: create_breakpoints_sal(gdbarch*, linespec_result*,
char*, char*, bptype, bpdisp, int, int, int, breakpoint_ops const*, int, int,
int, unsigned int) (breakpoint.c:9378)
==21622== by 0x5E4246: create_breakpoints_sal_default(gdbarch*,
linespec_result*, char*, char*, bptype, bpdisp, int, int, int, breakpoint_ops
const*, int, int, int, unsigned int) (breakpoint.c:14368)
==21622== by 0x5E1DB0: bkpt_create_breakpoints_sal(gdbarch*,
linespec_result*, char*, char*, bptype, bpdisp, int, int, int, breakpoint_ops
const*, int, int, int, unsigned int) (breakpoint.c:13106)
==21622== by 0x5DB211: create_breakpoint(gdbarch*, event_location const*,
char*, int, char*, int, int, bptype, int, auto_boolean, breakpoint_ops const*,
int, int, int, unsigned int) (breakpoint.c:9793)
==21622== by 0x5DB731: break_command_1(char*, int, int) (breakpoint.c:9886)
==21622== Address 0x142aaa20 is 0 bytes inside a block of size 2 free'd
==21622== at 0x4C29CF0: free (vg_replace_malloc.c:530)
==21622== by 0x60BBE5: xfree(void*) (common-utils.c:100)
==21622== by 0x603893: do_my_cleanups(cleanup**, cleanup*) (cleanups.c:154)
==21622== by 0x6038EE: do_cleanups(cleanup*) (cleanups.c:176)
==21622== by 0x60B671: throw_exception_cxx(gdb_exception)
(common-exceptions.c:289)
==21622== by 0x60B75A: throw_exception(gdb_exception)
(common-exceptions.c:317)
==21622== by 0x60B8A8: throw_it(return_reason, errors, char const*,
__va_list_tag*) (common-exceptions.c:373)
==21622== by 0x60B8D2: throw_verror(errors, char const*, __va_list_tag*)
(common-exceptions.c:379)
==21622== by 0x7BF75D: verror(char const*, __va_list_tag*) (utils.c:432)
==21622== by 0x67D8C0: error(char const*, ...) (errors.c:43)
==21622== by 0x5DA049: init_breakpoint_sal(breakpoint*, gdbarch*,
symtabs_and_lines, std::unique_ptr<event_location, event_location_deleter>&&,
char*, char*, char*, bptype, bpdisp, int, int, int, breakpoint_ops const*, int,
int, int, unsigned int, int) (breakpoint.c:9294)
==21622== by 0x5DA1BB: create_breakpoint_sal(gdbarch*, symtabs_and_lines,
std::unique_ptr<event_location, event_location_deleter>&&, char*, char*, char*,
bptype, bpdisp, int, int, int, breakpoint_ops const*, int, int, int, unsigned
int, int) (breakpoint.c:9326)
==21622== Block was alloc'd at
==21622== at 0x4C28BF6: malloc (vg_replace_malloc.c:299)
==21622== by 0x60BABF: xmalloc (common-utils.c:43)
==21622== by 0x60BFCF: savestring(char const*, unsigned long)
(common-utils.c:179)
==21622== by 0x5DABBA: find_condition_and_thread(char const*, unsigned long,
char**, int*, int*, char**) (breakpoint.c:9594)
==21622== by 0x5DB084: create_breakpoint(gdbarch*, event_location const*,
char*, int, char*, int, int, bptype, int, auto_boolean, breakpoint_ops const*,
int, int, int, unsigned int) (breakpoint.c:9759)
==21622== by 0x5DB731: break_command_1(char*, int, int) (breakpoint.c:9886)
==21622== by 0x5DBA0A: break_command(char*, int) (breakpoint.c:9947)
==21622== by 0x4CF340: do_cfunc(cmd_list_element*, char*, int)
(cli-decode.c:106)
==21622== by 0x4D225A: cmd_func(cmd_list_element*, char*, int)
(cli-decode.c:1896)
==21622== by 0x7B5B70: execute_command(char*, int) (top.c:674)
==21622== by 0x6FDF66: catch_command_errors(void (*)(char*, int), char*,
int) (main.c:376)
==21622== by 0x6FF131: captured_main_1(captured_main_args*) (main.c:1121)
==21622==
Garbage '1' at end of command
(gdb)
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Subject: [Bug breakpoints/21553] Double free in gdb when running
gdb.linespec/ls-errs.exp
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|testsuite |breakpoints
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21553] Double free in gdb when running
gdb.linespec/ls-errs.exp
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e1e01040aa83ddef0bb5c60a8b187f769b2b1ec3
commit e1e01040aa83ddef0bb5c60a8b187f769b2b1ec3
Author: Pedro Alves <palves@redhat.com>
Date: Tue Jun 6 15:53:59 2017 +0100
Fix double free when running gdb.linespec/ls-errs.exp (PR
breakpoints/21553)
The problem is that b->extra_string is free'ed twice: Once in the
breakpoint's dtor, and another time via make_cleanup (xfree).
This patch gets rid of the cleanups, fixing the problem.
Tested on x86_64 GNU/Linux.
gdb/ChangeLog:
2017-06-06 Pedro Alves <palves@redhat.com>
PR breakpoints/21553
* breakpoint.c (create_breakpoints_sal_default)
(init_breakpoint_sal, create_breakpoint_sal): Use
gdb::unique_xmalloc_ptr for string parameters.
(create_breakpoint): Constify 'extra_string' and 'cond_string'
parameters. Replace cleanups with gdb::unique_xmalloc_ptr.
(base_breakpoint_create_breakpoints_sal)
(bkpt_create_breakpoints_sal, tracepoint_create_breakpoints_sal)
(strace_marker_create_breakpoints_sal)
(create_breakpoints_sal_default): Use gdb::unique_xmalloc_ptr for
string parameters.
* breakpoint.h (breakpoint_ops::create_breakpoints_sal): Use
gdb::unique_xmalloc_ptr for string parameters.
(create_breakpoint): Constify 'extra_string' and 'cond_string'
parameters.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21553] Double free in gdb when running
gdb.linespec/ls-errs.exp
Date: Tue, 06 Jun 2017 15:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21553
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Fix pushed in.
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From: "jepler at dsndata dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21555] New: "error re-setting breakpoint" on PIE
executables
Date: Tue, 06 Jun 2017 15:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21555
Bug ID: 21555
Summary: "error re-setting breakpoint" on PIE executables
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: jepler at dsndata dot com
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When executables are built in PIE mode, all breakpoints are lost and cannot be
reset after gdb decides that the file debugged "has changed". This would occur
in natural use, when the program being debugged is rebuilt within a single gdb
session.
[affected session, Debian Jessie, gcc 4.9, position independent executable]
$ echo 'extern int puts(const char *); int main() { puts("hello world"); }' >
hello.c
$ gcc -g -fPIE -pie -Wl,-z,relro hello.c
$ gdb a.out
GNU gdb (GDB) 8.0.50.20170606-git
[snip]
(gdb) b main
Breakpoint 1 at 0x794: file hello.c, line 1.
(gdb) r
Starting program: /tmp/a.out
Breakpoint 1, main () at hello.c:1
1 extern int puts(const char *); int main() { puts("hello world"); }
(gdb) shell touch a.out
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
`/tmp/a.out' has changed; re-reading symbols.
Error in re-setting breakpoint 1: Cannot access memory at address
0x555555554790
Starting program: /tmp/a.out
hello world
[Inferior 1 (process 12780) exited with code 014]
This has been reported to Debian (see
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863620), but it affects the
master branch of gdb built without any debian-specific patches. Until now, it
wasn't understood that PIE executables were also part of the equation.
This is slightly different than bug #9553, because of the extra steps (touching
the executable) before the problem occurs.
Confirmed affected:
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1 [Debian Jessie]
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git [Debian Stretch]
GNU gdb (GDB) 8.0.50.20170606-git [git 9949827bea]
I haven't been able to confirm that there is any gdb version which was not
affected.
Tested with gcc versions:
gcc version 4.9.2 (Debian 4.9.2-10) [Debian Jessie]
gcc version 6.3.0 20170516 (Debian 6.3.0-18) [Debian Stretch]
Note that in debian Stretch, the default is to use PIE, which makes more Debian
users likely to encounter this problem.
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>From gdb-prs-return-21452-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 07 18:56:32 2017
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Wed, 07 Jun 2017 18:56:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
If you have a reproducer for this, I would really like to see it.
The assertion is coming from cp_type_print_method_args, where we print out any
method qualifiers via inspection of `this':
/* For non-static methods, read qualifiers from the type of
THIS. */
if (!staticp)
{
struct type *domain;
gdb_assert (nargs > 0);
--> gdb_assert (TYPE_CODE (args[0].type) == TYPE_CODE_PTR);
domain = TYPE_TARGET_TYPE (args[0].type);
In this case, the triggering assertion is that the `this' pointer is, in fact,
not a pointer.
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>From gdb-prs-return-21453-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 08 17:54:55 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 08 Jun 2017 17:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21222
--- Comment #10 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
So it's been about 3 months, any luck reproducing this?
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>From gdb-prs-return-21454-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 08 21:38:58 2017
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From: "fredf_oliveira at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21558] New: symtab.fullname() can't handle directories
with Unicode characters
Date: Thu, 08 Jun 2017 21:38:00 -0000
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Bug ID: 21558
Summary: symtab.fullname() can't handle directories with
Unicode characters
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: fredf_oliveira at hotmail dot com
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symtab.fullname() throws UnicodeEncodeError exception when dealing with
directories that contains Unicode characters, making it impossible to access
the absolute file name.
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>From gdb-prs-return-21455-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 08 22:47:10 2017
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From: "andrew at ishiboo dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21559] New: ../../gdb/regcache.c:1087: internal-error: void
regcache_raw_supply(regcache, int, const void): Assertion `regnum >= 0 &&
regnum < regcache->descr->nr_raw_registers' failed.
Date: Thu, 08 Jun 2017 22:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21559
Bug ID: 21559
Summary: ../../gdb/regcache.c:1087: internal-error: void
regcache_raw_supply(regcache, int, const void):
Assertion `regnum >= 0 && regnum <
regcache->descr->nr_raw_registers' failed.
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: andrew at ishiboo dot com
Target Milestone: ---
Running gdb 8.0 on a RHEL6 VM:
$ uname -a
Linux hostname 2.6.32-504.38.1.el6.x86_64 #1 SMP Sun Oct 4 13:43:08 EDT 2015
x86_64 x86_64 x86_64 GNU/Linux
Produced the following output:
../../gdb/regcache.c:1087: internal-error: void regcache_raw_supply(regcache,
int, const void): Assertion `regnum >= 0 && regnum <
regcache->descr->nr_raw_registers' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
Dumping the stack from the core file produces:
(gdb) where
#0 0x0000003fc3e32625 in raise () from /lib64/libc.so.6
#1 0x0000003fc3e33e05 in abort () from /lib64/libc.so.6
#2 0x000000000078267e in dump_core() ()
#3 0x0000000000782af7 in internal_vproblem(internal_problem*, char const*,
int, char const*, __va_list_tag*) ()
#4 0x0000000000782b6f in internal_verror(char const*, int, char const*,
__va_list_tag*) ()
#5 0x0000000000641e26 in internal_error(char const*, int, char const*, ...) ()
#6 0x0000000000712883 in regcache_raw_supply(regcache*, int, void const*) ()
#7 0x000000000046c6f8 in amd64_linux_fetch_inferior_registers(target_ops*,
regcache*, int) ()
#8 0x0000000000754802 in delegate_fetch_registers(target_ops*, regcache*, int)
()
#9 0x0000000000768aa8 in target_fetch_registers(regcache*, int) ()
#10 0x0000000000479622 in ps_lgetregs ()
#11 0x00007f1f6252fb58 in __td_ta_lookup_th_unique () from
/lib64/libthread_db.so.1
#12 0x00007f1f6252fd8a in td_ta_map_lwp2thr () from /lib64/libthread_db.so.1
#13 0x0000000000479c7c in thread_from_lwp(ptid_t) ()
#14 0x000000000047a4b1 in try_thread_db_load_1(thread_db_info*) ()
#15 0x000000000047a7df in try_thread_db_load(char const*, int) ()
#16 0x000000000047aab1 in try_thread_db_load_from_sdir() ()
#17 0x000000000047acbf in thread_db_load_search() ()
#18 0x000000000047ae41 in thread_db_load() ()
#19 0x000000000047af72 in check_for_thread_db() ()
#20 0x000000000047b007 in thread_db_new_objfile(objfile*) ()
#21 0x00000000006e2434 in observer_new_objfile_notification_stub(void const*,
void const*) ()
#22 0x00000000006e1802 in generic_observer_notify(observer_list*, void const*)
()
#23 0x00000000006e24c7 in observer_notify_new_objfile(objfile*) ()
#24 0x000000000073c478 in symbol_file_add_with_addrs(bfd*, char const*,
enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>,
objfile*) ()
#25 0x000000000073c61e in symbol_file_add_from_bfd(bfd*, char const*,
enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>,
objfile*)
()
#26 0x0000000000721c66 in solib_read_symbols(so_list*,
enum_flags<symfile_add_flag>) ()
#27 0x0000000000722490 in solib_add(char const*, int, int) ()
#28 0x0000000000458a77 in enable_break(svr4_info*, int) ()
#29 0x000000000045a655 in svr4_solib_create_inferior_hook(int) ()
#30 0x0000000000722e70 in solib_create_inferior_hook(int) ()
#31 0x000000000068e11e in post_create_inferior(target_ops*, int) ()
#32 0x00000000006920a0 in setup_inferior(int) ()
#33 0x00000000006920e6 in attach_post_wait(char const*, int,
attach_post_wait_mode) ()
#34 0x00000000006922af in attach_command_continuation(void*, int) ()
#35 0x00000000005d4556 in do_my_continuations_1(continuation**, int) ()
#36 0x00000000005d45e1 in do_my_continuations(continuation**, int) ()
#37 0x00000000005d46d9 in do_all_inferior_continuations(int) ()
#38 0x000000000068b4a5 in inferior_event_handler(inferior_event_type, void*) ()
#39 0x000000000069be0e in fetch_inferior_event(void*) ()
#40 0x000000000068b43f in inferior_event_handler(inferior_event_type, void*) ()
#41 0x00000000006a653e in infrun_async_inferior_event_handler(void*) ()
#42 0x000000000064c4e3 in check_async_event_handlers() ()
#43 0x000000000064ae53 in gdb_do_one_event() ()
#44 0x000000000064aefa in start_event_loop() ()
#45 0x00000000006c1cbb in captured_command_loop(void*) ()
#46 0x000000000064e9ef in catch_errors(int (*)(void*), void*, char const*,
return_mask) ()
#47 0x00000000006c30d0 in captured_main(void*) ()
#48 0x00000000006c30f9 in gdb_main(captured_main_args*) ()
#49 0x000000000040a817 in main ()
(gdb) up
#6 0x0000000000712883 in regcache_raw_supply(regcache*, int, void const*) ()
(gdb) info registers
rax 0x0 0
rbx 0x2a648 173640
rcx 0xffffffffffffffff -1
rdx 0x6 6
rsi 0x2a8ed 174317
rdi 0x2a8ed 174317
rbp 0x7ffe49d38630 0x7ffe49d38630
rsp 0x7ffe49d38600 0x7ffe49d38600
r8 0xffffffff 4294967295
r9 0x7f1f63a70700 139772792604416
r10 0x8 8
r11 0x206 518
r12 0x7ffe49d39720 140730137024288
r13 0x7ffe49d39500 140730137023744
r14 0x0 0
r15 0x0 0
rip 0x712883 0x712883 <regcache_raw_supply(regcache*, int, void
const*)+135>
eflags 0x206 [ PF IF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
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>From gdb-prs-return-21456-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 08 22:59:08 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21559] ../../gdb/regcache.c:1087: internal-error: void
regcache_raw_supply(regcache, int, const void): Assertion `regnum >= 0 &&
regnum < regcache->descr->nr_raw_registers' failed.
Date: Thu, 08 Jun 2017 22:59:00 -0000
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--- Comment #1 from Andrew Paprocki <andrew at ishiboo dot com> ---
The bug appears to be here:
#ifndef HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE
{
/* PTRACE_ARCH_PRCTL is obsolete since 2.6.25, where the
fs_base and gs_base fields of user_regs_struct can be
used directly. */
unsigned long base;
if (regnum == -1 || regnum == AMD64_FSBASE_REGNUM)
{
if (ptrace (PTRACE_ARCH_PRCTL, tid, &base, ARCH_GET_FS) < 0)
perror_with_name (_("Couldn't get segment register fs_base"));
regcache_raw_supply (regcache, AMD64_FSBASE_REGNUM, &base);
}
if (regnum == -1 || regnum == AMD64_GSBASE_REGNUM)
{
if (ptrace (PTRACE_ARCH_PRCTL, tid, &base, ARCH_GET_GS) < 0)
perror_with_name (_("Couldn't get segment register gs_base"));
regcache_raw_supply (regcache, AMD64_GSBASE_REGNUM, &base);
}
}
#endif
This code must be getting hit because the binary was built on a RHEL5 system
with 2.6.18 kernel.
The reg cache does not allow the pseudo registers into the cache:
/* Construct a strictly RAW register cache. Don't allow pseudo's
into the register cache. */
descr->nr_raw_registers = gdbarch_num_regs (gdbarch);
descr->sizeof_raw_register_status = gdbarch_num_regs (gdbarch);
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>From gdb-prs-return-21457-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 08 23:05:49 2017
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Subject: [Bug gdb/21559] ../../gdb/regcache.c:1087: internal-error: void
regcache_raw_supply(regcache, int, const void): Assertion `regnum >= 0 &&
regnum < regcache->descr->nr_raw_registers' failed.
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--- Comment #2 from Andrew Paprocki <andrew at ishiboo dot com> ---
This appears to be the commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commitdiff;h=2735833d5fb220983d09770087b573fed5bf93cd
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>From gdb-prs-return-21458-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 09 01:49:00 2017
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Subject: [Bug gdb/21559] ../../gdb/regcache.c:1087: internal-error: void
regcache_raw_supply(regcache, int, const void): Assertion `regnum >= 0 &&
regnum < regcache->descr->nr_raw_registers' failed.
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--- Comment #3 from Andrew Paprocki <andrew at ishiboo dot com> ---
It should be noted that modifying `configure` to force on
`HAVE_STRUCT_USER_REGS_STRUCT_FS_BASE` and
`HAVE_STRUCT_USER_REGS_STRUCT_GS_BASE` fixes this issue. For some reason the
`configure` tests for `fs_base` and `gs_base` fail even though `sys/user.h` on
RHEL5 has the fields defined in `user_regs_struct`.
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>From gdb-prs-return-21459-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 09 12:29:20 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/16242] print format for hex float
Date: Fri, 09 Jun 2017 12:29:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I think it would make sense to repurpose /x, because I don't see much
value in how that currently handling floating point.
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>From gdb-prs-return-21460-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 09 13:16:51 2017
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From: "linuxer at quantentunnel dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Fri, 09 Jun 2017 13:16:00 -0000
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--- Comment #3 from Johannes <linuxer at quantentunnel dot de> ---
Hi Keith, (In reply to Keith Seitz from comment #2)
> If you have a reproducer for this, I would really like to see it.
> What do you need to reproduce the bug? Remote access to the debug
session? The target is a Cortex-M3 microcontroller board
(STM32F103C8), the binary is an .elf file. Where shall I put it to for
your access? As an attechment to this bug? The sources can be made
available too. Fortunately the sources belong to a small demo project
for testing SW frameworks on different target boards, so I have no
issues with making the sources open to you. But this is a bigger piece
of download (several 100M bytes, when not stripped down to the single
error situation). Same question for the sources, do you want and how
do you want to access the sources? Attachments, cloud download, shared
Github access or the like? Regards,Johannes Lode
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>From gdb-prs-return-21461-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 09 15:21:41 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Fri, 09 Jun 2017 15:21:00 -0000
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--- Comment #4 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Johannes from comment #3)
> > What do you need to reproduce the bug? Remote access to the debug
> session?
The binary is probably more than enough. You can attach it to this bug if it
isn't too large, or email it to me directly.
I will probably need to see sources later when (if?) I figure out what's
triggering the assert. Also, if you could copy/paste a session demonstrating
the assert, that would be helpful for me to reproduce.
Was this binary built with any optimization or stripped?
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>From gdb-prs-return-21462-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 09 22:55:00 2017
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From: "mr.nuke.me at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21563] New: gdb segfaults when trying to read DWARF symbols
created by TI compiler
Date: Fri, 09 Jun 2017 22:55:00 -0000
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Bug ID: 21563
Summary: gdb segfaults when trying to read DWARF symbols
created by TI compiler
Product: gdb
Version: 7.6
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: mr.nuke.me at gmail dot com
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Created attachment 10086
--> https://sourceware.org/bugzilla/attachment.cgi?id=10086&action=edit
ELF file that causes GDB to go tits up
arm-none-eabi-gdb will segfault when trying to read or demangle a symbol from a
DWARF section created with TI code composer studio.
There are several ways to produce the crash, either by typing break, then
hitting <Tab> to autocomplete, or trying to break on a function name. The
segfault happens in 'd_demangle_callback()' every time.
$ arm-none-eabi-gdb ~/ti_ccs_gdb_crash.elf
GNU gdb (GDB) 7.6.2
[snip]
Reading symbols from /home/mrnuke/ti_ccs_gdb_crash.elf...done.
(gdb) break main
Segmentation fault (core dumped)
I expect that gdb either sets the correct breakpoint, or says that symbol
cannot be found (if it cannot demangle the names).
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Subject: [Bug gdb/21563] gdb segfaults when trying to read DWARF symbols
created by TI compiler
Date: Fri, 09 Jun 2017 22:55:00 -0000
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--- Comment #1 from mrnuke <mr.nuke.me at gmail dot com> ---
Created attachment 10087
--> https://sourceware.org/bugzilla/attachment.cgi?id=10087&action=edit
GDB Backtrace of GDB crashing
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Sat, 10 Jun 2017 15:09:00 -0000
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--- Comment #5 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10089
--> https://sourceware.org/bugzilla/attachment.cgi?id=10089&action=edit
ELF binary file, that triggers the assert, when loaded to the target and run by
the gdb to main().
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Sat, 10 Jun 2017 15:10:00 -0000
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--- Comment #6 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10090
--> https://sourceware.org/bugzilla/attachment.cgi?id=10090&action=edit
The linker output map for the ELF file.
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Sat, 10 Jun 2017 15:14:00 -0000
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--- Comment #7 from Johannes <linuxer at quantentunnel dot de> ---
(In reply to Keith Seitz from comment #4)
> The binary is probably more than enough. You can attach it to this bug if it
> isn't too large, or email it to me directly.
Is attached, as well as the linker map file. This unstripped binary was given
to the gdb and this way loaded into the target board.
> I will probably need to see sources later when (if?) I figure out what's
> triggering the assert. Also, if you could copy/paste a session demonstrating
> the assert, that would be helpful for me to reproduce.
Session trace (copied from the Eclipse gdb console window) is put as an
attachment.
> Was this binary built with any optimization or stripped?
The ELF file was built with "g++ -std=c++11 -O2 -lto ..." in the compiling and
the linking stage.
Regards,
Johannes
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Sat, 10 Jun 2017 15:16:00 -0000
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--- Comment #8 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10091
--> https://sourceware.org/bugzilla/attachment.cgi?id=10091&action=edit
Session trace from gdb start to the assert, copied from Eclipse gdb console
window.
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Subject: [Bug gdb/21100] clang follow-fork-mode child internal-error
Date: Sat, 10 Jun 2017 17:24:00 -0000
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mjashdev at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mjashdev at gmail dot com
--- Comment #1 from mjashdev at gmail dot com ---
I can confirm this bug when debugging a forked LLVM process on arch linux with
gdb 8.0 compiled from the arch build system.
If anyone could provide a workaround I would be very appreciative.
The following is a backtrace before the error occurs:
#0 free_objfile_data (objfile=0x3945b60, data=0x31efe10) at jit.c:1491
#1 0x00000000006f24c9 in objfileregistry_callback_adaptor (func=0x6c20a4
<free_objfile_data(objfile*, void*)>, container=0x3945b60, data=0x31efe10) at
objfiles.c:61
#2 0x00000000007274b3 in registry_clear_data (data_registry=0xe3a390
<objfile_data_registry>,
adaptor=0x6f2483 <objfileregistry_callback_adaptor(registry_data_callback,
registry_container*, void*)>, container=0x3945b60, fields=0x3945c58) at
registry.c:79
#3 0x0000000000727555 in registry_container_free_data (data_registry=0xe3a390
<objfile_data_registry>,
adaptor=0x6f2483 <objfileregistry_callback_adaptor(registry_data_callback,
registry_container*, void*)>, container=0x3945b60, fields=0x3945c58) at
registry.c:92
#4 0x00000000006f253d in objfile_free_data (container=0x3945b60) at
objfiles.c:61
#5 0x00000000006f3bfe in free_objfile (objfile=0x3945b60) at objfiles.c:689
#6 0x00000000006f4b6f in objfile_purge_solibs () at objfiles.c:1099
#7 0x0000000000735995 in no_shared_libraries (ignored=0x0, from_tty=0) at
solib.c:1271
#8 0x00000000006aef6e in follow_exec (ptid=..., exec_file_target=0x16a4df0
"/home/mason/Development/opencut/opencut_qt/build/opencut_core") at
infrun.c:1188
#9 0x00000000006b5cf4 in handle_inferior_event_1 (ecs=0x7fffffffde10) at
infrun.c:5336
(More stack frames follow...)
#0 0x00007ffff613b670 in raise () from /usr/lib/libc.so.6
#1 0x00007ffff613cd00 in abort () from /usr/lib/libc.so.6
#2 0x00000000007929a9 in dump_core () at utils.c:465
#3 0x0000000000792ddb in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *) (
problem=0xe15040 <internal_error_problem>, file=0x969d57 "breakpoint.c",
line=13757, fmt=0x969a50 "%s: Assertion `%s' failed.", ap=0x7fffffffd898) at
utils.c:676
#4 0x0000000000792e4f in internal_verror (file=0x969d57 "breakpoint.c",
line=13757, fmt=0x969a50 "%s: Assertion `%s' failed.", ap=0x7fffffffd898) at
utils.c:702
#5 0x000000000065c7d1 in internal_error (file=0x969d57 "breakpoint.c",
line=13757, fmt=0x969a50 "%s: Assertion `%s' failed.") at common/errors.c:55
#6 0x00000000005c834c in delete_breakpoint (bpt=0x0) at breakpoint.c:13757
#7 0x00000000006c2115 in free_objfile_data (objfile=0x39895b0, data=0x324b340)
at jit.c:1491
#8 0x00000000006f24c9 in objfileregistry_callback_adaptor (func=0x6c20a4
<free_objfile_data(objfile*, void*)>, container=0x39895b0, data=0x324b340) at
objfiles.c:61
#9 0x00000000007274b3 in registry_clear_data (data_registry=0xe3a390
<objfile_data_registry>,
adaptor=0x6f2483 <objfileregistry_callback_adaptor(registry_data_callback,
registry_container*, void*)>, container=0x39895b0, fields=0x39896a8) at
registry.c:79
#10 0x0000000000727555 in registry_container_free_data (data_registry=0xe3a390
<objfile_data_registry>,
adaptor=0x6f2483 <objfileregistry_callback_adaptor(registry_data_callback,
registry_container*, void*)>, container=0x39895b0, fields=0x39896a8) at
registry.c:92
#11 0x00000000006f253d in objfile_free_data (container=0x39895b0) at
objfiles.c:61
#12 0x00000000006f3bfe in free_objfile (objfile=0x39895b0) at objfiles.c:689
#13 0x00000000006f4b6f in objfile_purge_solibs () at objfiles.c:1099
#14 0x0000000000735995 in no_shared_libraries (ignored=0x0, from_tty=0) at
solib.c:1271
#15 0x00000000006aef6e in follow_exec (ptid=..., exec_file_target=0x15f5790
"/home/mason/Development/opencut/opencut_qt/build/opencut_core") at
infrun.c:1188
#16 0x00000000006b5cf4 in handle_inferior_event_1 (ecs=0x7fffffffde10) at
infrun.c:5336
#17 0x00000000006b6006 in handle_inferior_event (ecs=0x7fffffffde10) at
infrun.c:5427
#18 0x00000000006b33c4 in fetch_inferior_event (client_data=0x0) at
infrun.c:3932
#19 0x00000000006a3e20 in inferior_event_handler (event_type=INF_REG_EVENT,
client_data=0x0) at inf-loop.c:43
#20 0x000000000047a6c5 in handle_target_event (error=0, client_data=0x0) at
linux-nat.c:4522
#21 0x00000000006663cc in handle_file_event (file_ptr=0x16cced0, ready_mask=1)
at event-loop.c:733
#22 0x0000000000666957 in gdb_wait_for_event (block=0) at event-loop.c:859
#23 0x00000000006657f8 in gdb_do_one_event () at event-loop.c:322
#24 0x00000000006658a4 in start_event_loop () at event-loop.c:371
#25 0x00000000006d7807 in captured_command_loop (data=0x0) at main.c:325
#26 0x000000000066928a in catch_errors (func=0x6d77c5
<captured_command_loop(void*)>, func_args=0x0, errstring=0x9c05dc "",
mask=RETURN_MASK_ALL) at exceptions.c:236
#27 0x00000000006d8b4a in captured_main (data=0x7fffffffe190) at main.c:1150
#28 0x00000000006d8b73 in gdb_main (args=0x7fffffffe190) at main.c:1160
#29 0x000000000040e0de in main (argc=2, argv=0x7fffffffe298) at gdb.c:32
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Sat, 10 Jun 2017 17:43:00 -0000
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--- Comment #9 from Johannes <linuxer at quantentunnel dot de> ---
(In reply to Johannes from comment #7)
> The ELF file was built with "g++ -std=c++11 -O2 -lto ..." in the compiling
> and the linking stage.
There is a typo in the compiler flags, it should read:
g++ -std=c++11 -O2 -flto ...
:-)
Johannes
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Subject: [Bug gdb/21051] nat/x86-linux-dregs.c:146: internal-error: void
x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped (lwp)'
failed.
Date: Mon, 12 Jun 2017 13:48:00 -0000
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--- Comment #2 from Mateusz Lenik <mlen at mlen dot pl> ---
Sadly, this issue is still present in gdb 8.0.
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Subject: [Bug exp/16225] __int128_t types print strangely
Date: Mon, 12 Jun 2017 21:44:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4ac0cb1cf04f105586746a6cce5b0f93d76f2b33
commit 4ac0cb1cf04f105586746a6cce5b0f93d76f2b33
Author: Tom Tromey <tom@tromey.com>
Date: Mon May 22 16:32:25 2017 -0600
Let print_decimal_chars handle signed values
This changes print_decimal_chars to handle signed values.
gdb/ChangeLog
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* valprint.h (print_decimal_chars): Update.
* valprint.c (maybe_negate_by_bytes): New function.
(print_decimal_chars): Add "is_signed" argument.
* printcmd.c (print_scalar_formatted): Update.
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Subject: [Bug exp/16225] __int128_t types print strangely
Date: Mon, 12 Jun 2017 21:44:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=30a254669b16b86166fed1f9a4c4f9cc55a07fdc
commit 30a254669b16b86166fed1f9a4c4f9cc55a07fdc
Author: Tom Tromey <tom@tromey.com>
Date: Mon May 22 03:55:58 2017 -0600
Don't always zero pad in print_*_chars
This changes print_octal_chars and print_decimal_chars to never zero
pad, and changes print_binary_chars and print_hex_chars to only
optionally zero-pad, based on a flag.
ChangeLog
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* valprint.h (print_binary_chars, print_hex_chars): Update.
* valprint.c (val_print_type_code_int): Update.
(print_binary_chars): Add "zero_pad" argument.
(emit_octal_digit): New function.
(print_octal_chars): Don't zero-pad.
(print_decimal_chars): Likewise.
(print_hex_chars): Add "zero_pad" argument.
* sh64-tdep.c (sh64_do_fp_register): Update.
* regcache.c (regcache::dump): Update.
* printcmd.c (print_scalar_formatted): Update.
* infcmd.c (default_print_one_register_info): Update.
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* gdb.reverse/i386-sse-reverse.exp: Update tests.
* gdb.arch/vsx-regs.exp: Update tests.
* gdb.arch/s390-vregs.exp (hex128): New proc.
Update test.
* gdb.arch/altivec-regs.exp: Update tests.
--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=4ac0cb1cf04f105586746a6cce5b0f93d76f2b33
commit 4ac0cb1cf04f105586746a6cce5b0f93d76f2b33
Author: Tom Tromey <tom@tromey.com>
Date: Mon May 22 16:32:25 2017 -0600
Let print_decimal_chars handle signed values
This changes print_decimal_chars to handle signed values.
gdb/ChangeLog
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* valprint.h (print_decimal_chars): Update.
* valprint.c (maybe_negate_by_bytes): New function.
(print_decimal_chars): Add "is_signed" argument.
* printcmd.c (print_scalar_formatted): Update.
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Subject: [Bug exp/16225] __int128_t types print strangely
Date: Mon, 12 Jun 2017 21:44:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=30a254669b16b86166fed1f9a4c4f9cc55a07fdc
commit 30a254669b16b86166fed1f9a4c4f9cc55a07fdc
Author: Tom Tromey <tom@tromey.com>
Date: Mon May 22 03:55:58 2017 -0600
Don't always zero pad in print_*_chars
This changes print_octal_chars and print_decimal_chars to never zero
pad, and changes print_binary_chars and print_hex_chars to only
optionally zero-pad, based on a flag.
ChangeLog
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* valprint.h (print_binary_chars, print_hex_chars): Update.
* valprint.c (val_print_type_code_int): Update.
(print_binary_chars): Add "zero_pad" argument.
(emit_octal_digit): New function.
(print_octal_chars): Don't zero-pad.
(print_decimal_chars): Likewise.
(print_hex_chars): Add "zero_pad" argument.
* sh64-tdep.c (sh64_do_fp_register): Update.
* regcache.c (regcache::dump): Update.
* printcmd.c (print_scalar_formatted): Update.
* infcmd.c (default_print_one_register_info): Update.
2017-06-12 Tom Tromey <tom@tromey.com>
PR exp/16225:
* gdb.reverse/i386-sse-reverse.exp: Update tests.
* gdb.arch/vsx-regs.exp: Update tests.
* gdb.arch/s390-vregs.exp (hex128): New proc.
Update test.
* gdb.arch/altivec-regs.exp: Update tests.
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Subject: [Bug exp/16225] __int128_t types print strangely
Date: Mon, 12 Jun 2017 21:45:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/20991] __int128 type support
Date: Mon, 12 Jun 2017 21:45:00 -0000
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Bug 20991 depends on bug 16225, which changed state.
Bug 16225 Summary: __int128_t types print strangely
https://sourceware.org/bugzilla/show_bug.cgi?id=16225
What |Removed |Added
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Resolution|--- |FIXED
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #10 from Keith Seitz <keiths at redhat dot com> ---
Looking at the DWARF and session information you've provided, I *think* GDB is
asserting on the following symbol:
_ZN5Shell6TinySh8cmd_helpERS0_iPPKc
That is: Shell::TinySh::cmd_help(Shell::TinySh&, int, char const**).
According to the debug info, "Shell" is a namespace. "TinySh" is a structure,
and cmd_help is a *method* of that structure:
<3><15dc>: Abbrev Number: 68 (DW_TAG_subprogram)
<15dd> DW_AT_external : 1
<15dd> DW_AT_name : (indirect string, offset: 0x1621): cmd_help
<15e1> DW_AT_decl_file : 20
<15e2> DW_AT_decl_line : 49
<15e3> DW_AT_linkage_name: (indirect string, offset: 0xa7b):
_ZN5Shell6Tin
ySh8cmd_helpERS0_iPPKc
<15e7> DW_AT_prototyped : 1
<15e7> DW_AT_accessibility: 3 (private)
<15e8> DW_AT_declaration : 1
<4><15e8>: Abbrev Number: 13 (DW_TAG_formal_parameter)
<15e9> DW_AT_type : <0x1691>
<4><15ed>: Abbrev Number: 13 (DW_TAG_formal_parameter)
<15ee> DW_AT_type : <0x4f>
<4><15f2>: Abbrev Number: 13 (DW_TAG_formal_parameter)
<15f3> DW_AT_type : <0x1697>
<4><15f7>: Abbrev Number: 0
The first parameter of this (private) method has type given by 0x1691, which is
a *reference* to TinySh, not a pointer. Not only that, but this first parameter
is also not marked artificial.
Can you provide the source declaration for Shell::TinySh::cmd_help?
>From what I can infer from this, GDB (erroneously) marks cmd_help as a
non-static member function, but it's really just a guess.
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
Date: Tue, 13 Jun 2017 00:01:00 -0000
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--- Comment #11 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Keith Seitz from comment #10)
> From what I can infer from this, GDB (erroneously) marks cmd_help as a
> non-static member function, but it's really just a guess.
Red herring. Ignore my previous comment.
I built up an arm-none-eabi-gdb and was able to easily step through the code. A
simple "ptype Shell::TinySh" triggers the assertion.
The symbol we actually falter on is the one in DIE 0xa013:
<3><a013>: Abbrev Number: 53 (DW_TAG_subprogram)
<a014> DW_AT_external : 1
<a014> DW_AT_name : (indirect string, offset: 0x2806):
_ZN5Shell6TinySh7char_inEc.constprop.67
<a018> DW_AT_decl_file : 9
<a019> DW_AT_decl_line : 487
<a01b> DW_AT_accessibility: 3 (private)
<a01c> DW_AT_declaration : 1
<a01c> DW_AT_sibling : <0xa026>
<4><a020>: Abbrev Number: 11 (DW_TAG_formal_parameter)
<a021> DW_AT_type : <0x9630>
<a025> DW_AT_artificial : 1
<4><a025>: Abbrev Number: 0
>From this, we see the `this' pointer (properly marked artificial) has type
given by 0x9630:
<1><9630>: Abbrev Number: 2 (DW_TAG_base_type)
<9631> DW_AT_byte_size : 1
<9632> DW_AT_encoding : 8 (unsigned char)
<9633> DW_AT_name : (indirect string, offset: 0x30fd): char
Yup. The `this' pointer is of type `char'. That is clearly really bad. [I don't
know if this is a linking problem or a compiler problem -- I've never seen
DW_AT_name like the one listed above).
I don't know if we really want to "fix" this, it is showing a pretty serious
error somewhere. However, if you wanted to workaround this, I would modify
cp_type_print_method_args:
diff --git a/gdb/c-typeprint.c b/gdb/c-typeprint.c
index 5a23e92..dafc080 100644
--- a/gdb/c-typeprint.c
+++ b/gdb/c-typeprint.c
@@ -641,27 +641,27 @@ cp_type_print_method_args (struct type *mtype, const char
*prefix,
THIS. */
if (!staticp)
{
- struct type *domain;
-
gdb_assert (nargs > 0);
- gdb_assert (TYPE_CODE (args[0].type) == TYPE_CODE_PTR);
- domain = TYPE_TARGET_TYPE (args[0].type);
- if (TYPE_CONST (domain))
- fprintf_filtered (stream, " const");
+ if (TYPE_CODE (args[0].type) == TYPE_CODE_PTR)
+ {
+ struct type *domain = TYPE_TARGET_TYPE (args[0].type);
+
+ if (TYPE_CONST (domain))
+ fprintf_filtered (stream, " const");
- if (TYPE_VOLATILE (domain))
- fprintf_filtered (stream, " volatile");
+ if (TYPE_VOLATILE (domain))
+ fprintf_filtered (stream, " volatile");
- if (TYPE_RESTRICT (domain))
- fprintf_filtered (stream, " restrict");
+ if (TYPE_RESTRICT (domain))
+ fprintf_filtered (stream, " restrict");
- if (TYPE_ATOMIC (domain))
- fprintf_filtered (stream, " _Atomic");
+ if (TYPE_ATOMIC (domain))
+ fprintf_filtered (stream, " _Atomic");
+ }
}
}
-
/* Print any asterisks or open-parentheses needed before the
variable name (to describe its type).
[That's mostly whitespace change.]
That will get you going again while I discuss with maintainers what we should
do.
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Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
entering any invalid command
Date: Tue, 13 Jun 2017 08:18:00 -0000
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--- Comment #5 from David Engster <david at engster dot org> ---
I just tested again with gdb 8.0 and gcc 6.3.0 from MSYS2 32bit
(i686-w64-mingw32-gcc), and I still see the same problem. I have no idea why it
works for you.
I can however also confirm that the patch from Orgad in bug 21187 and using
"--disable-staticlib" fixes this issue, so it is definitely an issue with
static linking.
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
leads to broken exception handling on AIX platform
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David Engster <david at engster dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |david at engster dot org
--- Comment #14 from David Engster <david at engster dot org> ---
This issue is also present when compiling for w32 (see bug 21087). I can
confirm that applying this patch and using '--disable-staticlib' for
'configure' fixes this issue when compiling gdb on Windows using MSYS2, hence
I'd much appreciate if this patch could be applied.
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Subject: [Bug build/21187] Static linking of libstdc++ and libgcc with GDB
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--- Comment #15 from David Engster <david at engster dot org> ---
Sorry, the above refers to bug 21078.
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #12 from Pedro Alves <palves at redhat dot com> ---
On 06/13/2017 01:01 AM, keiths at redhat dot com wrote:
>
> <3><a013>: Abbrev Number: 53 (DW_TAG_subprogram)
> <a014> DW_AT_external : 1
> <a014> DW_AT_name : (indirect string, offset: 0x2806):
> _ZN5Shell6TinySh7char_inEc.constprop.67
Hmm, constprop here might well be related. This is:
$ echo _ZN5Shell6TinySh7char_inEc.constprop.67 | c++filt
Shell::TinySh::char_in(char) [clone .constprop.67]
I think that means that the compiler cloned the "char_in(char)"
function, constant-propagated some argument in that clone.
I'd guess it decided the char_in function does not use the "this" pointer
for anything, and got rid of it in the clone? And then the compiler's
debug info emission code gets confused and always emits the first
parameter as artificial, even though it's no longer the "this"
hidden arg? Just guessing.
Or could maybe "Shell::TinySh::char_in(char)" be really
a static method, and the "char" parameter ends up marked
artificial because that's what the compiler "const propagated"?
I.e., that parameter doesn't really exist in the generated code?
It'd be good to know what exactly was "Shell::TinySh::char_in(char)"
compiled from -- free function, method, static method? Etc.
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Subject: [Bug symtab/15391] DW_OP_GNU_implicit_pointer bug
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Arnez <arnez@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d5d1163eff2415a01895f1cff8bbee32b3f0ab66
commit d5d1163eff2415a01895f1cff8bbee32b3f0ab66
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date: Tue Jun 13 15:20:26 2017 +0200
write_pieced_value: Fix size capping logic
A field f in a structure composed of DWARF pieces may be located in
multiple pieces, where the first and last of those may contain bits from
other fields as well. So when writing to f, the beginning of the first
and the end of the last of those pieces may have to be skipped. But the
logic in write_pieced_value for handling one of those pieces is flawed
when the first and last piece are the same, i.e., f is contained in a
single piece:
< - - - - - - - - - piece_size - - - - - - - - - ->
+-------------------------------------------------+
| skipped_bits | f_bits | / / / / / / / / / / |
+-------------------------------------------------+
The current logic determines the size of the sub-piece to operate on by
limiting the piece size to the bit size of f and then subtracting the
skipped bits:
min (piece_size, f_bits) - skipped_bits
Instead of:
min (piece_size - skipped_bits, f_bits)
So the resulting sub-piece size is corrupted, leading to wrong handling of
this piece in write_pieced_value.
Note that the same bug was already found in read_pieced_value and fixed
there (but not in write_pieced_value), see PR 15391.
This patch swaps the calculations, bringing them into the same (correct)
order as in read_pieced_value.
gdb/ChangeLog:
* dwarf2loc.c (write_pieced_value): Fix order of calculations for
size capping.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/var-pieces.exp: Add test case for modifying a
variable at nonzero offset.
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Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
big-endian targets
Date: Tue, 13 Jun 2017 13:22:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andreas Arnez <arnez@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e93523245b704bc126705620969b4736b00350c5
commit e93523245b704bc126705620969b4736b00350c5
Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
Date: Tue Jun 13 15:20:26 2017 +0200
PR gdb/21226: Take DWARF stack value pieces from LSB end
When taking a DW_OP_piece or DW_OP_bit_piece from a DW_OP_stack_value, the
existing logic always takes the piece from the lowest-addressed end, which
is wrong on big-endian targets. The DWARF standard states that the
"DW_OP_bit_piece operation describes a sequence of bits using the least
significant bits of that value", and this also matches the current logic
in GCC. For instance, the GCC guality test case pr54970.c fails on s390x
because of this.
This fix adjusts the piece accordingly on big-endian targets. It is
assumed that:
* DW_OP_piece shall take the piece from the LSB end as well;
* pieces reaching outside the stack value bits are considered undefined,
and a zero value can be used instead.
gdb/ChangeLog:
PR gdb/21226
* dwarf2loc.c (read_pieced_value): Anchor stack value pieces at
the LSB end, independent of endianness.
gdb/testsuite/ChangeLog:
PR gdb/21226
* gdb.dwarf2/nonvar-access.exp: Add checks for verifying that
stack value pieces are taken from the LSB end.
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>From gdb-prs-return-21484-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 13 15:32:47 2017
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From: "fhomborg at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tui/21574] New: `help run` message says arguments are expanded
via "sh"
Date: Tue, 13 Jun 2017 15:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21574
Bug ID: 21574
Summary: `help run` message says arguments are expanded via
"sh"
Product: gdb
Version: 8.0
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In response to `help run`, gdb says "Args may include "*", or "[...]"; they are
expanded using "sh".". That's incorrect - they are expanded using $SHELL,
whatever that may be (unless it is undefined, which it usually isn't at least
on UNIX-like systems).
The info documentation seems correct.
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #13 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10095
--> https://sourceware.org/bugzilla/attachment.cgi?id=10095&action=edit
Header file for the Shell::TinySh class, implementation follows.
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #14 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10096
--> https://sourceware.org/bugzilla/attachment.cgi?id=10096&action=edit
Implementation for the Shell::TinySh class.
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>From gdb-prs-return-21487-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 13 17:03:28 2017
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Subject: [Bug gdb/21549] c-typeprint.c:262: internal-error: void
cp_type_print_method_args(type*, const char*, const char*, int, ui_file*,
const type_print_options*): Assertion `TYPE_CODE (args[0].type) = TYPE_CODE_PTR' failed.
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--- Comment #15 from Johannes <linuxer at quantentunnel dot de> ---
Created attachment 10097
--> https://sourceware.org/bugzilla/attachment.cgi?id=10097&action=edit
The linker input for the Shell::TinySh class.
(in reply to comment #10, #11. #12)
I attached the mentioned Shell::TinySh class in source and the linker input for
that. I hope that helps for your investigation.
Best regards and many thanks for your efforts,
Johannes
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Subject: [Bug gdb/21226] DW_OP_stack_value pieces yield wrong data on
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Andreas Arnez <arnez at linux dot vnet.ibm.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |krebbel at linux dot vnet.ibm.com
Resolution|--- |FIXED
--- Comment #5 from Andreas Arnez <arnez at linux dot vnet.ibm.com> ---
(In reply to cvs-commit@gcc.gnu.org from comment #4)
> commit e93523245b704bc126705620969b4736b00350c5
> Author: Andreas Arnez <arnez@linux.vnet.ibm.com>
> Date: Tue Jun 13 15:20:26 2017 +0200
>
> PR gdb/21226: Take DWARF stack value pieces from LSB end
This commit fixes the problem. In particular all FAILs from pr54970.c in GCC's
guality test suite go away.
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Subject: [Bug gdb/21574] `help run` message says arguments are expanded via
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CC| |sergiodj at redhat dot com
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Ever confirmed|0 |1
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Subject: [Bug tui/21599] New: gdb crashes when in TUI mode and terminal
window is made small
Date: Wed, 14 Jun 2017 21:01:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21599
Bug ID: 21599
Summary: gdb crashes when in TUI mode and terminal window is
made small
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: tui
Assignee: sergiodj at redhat dot com
Reporter: sergiodj at redhat dot com
CC: jlebon at redhat dot com
Target Milestone: ---
[ Clone of https://bugzilla.redhat.com/show_bug.cgi?id=1459334 ]
Description of problem:
gdb will crash in TUI mode if the terminal window gets too small.
Version-Release number of selected component (if applicable):
$ rpm -q gdb
gdb-7.12.1-48.fc25.x86_64
How reproducible:
Always
Steps to Reproduce:
1. Start gdb
2. Enter TUI mode
3. Make the terminal window (or tmux pane) very small
Actual results:
gdb crashes
Expected results:
gdb doesn't crash
Additional info:
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Subject: [Bug tui/21599] gdb crashes when in TUI mode and terminal window is
made small
Date: Wed, 14 Jun 2017 21:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21599
Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
More instructions on how to reproduce.
1) Enter tmux. I am assuming that the modifier sequence for your tmux is C-b
(the default).
2) Split the pane horizontally (C-b ").
3) Start GDB in TUI mode (gdb -tui) on the upper pane.
4) Resize the upper pane, making it as small as possible (C-b <upper-arrow>,
repeatedly).
You should see a segmentation fault.
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To: gdb-prs@sourceware.org
Subject: [Bug backtrace/21600] New: Fail to detect invalid FDE header, can
exhaust gdb process's virtual memory and terminate debug session
Date: Thu, 15 Jun 2017 02:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21600
Bug ID: 21600
Summary: Fail to detect invalid FDE header, can exhaust gdb
process's virtual memory and terminate debug session
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: backtrace
Assignee: unassigned at sourceware dot org
Reporter: kanglictf at gmail dot com
Target Milestone: ---
GDB fails to catch an invalid length informaiton in dwarf debug frame FDE
headers. A carefully created ELF file or core file can cause gdb to terminate
the debug session due to memory exhausted error.
This bug was found by Kang Li <kanglictf@gmail.com> and Yue Yin
<yinyueacm@gmail.com>. We also thank Guodong Zhu for help troubleshooting.
This bug was found and verified on 32-bit Ubuntu 14.04 LTS (and tested on
Ubuntu 12.04.5 as well)
The software was checkout from git://sourceware.org/git/binutils-gdb.git on
2017/06/14
and the latest commit f7e16c2a9cc405707e646e951397938d2b4eea48
The package was built with gcc 4.8.3 .
* Two ways to reproduce the error
Method A:
1. Use gdb to open a malformed core file (file cb and core are in attachment)
$ gdb cb core
2. after sometime, gdb will show virtual memory exhausted error.
Method B:
1. Use gdb to load a malformed ELF binary (file trouble_bin is in attachment)
$ gdb trouble_bin
2. Set a breakpoint. It does not matter where as long as it will be hit at
run time.
In this example, we put a breakpoint at the start of .init section.
(gdb) br *0x80482b0
3. run and gdb will show virtual memory exhausted error after it hit a
breakpoint.
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
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--- Comment #1 from Kang <kanglictf at gmail dot com> ---
Created attachment 10141
--> https://sourceware.org/bugzilla/attachment.cgi?id=10141&action=edit
malformed core file
gdb runs into error when open this file along with the normal binary (the
attachment called cb)
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
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--- Comment #2 from Kang <kanglictf at gmail dot com> ---
Created attachment 10142
--> https://sourceware.org/bugzilla/attachment.cgi?id=10142&action=edit
a regular ELF file (cb), used to load with the core file
use gdb to load this ELF and the core file together.
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--- Comment #3 from Kang <kanglictf at gmail dot com> ---
Created attachment 10143
--> https://sourceware.org/bugzilla/attachment.cgi?id=10143&action=edit
a malformed ELF file
gdb shows error message after run this with a breakpoint.
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
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--- Comment #4 from Kang <kanglictf at gmail dot com> ---
Created attachment 10144
--> https://sourceware.org/bugzilla/attachment.cgi?id=10144&action=edit
sample patch file
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--- Comment #5 from Kang <kanglictf at gmail dot com> ---
Created attachment 10145
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screenshot or gdb failure when open core file
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
gdb process's virtual memory and terminate debug session
Date: Thu, 15 Jun 2017 02:31:00 -0000
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--- Comment #6 from Kang <kanglictf at gmail dot com> ---
Created attachment 10146
--> https://sourceware.org/bugzilla/attachment.cgi?id=10146&action=edit
screenshot when gdb fails during debugging
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>From gdb-prs-return-21499-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 02:36:37 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
Date: Thu, 15 Jun 2017 02:36:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |WAITING
Last reconfirmed| |2017-06-15
CC| |sergiodj at redhat dot com
Ever confirmed|0 |1
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I am not sure if I understand this bug. Do you have the source file on the
same directory as your binary? If there is a binary but you don't have the
corresponding source file, GDB won't be able to list anything. Can you provide
more information, please?
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>From gdb-prs-return-21500-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 02:46:45 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21574] `help run` message says arguments are expanded via
"sh"
Date: Thu, 15 Jun 2017 02:46:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=45159d6ad394fe7db840b2b92eaa69508b8a8fe7
commit 45159d6ad394fe7db840b2b92eaa69508b8a8fe7
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Wed Jun 14 16:45:20 2017 -0400
PR gdb/21574: Mention $SHELL and startup-with-shell on "help run"
This simple patch updates the documentation of "help run" in order to
mention that the shell used to start the inferior comes from the
$SHELL environment variable. It also mentions that this behaviour can
be disabled by using the "set startup-with-shell off" command.
gdb/ChangeLog:
2017-06-14 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21574
* infcmd.c (_initialize_infcmd): Expand "help run" documentation
to mention $SHELL and startup-with-shell.
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>From gdb-prs-return-21501-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 02:46:52 2017
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Subject: [Bug gdb/21574] `help run` message says arguments are expanded via
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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>From gdb-prs-return-21502-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 09:05:45 2017
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From: "vishwanath.patil at pathpartnertech dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
Date: Thu, 15 Jun 2017 09:05:00 -0000
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--- Comment #3 from vishwanath <vishwanath.patil at pathpartnertech dot com> ---
It is cross compiling , only building with -g (with symbols) can't it list the
program ?
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--- Comment #4 from vishwanath <vishwanath.patil at pathpartnertech dot com> ---
It is cross compiling , only building with -g (with symbols) can't it list the
program ?
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>From gdb-prs-return-21504-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 16:46:15 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
Date: Thu, 15 Jun 2017 16:46:00 -0000
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--- Comment #5 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
(In reply to vishwanath from comment #4)
> It is cross compiling , only building with -g (with symbols) can't it list
> the program ?
But do you have access to the source code on the target?
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>From gdb-prs-return-21505-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 16:51:09 2017
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Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
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--- Comment #6 from vishwanath <vishwanath.patil at pathpartnertech dot com> ---
No , Even i am guessing now how can -g alone can help to get whole source code.
atleast break to function name will work ?
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>From gdb-prs-return-21506-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 16:58:24 2017
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
gdb process's virtual memory and terminate debug session
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
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CC| |sergiodj at redhat dot com
--- Comment #7 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the bug report. I see you have a possible patch to fix this issue,
and it is rather trivial (in the sense that it just modifies a few lines of
code). In this case, I would suggest you to submit the patch, along with a
description of what it does, to gdb-patches@sourceware.org. We have a wiki
page which contains a contribution checklist:
https://sourceware.org/gdb/wiki/ContributionChecklist.
Thanks.
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Subject: [Bug gdb/21419] Unable to list program after loading symbolic table
Date: Thu, 15 Jun 2017 18:13:00 -0000
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--- Comment #7 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
(In reply to vishwanath from comment #6)
> No , Even i am guessing now how can -g alone can help to get whole source
> code.
>
> atleast break to function name will work ?
If GDB doesn't have access to the source code, it cannot list the program. You
can verify that by compiling a simple program on your machine, and then
moving/removing the source code and trying to use the 'list' command inside
GDB.
As for break, yes, "break <name>" should work without access to the source
code.
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>From gdb-prs-return-21508-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 19:51:46 2017
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
gdb process's virtual memory and terminate debug session
Date: Thu, 15 Jun 2017 19:51:00 -0000
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--- Comment #8 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
BTW, bug is confirmed on i686 targets.
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>From gdb-prs-return-21509-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 15 20:02:07 2017
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
gdb process's virtual memory and terminate debug session
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--- Comment #9 from Kang <kanglictf at gmail dot com> ---
Got it! Will check how to fix this.
On Thu, Jun 15, 2017 at 3:51 PM, sergiodj at redhat dot com <
sourceware-bugzilla@sourceware.org> wrote:
> https://sourceware.org/bugzilla/show_bug.cgi?id=21600
>
> --- Comment #8 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
> BTW, bug is confirmed on i686 targets.
>
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Subject: [Bug backtrace/21600] Fail to detect invalid FDE header, can exhaust
gdb process's virtual memory and terminate debug session
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--- Comment #10 from Kang <kanglictf at gmail dot com> ---
BTW, we just tested on earlier version of gdb (7.4 & 7.7). The bug affects
earlier versions of gdb as well, i.e. malformed/malicious ELF binaries can
prevent gdb from debugging by forcing session termination. We will work on a
new patch.
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Subject: [Bug gdb/21603] New: powerpc-linux-gnu-gdb throws internal error on
remote debugging: 'gdbarch!=NULL' failed
Date: Fri, 16 Jun 2017 12:41:00 -0000
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Bug ID: 21603
Summary: powerpc-linux-gnu-gdb throws internal error on remote
debugging: 'gdbarch!=NULL' failed
Product: gdb
Version: 8.0
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This is with latest gdb 8.0, configured solely with
'--target=powerpc-linux-gnu' on a GNU/Linux 64bit host system. When I try to
remote debug through gdbserver on a PowerPC e500v2 system, I get the following
assertion:
(gdb) target remote 172.20.5.224:2345
Remote debugging using 172.20.5.224:2345
Reading symbols from /bsp/sysroot/lib/ld.so.1...(no debugging symbols
found)...done.
gdbarch.c:3228: internal-error: int
gdbarch_elf_make_msymbol_special_p(gdbarch*): Assertion `gdbarch != NULL'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
Version 7.12.1 has the same problem, but version 7.11 works, so this must be
due to a change between those two versions.
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Subject: [Bug gdb/21606] New: Python: gdb.SYMBOL_FUNCTIONS_DOMAIN misspelled
in documentation
Date: Fri, 16 Jun 2017 20:34:00 -0000
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Bug ID: 21606
Summary: Python: gdb.SYMBOL_FUNCTIONS_DOMAIN misspelled in
documentation
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https://sourceware.org/gdb/current/onlinedocs/gdb/Symbols-In-Python.html#Symbols-In-Python
That page documents "gdb.SYMBOL_FUNCTION_DOMAIN", but it's FUNCTION*S* rather
than FUNCTION. FUNCTIONS is correct on my 7.11 installation, but from a quick
grep of the 8.0 source, it doesn't seem to have changed names or had the docs
corrected.
Some of the documentation appears to be correct, and some is not:
$ grep -R SYMBOL_FUNCTIONS_DOMAIN
gdb/doc/python.texi:@vindex SYMBOL_FUNCTIONS_DOMAIN
gdb/guile/lib/gdb.scm: SYMBOL_FUNCTIONS_DOMAIN
gdb/python/py-symbol.c: || PyModule_AddIntConstant (gdb_module,
"SYMBOL_FUNCTIONS_DOMAIN",
$ grep -R SYMBOL_FUNCTION_DOMAIN
gdb/doc/python.texi:@item gdb.SYMBOL_FUNCTION_DOMAIN
gdb/doc/guile.texi:@item SYMBOL_FUNCTION_DOMAIN
gdb/doc/gdb.info-4:'gdb.SYMBOL_FUNCTION_DOMAIN'
gdb/doc/gdb.info-4:'SYMBOL_FUNCTION_DOMAIN'
(That's in gdb-8.0.tar.xz)
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Subject: [Bug gdb/21623] New: add-symbol-file not loading symbols at the
provided .text offset
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Bug ID: 21623
Summary: add-symbol-file not loading symbols at the provided
.text offset
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
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On a guest VM:
> # cat /sys/module/dm_crypt/sections/{.text,.data}
> 0xffffffffa049f000
> 0xffffffffa04a4000
Debugger:
> (gdb) add-symbol-file drivers/md/dm-crypt.ko 0xffffffffa049f000 -s .data 0xffffffffa04a4000
> add symbol table from file "drivers/md/dm-crypt.ko" at
> .text_addr = 0xffffffffa049f000
> .data_addr = 0xffffffffa04a4000
> (y or n) y
> Reading symbols from drivers/md/dm-crypt.ko...done.
> (gdb) p crypt_target.version
> $1 = {1, 15, 0}
> (gdb) info addr crypt_target
> Symbol "crypt_target" is static storage at address 0xffffffffa04a4020.
> (gdb) info addr dm_crypt_exit
> Symbol "dm_crypt_exit" is a function at address 0x4e.
> (gdb) b dm_crypt_exit
> Cannot access memory at address 0x4e
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Subject: [Bug gdb/21623] add-symbol-file not loading symbols at the provided
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Kamran Khan <krkhan at inspirated dot com> changed:
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>From gdb-prs-return-21515-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jun 19 19:58:05 2017
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Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Mon, 19 Jun 2017 19:58:00 -0000
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--- Comment #11 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Adam Stylinski from comment #10)
> So it's been about 3 months, any luck reproducing this?
I'm very sorry, I've not been able to work on this for some time, but I do have
plans to investigate this further soon. I just wanted to drop you a note
letting you know that I haven't (completely) forgotten about you/your problem.
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>From gdb-prs-return-21516-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 20 16:46:07 2017
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Subject: [Bug c++/16874] Setting a breakpoint on function in anonymous
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Martin Jambor <mjambor at suse dot cz> changed:
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--- Comment #13 from Martin Jambor <mjambor at suse dot cz> ---
...and so did I.
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>From gdb-prs-return-21518-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 01:33:30 2017
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Subject: [Bug gdb/21606] Python: gdb.SYMBOL_FUNCTIONS_DOMAIN misspelled in
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the report. Fixed upstream.
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>From gdb-prs-return-21517-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 01:33:04 2017
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Subject: [Bug gdb/21606] Python: gdb.SYMBOL_FUNCTIONS_DOMAIN misspelled in
documentation
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=eb83230b4d5c0129174937846ded9eaa9f78ff28
commit eb83230b4d5c0129174937846ded9eaa9f78ff28
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Tue Jun 20 21:30:11 2017 -0400
Fix PR gdb/21606: SYMBOL_FUNCTIONS_DOMAIN misspelled in documentation
Both Python and Guile documentations misspelled
SYMBOL_FUNCTIONS_DOMAIN, writing SYMBOL_FUNCTION_DOMAIN instead. This
obvious commit fixes it.
gdb/doc/ChangeLog:
2017-06-20 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21606
* python.texi (Python representation of Symbols.): Replace
SYMBOL_FUNCTION_DOMAIN by SYMBOL_FUNCTIONS_DOMAIN, fixing typo.
* guile.texi (Guile representation of Symbols.): Likewise.
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>From gdb-prs-return-21519-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 08:46:46 2017
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Subject: [Bug c++/16874] Setting a breakpoint on function in anonymous
namespace is unnecessarily awkward
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #14 from Pedro Alves <palves at redhat dot com> ---
This series will help with this:
[PATCH 00/40] C++ debugging improvements: breakpoints, TAB completion, more
https://sourceware.org/ml/gdb-patches/2017-06/msg00012.html
You can find it in the users/palves/cxx-breakpoint-improvements branch
meanwhile, if you want to give it a try.
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>From gdb-prs-return-21520-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 17:22:20 2017
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Subject: [Bug gdb/13877] gdb7.4 doesn't build on FreeBSD ia64
Date: Wed, 21 Jun 2017 17:22:00 -0000
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jhb at FreeBSD dot org changed:
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--- Comment #7 from jhb at FreeBSD dot org ---
FreeBSD/ia64 has been retired by FreeBSD. I do not think it is likely that
support for FreeBSD/ia64 will ever be added to upstream gdb at this point.
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>From gdb-prs-return-21521-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 17:23:43 2017
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Subject: [Bug gdb/21239] gdb doesn't show any threads for some users
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jhb at FreeBSD dot org changed:
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--- Comment #1 from jhb at FreeBSD dot org ---
Do you have a sample program that demonstrates this?
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>From gdb-prs-return-21522-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 17:27:16 2017
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jhb at FreeBSD dot org changed:
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--- Comment #1 from jhb at FreeBSD dot org ---
The code has changed and there is no longer an extern declaration of the
now-static variable in i386fbsd-tdep.h.
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>From gdb-prs-return-21523-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 17:42:48 2017
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Subject: [Bug build/18996] Build fails on FreesBSD 8.1
Date: Wed, 21 Jun 2017 17:42:00 -0000
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--- Comment #2 from jhb at FreeBSD dot org ---
Created attachment 10210
--> https://sourceware.org/bugzilla/attachment.cgi?id=10210&action=edit
nocoredump.patch
Please try this patch. I see that the NOCOREDUMP flag was added later in 8.x.
The upshot of this is that 'gcore' in gdb won't honor MAP_NOCORE flags passed
to mmap().
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>From gdb-prs-return-21524-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 17:47:17 2017
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Subject: [Bug breakpoints/13791] crash in breakpoint.c
Date: Wed, 21 Jun 2017 17:47:00 -0000
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jhb at FreeBSD dot org changed:
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--- Comment #1 from jhb at FreeBSD dot org ---
If you enabled the THREADS option in the gdb port that added an extra patch
with thread support using libthread_db that itself was somewhat buggy. It is
quite possible that the error was in that patch rather than in gdb itself.
Would you be able to retest with a more recent version of gdb (such as 7.11 or
later) which includes a different implementation of thread support?
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Subject: [Bug record/21655] New: Process record does not support instruction
0xf6f at address 0x400170
Date: Wed, 21 Jun 2017 20:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21655
Bug ID: 21655
Summary: Process record does not support instruction 0xf6f at
address 0x400170
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: record
Assignee: unassigned at sourceware dot org
Reporter: hjl.tools at gmail dot com
Target Milestone: ---
Target: x86-64
Created attachment 10211
--> https://sourceware.org/bugzilla/attachment.cgi?id=10211&action=edit
A testcase
[hjl@gnu-6 glibc-test]$ make
gcc -g -c -o test.o test.c
gcc -g -c -o record.o record.S
gcc -g -c -o start.o start.S
gcc -g -c -o syscall.o syscall.S
ld -o test test.o record.o start.o syscall.o
time ./test
0.00user 0.00system 0:00.00elapsed 73%CPU (0avgtext+0avgdata 288maxresident)k
0inputs+0outputs (0major+140minor)pagefaults 0swaps
[hjl@gnu-6 glibc-test]$ gdb ./test
GNU gdb (GDB) Fedora 7.12.1-48.fc25
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./test...done.
(gdb) b _start
Breakpoint 1 at 0x400175: file start.S, line 28.
(gdb) r
Starting program: /export/ssd/git/glibc-test/test
Breakpoint 1, _start () at start.S:28
28 xorl %ebp, %ebp
(gdb) record full
(gdb) c
Continuing.
Process record does not support instruction 0xf6f at address 0x400170.
Process record: failed to record execution log.
Program stopped.
record () at record.S:7
7 movq (%rsi,%rdx), %mm7
(gdb) disass/r
Dump of assembler code for function record:
=> 0x0000000000400170 <+0>: 0f 6f 3c 16 movq (%rsi,%rdx,1),%mm7
0x0000000000400174 <+4>: c3 retq
End of assembler dump.
(gdb)
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Subject: [Bug record/21655] Process record does not support instruction 0xf6f
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egbertst1 at gmail dot com changed:
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Subject: [Bug record/21655] Process record does not support instruction 0xf6f
at address 0x400170
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--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
i386_mmx_regnum_p (gdbarch=0xfd1940, regnum=6) returns false since
(top-gdb) p tdep->mm0_regnum
$4 = -1
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>From gdb-prs-return-21528-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 21 20:42:21 2017
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From: "egbertst1 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug record/21655] Process record does not support instruction 0xf6f
at address 0x400170
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--- Comment #2 from egbertst1 at gmail dot com ---
Confirmed.
Missing separate debuginfos, use: debuginfo-install libgcc-4.4.7-18.el6.x86_64
libstdc++-4.4.7-18.el6.x86_64 pcre-7.8-7.el6.x86_64
gdb$ record full
gdb$ set record full insn-number-max 2000000
gdb$ c
Continuing.
Process record does not support instruction 0xf6f at address 0x33af241b20.
Process record: failed to record execution log.
Program stopped.
__mpn_lshift () at ../sysdeps/x86_64/lshift.S:26
26 movq -8(%rsi,%rdx,8), %mm7
gdb$ x /i $pc
=> 0x33af241b20 <__mpn_lshift>: movq -0x8(%rsi,%rdx,8),%mm7
gdb$ x /4x $pc
0x33af241b20 <__mpn_lshift>: 0xd67c6f0f 0xc96e0ff8 0x000040b8 0x0fc82900
And wanted you to know that this bug has been reintroduced back in latest
binutils.
CentOS: 6.9
binutils-2.20.51.0.2-5.47.el6_9.1.x86_64
g++ 5.3.1 20160406
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Subject: [Bug record/21655] Process record does not support instruction 0xf6f
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--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #1)
> i386_mmx_regnum_p (gdbarch=0xfd1940, regnum=6) returns false since
>
> (top-gdb) p tdep->mm0_regnum
> $4 = -1
It is due to
/* Avoid wiring in the MMX registers for now. */
tdep->num_mmx_regs = 0;
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Subject: [Bug record/21655] Process record does not support instruction 0xf6f
at address 0x400170
Date: Wed, 21 Jun 2017 20:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21655
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to egbertst1 from comment #2)
>
> And wanted you to know that this bug has been reintroduced back in latest
> binutils.
>
It never worked.
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>From gdb-prs-return-21531-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 22 04:49:44 2017
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From: "bgkweb at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21656] New: Missing last character when target-charset set
to CP1255
Date: Thu, 22 Jun 2017 04:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21656
Bug ID: 21656
Summary: Missing last character when target-charset set to
CP1255
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: bgkweb at gmail dot com
Target Milestone: ---
When the target charset is set to CP1255, strings are most of the time missing
their last character.
Reproduction steps:
$ gdb
GNU gdb (GDB) 8.0
This GDB was configured as "x86_64-pc-linux-gnu".
(gdb) show host-charset
The host character set is "auto; currently UTF-8".
(gdb) set target-charset CP1255
(gdb) print "שתכננו"
$1 = "שתכננ"
(gdb)
Notice how the last "ו" from the input string is missing. (Hebrew is a right to
left language, the last character is on the left in a browser)
This is most likely due to the fact that CP1255 is a stateful encoding in iconv
and the iconv conversion state is not flushed.
man 3 iconv explains iconv must be called a second time with inbuf = NULL to
flush the conversion state to the output buffer. See also #1124.
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>From gdb-prs-return-21532-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 22 15:44:48 2017
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From: "sourceware.bugs at andred dot net" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21658] New: gdbserver invalid use of sigprocmask()
(fails to start on musl)
Date: Thu, 22 Jun 2017 15:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21658
Bug ID: 21658
Summary: gdbserver invalid use of sigprocmask() (fails to start
on musl)
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: sourceware.bugs at andred dot net
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Created attachment 10213
--> https://sourceware.org/bugzilla/attachment.cgi?id=10213&action=edit
fix
>From the attached patch:
--- snip ---
As per POSIX,
The pthread_sigmask() and sigprocmask() functions shall fail if:
[EINVAL]
The value of the how argument is not equal to one of the defined values.
and this is how musl-libc is currently doing.
---snap---
Please see attached patch (used both in OpenEmbedded and LEDE projects) fixing
the issue.
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From: "sourceware.bugs at andred dot net" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21658] gdbserver invalid use of sigprocmask() (fails to
start on musl)
Date: Thu, 22 Jun 2017 15:50:00 -0000
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André Draszik <sourceware.bugs at andred dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |std-posix
Target| |linux-musl
URL| |https://bugs.lede-project.o
| |rg/index.php?do=details&tas
| |k_id=637&openedfrom=-1%2Bwe
| |ek
Host| |linux-musl
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>From gdb-prs-return-21534-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jun 22 18:30:51 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21658] gdbserver invalid use of sigprocmask() (fails to
start on musl)
Date: Thu, 22 Jun 2017 18:30:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
The fix makes sense to me. Would you like to post this patch to
gdb-patches@sourceware.org and see what others think? I believe it should be
accepted as is, and you don't need a copyright assignment for it.
Thanks.
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>From gdb-prs-return-21535-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jun 23 08:19:20 2017
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From: "sourceware.bugs at andred dot net" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21658] gdbserver invalid use of sigprocmask() (fails to
start on musl)
Date: Fri, 23 Jun 2017 08:19:00 -0000
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--- Comment #2 from André Draszik <sourceware.bugs at andred dot net> ---
https://sourceware.org/ml/gdb-patches/2017-06/msg00671.html
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>From gdb-prs-return-21536-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jun 26 13:07:18 2017
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From: "jonah at kichwacoders dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21675] New: Regression since 8.0 in Printing/formatting
some values
Date: Mon, 26 Jun 2017 13:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21675
Bug ID: 21675
Summary: Regression since 8.0 in Printing/formatting some
values
Product: gdb
Version: HEAD
Status: UNCONFIRMED
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Priority: P2
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Assignee: unassigned at sourceware dot org
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For example on current HEAD:
$ gdb/gdb -q -ex 'print/o -5' -ex quit
$1 = 037773777773
Instead previous versions do this:
$ gdb.8.0 -q -ex 'print/o -5' -ex quit
$1 = 037777777773
AFAICT This is a regression caused by d9109c8080ac0a2caeaa5f3d51e8a3b4891a68a8
(Simplify print_scalar_formatted)
There are many other examples of things that fail in a similar way. They were
picked up by the DSF-GDB testsuite for Eclipse CDT.
https://ci.eclipse.org/cdt/view/Debug/job/debug-tests-master-gdb-master
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From: "jonah at kichwacoders dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Mon, 26 Jun 2017 13:30:00 -0000
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Jonah Graham <jonah at kichwacoders dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Regression since 8.0 in |Regression since 8.0
|Printing/formatting some |printing has changed format
|values |for decimal/octal/others
--- Comment #1 from Jonah Graham <jonah at kichwacoders dot com> ---
Here is another example, demonstrating the problem is not just octal printing:
$ gdb/gdb -q -ex 'print/d 1.5' -ex quit
$1 = 1.5
$ gdb.8.0 -q -ex 'print/d 1.5' -ex quit
$1 = 1
and
$ gdb/gdb -q -ex 'print/u 1.5' -ex quit
$1 = 4609434218613702656
$ gdb.8.0 -q -ex 'print/u 1.5' -ex quit
$1 = 1
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Subject: [Bug breakpoints/21497] FreeBSD: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Tue, 27 Jun 2017 00:05:00 -0000
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--- Comment #5 from jhb at FreeBSD dot org ---
So I've reworked my previous patchset a bit. It does automatically PT_SUSPEND
new threads and do an explicit PT_CONTINUE instead of returning an event to the
core and relying on the core to invoke fbsd_resume() to suspend the thread
similar to your patch, though I don't actually return an event but loop around
in fbsd_wait(). I also have attempted to add the same handling for the
non-LWP-event case. I've done some simple testing of these patches for both
LWP events and non-LWP events, but I'm not able to reproduce your original
issue either. (The one other test case for which my original patch referred to
above tried to handle is still not fixed by this patchset, but I don't see an
easy way to fix it and it only breaks for the non-LWP-event case.)
I've pushed my current set of changes to a 'fbsd_suspend_new_thr' branch at
github.com/bsdjhb/gdb.git. You can view a diff via:
https://github.com/bsdjhb/gdb/compare/master...fbsd_suspend_new_thr
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>From gdb-prs-return-21539-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 27 09:36:29 2017
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
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| |tromey at sourceware dot org
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>From gdb-prs-return-21540-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jun 27 19:50:20 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21681] New: Provide a way for GDB to conveniently attach to
processes by name
Date: Tue, 27 Jun 2017 19:50:00 -0000
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Bug ID: 21681
Summary: Provide a way for GDB to conveniently attach to
processes by name
Product: gdb
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lldb allows you to attach to processes by name if there's no ambiguity, I think
that's quite convenient. If there is some ambiguity, it shows you something
like this:
(lldb) attach gdb
error: attach failed: more than one process named gdb:
PID PARENT USER TRIPLE ARGUMENTS
====== ====== ========== ======================== ============================
43851 43820 simark x86_64-apple-macosx ./gdb
43784 43572 simark x86_64-apple-macosx ./gdb
--data-directory=data-directory /Users/simark/test
You can do "attach <name>" on the command line, or you can do "lldb -n <name>"
from the shell.
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>From gdb-prs-return-21541-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 28 02:01:32 2017
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Subject: [Bug gdb/21337] [mips] segfault when re-reading symbols with remote
debugging.
Date: Wed, 28 Jun 2017 02:01:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Maciej W. Rozycki <macro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=41664b45ab6387184bd0e7512fcf7a72c58744e7
commit 41664b45ab6387184bd0e7512fcf7a72c58744e7
Author: Doug Gilmore <Doug.Gilmore@imgtec.com>
Date: Wed Jun 28 02:54:22 2017 +0100
Fix PR 21337: segfault when re-reading symbols.
Fix issue exposed by commit 3e29f34.
The basic issue is that section data referenced through an objfile
pointer can also be referenced via the program-space data pointer,
although via a separate mapping mechanism, which is set up by
update_section_map. Thus once section data attached to an objfile
pointer is released, the section map associated with the program-space
data pointer must be marked dirty to ensure that update_section_map is
called to prevent stale data being referenced. For the matter at hand
this marking is being done via a call to objfiles_changed.
Before commit 3e29f34 objfiles_changed could be called after all of
the objfile pointers were processed in reread_symbols since section
data references via the program-space data pointer would not occur in
the calls of read_symbols performed by reread_symbols.
With commit 3e29f34 MIPS target specific calls to find_pc_section were
added to the code for DWARF information processing, which is called
via read_symbols. Thus in reread_symbols the call to objfiles_changed
needs to be called before calling read_symbols, otherwise stale
section data can be referenced.
Thanks to Luis Machado for providing text for the main comment
associated with the change.
gdb/
2017-06-28 Doug Gilmore <Doug.Gilmore@imgtec.com>
PR gdb/21337
* symfile.c (reread_symbols): Call objfiles_changed just before
read_symbols.
gdb/testsuite/
2017-06-28 Doug Gilmore <Doug.Gilmore@imgtec.com>
PR gdb/21337
* gdb.base/reread-readsym.exp: New file.
* gdb.base/reread-readsym.c: New file.
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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>From gdb-prs-return-21543-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 28 16:11:24 2017
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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--- Comment #4 from Joel Sherrill <joel.sherrill at oarcorp dot com> ---
An ArchLinux user reported this via RTEMS so I wanted to ask some questions.
Is this a problem with gdb 8?
Is there a way to detect the newer guile via autoconf and automatically disable
it?
And the basic question of... What is guile even used for? :)
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>From gdb-prs-return-21544-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 28 16:19:10 2017
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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--- Comment #5 from Freddie Chopin <freddie_chopin at op dot pl> ---
> Is this a problem with gdb 8?
Most likely yes, as in ArchLinux GDB 8.0 is build with older version of guile
(2.0).
> And the basic question of... What is guile even used for? :)
>From my understanding guile is used for the very same thing as python - you can
write guile (scheme) scripts in it and GDB will be able to understand them.
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>From gdb-prs-return-21545-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jun 28 16:24:03 2017
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
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--- Comment #6 from Joel Sherrill <joel.sherrill at oarcorp dot com> ---
(In reply to Freddie Chopin from comment #5)
> > Is this a problem with gdb 8?
>
> Most likely yes, as in ArchLinux GDB 8.0 is build with older version of
> guile (2.0).
Hmm... RTEMS has something we call the RTEMS Source Builder which is logically
comparable to BSD ports. The user uses it to automate fetching all the source,
applying patches, and building tools. That gives us two options:
+ add building a known guile as part of building gdb
+ disable guile.
> > And the basic question of... What is guile even used for? :)
>
> From my understanding guile is used for the very same thing as python - you
> can write guile (scheme) scripts in it and GDB will be able to understand
> them.
Thanks.
I don't want to get into an Internet war over guile vs Python but personally I
would lean to disabling guile for RTEMS.
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From: "mmalcomson.public at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21688] New: `python` command ignores argument when
invoked inside `if` clause
Date: Wed, 28 Jun 2017 19:17:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21688
Bug ID: 21688
Summary: `python` command ignores argument when invoked inside
`if` clause
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: mmalcomson.public at gmail dot com
Target Milestone: ---
For version 7.12 the following would print 'Hello'
```
(gdb) if 1
> python print('Hello')
> end
(gdb)
```
Now, with version 8.0 I get
```
(gdb) if 1
> python print('Hello')
> end
>
```
If I exit both nested structures ...
```
(gdb) if 1
> python print('Hello')
> end
> end
```
I get no output.
The following works as expected:
```
(gdb) python print('Hello')
Hello
(gdb)
```
It appears that the argument to the `python` function is getting ignored, but
only when in an `if` clause.
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To: gdb-prs@sourceware.org
Subject: [Bug server/21658] gdbserver invalid use of sigprocmask() (fails to
start on musl)
Date: Wed, 28 Jun 2017 19:52:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Well, apparently this is not a bug on GDB. I didn't know this topic had been
covered before, but the thread is here:
https://sourceware.org/ml/gdb-patches/2017-03/msg00426.html
Which, according to Pedro, lead to:
http://austingroupbugs.net/view.php?id=1132
So, given this outcome, I'm closing this bug as INVALID (since we don't have a
NOTABUG marker). Feel free to post updates to this issue here if you want,
though.
Thanks.
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To: gdb-prs@sourceware.org
Subject: [Bug python/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Wed, 28 Jun 2017 20:26:00 -0000
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CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I'm taking a look at this.
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To: gdb-prs@sourceware.org
Subject: [Bug python/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Wed, 28 Jun 2017 20:55:00 -0000
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
604c4576fdcfc4e7c28f569b3748a1b6b4e0dbd4 is the first bad commit
commit 604c4576fdcfc4e7c28f569b3748a1b6b4e0dbd4
Author: Jerome Guitton <guitton@adacore.com>
Date: Tue Jan 10 15:15:53 2017 +0100
Command abbreviation in define
When defining a new macro, "command" is not recognized as an alias for
"commands":
(gdb) define breakmain
Type commands for definition of "breakmain".
End with a line saying just "end".
>break main
>command
>echo "IN MAIN\n"
>end
(gdb)
There is a special case for while-stepping, where 'ws' and 'stepping' are
recognized explicitely. Instead of adding more special cases, this change
uses cli-decode.
gdb/ChangeLog:
* cli/cli-decode.c (find_command_name_length): Make it extern.
* cli/cli-decode.h (find_command_name_length): Declare.
* cli/cli-script.c (command_name_equals, line_first_arg):
New functions.
(process_next_line): Use cli-decode to parse command names.
(build_command_line): Make args a constant pointer.
gdb/testsuite/ChangeLog:
* gdb.base/define.exp: Add test for command abbreviations
in define.
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Subject: [Bug gdb/21689] New: artifacts in prompt rendering when using colors
Date: Wed, 28 Jun 2017 21:17:00 -0000
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Bug ID: 21689
Summary: artifacts in prompt rendering when using colors
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
Steps to reproduce:
1. Start "gdb -nh"
2. Type "set prompt \033[31mgdb λ \033[0m", press enter.
3. Press Ctrl+R, type "hello"
4. Press <Tab>
Result: you'll see the word "hello" at the prompt, even though there's actually
nothing.
FTR: found by using this gdbinit
https://github.com/gdbinit/Gdbinit/blob/master/gdbinit which is very popular.
Surprising that nobody reported.
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Subject: [Bug gdb/21690] New: Cannot interrupt failing command-history search
Date: Wed, 28 Jun 2017 21:26:00 -0000
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Bug ID: 21690
Summary: Cannot interrupt failing command-history search
Product: gdb
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Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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Steps:
1. Run "gdb -nh"
2. Press Ctrl+r, and type e.g. "f" (you should see a failing search)
3. Press Ctrl+c (you'll see it's interrupted)
4. Type e.g. "b"
Result: it resumes the failing search, and appends "b" there.
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To: gdb-prs@sourceware.org
Subject: [Bug python/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Wed, 28 Jun 2017 22:30:00 -0000
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I have a patch to fix the issue. I'm writing the testcase now, and will submit
eveything soon.
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Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Thu, 29 Jun 2017 01:16:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-06-29
Component|python |cli
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
Ever confirmed|0 |1
--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Moving to cli component and assigning to myself.
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Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Thu, 29 Jun 2017 02:06:00 -0000
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--- Comment #5 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Patch: https://sourceware.org/ml/gdb-patches/2017-06/msg00778.html
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To: gdb-prs@sourceware.org
Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Thu, 29 Jun 2017 04:10:00 -0000
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Orivej Desh <orivej at gmx dot fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |orivej at gmx dot fr
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Subject: [Bug gdb/21693] New: same length extra question fools unwary users
Date: Thu, 29 Jun 2017 14:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21693
Bug ID: 21693
Summary: same length extra question fools unwary users
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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The user thinks "Let me out of here. No I don't want to report anything":
----
^C
/build/gdb-AqwUtn/gdb-8.0/gdb/linux-nat.c:2010: internal-error: wait returned
unexpected status 0x0
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) q
Please answer y or n.
/build/gdb-AqwUtn/gdb-8.0/gdb/linux-nat.c:2010: internal-error: wait returned
unexpected status 0x0
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-AqwUtn/gdb-8.0/gdb/linux-nat.c:2010: internal-error: wait returned
unexpected status 0x0
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
----
The user didn't want to create a core file and use up all they bytes
left on his disk.
But you slipped an extra same sized question in at the end, which of
course the user thinks is just the third y or n to get out. (I mean you
already asked him if he wanted to quit, so he didn't expect any further
questions, he thought there was something wrong with some keypress
again, so unless he looks carefully, he will just hit y again.)
Maybe change the last question to "(c or n)".
gdb 8.0
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Subject: [Bug gdb/21337] [mips] segfault when re-reading symbols with remote
debugging.
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Doug Gilmore <Doug.Gilmore at imgtec dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Doug Gilmore <Doug.Gilmore at imgtec dot com> ---
Bug no longer occurs with ToT gdb (fixed per comment 2).
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Fri, 30 Jun 2017 11:15:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=51ed89aa0dce3db46561235efdc4bbc0661bcf37
commit 51ed89aa0dce3db46561235efdc4bbc0661bcf37
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Wed Jun 28 21:55:03 2017 -0400
PR cli/21688: Fix multi-line/inline command differentiation
This bug is a regression caused by the following commit:
604c4576fdcfc4e7c28f569b3748a1b6b4e0dbd4 is the first bad commit
commit 604c4576fdcfc4e7c28f569b3748a1b6b4e0dbd4
Author: Jerome Guitton <guitton@adacore.com>
Date: Tue Jan 10 15:15:53 2017 +0100
The problem happens because, on cli/cli-script.c:process_next_line,
GDB is not using the command line string to identify which command to
run, but it instead using the 'struct cmd_list_element *' that is
obtained by using the mentioned string. The problem with that is that
the 'struct cmd_list_element *' doesn't have any information on
whether the command issued by the user is a multi-line or inline one.
A multi-line command is a command that will necessarily be composed of
more than 1 line. For example:
(gdb) if 1
>python
>print ('hello')
>end
>end
As can be seen in the example above, the 'python' command actually
"opens" a new command line (represented by the change in the
indentation) that will then be used to enter Python code. OTOH, an
inline command is a command that is "self-contained" in a single line,
for example:
(gdb) if 1
>python print ('hello')
>end
This Python command is a one-liner, and therefore there is no other
Python code that can be entered for this same block. There is also no
change in the indentation.
So, the fix is somewhat simple: we have to revert the change and use
the full command line string passed to process_next_line in order to
identify whether we're dealing with a multi-line or an inline command.
This commit does just that. As can be seen, this regression also
affects other languages, like guile or the compile framework. To make
things clearer, I decided to create a new helper function responsible
for identifying a non-inline command.
Testcase is attached.
gdb/ChangeLog:
2017-06-30 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/21688
* cli/cli-script.c (command_name_equals_not_inline): New function.
(process_next_line): Adjust 'if' clauses for "python", "compile"
and "guile" to use command_name_equals_not_inline.
gdb/testsuite/ChangeLog:
2017-06-30 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/21688
* gdb.python/py-cmd.exp (test_python_inline_or_multiline): New
procedure. Call it.
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/21695] New: Loss of line info
Date: Fri, 30 Jun 2017 12:39:00 -0000
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Bug ID: 21695
Summary: Loss of line info
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: thopre01 at gcc dot gnu.org
Target Milestone: ---
Hi,
Using a trunk gdb built with:
./configure --target=arm-none-eabi --disable-nls --disable-sim --disable-gas
--disable-binutils --disable-ld --disable-gprof --with-libexpat --with-lzma=no
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --with-python=no
When loading the gdb_test.elf file attached to this ticket
(https://bugs.launchpad.net/gcc-arm-embedded/+bug/1700646), the following
occurs:
$ ../build-gdb/build-gdb-1/gdb/gdb
GNU gdb (GDB) 8.0.50.20170614-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) add-symbol-file gdb_test.elf 0x1fff0000 add symbol table from file
"gdb_test.elf" at
.text_addr = 0x1fff0000
(y or n) y
Reading symbols from gdb_test.elf...done.
(gdb) info line main
No line number information available for address 0x1fff0000 <main>
(gdb)
When the same elf file is run with gdb 7.8 built with the same configure, one
gets:
$ build-gdb-7-8/gdb/gdb
GNU gdb (GDB) 7.8.2.20150113-cvs
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) add-symbol-file gdb_test.elf 0x1fff0000 add symbol table from file
"gdb_test.elf" at
.text_addr = 0x1fff0000
(y or n) y
Reading symbols from gdb_test.elf...done.
(gdb) info line main
Line 76 of "main.c" starts at address 0x1fff0000 <main> and ends at
0x1fff0006 <main+6>.
(gdb)
So with the same configuration and object file, GDB 7.8 manages to display line
info but not trunk GDB.
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Subject: [Bug symtab/21695] Loss of line info
Date: Fri, 30 Jun 2017 12:40:00 -0000
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Thomas Preud'homme <thopre01 at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |arm-none-eabi
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Fri, 30 Jun 2017 13:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21688
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=dc4bde35d16df749e529229657b3468417937cfc
commit dc4bde35d16df749e529229657b3468417937cfc
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Fri Jun 30 08:27:29 2017 -0400
PR cli/21688: Detect aliases when issuing python/compile/guile commands
(and fix last commit)
My last commit fixed a regression that happened when using
inline/multi-line commands for Python/Compile/Guile, but introduced
another regression: it is now not possible to use aliases for the
commands mentioned above. The fix is to almost revert the change I've
made and go back to using the 'struct cmd_list_element *', but at the
same time make sure that we advance the 'cmd_name' variable past all
the whitespace characters after the command name. If, after skipping
the whitespace, we encounter a '\0', it means that the command is not
inline. Otherwise, it is.
This patch also expands the testcase in order to check for aliases and
for trailing whitespace after the command name.
gdb/ChangeLog:
2017-06-30 Sergio Durigan Junior <sergiodj@redhat.com>
Pedro Alves <palves@redhat.com>
PR cli/21688
* cli/cli-script.c (command_name_equals_not_inline): Remove function.
(process_next_line): New variable 'inline_cmd'.
Adjust 'if' clauses for "python", "compile" and "guile" to use
'command_name_equals' and check for '!inline_cmd'.
gdb/testsuite/ChangeLog:
2017-06-30 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/21688
* gdb.python/py-cmd.exp (test_python_inline_or_multiline): Add new
tests for alias commands and trailing whitespace.
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Subject: [Bug cli/21688] `python` command ignores argument when invoked
inside `if` clause
Date: Fri, 30 Jun 2017 13:51:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #8 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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From: "belagod at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21698] New: Stepping from python interface broken?
Date: Sat, 01 Jul 2017 10:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21698
Bug ID: 21698
Summary: Stepping from python interface broken?
Product: gdb
Version: 8.0.1
Status: NEW
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: belagod at gcc dot gnu.org
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I built my trunk and 7.10 gdb configured as:
$ configure --disable-nls --disable-sim --disable-gas --disable-binutils
--disable-ld --disable-gprof --with-libexpat --with-lzma=no
--with-python=yes --prefix=/tmp/val/build-gdb/native/7.10/install/
--with-gdb-datadir=/tmp/val/build-gdb/native/7.10/install/share/gdb
on x86_64 Ubuntu 14.04
I'm trying to debug a program with gdbserver and gdb.
For trunk gdb,
In one terminal on host:
$ gdbserver localhost:3334 ./a.out
Process ./a.out created; pid = 17642
Listening on port 3334
Another terminal:
$ ../build-gdb/native/trunk/install/bin/gdb -x gdb_simple.py ./a.out
GNU gdb (GDB) 8.0.50.20170630-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a.out...done.
(gdb) Reading /lib64/ld-linux-x86-64.so.2 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot"
to access files locally instead.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading /lib64/ld-2.19.so from remote target...
warning: the debug information found in "target:/lib64/ld-2.19.so" does
not match "target:/lib64/ld-linux-x86-64.so.2" (CRC mismatch).
Reading /lib64/.debug/ld-2.19.so from remote target...
0x00007ffff7ddb2d0 in ?? () from target:/lib64/ld-linux-x86-64.so.2
Step returned: ''
0x00007ffff7ddb2d3 in ?? () from target:/lib64/ld-linux-x86-64.so.2
<It stops here hanging>
For gdb 7.10:
$ gdbserver localhost:3334 ./a.out
Process ./a.out created; pid = 17642
Listening on port 3334
$ ../build-gdb/native/7.10/install/bin/gdb -x gdb_simple.py ./a.out
GNU gdb (GDB) 7.10.1.20160210-cvs
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a.out...done.
(gdb) Reading /lib64/ld-linux-x86-64.so.2 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot"
to access files locally instead.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading /lib64/ld-2.19.so from remote target...
warning: the debug information found in "target:/lib64/ld-2.19.so" does
not match "target:/lib64/ld-linux-x86-64.so.2" (CRC mismatch).
Reading /lib64/.debug/ld-2.19.so from remote target...
0x00007ffff7ddb2d0 in ?? () from target:/lib64/ld-linux-x86-64.so.2
Step returned: '0x00007ffff7ddb2d3 in ?? () from
target:/lib64/ld-linux-x86-64.so.2
'
Step returned: '0x00007ffff7ddea40 in ?? () from
target:/lib64/ld-linux-x86-64.so.2
'
Step returned: '0x00007ffff7ddea41 in ?? () from
target:/lib64/ld-linux-x86-64.so.2
'
Step returned: '0x00007ffff7ddea44 in ?? () from
target:/lib64/ld-linux-x86-64.so.2
'
Step returned: '0x00007ffff7ddea46 in ?? () from
target:/lib64/ld-linux-x86-64.so.2
'
Stepping successful
Where gdb_simple.py is
https://bugs.launchpad.net/gcc-arm-embedded/+bug/1700595/+attachment/4903671/+files/gdb_script_simple.py
and a.out is a hello world compiled using 'gcc -g hello.c'
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From: "belagod at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21698] Stepping from python interface broken?
Date: Sat, 01 Jul 2017 10:23:00 -0000
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Tejas Belagod <belagod at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Host| |x86_64-linux
Build| |x86_64-linux
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From: "mmalcomson.public at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21699] New: printf "%s", $_as_string(...) can include
characters from the child
Date: Sun, 02 Jul 2017 10:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21699
Bug ID: 21699
Summary: printf "%s", $_as_string(...) can include characters
from the child
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: minor
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: mmalcomson.public at gmail dot com
Target Milestone: ---
Created attachment 10235
--> https://sourceware.org/bugzilla/attachment.cgi?id=10235&action=edit
Test program
When calling `printf`, the value gets put into the child process and printed
from there.
Python strings coerced to gdb values are not NULL terminated.
Combined, this means that calling the `printf` command with a python string
results in printing a string that isn't NULL terminated in the inferior.
This can hence result in extra junk in the output.
e.g. a session running on the attached program
~ [11:48:23] % share/repos/gdb-source/build/gdb/gdb -q
--data-directory="/usr/share/gdb" test
Reading symbols from test...done.
(gdb) start
Temporary breakpoint 1 at 0x4004c8: file test.c, line 17.
Starting program: /home/matthew/test
Temporary breakpoint 1, main () at test.c:17
17 return 0;
(gdb) printf "%s\n", $_as_string("hello")
"hello"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
(gdb) quit
A debugging session is active.
Inferior 1 [process 13368] will be killed.
Quit anyway? (y or n) y
~ [11:49:07] %
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Subject: [Bug python/21699] printf "%s", $_as_string(...) can include
characters from the child
Date: Sun, 02 Jul 2017 12:45:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Don't do that then?
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>From gdb-prs-return-21567-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 02 13:25:11 2017
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From: "mmalcomson.public at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21699] printf "%s", $_as_string(...) can include
characters from the child
Date: Sun, 02 Jul 2017 13:25:00 -0000
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--- Comment #2 from Matthew Malcomson <mmalcomson.public at gmail dot com> ---
I don't, I work around it in a few user commands I define.
I still thought it counted as a bug and that people might like to know.
I did hope the Python string coercion might be changed to include a NULL
terminator, but if you don't feel like doing it that's fair enough.
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>From gdb-prs-return-21568-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 04 14:18:56 2017
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From: "jhb at FreeBSD dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 04 Jul 2017 14:18:00 -0000
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jhb at FreeBSD dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-07-04
CC| |jhb at FreeBSD dot org
Assignee|unassigned at sourceware dot org |jhb at FreeBSD dot org
Target Milestone|--- |8.0.1
Ever confirmed|0 |1
--- Comment #1 from jhb at FreeBSD dot org ---
This is a regression in 7.12 and later (including 8.0). It results in build
failures on both FreeBSD and OS X. It probably results in runtime failures on
Linux as the powerpc simulator code is invoking the 'error' function from glibc
with a different prototype.
A patch has been posted to gdb-patches@ since November of 2016 but is awaiting
review by an approver.
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>From gdb-prs-return-21569-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 05 17:11:38 2017
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From: "marc-andre.hebert at tmx dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21714] New: static member derived class print loop
Date: Wed, 05 Jul 2017 17:11:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21714
Bug ID: 21714
Summary: static member derived class print loop
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: marc-andre.hebert at tmx dot com
Target Milestone: ---
While trying to debug some of our source code, I stumbled upon a crash.
It seems very similar in description to bugs 9167 and 10687 but it is still
failing in 8.0 (also confirmed under 7.11.1).
When using mi2 gdb does a segfault. With usual command line the print loops.
Here is a sample code:
class MyClass
{
public:
int mValue;
MyClass(int Value=0) : mValue(Value) {}
static MyClass StaticMember;
};
class MyClass2 : public MyClass
{
public:
double mValue;
MyClass2(double Value=0.0) : mValue(Value) {}
static MyClass2 StaticMember2;
};
MyClass MyClass::StaticMember(100);
MyClass2 MyClass2::StaticMember2(100);
int main(int argc, char** charv)
{
MyClass2 i;
return -1;
}
------------------------------
(gdb) print i
$1 = {<MyClass> = {mValue = 0, static StaticMember = {mValue = 100, static
StaticMember = <same as static member of an already seen type>}}, mValue = 0,
static StaticMember2 = {<MyClass> = {mValue = 0, static StaticMember = {
mValue = 100, static StaticMember = <same as static member of an
already seen type>}}, mValue = 100, static StaticMember2 = {<MyClass> = {mValue
= 0, static StaticMember = {mValue = 100,
static StaticMember = <same as static member of an already seen
type>}}, mValue = 100, static StaticMember2 = {<MyClass> = {mValue = 0, static
StaticMember = {.....
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>From gdb-prs-return-21570-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 05 20:58:12 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug exp/21717] New: "print $fpscr" says "<unavailable>" until some
VFP data register is printed
Date: Wed, 05 Jul 2017 20:58:00 -0000
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Bug ID: 21717
Summary: "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: exp
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
Target Milestone: ---
To reproduce:
1. Run the following command to start debuggee and stop at entry point:
gdb /bin/true -ex 'b *0' -ex r -ex 'd 1'
2. Issue "p $fpscr", see the output "$1 = <unavailable>" (the bug)
3. Issue "p $s0", see output "$2 = 0"
4. Now you can finally get FPSCR via "p $fpscr", having "$3 = 0" as output
5. Step one instruction using "si" command
6. Issue "p $fpscr" to see <unavailable> again
Tested on Raspberry Pi 1 Model B under Raspbian GNU/Linux 8.
/proc/cpuinfo says:
model name : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS : 697.95
Features : half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xb76
CPU revision : 7
Hardware : BCM2835
Revision : 000e
Serial : 000000009c40fec4
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>From gdb-prs-return-21571-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jul 06 17:46:50 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21693] same length extra question fools unwary users
Date: Thu, 06 Jul 2017 17:46:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I'm not sure about changing the answer expected; "y or n" is a default question
and there's infrastructure for generating it on GDB already. However, I can
relate to the complaint that the error message is repeated before the corefile
question. Maybe something like:
==
/build/gdb-AqwUtn/gdb-8.0/gdb/linux-nat.c:2010: internal-error: wait returned
unexpected status 0x0
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
Create a core file of GDB? (y or n) y
==
would be clearer. I'll propose a patch soon to adjust that. Would that work
for you?
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>From gdb-prs-return-21572-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 07 06:23:00 2017
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From: "jidanni at jidanni dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21693] same length extra question fools unwary users
Date: Fri, 07 Jul 2017 06:22:00 -0000
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--- Comment #2 from jidanni at jidanni dot org ---
(In reply to Sergio Durigan Junior from comment #1)
> would be clearer. I'll propose a patch soon to adjust that. Would that
> work for you?
No because you are asking the same exact two questions.
When you ask if he wants to quit and he says yes, then "keep your promise"
and let him quit, no further questions.
If you want to ask about making corefiles, do so first, before asking him if he
wants to quit.
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>From gdb-prs-return-21573-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 07 21:19:35 2017
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Subject: [Bug gdb/21693] same length extra question fools unwary users
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
(In reply to jidanni from comment #2)
> (In reply to Sergio Durigan Junior from comment #1)
> > would be clearer. I'll propose a patch soon to adjust that. Would that
> > work for you?
> No because you are asking the same exact two questions.
No, it is not.
> When you ask if he wants to quit and he says yes, then "keep your promise"
> and let him quit, no further questions.
>
> If you want to ask about making corefiles, do so first, before asking him if
> he wants to quit.
Well, it is possible to generate a corefile and not quit, so I think it makes
sense to ask the user if she wants a corefile before asking if she wants to
quit the debugging sessions.
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>From gdb-prs-return-21574-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 08 06:46:59 2017
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To: gdb-prs@sourceware.org
Subject: [Bug tui/21737] New: TUI becomes garbled when GDB is not waiting for
input but receives a newline while cursor is at the bottom
Date: Sat, 08 Jul 2017 06:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21737
Bug ID: 21737
Summary: TUI becomes garbled when GDB is not waiting for input
but receives a newline while cursor is at the bottom
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tui
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
Target Milestone: ---
To reproduce:
1. Launch GDB as:
gdb -tui /bin/sleep -ex 'layout asm' -ex 'catch syscall nanosleep' -ex 'r 5'
-ex 'set pagination off' -ex 'info all-reg'
2. When the inferior stops, type "ni" followed by two or more <Return> presses
3. Notice how the console contents moved up as you pressed <Return> the second
time
4. Now after 5 seconds, when the inferior stops, the screen is partially
updated, leaving no longer valid contents in multiple places: the old (scrolled
up) highlighted current line in the disassembly window, the disassembly
(partially correct, partially scrolled), PC value in the bottom-right corner of
the disassembly window (its updated lowest digits are under the old "status
bar"), ...
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>From gdb-prs-return-21575-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 08 06:56:02 2017
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Subject: [Bug tui/21737] TUI becomes garbled when GDB is not waiting for
input but receives a newline while cursor is at the bottom
Date: Sat, 08 Jul 2017 06:56:00 -0000
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--- Comment #1 from Ruslan <b7.10110111 at gmail dot com> ---
Created attachment 10253
--> https://sourceware.org/bugzilla/attachment.cgi?id=10253&action=edit
How it looks after several "ni" steps because of garbling
Here is a screenshot of how the TUI looks after I repeated the "ni" command
after the inferior's syscall ended, to exit from __kernel_vsyscall.
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>From gdb-prs-return-21576-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 09 22:20:07 2017
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
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----------------------------------------------------------------------------
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>From gdb-prs-return-21577-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 09 23:13:51 2017
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Subject: [Bug gdb/21623] add-symbol-file not loading symbols at the provided
.text offset
Date: Sun, 09 Jul 2017 23:13:00 -0000
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--- Comment #1 from Kamran Khan <krkhan at inspirated dot com> ---
Ping.. This can be repro-ed reliably using gdb-8 and any 4.10 series kernel.
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>From gdb-prs-return-21578-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 10 21:43:16 2017
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Subject: [Bug gdb/21747] New: gdb disassembly uses wrong range for
non-contiguous (partitioned) functions
Date: Mon, 10 Jul 2017 21:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21747
Bug ID: 21747
Summary: gdb disassembly uses wrong range for non-contiguous
(partitioned) functions
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: maks at fb dot com
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Created attachment 10254
--> https://sourceware.org/bugzilla/attachment.cgi?id=10254&action=edit
.s with partitioned function "foo"
When disassembling a function with non-contiguous address range, e.g.
partitioned into fragments after PGO, gdb appears to use an address range of
[min(low1, low2), max(high1, high2)) instead of using 2 address ranges [low1,
high1), [low2, high2) indicated in DWARF.
The attached .s test case was compiled with PGO on x86-64 using GCC 4.9.
$ gcc -o code-split code-split.s
$ gdb code-split
...
(gdb) disassemble foo
Dump of assembler code for function foo:
0x0000000000400440 <+0>: mov $0x400616,%edi
0x0000000000400445 <+5>: callq 0x400410 <puts@plt>
0x000000000040044a <+10>: mov $0x2a,%eax
0x000000000040044f <+15>: jmpq 0x400489 <foo+25>
0x0000000000400454 <+20>: nopw %cs:0x0(%rax,%rax,1)
0x000000000040045e <+30>: xchg %ax,%ax
0x0000000000400460 <+0>: push %rax
0x0000000000400461 <+1>: callq 0x400470 <foo>
0x0000000000400466 <+6>: xor %eax,%eax
0x0000000000400468 <+8>: pop %rdx
0x0000000000400469 <+9>: retq
0x000000000040046a: nopw 0x0(%rax,%rax,1)
0x0000000000400470 <+0>: sub $0x1,%edi
0x0000000000400473 <+3>: push %rcx
0x0000000000400474 <+4>: jg 0x400440 <foo>
0x000000000040047a <+10>: mov $0x400610,%edi
0x000000000040047f <+15>: callq 0x400410 <puts@plt>
0x0000000000400484 <+20>: mov $0x27,%eax
0x0000000000400489 <+25>: pop %rdx
0x000000000040048a <+26>: retq
End of assembler dump.
The disassembly includes both fragments of function "foo" and function "main"
in-between the two. It becomes ugly when there's more code between fragments in
the binary.
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>From gdb-prs-return-21579-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 11 02:34:08 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Tue, 11 Jul 2017 02:34:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Jonah Graham from comment #1)
> Here is another example, demonstrating the problem is not just octal
> printing:
> $ gdb.8.0 -q -ex 'print/d 1.5' -ex quit
> $1 = 1
> $ gdb.8.0 -q -ex 'print/u 1.5' -ex quit
> $1 = 1
These still seem weird to me but I think we agreed to try to preserve
this in:
https://sourceware.org/ml/gdb-patches/2017-06/msg00314.html
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>From gdb-prs-return-21580-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 11 10:57:43 2017
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21555] "error re-setting breakpoint" on PIE
executables
Date: Tue, 11 Jul 2017 10:57:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-07-11
CC| |qiyao at gcc dot gnu.org
Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Mine.
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>From gdb-prs-return-21581-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 11 12:25:48 2017
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Jonah Graham from comment #0)
> For example on current HEAD:
> $ gdb/gdb -q -ex 'print/o -5' -ex quit
> $1 = 037773777773
This bug is that one of the constants in print_octals_chars is wrong.
I guess it's been wrong for years and years and nobody noticed before...
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>From gdb-prs-return-21582-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 11 12:56:43 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Tue, 11 Jul 2017 12:56:00 -0000
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
(In reply to Tom Tromey from comment #2)
> (In reply to Jonah Graham from comment #1)
> > Here is another example, demonstrating the problem is not just octal
> > printing:
>
> > $ gdb.8.0 -q -ex 'print/d 1.5' -ex quit
> > $1 = 1
>
> > $ gdb.8.0 -q -ex 'print/u 1.5' -ex quit
> > $1 = 1
>
> These still seem weird to me
OOC, how would you see them ideally be printed?
> but I think we agreed to try to preserve this in:
> https://sourceware.org/ml/gdb-patches/2017-06/msg00314.html
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
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--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #4)
> > https://sourceware.org/ml/gdb-patches/2017-06/msg00314.html
For floating point types, I think /d and /u should work just like
not having a flag; /o should probably just be an error or ignored,
and /x should print in hex float. I'm not sure what /t should do.
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>From gdb-prs-return-21584-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 11 19:58:53 2017
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
Given structs with mixed types, it seems to me that erroring wouldn't be
desirable. E.g.:
struct { int i; float f; } var;
(gdb) p /o var
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
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--- Comment #7 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #6)
> Given structs with mixed types, it seems to me that erroring wouldn't be
> desirable. E.g.:
>
> struct { int i; float f; } var;
> (gdb) p /o var
Good point. Maybe /o and /t could be ignored for floating point.
My main concern there would be possible confusion (like, "p/t 1.1"
could be weird) -- though on the other hand I think the current
behavior is already very confusing.
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From: "adi.raghava3 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21755] New: No "step" event
Date: Wed, 12 Jul 2017 07:28:00 -0000
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Bug ID: 21755
Summary: No "step" event
Product: gdb
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I am trying to save the value of a register at every execution.
I am not sure if record would be the correct fit. I was hoping there is a space
to call a hook for every step, or next command.
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Subject: [Bug python/21755] No "step" event
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adi.raghava3 at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |KL46Z (arm cortex m0+)
CC| |adi.raghava3 at gmail dot com
Host| |Mac OSX
Version|unknown |7.0
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Subject: [Bug remote/21761] New: Missed step-resume breakpoints when placed
over a false conditional breakpoint
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https://sourceware.org/bugzilla/show_bug.cgi?id=21761
Bug ID: 21761
Summary: Missed step-resume breakpoints when placed over a
false conditional breakpoint
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
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A step-resume breakpoint placed at the same address as a conditional breakpoint
whose condition is false (condition evaluated by target) is missed. The reason
is that GDB doesn't consider the step-resume breakpoint when deciding what the
final condition for this address should be. As a result, we place a breakpoint
whose condition is false. The placed breakpoint should be unconditional,
because step-resume breakpoints are always unconditional.
I'll attach a test that fails with running with native-gdbserver:
$ make check TESTS="*/step-into-function-on-false-break-cond.exp"
RUNTESTFLAGS="--target_board=native-gdbserver"
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Subject: [Bug remote/21761] Missed step-resume breakpoints when placed over a
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--- Comment #1 from Simon Marchi <simon.marchi at ericsson dot com> ---
Created attachment 10255
--> https://sourceware.org/bugzilla/attachment.cgi?id=10255&action=edit
Test file (exp)
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>From gdb-prs-return-21590-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 12 15:29:20 2017
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Subject: [Bug remote/21761] Missed step-resume breakpoints when placed over a
false conditional breakpoint
Date: Wed, 12 Jul 2017 15:29:00 -0000
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--- Comment #2 from Simon Marchi <simon.marchi at ericsson dot com> ---
Created attachment 10256
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Test file (c)
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>From gdb-prs-return-21591-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 12 20:09:02 2017
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Subject: [Bug rust/21763] New: gdb.lookup_type fails for rust
Date: Wed, 12 Jul 2017 20:09:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21763
Bug ID: 21763
Summary: gdb.lookup_type fails for rust
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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The Python API gdb.lookup_type fails for Rust.
>From jrmuizel:
struct Foo {
g: u32,
h: u32
}
fn main() {
let f = Foo{ g: 8, h: 9 };
println!("Hello, world!");
}
gives:
(gdb) python print(gdb.lookup_type(str(gdb.parse_and_eval("f").type)))
Traceback (most recent call last):
File "<string>", line 1, in <module>
gdb.error: No type named tmp::Foo.
Error while executing Python code.
(gdb)
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/21764] New: sizeof(type) does not work in rust
Date: Wed, 12 Jul 2017 20:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21764
Bug ID: 21764
Summary: sizeof(type) does not work in rust
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
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See the test case in https://sourceware.org/bugzilla/show_bug.cgi?id=21763
Printing the size of q::Foo does not work:
(gdb) p sizeof(q::Foo)
?error in operator_length_standard
It works ok for i32, though.
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Subject: [Bug rust/21763] gdb.lookup_type fails for rust
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Jeff Muizelaar <jrmuizel at gmail dot com> changed:
What |Removed |Added
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Subject: [Bug rust/21764] sizeof(type) does not work in rust
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>From gdb-prs-return-21595-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 12 22:59:25 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21763] gdb.lookup_type fails for rust
Date: Wed, 12 Jul 2017 22:59:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21763
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
The issue seems to be that lookup_typename looks in VAR_DOMAIN,
but the symbol in question is in STRUCT_DOMAIN.
Two possible fixes come to mind.
One is to attempt to put all Rust types into VAR_DOMAIN.
This arguably even makes sense because VAR_DOMAIN is defined
as holding typedefs (which seems weird -- having a real
"types" domain might be preferable, but much harder).
This change could probably be done just in dwarf2read.c,
though patching rust_lookup_type would be good to do as well.
It's unclear what other issues this might introduce.
The second possible fix is to have typy_lookup_typename
also search STRUCT_DOMAIN if the VAR_DOMAIN search fails.
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>From gdb-prs-return-21596-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 12 23:01:23 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21765] New: gdb.SYMBOL_TYPES_DOMAIN leads to wrong
behavior
Date: Wed, 12 Jul 2017 23:01:00 -0000
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Bug ID: 21765
Summary: gdb.SYMBOL_TYPES_DOMAIN leads to wrong behavior
Product: gdb
Version: unknown
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Python defines this:
|| PyModule_AddIntConstant (gdb_module, "SYMBOL_TYPES_DOMAIN",
TYPES_DOMAIN) < 0)
... however if this is actually passed to gdb.lookup_symbol
(as seemingly recommended in the docs), the result will not do
what the user might expect, as TYPES_DOMAIN isn't a constant
in domain_enum, but rather in search_domain.
This applies to SYMBOL_VARIABLES_DOMAIN and SYMBOL_FUNCTIONS_DOMAIN
as well.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/21763] gdb.lookup_type fails for rust
Date: Thu, 13 Jul 2017 02:26:00 -0000
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Actually the simplest is just adding to the special case in
symbol_matches_domain. I sort of hate to do this but...
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Subject: [Bug gdb/21769] New: crash in maint selftest
Date: Thu, 13 Jul 2017 12:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21769
Bug ID: 21769
Summary: crash in maint selftest
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
Target Milestone: ---
I get a crash in main selftest:
(gdb) maint selftest
During symbol reading, DW_AT_GNU_call_site_target target DIE has invalid low
pc, for referencing DIE 0x2648fee [in module /home/tromey/gdb/build/gdb/gdb].
During symbol reading, cannot get low and high bounds for subprogram DIE at
40144933.
Program received signal SIGSEGV, Segmentation fault.
During symbol reading, incomplete CFI data; unspecified registers (e.g., rax)
at 0x7810f7.
During symbol reading, unsupported tag: 'DW_TAG_unspecified_type'.
During symbol reading, unexpected tag in read_type_die:
'DW_TAG_rvalue_reference_type'.
During symbol reading, No DW_FORM_block* DW_AT_GNU_call_site_value for
DW_TAG_GNU_call_site child DIE 0x200f297 [in module
/home/tromey/gdb/build/gdb/gdb].
During symbol reading, Child DIE 0x200ec01 and its abstract origin 0x20169af
have different parents.
htab_remove_elt_with_hash (htab=htab@entry=0x106f210, element=<optimized out>,
hash=<optimized out>) at ../../binutils-gdb/libiberty/hashtab.c:728
(top-gdb) p slot
$1 = (void **) 0x0
(top-gdb) up
#1 0x0000000000781121 in htab_remove_elt (htab=htab@entry=0x106f210,
element=<optimized out>) at ../../binutils-gdb/libiberty/hashtab.c:714
(top-gdb)
During symbol reading, Multiple children of DIE 0x9baae refer to DIE 0x9c1c3 as
their abstract origin.
#2 0x00000000006742b0 in tdesc_use_registers (gdbarch=gdbarch@entry=0x106d6d0,
target_desc=0xdb4960, early_data=early_data@entry=0x106c2e0) at
../../binutils-gdb/gdb/target-descriptions.c:1328
(top-gdb)
#3 0x000000000042fb8d in i386_gdbarch_init (info=..., arches=<optimized out>)
at ../../binutils-gdb/gdb/i386-tdep.c:8634
(top-gdb)
#4 0x00000000005c4071 in gdbarch_find_by_info (info=...) at
../../binutils-gdb/gdb/gdbarch.c:5394
(top-gdb) down
#3 0x000000000042fb8d in i386_gdbarch_init (info=..., arches=<optimized out>)
at ../../binutils-gdb/gdb/i386-tdep.c:8634
(top-gdb)
#2 0x00000000006742b0 in tdesc_use_registers (gdbarch=gdbarch@entry=0x106d6d0,
target_desc=0xdb4960, early_data=early_data@entry=0x106c2e0) at
../../binutils-gdb/gdb/target-descriptions.c:1328
This patch seems to fix the problem for me, but since I don't know if there's
some underlying issue, and due to lack of time, I'm just going to leave it here
rather than try to submit it.
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 0b5b46f..836e640 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -1325,7 +1325,12 @@ tdesc_use_registers (struct gdbarch *gdbarch,
VEC_iterate (tdesc_arch_reg, data->arch_regs, ixr, arch_reg);
ixr++)
if (arch_reg->reg)
- htab_remove_elt (reg_hash, arch_reg->reg);
+ {
+ void **slot = htab_find_slot (reg_hash, arch_reg->reg, NO_INSERT);
+
+ if (slot != NULL)
+ htab_clear_slot (reg_hash, slot);
+ }
/* Assign numbers to the remaining registers and add them to the
list of registers. The new numbers are always above gdbarch_num_regs.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21769] crash in maint selftest
Date: Thu, 13 Jul 2017 12:41:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21769
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This seems to affect ordinary startup as well sometimes.
(top-gdb) run
Starting program: /home/tromey/gdb/build/gdb/gdb -nx
./outputs/gdb.rust/simple/simple
...
Program received signal SIGSEGV, Segmentation fault.
htab_remove_elt_with_hash (
During symbol reading, incomplete CFI data; unspecified registers (e.g., rax)
at 0x7810f7.
During symbol reading, unsupported tag: 'DW_TAG_unspecified_type'.
During symbol reading, unexpected tag in read_type_die:
'DW_TAG_rvalue_reference_type'.
During symbol reading, No DW_FORM_block* DW_AT_GNU_call_site_value for
DW_TAG_GNU_call_site child DIE 0x200f054 [in module
/home/tromey/gdb/build/gdb/gdb].
During symbol reading, Child DIE 0x200e9be and its abstract origin 0x201676c
have different parents.
htab=htab@entry=0xfa0520, element=<optimized out>, hash=<optimized out>) at
../../binutils-gdb/libiberty/hashtab.c:728
728 if (*slot == HTAB_EMPTY_ENTRY)
(top-gdb) bt
#0 0x00000000007810d0 in htab_remove_elt_with_hash (htab=0xfa0520,
element=<optimized out>, hash=<optimized out>) at
../../binutils-gdb/libiberty/hashtab.c:728
During symbol reading, Multiple children of DIE 0x9baae refer to DIE 0x9c1c3 as
their abstract origin.
#1 0x0000000000781121 in htab_remove_elt (htab=0xfa0520, element=<optimized
out>)
at ../../binutils-gdb/libiberty/hashtab.c:714
#2 0x00000000006742b0 in tdesc_use_registers(gdbarch*, target_desc const*,
tdesc_arch_data*) (gdbarch=0xfb21e0, target_desc=0xdc08b0, early_data=0xf4b170)
at ../../binutils-gdb/gdb/target-descriptions.c:1328
#3 0x000000000042fb8d in i386_gdbarch_init(gdbarch_info, gdbarch_list*)
(info=..., arches=<optimized out>)
at ../../binutils-gdb/gdb/i386-tdep.c:8634
#4 0x00000000005c4071 in gdbarch_find_by_info(gdbarch_info) (info=...)
at ../../binutils-gdb/gdb/gdbarch.c:5394
#5 0x000000000051c605 in set_gdbarch_from_file(bfd*) (
During symbol reading, Member function "~regcache" (offset 30802782) is virtual
but the vtable offset is not specified.
abfd=<optimized out>) at ../../binutils-gdb/gdb/arch-utils.c:618
#6 0x00000000005a80e4 in exec_file_attach(char const*, int)
(filename=0x7fffffffe6f2 "./outputs/gdb.rust/simple/simple", from_tty=1) at
../../binutils-gdb/gdb/exec.c:380
#7 0x00000000005f9d98 in
catch_command_errors_const(catch_command_errors_const_ftype*, char const*, int)
(command=0x5a7f40 <exec_file_attach(char const*, int)>, arg=0x7fffffffe6f2
"./outputs/gdb.rust/simple/simple", from_tty=1)
at ../../binutils-gdb/gdb/main.c:403
#8 0x00000000005fad5e in captured_main_1 (context=0x7fffffffe0f0) at
../../binutils-gdb/gdb/main.c:1035
#9 0x00000000005fad5e in captured_main (data=0x7fffffffe0f0) at
../../binutils-gdb/gdb/main.c:1142
#10 0x00000000005fad5e in gdb_main(captured_main_args*) (args=0x7fffffffe220)
at ../../binutils-gdb/gdb/main.c:1160
#11 0x000000000040cb75 in main(int, char**) (argc=<optimized out>,
argv=<optimized out>)
at ../../binutils-gdb/gdb/gdb.c:32
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To: gdb-prs@sourceware.org
Subject: [Bug rust/21763] gdb.lookup_type fails for rust
Date: Thu, 13 Jul 2017 21:05:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Testing a patch.
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Subject: [Bug rust/21764] sizeof(type) does not work in rust
Date: Thu, 13 Jul 2017 22:26:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This is a bug in ast->expr conversion in rust-exp.y.
I'm testing a fix.
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Subject: [Bug gdb/21769] crash in maint selftest
Date: Fri, 14 Jul 2017 14:04:00 -0000
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Fixed here: https://sourceware.org/ml/gdb-patches/2017-07/msg00166.html
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Subject: [Bug rust/21763] gdb.lookup_type fails for rust
Date: Fri, 14 Jul 2017 16:17:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=65547233e04b32e087f74f8f5e9d3ffb6fe2c198
commit 65547233e04b32e087f74f8f5e9d3ffb6fe2c198
Author: Tom Tromey <tom@tromey.com>
Date: Thu Jul 13 15:03:27 2017 -0600
Make gdb.lookup_typename work for Rust types
PR rust/21763 points out that gdb.lookup_typename does not work properly
for (some) Rust types. I tracked this down to a missing case in
symbol_matches_domain.
Tested by the buildbot.
2017-07-14 Tom Tromey <tom@tromey.com>
PR rust/21763:
* symtab.c (symbol_matches_domain): Add language_rust to special
case.
* rust-exp.y (convert_ast_to_expression) <OP_VAR_VALUE>: Don't
treat LOC_TYPEDEF symbols as variables.
2017-07-14 Tom Tromey <tom@tromey.com>
* gdb.rust/simple.exp: Add regression test for PR rust/21763.
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Subject: [Bug rust/21763] gdb.lookup_type fails for rust
Date: Fri, 14 Jul 2017 16:24:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
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--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
Fix checked in.
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Subject: [Bug rust/21764] sizeof(type) does not work in rust
Date: Fri, 14 Jul 2017 18:35:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8880f2a9cb5151ce1c2714a75d123ba0f63668ac
commit 8880f2a9cb5151ce1c2714a75d123ba0f63668ac
Author: Tom Tromey <tom@tromey.com>
Date: Fri Jul 14 08:10:39 2017 -0600
Handle sizeof(type) in Rust
PR rust/21764 notes that "sizeof" does not work correctly for all types
in Rust. The bug turns out to be an error in the conversion of the AST
to gdb expressions. This patch fixes the bug and also avoids generating
incorrect expressions in another case.
Tested on the buildbot. I'm checking this in.
2017-07-14 Tom Tromey <tom@tromey.com>
PR rust/21764:
* rust-exp.y (convert_ast_to_expression): Add "want_type"
parameter.
<UNOP_SIZEOF>: Split into separate case.
<UNOP_VAR_VALUE>: Handle want_type. Add error case.
2017-07-14 Tom Tromey <tom@tromey.com>
PR rust/21764:
* gdb.rust/simple.exp: Add tests.
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Subject: [Bug rust/21764] sizeof(type) does not work in rust
Date: Fri, 14 Jul 2017 18:36:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Fix checked in.
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Subject: [Bug cli/17095] print alignof (type or expression)
Date: Fri, 14 Jul 2017 19:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21773
Bug ID: 21773
Summary: binutils-gdb/gdb/common/vec.h:1085:31: error: ‘void*
memcpy(void*, const void*, size_t)’ copying an object
of non-trivial type ‘btrace_insn_s {aka struct
btrace_insn}’ from an array of ‘btrace_insn_s [1] {aka
struct btrace_insn [1]}’ [-Werror=class-m
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: dilyan.palauzov at aegee dot org
Target Milestone: ---
Most current gdb does not compile with most current gcc:
make[6]: Leaving directory '/home/d/binutils/gdb/build-gnulib/import'
make[5]: Leaving directory '/home/d/binutils/gdb/build-gnulib'
make[4]: Leaving directory '/home/d/binutils/gdb/build-gnulib'
make[3]: Leaving directory '/home/d/binutils/gdb'
g++ -x c++ -g -O2 -I. -I/git/binutils-gdb/gdb -I/git/binutils-gdb/gdb/common
-I/git/binutils-gdb/gdb/config -DLOCALEDIR="\"/usr/local/share/locale\""
-DHAVE_CONFIG_H -I/git/binutils-gdb/gdb/../include/opcode
-I/git/binutils-gdb/gdb/../opcodes/.. -I../bfd -I/git/binutils-gdb/gdb/../bfd
-I/git/binutils-gdb/gdb/../include -I../libdecnumber
-I/git/binutils-gdb/gdb/../libdecnumber -I/git/binutils-gdb/gdb/gnulib/import
-Ibuild-gnulib/import -I/usr/local/include/python3.5m
-I/usr/local/include/python3.5m -Wall -Wpointer-arith -Wno-unused
-Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body
-Wunused-but-set-parameter -Wunused-but-set-variable -Wno-sign-compare
-Wno-narrowing -Wno-error=maybe-uninitialized -Werror -c -o arc-tdep.o -MT
arc-tdep.o -MMD -MP -MF .deps/arc-tdep.Tpo /git/binutils-gdb/gdb/arc-tdep.c
In file included from /git/binutils-gdb/gdb/common/gdb_vecs.h:23:0,
from /git/binutils-gdb/gdb/symtab.h:24,
from /git/binutils-gdb/gdb/language.h:26,
from /git/binutils-gdb/gdb/frame.h:72,
from /git/binutils-gdb/gdb/gdbarch.h:39,
from /git/binutils-gdb/gdb/defs.h:636,
from /git/binutils-gdb/gdb/arc-tdep.c:22:
/git/binutils-gdb/gdb/btrace.h: In function ‘VEC_btrace_insn_s*
VEC_btrace_insn_s_copy(VEC_btrace_insn_s*)’:
/git/binutils-gdb/gdb/common/vec.h:1065:58: error: ‘void* memcpy(void*, const
void*, size_t)’ copying an object of non-trivial type ‘btrace_insn_s {aka
struct btrace_insn}’ from an array of ‘btrace_insn_s [1] {aka struct
btrace_insn [1]}’ [-Werror=class-memaccess]
memcpy (new_vec_->vec, vec_->vec, sizeof (T) * len_); \
^
/git/binutils-gdb/gdb/common/vec.h:461:1: note: in expansion of macro
‘DEF_VEC_ALLOC_FUNC_O’
DEF_VEC_ALLOC_FUNC_O(T) \
^~~~~~~~~~~~~~~~~~~~
/git/binutils-gdb/gdb/btrace.h:86:1: note: in expansion of macro ‘DEF_VEC_O’
DEF_VEC_O (btrace_insn_s);
^~~~~~~~~
In file included from /git/binutils-gdb/gdb/target.h:74:0,
from /git/binutils-gdb/gdb/exec.h:23,
from /git/binutils-gdb/gdb/gdbcore.h:29,
from /git/binutils-gdb/gdb/arc-tdep.c:28:
/git/binutils-gdb/gdb/btrace.h:69:8: note: ‘btrace_insn_s {aka struct
btrace_insn}’ declared here
struct btrace_insn
^~~~~~~~~~~
In file included from /git/binutils-gdb/gdb/common/gdb_vecs.h:23:0,
from /git/binutils-gdb/gdb/symtab.h:24,
from /git/binutils-gdb/gdb/language.h:26,
from /git/binutils-gdb/gdb/frame.h:72,
from /git/binutils-gdb/gdb/gdbarch.h:39,
from /git/binutils-gdb/gdb/defs.h:636,
from /git/binutils-gdb/gdb/arc-tdep.c:22:
/git/binutils-gdb/gdb/btrace.h: In function ‘VEC_btrace_insn_s*
VEC_btrace_insn_s_merge(VEC_btrace_insn_s*, VEC_btrace_insn_s*)’:
/git/binutils-gdb/gdb/common/vec.h:1083:65: error: ‘void* memcpy(void*, const
void*, size_t)’ copying an object of non-trivial type ‘btrace_insn_s {aka
struct btrace_insn}’ from an array of ‘btrace_insn_s [1] {aka struct
btrace_insn [1]}’ [-Werror=class-memaccess]
memcpy (new_vec_->vec, vec1_->vec, sizeof (T) * vec1_->num); \
^
/git/binutils-gdb/gdb/common/vec.h:461:1: note: in expansion of macro
‘DEF_VEC_ALLOC_FUNC_O’
DEF_VEC_ALLOC_FUNC_O(T) \
^~~~~~~~~~~~~~~~~~~~
/git/binutils-gdb/gdb/btrace.h:86:1: note: in expansion of macro ‘DEF_VEC_O’
DEF_VEC_O (btrace_insn_s);
^~~~~~~~~
In file included from /git/binutils-gdb/gdb/target.h:74:0,
from /git/binutils-gdb/gdb/exec.h:23,
from /git/binutils-gdb/gdb/gdbcore.h:29,
from /git/binutils-gdb/gdb/arc-tdep.c:28:
/git/binutils-gdb/gdb/btrace.h:69:8: note: ‘btrace_insn_s {aka struct
btrace_insn}’ declared here
struct btrace_insn
^~~~~~~~~~~
In file included from /git/binutils-gdb/gdb/common/gdb_vecs.h:23:0,
from /git/binutils-gdb/gdb/symtab.h:24,
from /git/binutils-gdb/gdb/language.h:26,
from /git/binutils-gdb/gdb/frame.h:72,
from /git/binutils-gdb/gdb/gdbarch.h:39,
from /git/binutils-gdb/gdb/defs.h:636,
from /git/binutils-gdb/gdb/arc-tdep.c:22:
/git/binutils-gdb/gdb/common/vec.h:1085:31: error: ‘void* memcpy(void*, const
void*, size_t)’ copying an object of non-trivial type ‘btrace_insn_s {aka
struct btrace_insn}’ from an array of ‘btrace_insn_s [1] {aka struct
btrace_insn [1]}’ [-Werror=class-memaccess]
sizeof (T) * vec2_->num); \
^
/git/binutils-gdb/gdb/common/vec.h:461:1: note: in expansion of macro
‘DEF_VEC_ALLOC_FUNC_O’
DEF_VEC_ALLOC_FUNC_O(T) \
^~~~~~~~~~~~~~~~~~~~
/git/binutils-gdb/gdb/btrace.h:86:1: note: in expansion of macro ‘DEF_VEC_O’
DEF_VEC_O (btrace_insn_s);
^~~~~~~~~
In file included from /git/binutils-gdb/gdb/target.h:74:0,
from /git/binutils-gdb/gdb/exec.h:23,
from /git/binutils-gdb/gdb/gdbcore.h:29,
from /git/binutils-gdb/gdb/arc-tdep.c:28:
/git/binutils-gdb/gdb/btrace.h:69:8: note: ‘btrace_insn_s {aka struct
btrace_insn}’ declared here
struct btrace_insn
^~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[2]: *** [Makefile:1910: arc-tdep.o] Error 1
make[2]: Leaving directory '/home/d/binutils/gdb'
make[1]: *** [Makefile:10439: all-gdb] Error 2
make[1]: Leaving directory '/home/d/binutils'
make: *** [Makefile:850: all] Error 2
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From: "zwj_xjtu at 126 dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21774] New: Ubuntu: infrun.c:5565: internal-error:
int finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Sat, 15 Jul 2017 13:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21774
Bug ID: 21774
Summary: Ubuntu: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: zwj_xjtu at 126 dot com
CC: jhb at FreeBSD dot org, jlott1 at yahoo dot com, palves at redhat dot com,
unassigned at sourceware dot org
Target Milestone: ---
I use gdb to debug a kernel module, when the code hits the breakpoints, and
i type 'c' ,then the same internel-error as follow.
+++ This bug was initially created as a clone of Bug #21497 +++
I'm using gdb7121 from FreeBSD ports. Getting this assert occasionally when
continuing from a breakpoint:
infrun.c:5565: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
I ran with some debugging on to narrow it down (set debug target 1; set debug
infrun 1; set debug fbsd-lwp 1). Unfortunately it takes a long time to
reproduce so the debug output is fairly large (30MB). Only the end is really
relevant, I think. It appears to be an interaction (race condition) between new
threads being launched and the continuing of a thread from a breakpoint.
Skipping over a lot of the verbose messages for brevity/clarity, you can see
the sequence in the last continue:
-> native->to_log_command (...)
<- native->to_log_command (0x1d7f300, c)
Continuing.
...
infrun: resuming [LWP 102181 of process 23510] for step-over
...
infrun: skipping breakpoint: stepping past insn at: 0x1df0c07
infrun: skipping breakpoint: stepping past insn at: 0x1df0c07
-> native->to_insert_breakpoint (...)
...
<- native->to_insert_breakpoint (0x1d7f300, i386:x86-64, 0x000000080a335d00) =
0
...
infrun: resume (step=1, signal=GDB_SIGNAL_0), trap_expected=1, current thread
[LWP 102181 of process 23510] at 0x1df0c07
...
FLWP: fbsd_resume for ptid (23510, 102181, 0)
So far so good, everything is setup to single-step LWP 102181. However, because
it is single stepping, it is expecting to only receive events about that
thread. However, there was already a thread-create event pending when the
breakpoint occurred. Therefore the next event that gets returned from pthread
is actually a create for a different thread.
FLWP: adding thread for LWP 101493
...
[New LWP 101493 of process 23510]
...
infrun: target_wait (-1.0.0, status) =
infrun: 23510.101493.0 [LWP 101493 of process 23510],
infrun: status->kind = spurious
...
infrun: TARGET_WAITKIND_SPURIOUS
...
infrun: Switching context from LWP 102181 of process 23510
...
to LWP 101493 of process 23510
After it processes this new thread, it will now resume all threads. This is not
good, because the "continue" code still thinks it is in single-step mode.
infrun: resume (step=0, signal=GDB_SIGNAL_0), trap_expected=0, current thread
[LWP 101493 of process 23510] at 0x80add2d20
...
FLWP: fbsd_resume for ptid (-1, 0, 0)
Because all threads are now running, another thread hits the temporary
breakpoint that was intended for the single-stepping thread.
infrun: target_wait (-1.0.0, status) =
infrun: 23510.101602.0 [LWP 101602 of process 23510],
infrun: status->kind = stopped, signal = GDB_SIGNAL_TRAP
...
infrun: TARGET_WAITKIND_STOPPED
Now it checks to see that the thread that hit the breakpoint is the correct
thread that was single-stepping. It was not, hence the assert.
infrun.c:5565: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
I hope this is clear. It seems there is a mismatch between what the "core" gdb
code expects in terms of ptrace event ordering and how the FreeBSD ptrace API
actually behaves. I'll attach the (unfiltered) end of the log to the report as
well. I can reproduce locally with our application relatively easily, but I've
not come up with a standalone test program to cause it yet.
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>From gdb-prs-return-21610-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 15 15:45:53 2017
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Subject: [Bug breakpoints/21774] Ubuntu: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Sat, 15 Jul 2017 15:45:00 -0000
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--- Comment #1 from jhb at FreeBSD dot org ---
Can you clarify what host OS you are seeing this on? The other bug is
FreeBSD-specific and should not affect debugging on Ubuntu or other Linux
systems.
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>From gdb-prs-return-21611-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 16 02:16:42 2017
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From: "zwj_xjtu at 126 dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21774] Ubuntu: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
Date: Sun, 16 Jul 2017 02:16:00 -0000
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--- Comment #2 from spring <zwj_xjtu at 126 dot com> ---
My host os is Ubuntu 16.04.1 LTS. My guest os is the same distribution, but I
clone the source code of the distribution's kernel and recomplie with `-O1`
flags, so my guest os is Ubuntu 16.04.1 LTS (GNU/Linux 4.4.13 x86_64).
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Subject: [Bug breakpoints/21774] Ubuntu: infrun.c:5565: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed
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>From gdb-prs-return-21613-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 18 21:10:28 2017
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Subject: [Bug gdb/21785] New: sysroot option does not apply to standalone
debug
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Bug ID: 21785
Summary: sysroot option does not apply to standalone debug
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>From gdb-prs-return-21614-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 18 21:19:47 2017
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Subject: [Bug gdb/21785] sysroot option does not apply to standalone debug
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--- Comment #1 from emaste at freebsd dot org ---
Background: debugging a FreeBSD/i386 core file from an application running in a
chroot on FreeBSD/amd64.
I start gdb while in the top-level directory of my chroot dir, and set the
sysroot to . and open the core file:
(gdb) set sysroot .
(gdb) core-file sh.core
[New LWP 100854]
warning: the debug information found in
"/usr/lib/debug/./lib/libedit.so.7.debug" does not match "./lib/libedit.so.7"
(CRC mismatch).
warning: the debug information found in "/usr/lib/debug/./lib/libc.so.7.debug"
does not match "./lib/libc.so.7" (CRC mismatch).
warning: the debug information found in
"/usr/lib/debug/./lib/libncursesw.so.8.debug" does not match
"./lib/libncursesw.so.8" (CRC mismatch).
warning: the debug information found in
"/usr/lib/debug/./libexec/ld-elf.so.1.debug" does not match
"./libexec/ld-elf.so.1" (CRC mismatch).
Core was generated by `sh'.
Program terminated with signal SIGABRT, Aborted.
#0 0x012589d3 in thr_kill () from ./lib/libc.so.7
The .so files have a .gnu_debuglink entry of "libedit.so.7.debug", and GDB duly
searches for this file in the standalone debug path list (from ktrace):
./lib/libedit.so.7.debug
./lib/.debug/libedit.so.7.debug
/usr/lib/debug/./lib/libedit.so.7.debug
It finds libedit.so.7.debug on the third try, but it is the system's
libedit.so.7.debug found by absolute path, not the desired sysroot one; the
sysroot should be prepended to absolute debug search paths, so that we find
./usr/lib/debug/./lib/libedit.so.7.debug
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Subject: [Bug gdb/9645] GDB needs a --sysroot command line option
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>From gdb-prs-return-21617-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 19 09:23:22 2017
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Subject: [Bug gdb/9645] GDB needs a --sysroot command line option
Date: Wed, 19 Jul 2017 09:23:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
> I think that this is the actual bug; we should have a way to run
> commands before or after loading.
Indeed, and we have "-iex" for that nowadays:
$ gdb --help
...
--eval-command=COMMAND, -ex
Execute a single GDB command.
May be used multiple times and in conjunction
with --command.
--init-eval-command=COMMAND, -iex
Like -ex but before loading inferior.
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>From gdb-prs-return-21618-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 19 11:40:08 2017
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Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ruslan from comment #0)
> To reproduce:
>
> 1. Run the following command to start debuggee and stop at entry point:
> gdb /bin/true -ex 'b *0' -ex r -ex 'd 1'
Could you show me the gdb output here? I wonder why /bin/true 's entry is on
address 0x0.
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>From gdb-prs-return-21619-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 19 13:50:12 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Wed, 19 Jul 2017 13:50:00 -0000
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--- Comment #2 from Ruslan <b7.10110111 at gmail dot com> ---
(In reply to Yao Qi from comment #1)
> Could you show me the gdb output here? I wonder why /bin/true 's entry is
> on address 0x0.
It's not on address zero. It's just a hack to make GDB stop on the first
instruction available to the inferior process — otherwise, if you don't have
debug symbols, you'll not be able to stop at the beginning of execution — be it
_start or main (to my knowledge, this is the easiest way to achieve this).
Here's how the session begins:
$ gdb -q /bin/true -ex 'b *0' -ex r -ex 'd 1' -ex 'info reg $pc'
Reading symbols from /bin/true...(no debugging symbols found)...done.
Breakpoint 1 at 0x0
Starting program: /bin/true
Warning:
Cannot insert breakpoint 1.
Cannot access memory at address 0x0
pc 0xb6fcfca0 0xb6fcfca0 <_start>
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>From gdb-prs-return-21620-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 19 16:03:56 2017
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>From gdb-prs-return-21621-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jul 20 07:10:18 2017
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Subject: [Bug remote/21798] New: Cannot alias monitor commands for gdbserver,
fails with "Invalid command to alias to: monitor exit"
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Summary: Cannot alias monitor commands for gdbserver, fails
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alias moe = monitor exit
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>From gdb-prs-return-21622-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 21 11:37:01 2017
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To: gdb-prs@sourceware.org
Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Fri, 21 Jul 2017 11:37:00 -0000
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--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ruslan from comment #2)
>
> Here's how the session begins:
>
> $ gdb -q /bin/true -ex 'b *0' -ex r -ex 'd 1' -ex 'info reg $pc'
> Reading symbols from /bin/true...(no debugging symbols found)...done.
> Breakpoint 1 at 0x0
> Starting program: /bin/true
> Warning:
> Cannot insert breakpoint 1.
> Cannot access memory at address 0x0
>
> pc 0xb6fcfca0 0xb6fcfca0 <_start>
I still can't reproduce it on armv7l panda board,
gdb -q /bin/true -ex 'b *0' -ex r -ex 'd 1'
Reading symbols from /bin/true...(no debugging symbols found)...done.
Breakpoint 1 at 0x0
Starting program: /bin/true
Warning:
Cannot insert breakpoint 1.
Cannot access memory at address 0x0
(gdb) p $fpscr
$1 = 0
My board is armv7l, having vfp and vfpv3, but your board only has vfp. I don't
have armv6l hardware.
Can you build GDB from source and debug it yourself? You can debug GDB by
setting breakpoint on arm_linux_fetch_inferior_registers and fetch_vfp_regs,
and run GDB like this,
(gdb) run -q /bin/true -ex 'b *0' -ex r -ex 'd 1'
GDB should call arm_linux_fetch_inferior_registers first, and then it should
call fetch_vfp_regs to fetch VFP registers. I suspect "<unavailable>" is
caused by that fetch_vfp_regs is not called.
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>From gdb-prs-return-21623-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 21 13:36:55 2017
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Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
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Date: Fri, 21 Jul 2017 13:36:00 -0000
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--- Comment #4 from Ruslan <b7.10110111 at gmail dot com> ---
OK, here's what happens: in arm_linux_fetch_inferior_registers the last branch
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
&& regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
fetch_vfp_regs (regcache);
has tdep->vfp_register_count==16, while regno=90 (ARM_FPSCR_REGNUM). As
ARM_D0_REGNUM==58, the call to fetch_vfp_regs(regcache) doesn't happen.
What seems to mismatch here is that VFP register count is 16, i.e. D0-D15, but
enum gdb_regnum contains values up to ARM_D31_REGNUM, thus the next value,
ARM_FPSCR_REGNUM, is not reached by the comparisons. Thus it's not surprising
that the code does work on VFPv3, where there're 32 VFP double-precision
registers.
I suppose there should be a "|| regno==ARM_FPSCR_REGNUM" or something like that
inside the if-condition.
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>From gdb-prs-return-21624-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 21 14:57:39 2017
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Subject: [Bug python/21436] frame filter should allow duplicated underlying
frames
Date: Fri, 21 Jul 2017 14:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21436
Phil Muldoon <pmuldoon at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pmuldoon at redhat dot com
--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
I've been looking at this, but I cannot produce the scenario where frames are
printed in duplicate. At first, I thought maybe something is triggering a frame
cache invalidation. I could find no evidence of that (other than the user
triggering "gdb.invalidate_cached_frames" in the frame decorators, but that
would be a self-destructive thing to do). In Fedora, we have the ability to run
gdb.Commands that release the GIL (for long running GDB commands) and I thought
maybe it could be that (some other concurrent Python code invalidating the
cache). But there's no guarantee that you are running Fedora or using that, and
the only way I could find to invalidate the cache in a concurrent call was to
call that invalidate API or switch threads. I've looked at the iterator
handling code to make sure we are doing the right thing there and it seems to
be.
I also looked at the SpiderMonkey code and whilst it was only a brief look
(it's a bit complicated for the likes of me ;)) it all seems ok.
So do you have a smaller test case?
Also, I think I'll put in a FrameDecorator.architecture() call to
FrameDecorator objects. Now that we have a Python Architecture object we can
just pass Architecture objects around and not whole frames which will make
FrameDecorator for synthetic frames easier to write. We can make the .frame()
call optional and build in backward compatibility for older frame filters on
new GDBs.
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Fri, 21 Jul 2017 14:58:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-07-21
Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #5 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ruslan from comment #4)
> OK, here's what happens: in arm_linux_fetch_inferior_registers the last
> branch
>
> else if (tdep->vfp_register_count > 0
> && regno >= ARM_D0_REGNUM
> && regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
> fetch_vfp_regs (regcache);
>
> has tdep->vfp_register_count==16, while regno=90 (ARM_FPSCR_REGNUM). As
> ARM_D0_REGNUM==58, the call to fetch_vfp_regs(regcache) doesn't happen.
>
> What seems to mismatch here is that VFP register count is 16, i.e. D0-D15,
> but enum gdb_regnum contains values up to ARM_D31_REGNUM, thus the next
> value, ARM_FPSCR_REGNUM, is not reached by the comparisons. Thus it's not
> surprising that the code does work on VFPv3, where there're 32 VFP
> double-precision registers.
>
> I suppose there should be a "|| regno==ARM_FPSCR_REGNUM" or something like
> that inside the if-condition.
Indeed, I'll fix it.
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Subject: [Bug remote/21798] Cannot alias monitor commands for gdbserver,
fails with "Invalid command to alias to: monitor exit"
Date: Fri, 21 Jul 2017 15:07:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
CC| |qiyao at gcc dot gnu.org
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
GDB only has command "monitor". "monitor exit" is not a GDB command, so you
can't create an alias to it.
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Subject: [Bug remote/21798] Cannot alias monitor commands for gdbserver,
fails with "Invalid command to alias to: monitor exit"
Date: Fri, 21 Jul 2017 15:46:00 -0000
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--- Comment #2 from Ciro Santilli <ciro.santilli at gmail dot com> ---
Ah, going crazy. I'll just use a function.
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Subject: [Bug python/21436] frame filter should allow duplicated underlying
frames
Date: Fri, 21 Jul 2017 18:58:00 -0000
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--- Comment #2 from Phil Muldoon <pmuldoon at redhat dot com> ---
For this:
"Now that we have a Python Architecture object we can just pass Architecture
objects around and not whole frames which will make FrameDecorator for
synthetic frames easier to write"
I meant
"We can just pass Architecture objects around and not whole frames in synthetic
frames which will make FrameDecorators for synthetic frames easier to write."
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Subject: [Bug cli/21814] New: Make it possible to view disassembly with raw
bytes using x/i command
Date: Fri, 21 Jul 2017 19:13:00 -0000
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Bug ID: 21814
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I know two modes of GDB disassembly:
First command be used to show instructions as well as raw byte, but it seems to
not accept number of instructions to disassemble — only memory range:
disas/r $pc,+30
Second command can disassemble exactly N instructions, like follows, but
without raw bytes:
x/10i $pc
I'd be good to have a hybrid of these two modes: make the raw bytes visible as
in disas/r and be able to specify exact number of instructions to disassemble
as in x/10i.
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Subject: [Bug remote/21798] Cannot alias monitor commands for gdbserver,
fails with "Invalid command to alias to: monitor exit"
Date: Fri, 21 Jul 2017 21:38:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
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CC| |sergiodj at redhat dot com
Resolution|--- |INVALID
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Resolving as INVALID then.
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Help!
I'm running gdb 7.12.1 under CentOS 6.8.
My application has a signal handler that invokes gdb in batch when a SEGV or
other bad signals occur. It invokes gdb with the application's process ID as
gdb --pid=<pid> --nx -x cmd.gdb --batch
This had worked fine under RH-5 and older versions of gdb.
With gdb 7.12.1, the gdb process is immediately suspended before any commands
are run.
I debugged the suspended gdb process, which shows that gdb was stopped in
set_tty_state(). This ought not to have happened, as gdb was run as a
background process and should not have tried to configure the terminal.
The output of 'where' and 'backtrace full' are below.
Is there a workaround for this problem?
(gdb) where
#0 0x0000003a78ee0048 in tcsetattr () from /lib64/libc.so.6
#1 0x00000000004491e1 in set_tty_state (scb=<optimized out>, state=<optimized
out>) at ser-unix.c:152
#2 hardwire_set_tty_state (scb=<optimized out>, ttystate=<optimized out>) at
ser-unix.c:209
#3 0x0000000000660d4b in child_terminal_inferior (self=<optimized out>) at
inflow.c:276
#4 0x000000000044e5b9 in linux_nat_terminal_inferior (self=<optimized out>) at
linux-nat.c:4462
#5 0x0000000000587f09 in target_terminal_inferior () at target.c:501
#6 0x000000000053a8aa in attach_command (args=0x26bbf70 "11882",
args@entry=0x7ffce9adc284 "11882", from_tty=from_tty@entry=0) at infcmd.c:2863
#7 0x00000000005575b8 in catch_command_errors (command=0x53a810
<attach_command(char*, int)>, arg=arg@entry=0x7ffce9adc284 "11882", from_tty=0)
at main.c:375
#8 0x000000000055818b in captured_main (data=0x7ffce9ad9db0) at main.c:1065
#9 gdb_main (args=args@entry=0x7ffce9ad9ed0) at main.c:1159
#10 0x0000000000409595 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
(gdb) backtrace full
#0 0x0000003a78ee0048 in tcsetattr () from /lib64/libc.so.6
No symbol table info available.
#1 0x00000000004491e1 in set_tty_state (scb=<optimized out>, state=<optimized
out>) at ser-unix.c:152
No locals.
#2 hardwire_set_tty_state (scb=<optimized out>, ttystate=<optimized out>) at
ser-unix.c:209
state = <optimized out>
#3 0x0000000000660d4b in child_terminal_inferior (self=<optimized out>) at
inflow.c:276
result = <optimized out>
inf = 0x27b2f20
tinfo = 0x27b7cd0
#4 0x000000000044e5b9 in linux_nat_terminal_inferior (self=<optimized out>) at
linux-nat.c:4462
No locals.
#5 0x0000000000587f09 in target_terminal_inferior () at target.c:501
ui = <optimized out>
#6 0x000000000053a8aa in attach_command (args=0x26bbf70 "11882",
args@entry=0x7ffce9adc284 "11882", from_tty=from_tty@entry=0) at infcmd.c:2863
async_exec = 0
attach_target = 0x0
inferior = 0x27b2f20
args_chain = 0x7a87e0 <sentinel_cleanup>
mode = <optimized out>
#7 0x00000000005575b8 in catch_command_errors (command=0x53a810
<attach_command(char*, int)>, arg=arg@entry=0x7ffce9adc284 "11882", from_tty=0)
at main.c:375
was_sync = 0
exception_try_scope_instance = {saved_state = 0x26bc070}
#8 0x000000000055818b in captured_main (data=0x7ffce9ad9db0) at main.c:1065
execarg = <optimized out>
cdarg = 0x0
save_auto_load = 1
argc = <optimized out>
ttyarg = 0x0
cmdarg_vec = 0x26bc790
system_gdbinit = 0x0
inhibit_home_gdbinit = 0
print_help = 0
context = 0x7ffce9ad9db0
argv = <optimized out>
local_gdbinit = 0x0
i = <optimized out>
objfile = <optimized out>
pre_stat_chain = 0x7a87e0 <sentinel_cleanup>
pid_or_core_arg = 0x0
cmdarg_p = 0x0
home_gdbinit = 0x27b7d10 "/home/jim/.gdbinit"
print_version = 0
corearg = 0x0
set_args = 0
symarg = <optimized out>
pidarg = 0x7ffce9adc284 "11882"
dirarg = 0x26bbf70
dirsize = 1
ndir = <optimized out>
quiet = 1
print_configuration = 0
#9 gdb_main (args=args@entry=0x7ffce9ad9ed0) at main.c:1159
exception_try_scope_instance = {saved_state = 0x7a87e0
<sentinel_cleanup>}
#10 0x0000000000409595 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
args = {argc = 6, argv = 0x7ffce9ad9fd8, interpreter_p = 0x755884
"console"}
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>From gdb-prs-return-21632-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 22 21:47:50 2017
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From: "jim at realintent dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/21817] gdb session suspended when run in background
Date: Sat, 22 Jul 2017 21:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21817
--- Comment #1 from Jim Foley <jim at realintent dot com> ---
I should add that the gdb process is suspended when the application is
run in background. If the application (and gdb itself) is run in foreground,
then it runs correctly.
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>From gdb-prs-return-21633-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 23 11:31:39 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/21818] New: disassemble with v5TE remote: Assertion
`info->mach == bfd_get_mach (exec_bfd)' failed.
Date: Sun, 23 Jul 2017 11:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21818
Bug ID: 21818
Summary: disassemble with v5TE remote: Assertion `info->mach ==
bfd_get_mach (exec_bfd)' failed.
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: tdep
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
Target Milestone: ---
When debugging a remote ARM binary with Tag_CPU_arch set to v5TE, attempt to
use `disassemble` command result in assertion failure.
Steps to reproduce:
* On remote machine:
gcc -x c -o test -march=armv5te -nostdlib - <<< 'int _start(){}'
gdbserver :1337 ./test
* On local machine:
arm-unknown-linux-gnueabihf-gdb -q -ex 'target remote rpi:1337' -ex disas
`rpi` above is my remote machine's hostname. Here's the output I get from
`disas`:
Dump of assembler code for function _start:
=> 0x000100b8 <+0>: push {r11} ; (str r11, [sp, #-4]!)
0x000100bc <+4>:
../../binutils-gdb/gdb/arch-utils.c:979: internal-error: int
default_print_insn(bfd_vma, disassemble_info*): Assertion `info->mach ==
bfd_get_mach (exec_bfd)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
What we have here is that `bfd_get_mach (exec_bfd)` returns
9==bfd_mach_arm_5TE, while `info->mach` has been set to 0==bfd_mach_arm_unknown
at `arm-dis.c:print_insn()` due to `info->flags` being 0.
On newer ARM arches, like 6zk, `bfd_get_mach (exec_bfd)` returns 0, and this
coincides with `info->mach`, so there's no problem.
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>From gdb-prs-return-21634-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 23 11:42:26 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21819] New: Ctrl+C leads to "terminate called after
throwing an instance of 'gdb_exception_RETURN_MASK_QUIT'"
Date: Sun, 23 Jul 2017 11:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21819
Bug ID: 21819
Summary: Ctrl+C leads to "terminate called after throwing an
instance of 'gdb_exception_RETURN_MASK_QUIT'"
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
Target Milestone: ---
Created attachment 10282
--> https://sourceware.org/bugzilla/attachment.cgi?id=10282&action=edit
Backtrace
Tested on remote Raspbian system with gdb-8.0 compiled from source and local
x86 system with gdb 8.0.50.20170709-git compiled with "--host=i686-pc-linux-gnu
--target=arm-unknown-linux-gnueabihf".
To reproduce:
* On remote machine:
gdbserver :1337 gdbserver
* On local machine: run the following command and press Ctrl+C when it's
reading symbols:
arm-unknown-linux-gnueabihf-gdb -q -ex 'target remote rpi:1337'
I get the following output:
Remote debugging using rpi:1337
Reading /home/pi/opt/gdb-8.0/bin/gdbserver from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /home/pi/opt/gdb-8.0/bin/gdbserver from remote target...
Reading symbols from target:/home/pi/opt/gdb-8.0/bin/gdbserver...^Cterminate
called after throwing an instance of 'gdb_exception_RETURN_MASK_QUIT'
Aborted (core dumped)
Attaching backtrace from the core file generated.
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>From gdb-prs-return-21635-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 24 16:08:52 2017
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From: "source-ware at trk dot nickurak.ca" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/21827] New: Regression: gdb command lookup became
case-insensitive
Date: Mon, 24 Jul 2017 16:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21827
Bug ID: 21827
Summary: Regression: gdb command lookup became case-insensitive
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: exp
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Input:
$ echo -e 'define aSDF\n print "in-func" \n end \n aSDF \n aSDF \n asdf"' | gdb
Expected behavior, as correctly observed in 7.x:
* function gets defined
* function gets called twice
$ echo -e 'define aSDF\n print "in-func" \n end \n aSDF \n aSDF \n asdf"' | gdb
GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu2.1) 7.4-2012.04
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>.
(gdb) >>(gdb) $1 = "in-func"
(gdb) $2 = "in-func"
(gdb) $3 = "in-func"
Observed behavior, incorrect under 8.x:
* function gets defined but converted to lower-case
* calling function capitalized in the same was as it was defined fails
$ echo -e 'define aSDF\n print "in-func" \n end \n aSDF \n aSDF \n asdf"' | gdb
GNU gdb (GDB) Fedora 8.0-13.fc26
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) >>(gdb) Undefined command: "aSDF". Try "help".
(gdb) Undefined command: "aSDF". Try "help".
(gdb) $1 = "in-func"
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>From gdb-prs-return-21637-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 24 18:23:50 2017
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From: "vivekrane at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21829] GDB internal error: Assertion `name[prefix_len + 1]
== ':'' failed.
Date: Mon, 24 Jul 2017 18:23:00 -0000
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Vivek <vivekrane at gmail dot com> changed:
What |Removed |Added
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CC| |vivekrane at gmail dot com
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>From gdb-prs-return-21636-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 24 18:23:29 2017
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Subject: [Bug gdb/21829] New: GDB internal error: Assertion `name[prefix_len
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https://sourceware.org/bugzilla/show_bug.cgi?id=21829
Bug ID: 21829
Summary: GDB internal error: Assertion `name[prefix_len + 1] ==
':'' failed.
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: vivekrane at gmail dot com
Target Milestone: ---
When debugging TensorFlow on UBuntu, stopped at a breakpoint, trying to call a
function that pretty prints the object, this error often shows up. Here's the
text from my console:
Thread 1 "python" hit Breakpoint 12, tensorflow::DFS(tensorflow::Graph const&,
std::function<void (tensorflow::Node*)> const&, std::function<void
(tensorflow::Node*)> const&) (g=..., enter=..., leave=...)
at tensorflow/core/graph/algorithm.cc:34
34 stack.push_back(Work{g.source_node(), false});
(gdb) p g.source_node()->DebugString()
/build/gdb-cXfXJ3/gdb-7.11.1/gdb/cp-namespace.c:252: internal-error:
cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':''
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-cXfXJ3/gdb-7.11.1/gdb/cp-namespace.c:252: internal-error:
cp_search_static_and_baseclasses: Assertion `name[prefix_len + 1] == ':''
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
Command aborted.
(gdb)
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>From gdb-prs-return-21638-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 24 19:29:23 2017
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Subject: [Bug gdb/21829] GDB internal error: Assertion `name[prefix_len + 1]
== ':'' failed.
Date: Mon, 24 Jul 2017 19:29:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
This sounds vaguely like breakpoints/18303, which was fixed by
commit 1cafadb4e4eb329dea01355c6632b3077113d80c
Date: Tue Mar 15 15:18:28 2016 -0700
I see that patch was never put into 7.11. Are you able to test with 7.12 or
8.0?
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>From gdb-prs-return-21639-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 24 20:02:30 2017
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From: "source-ware at trk dot nickurak.ca" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/21827] Regression: gdb command lookup became
case-insensitive
Date: Mon, 24 Jul 2017 20:02:00 -0000
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--- Comment #1 from Jeremy Nickurak <source-ware at trk dot nickurak.ca> ---
simark from IRC pointed out this change as the source of the regression via
bisection:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=3d7b173c29900879c9a5958dd6029fd36666e57c
As well as this this thread:
https://sourceware.org/ml/gdb-patches/2017-01/msg00157.html
A couple thoughts:
* If this backwards-incompatible change is desired, it should probably be in
the release-notes.
* If case-sensitivity is the desired behavior here, one should probably be able
to define a command with a specified case. In my example here, I've specified
some upper-case letters in the name of my definition, but it was converted to
lowercase at define-time.
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Subject: [Bug exp/21827] Regression: gdb command lookup became case-sensitive
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Jeremy Nickurak <source-ware at trk dot nickurak.ca> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Regression: gdb command |Regression: gdb command
|lookup became |lookup became
|case-insensitive |case-sensitive
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Subject: [Bug exp/21827] Regression: gdb command lookup became
case-sensitive; but definitions are forced into lowercase
Date: Mon, 24 Jul 2017 20:04:00 -0000
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Jeremy Nickurak <source-ware at trk dot nickurak.ca> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Regression: gdb command |Regression: gdb command
|lookup became |lookup became
|case-sensitive |case-sensitive; but
| |definitions are forced into
| |lowercase
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Subject: [Bug exp/21827] Regression: gdb command lookup became
case-sensitive; but definitions are forced into lowercase
Date: Mon, 24 Jul 2017 20:16:00 -0000
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--- Comment #2 from Jeremy Nickurak <source-ware at trk dot nickurak.ca> ---
Other strange things that come out of this; The following gdb snippet fails
unexpectedly:
define myFunction
print "hello"
end
document myFunction
Just a dummy test function
end
->
Type "apropos word" to search for commands related to "word".
(gdb) define myFunction
Type commands for definition of "myFunction".
End with a line saying just "end".
> print "hello"
>end
(gdb) document myFunction
Undefined command: "myFunction". Try "help".
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>From gdb-prs-return-21643-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 25 00:31:45 2017
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From: "jim at realintent dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tui/21817] gdb session suspended when run in background
Date: Tue, 25 Jul 2017 00:31:00 -0000
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--- Comment #2 from Jim Foley <jim at realintent dot com> ---
More about this:
I've fixed this in a customized gdb build with this change in inflow.c:
----
static int
gdb_has_a_terminal (void)
{
// return initial_gdb_ttystate != NULL;
return (initial_gdb_ttystate != NULL) && (batch_flag == 0);
}
----
This fix works successfully for our purposes.
I've tried to create a reproducible testcase on a 'hello world' style binary
but
didn't succeed. It must be that something in my application contributes
to the reason gdb hangs.
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>From gdb-prs-return-21644-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 25 09:07:37 2017
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Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Tue, 25 Jul 2017 09:07:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=02ad7fc29f824a9742f8386bcf5793b81ff798f5
commit 02ad7fc29f824a9742f8386bcf5793b81ff798f5
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Jul 21 16:35:23 2017 +0100
[ARM] Access FPSCR on vfpv2
GDB can fetch or store FPSCR on vfpv3, which has 32 VFP registers, but
fail to do so on vfpv2, which has 16 VFP registers. GDB code is incorrect
for vfpv2,
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
&& regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
while FPSCR register number is defined as ARM_D0_REGNUM + 32.
ARM_D0_REGNUM, /* VFP double-precision registers. */
ARM_D31_REGNUM = ARM_D0_REGNUM + 31,
ARM_FPSCR_REGNUM,
The code above uses "<=" rather than "<", in order to put FPSCR in the
range, but it is only correct when tdep->vfp_register_count is 32. On
vpfv2, it is 16, and FPSCR is out of the range, so fetch_vfp_regs or
store_vfp_regs are not called.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR tdep/21717
* arm-linux-nat.c (arm_linux_fetch_inferior_registers): Update
condition for FPSCR.
(arm_linux_store_inferior_registers): Likewise.
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To: gdb-prs@sourceware.org
Subject: [Bug exp/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Tue, 25 Jul 2017 09:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21717
--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=50e64da58e648ff8708935add5b2a87b4e590edf
commit 50e64da58e648ff8708935add5b2a87b4e590edf
Author: Yao Qi <yao.qi@linaro.org>
Date: Tue Jul 25 10:15:25 2017 +0100
[ARM] Access FPSCR on vfpv2
GDB can fetch or store FPSCR on vfpv3, which has 32 VFP registers, but
fail to do so on vfpv2, which has 16 VFP registers. GDB code is incorrect
for vfpv2,
else if (tdep->vfp_register_count > 0
&& regno >= ARM_D0_REGNUM
&& regno <= ARM_D0_REGNUM + tdep->vfp_register_count)
while FPSCR register number is defined as ARM_D0_REGNUM + 32.
ARM_D0_REGNUM, /* VFP double-precision registers. */
ARM_D31_REGNUM = ARM_D0_REGNUM + 31,
ARM_FPSCR_REGNUM,
The code above uses "<=" rather than "<", in order to put FPSCR in the
range, but it is only correct when tdep->vfp_register_count is 32. On
vpfv2, it is 16, and FPSCR is out of the range, so fetch_vfp_regs or
store_vfp_regs are not called.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR tdep/21717
* arm-linux-nat.c (arm_linux_fetch_inferior_registers): Update
condition for FPSCR.
(arm_linux_store_inferior_registers): Likewise.
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>From gdb-prs-return-21646-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 25 09:26:03 2017
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Subject: [Bug tdep/21717] "print $fpscr" says "<unavailable>" until some VFP
data register is printed
Date: Tue, 25 Jul 2017 09:26:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Component|exp |tdep
Resolution|--- |FIXED
Target Milestone|--- |8.0.1
--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
Patch is pushed to both master and 8.0 branch. Close it.
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>From gdb-prs-return-21647-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Jul 25 10:40:22 2017
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21555] "error re-setting breakpoint" on PIE
executables
Date: Tue, 25 Jul 2017 10:40:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=46a62268b87bd5e8215636b695380bca9a9f3b63
commit 46a62268b87bd5e8215636b695380bca9a9f3b63
Author: Yao Qi <yao.qi@linaro.org>
Date: Tue Jul 25 11:38:50 2017 +0100
Catch exceptions thrown from gdbarch_skip_prologue
PR 21555 is caused by the exception during the prologue analysis when
re-set
a breakpoint.
(gdb) bt
#0 memory_error_message (err=TARGET_XFER_E_IO, gdbarch=0x153db50,
memaddr=93824992233232) at ../../binutils-gdb/gdb/corefile.c:192
#1 0x00000000005718ed in memory_error (err=TARGET_XFER_E_IO,
memaddr=memaddr@entry=93824992233232) at ../../binutils-gdb/gdb/corefile.c:220
#2 0x00000000005719d6 in read_memory_object
(object=object@entry=TARGET_OBJECT_CODE_MEMORY, memaddr=93824992233232,
memaddr@entry=1, myaddr=myaddr@entry=0x7fffffffd0a0 "P\333S\001",
len=len@entry=1) at ../../binutils-gdb/gdb/corefile.c:259
#3 0x0000000000571c6e in read_code (len=1, myaddr=0x7fffffffd0a0
"P\333S\001", memaddr=<optimized out>) at ../../binutils-gdb/gdb/corefile.c:287
#4 read_code_unsigned_integer (memaddr=memaddr@entry=93824992233232,
len=len@entry=1, byte_order=byte_order@entry=BFD_ENDIAN_LITTLE)
at ../../binutils-gdb/gdb/corefile.c:362
#5 0x000000000041d4a0 in amd64_analyze_prologue
(gdbarch=gdbarch@entry=0x153db50, pc=pc@entry=93824992233232,
current_pc=current_pc@entry=18446744073709551615,
cache=cache@entry=0x7fffffffd1e0) at ../../binutils-gdb/gdb/amd64-tdep.c:2310
#6 0x000000000041e404 in amd64_skip_prologue (gdbarch=0x153db50,
start_pc=93824992233232) at ../../binutils-gdb/gdb/amd64-tdep.c:2459
#7 0x000000000067bfb0 in skip_prologue_sal (sal=sal@entry=0x7fffffffd4e0)
at ../../binutils-gdb/gdb/symtab.c:3628
#8 0x000000000067c4d8 in find_function_start_sal
(sym=sym@entry=0x1549960, funfirstline=1) at
../../binutils-gdb/gdb/symtab.c:3501
#9 0x000000000060999d in symbol_to_sal
(result=result@entry=0x7fffffffd5f0, funfirstline=<optimized out>,
sym=sym@entry=0x1549960) at ../../binutils-gdb/gdb/linespec.c:3860
....
#16 0x000000000054b733 in location_to_sals (b=b@entry=0x15792d0,
location=0x157c230, search_pspace=search_pspace@entry=0x1148120,
found=found@entry=0x7fffffffdc64) at ../../binutils-gdb/gdb/breakpoint.c:14211
#17 0x000000000054c1f5 in breakpoint_re_set_default (b=0x15792d0) at
../../binutils-gdb/gdb/breakpoint.c:14301
#18 0x00000000005412a9 in breakpoint_re_set_one
(bint=bint@entry=0x15792d0) at ../../binutils-gdb/gdb/breakpoint.c:14412
This problem can be fixed by
- either each prologue analyzer doesn't throw exception,
- or catch the exception thrown from gdbarch_skip_prologue,
I choose the latter because the former needs to fix *every* prologue
analyzer to not throw exception.
This error can be reproduced by changing reread.exp. The test reread.exp
has already test that breakpoint can be reset correctly after the
executable is re-read. This patch extends this test by compiling test c
file with and without -fPIE.
(gdb) run ^M
The program being debugged has been started already.^M
Start it from the beginning? (y or n) y^M
x86_64/gdb/testsuite/outputs/gdb.base/reread/reread' has changed;
re-reading symbols.
Error in re-setting breakpoint 1: Cannot access memory at address
0x555555554790^M
Error in re-setting breakpoint 2: Cannot access memory at address
0x555555554790^M
Starting program:
/scratch/yao/gdb/build-git/x86_64/gdb/testsuite/outputs/gdb.base/reread/reread
^M
This is foo^M
[Inferior 1 (process 27720) exited normally]^M
(gdb) FAIL: gdb.base/reread.exp: opts= "-fPIE" "ldflags=-pie" : run to
foo() second time (the program exited)
This patch doesn't re-indent the code, to keep the patch simple.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* arch-utils.c (gdbarch_skip_prologue_noexcept): New function.
* arch-utils.h (gdbarch_skip_prologue_noexcept): Declare.
* infrun.c: Include arch-utils.h
(handle_step_into_function): Call gdbarch_skip_prologue_noexcept.
(handle_step_into_function_backward): Likewise.
* symtab.c (skip_prologue_sal): Likewise.
gdb/testsuite:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* gdb.base/reread.exp: Wrap the whole test with two kinds of
compilation flags, with -fPIE and without -fPIE.
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21555] "error re-setting breakpoint" on PIE
executables
Date: Tue, 25 Jul 2017 10:55:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=cd33a03d183a268b83ccbcae07f3788308e8d9f4
commit cd33a03d183a268b83ccbcae07f3788308e8d9f4
Author: Yao Qi <yao.qi@linaro.org>
Date: Tue Jul 25 11:38:50 2017 +0100
Catch exceptions thrown from gdbarch_skip_prologue
PR 21555 is caused by the exception during the prologue analysis when
re-set
a breakpoint.
(gdb) bt
#0 memory_error_message (err=TARGET_XFER_E_IO, gdbarch=0x153db50,
memaddr=93824992233232) at ../../binutils-gdb/gdb/corefile.c:192
#1 0x00000000005718ed in memory_error (err=TARGET_XFER_E_IO,
memaddr=memaddr@entry=93824992233232) at ../../binutils-gdb/gdb/corefile.c:220
#2 0x00000000005719d6 in read_memory_object
(object=object@entry=TARGET_OBJECT_CODE_MEMORY, memaddr=93824992233232,
memaddr@entry=1, myaddr=myaddr@entry=0x7fffffffd0a0 "P\333S\001",
len=len@entry=1) at ../../binutils-gdb/gdb/corefile.c:259
#3 0x0000000000571c6e in read_code (len=1, myaddr=0x7fffffffd0a0
"P\333S\001", memaddr=<optimized out>) at ../../binutils-gdb/gdb/corefile.c:287
#4 read_code_unsigned_integer (memaddr=memaddr@entry=93824992233232,
len=len@entry=1, byte_order=byte_order@entry=BFD_ENDIAN_LITTLE)
at ../../binutils-gdb/gdb/corefile.c:362
#5 0x000000000041d4a0 in amd64_analyze_prologue
(gdbarch=gdbarch@entry=0x153db50, pc=pc@entry=93824992233232,
current_pc=current_pc@entry=18446744073709551615,
cache=cache@entry=0x7fffffffd1e0) at ../../binutils-gdb/gdb/amd64-tdep.c:2310
#6 0x000000000041e404 in amd64_skip_prologue (gdbarch=0x153db50,
start_pc=93824992233232) at ../../binutils-gdb/gdb/amd64-tdep.c:2459
#7 0x000000000067bfb0 in skip_prologue_sal (sal=sal@entry=0x7fffffffd4e0)
at ../../binutils-gdb/gdb/symtab.c:3628
#8 0x000000000067c4d8 in find_function_start_sal
(sym=sym@entry=0x1549960, funfirstline=1) at
../../binutils-gdb/gdb/symtab.c:3501
#9 0x000000000060999d in symbol_to_sal
(result=result@entry=0x7fffffffd5f0, funfirstline=<optimized out>,
sym=sym@entry=0x1549960) at ../../binutils-gdb/gdb/linespec.c:3860
....
#16 0x000000000054b733 in location_to_sals (b=b@entry=0x15792d0,
location=0x157c230, search_pspace=search_pspace@entry=0x1148120,
found=found@entry=0x7fffffffdc64) at ../../binutils-gdb/gdb/breakpoint.c:14211
#17 0x000000000054c1f5 in breakpoint_re_set_default (b=0x15792d0) at
../../binutils-gdb/gdb/breakpoint.c:14301
#18 0x00000000005412a9 in breakpoint_re_set_one
(bint=bint@entry=0x15792d0) at ../../binutils-gdb/gdb/breakpoint.c:14412
This problem can be fixed by
- either each prologue analyzer doesn't throw exception,
- or catch the exception thrown from gdbarch_skip_prologue,
I choose the latter because the former needs to fix *every* prologue
analyzer to not throw exception.
This error can be reproduced by changing reread.exp. The test reread.exp
has already test that breakpoint can be reset correctly after the
executable is re-read. This patch extends this test by compiling test c
file with and without -fPIE.
(gdb) run ^M
The program being debugged has been started already.^M
Start it from the beginning? (y or n) y^M
x86_64/gdb/testsuite/outputs/gdb.base/reread/reread' has changed;
re-reading symbols.
Error in re-setting breakpoint 1: Cannot access memory at address
0x555555554790^M
Error in re-setting breakpoint 2: Cannot access memory at address
0x555555554790^M
Starting program:
/scratch/yao/gdb/build-git/x86_64/gdb/testsuite/outputs/gdb.base/reread/reread
^M
This is foo^M
[Inferior 1 (process 27720) exited normally]^M
(gdb) FAIL: gdb.base/reread.exp: opts= "-fPIE" "ldflags=-pie" : run to
foo() second time (the program exited)
This patch doesn't re-indent the code, to keep the patch simple.
gdb:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* arch-utils.c (gdbarch_skip_prologue_noexcept): New function.
* arch-utils.h (gdbarch_skip_prologue_noexcept): Declare.
* infrun.c: Include arch-utils.h
(handle_step_into_function): Call gdbarch_skip_prologue_noexcept.
(handle_step_into_function_backward): Likewise.
* symtab.c (skip_prologue_sal): Likewise.
gdb/testsuite:
2017-07-25 Yao Qi <yao.qi@linaro.org>
PR gdb/21555
* gdb.base/reread.exp: Wrap the whole test with two kinds of
compilation flags, with -fPIE and without -fPIE.
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21555] "error re-setting breakpoint" on PIE
executables
Date: Tue, 25 Jul 2017 11:01:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.0.1
--- Comment #4 from Yao Qi <qiyao at gcc dot gnu.org> ---
Patch is pushed in to master and 8.0 branch. Close it.
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>From gdb-prs-return-21650-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 26 19:20:43 2017
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From: "jim at realintent dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21842] New: gdb configured without curses still requires
curses
Date: Wed, 26 Jul 2017 19:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21842
Bug ID: 21842
Summary: gdb configured without curses still requires curses
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jim at realintent dot com
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If I configure gdb (version 7.12.1) with either --without-curses or
--with-curses=no, the build will still look for and include the curses
header file and will still link with -lncurses.
I'll attach the config.log which shows this.
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>From gdb-prs-return-21651-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 26 19:22:14 2017
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Subject: [Bug gdb/21842] gdb configured without curses still requires curses
Date: Wed, 26 Jul 2017 19:22:00 -0000
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--- Comment #1 from Jim Foley <jim at realintent dot com> ---
Created attachment 10286
--> https://sourceware.org/bugzilla/attachment.cgi?id=10286&action=edit
config.log
config.log file showing --without-curses but including curses in the build.
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>From gdb-prs-return-21652-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Jul 26 20:46:06 2017
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Subject: [Bug gdb/21829] GDB internal error: Assertion `name[prefix_len + 1]
== ':'' failed.
Date: Wed, 26 Jul 2017 20:45:00 -0000
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Vivek <vivekrane at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Vivek <vivekrane at gmail dot com> ---
I checked with 8.0 and looks like the bug is gone. Thanks for letting me know!
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>From gdb-prs-return-21653-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jul 27 13:39:12 2017
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Subject: [Bug c++/19436] C++11 ABI tag does not work
Date: Thu, 27 Jul 2017 13:39:00 -0000
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ghjghj530-bubu at yahoo dot de changed:
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CC| |ghjghj530-bubu at yahoo dot de
--- Comment #2 from ghjghj530-bubu at yahoo dot de ---
Still a problem in GCC 6.3, GDB 7.10
-> With -D_GLIBCXX_USE_CXX11_ABI=1
(gdb) p fooVar
p fooVar
No symbol "fooVar" in current context.
(gdb) info variables
...
std::__cxx11::string fooVar[abi:cxx11];
....
(gdb) p 'fooVar[abi:cxx11]'
p 'fooVar[abi:cxx11]'
$2 = "hello world"
-> With -D_GLIBCXX_USE_CXX11_ABI=0
(gdb) p fooVar
p fooVar
$2 = "hello world"
Any chance somebody can have a look at this? thanks!
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>From gdb-prs-return-21654-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jul 27 15:20:07 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21851] New: Loading i386 binary after running x86_64 one
results in abort "arch-utils.c:524: internal-error: could not select an
architecture automatically"
Date: Thu, 27 Jul 2017 15:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21851
Bug ID: 21851
Summary: Loading i386 binary after running x86_64 one results
in abort "arch-utils.c:524: internal-error: could not
select an architecture automatically"
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
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Crash happens on GDB 7.11 as well as 8.0.50.20170727-git.
Steps to reproduce:
gcc -x c -g -o test32 -m32 - <<< 'int main(){}'
gcc -x c -g -o test64 -m64 - <<< 'int main(){}'
gdb -q -ex 'set confirm off' ./test64 -ex start -ex 'file ./test32' -ex 'set
arch auto'
Output from GDB:
Reading symbols from ./test64...done.
Temporary breakpoint 1 at 0x4004ff: file <stdin>, line 1.
Starting program: /tmp/test64
Temporary breakpoint 1, main () at <stdin>:1
1 <stdin>: No such file or directory.
warning: Selected architecture i386 is not compatible with reported target
architecture i386:x86-64
Architecture of file not recognized.
warning: Selected architecture i386 is not compatible with reported target
architecture i386:x86-64
arch-utils.c:524: internal-error: could not select an architecture
automatically
A problem internal to GDB has been detected,
further debugging may prove unreliable.
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>From gdb-prs-return-21655-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Jul 27 21:36:12 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/21852] New: Remote run without specifying a local binary
crashes GDB
Date: Thu, 27 Jul 2017 21:36:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21852
Bug ID: 21852
Summary: Remote run without specifying a local binary crashes
GDB
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
Start gdbserver:
$ ./gdbserver/gdbserver --once --multi :1234
And start gdb like this:
$ ./gdb -nx -q --data-directory=data-directory -ex "tar ext :1234" -ex "set
remote exec-file /bin/ls" -ex r
Remote debugging using :1234
Starting program:
Reading /bin/ls from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /bin/ls from remote target...
Reading symbols from target:/bin/ls...Reading
/bin/bc0fb9b3f60f72bbad3c5a1d24c9e2a1fde775.debug from remote target...
Reading /bin/.debug/bc0fb9b3f60f72bbad3c5a1d24c9e2a1fde775.debug from remote
target...
(no debugging symbols found)...done.
/home/emaisin/src/binutils-gdb/gdb/thread.c:1609: internal-error:
scoped_restore_current_thread::scoped_restore_current_thread(): Assertion `tp
!= NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
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>From gdb-prs-return-21656-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 05:34:12 2017
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Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Fri, 28 Jul 2017 05:34:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I've also stumbled upon this a while ago, but forgot to report. Anyway, I'm
interested in this.
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>From gdb-prs-return-21657-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 05:36:14 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Fri, 28 Jul 2017 05:36:00 -0000
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I've also stumbled upon this a while ago, but forgot to report. Anyway, I'm
interested in this.
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>From gdb-prs-return-21658-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 09:17:04 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21855] New: finish in a function returning a typedef to
void compiled with clang crashes GDB
Date: Fri, 28 Jul 2017 09:17:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21855
Bug ID: 21855
Summary: finish in a function returning a typedef to void
compiled with clang crashes GDB
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
Test program:
typedef void foo;
static foo
func ()
{
}
int
main ()
{
func ();
return 0;
}
Compiled with:
$ clang-3.8 test.c -o test -g3 -O0
Crashes like this:
$ ./gdb -q --data-directory=data-directory -nx test -ex "tb func" -ex r -ex fin
Reading symbols from test...done.
Temporary breakpoint 1 at 0x400504: file test.c, line 6.
Starting program: /home/emaisin/Videos/test
Temporary breakpoint 1, func () at test.c:6
6 }
Run till exit from #0 func () at test.c:6
/home/emaisin/src/binutils-gdb/gdb/infcmd.c:1610: internal-error: value*
get_return_value(value*, type*): Assertion `TYPE_CODE (value_type) !=
TYPE_CODE_VOID' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
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>From gdb-prs-return-21659-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 09:18:43 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21856] New: --data-directory doesn't expand ~
Date: Fri, 28 Jul 2017 09:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21856
Bug ID: 21856
Summary: --data-directory doesn't expand ~
Product: gdb
Version: HEAD
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I can launch GDB like this:
$ ~/build/binutils-gdb/gdb/gdb
--data-directory=$HOME/build/binutils-gdb/gdb/data-directory
but not like this
$ ~/build/binutils-gdb/gdb/gdb
--data-directory=~/build/binutils-gdb/gdb/data-directory
Warning: ~/build/binutils-gdb/gdb/data-directory: No such file or directory.
GDB should probably tilde-expand the path.
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Subject: [Bug c++/19436] C++11 ABI tag does not work
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #3 from Keith Seitz <keiths at redhat dot com> ---
There is a patch series that has been submitted by Pedro which should address
(or at least mitigate) this issue. See
https://sourceware.org/ml/gdb-patches/2017-06/msg00012.html .
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>From gdb-prs-return-21661-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 16:46:18 2017
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Subject: [Bug gdb/21829] GDB internal error: Assertion `name[prefix_len + 1]
== ':'' failed.
Date: Fri, 28 Jul 2017 16:46:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
Resolution|FIXED |DUPLICATE
--- Comment #3 from Keith Seitz <keiths at redhat dot com> ---
*** This bug has been marked as a duplicate of bug 18303 ***
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>From gdb-prs-return-21662-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Jul 28 16:46:29 2017
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Subject: [Bug breakpoints/18303] Assertation: -breakpoint-insert with windows
paths of file in non-current directory
Date: Fri, 28 Jul 2017 16:46:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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CC| |vivekrane at gmail dot com
--- Comment #9 from Keith Seitz <keiths at redhat dot com> ---
*** Bug 21829 has been marked as a duplicate of this bug. ***
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>From gdb-prs-return-21663-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 29 11:15:57 2017
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To: gdb-prs@sourceware.org
Subject: [Bug cli/16242] print format for hex float
Date: Sat, 29 Jul 2017 11:15:00 -0000
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Ruslan <b7.10110111 at gmail dot com> changed:
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>From gdb-prs-return-21664-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 29 11:24:57 2017
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Subject: [Bug cli/16242] print format for hex float
Date: Sat, 29 Jul 2017 11:24:00 -0000
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--- Comment #2 from Ruslan <b7.10110111 at gmail dot com> ---
There is /z format, which for floating-point values appears to print raw data.
The only problem is that this isn't documented. Instead, `help x` says "x(hex)"
and "z(hex, zero padded on the left)", without mentioning that the former
converts to integer while the latter prints true raw value.
I guess the fix for this would be to make the documentation correct and to add
some tests checking that the documentation matches actual behavior.
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Subject: [Bug cli/16242] print format for hex float
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Ruslan from comment #2)
> There is /z format, which for floating-point values appears to print raw
> data. The only problem is that this isn't documented. Instead, `help x` says
> "x(hex)" and "z(hex, zero padded on the left)", without mentioning that the
> former converts to integer while the latter prints true raw value.
>
> I guess the fix for this would be to make the documentation correct and to
> add some tests checking that the documentation matches actual behavior.
I think that would be good to do, but hex float is not the same as
printing the raw bits in hex.
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>From gdb-prs-return-21666-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 29 18:50:19 2017
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Subject: [Bug cli/16242] print format for hex float
Date: Sat, 29 Jul 2017 18:50:00 -0000
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--- Comment #4 from Ruslan <b7.10110111 at gmail dot com> ---
Ah, I misunderstood this bug report.
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>From gdb-prs-return-21667-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Jul 29 20:36:20 2017
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To: gdb-prs@sourceware.org
Subject: [Bug mi/16213] -var-update still keeps "var1.<error at 0>"
Date: Sat, 29 Jul 2017 20:36:00 -0000
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--- Comment #4 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Seems to be fixed with:
eclipse-cdt-9.2.1-2.fc25.x86_64
gdb-7.12.1-48.fc25.x86_64
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>From gdb-prs-return-21668-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 30 11:33:22 2017
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Subject: [Bug tdep/21865] New: MMX registers are presented in wrong order
when FSW.TOP!=0
Date: Sun, 30 Jul 2017 11:33:00 -0000
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Bug ID: 21865
Summary: MMX registers are presented in wrong order when
FSW.TOP!=0
Product: gdb
Version: 8.0
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Priority: P2
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Consider the following x86 assembly program (compiled by FASM):
format ELF executable
fldpi
fldl2t
fldl2e
fldln2
fldlg2
int3
movd eax, mm0
movd ecx, mm1
movd edx, mm2
movd ebx, mm3
xor ebx, ebx
mov eax, 1
int 0x80
Running it with
gdb -q ./test -ex r -ex 'p/x
{$mm0.v2_int32[0],$mm1.v2_int32[0],$mm2.v2_int32[0],$mm3.v2_int32[0]}' -ex 'si
4' -ex 'p/x {$eax,$ecx,$edx,$ebx}' -ex 'p/x
{$mm0.v2_int32[0],$mm1.v2_int32[0],$mm2.v2_int32[0],$mm3.v2_int32[0]}'
gives us:
Program received signal SIGTRAP, Trace/breakpoint trap.
0x0804805f in ?? ()
$1 = {0xcd1b8afe, 0x2168c235, 0x0, 0x0}
0x0804806b in ?? ()
$2 = {0x0, 0x0, 0x0, 0xfbcff799}
$3 = {0x0, 0x0, 0x0, 0xfbcff799}
The $1 result is wrong, since MMn registers are actually mapped to Rn FPU
registers, while GDB seems to somehow think of the mapping being dependent on
STn or something. If I set $fstat=0 (so that TOP=0), then the order of MMn
register values on subsequent printing is correct.
The result $3 is right, but it is only due to the access to MM0 by MOVD
instruction, which clears TOP field in $fstat.
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>From gdb-prs-return-21669-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 30 14:56:08 2017
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From: "benno.fuenfstueck at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21866] New: Stepi does not make progress with memory error
Date: Sun, 30 Jul 2017 14:56:00 -0000
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Bug ID: 21866
Summary: Stepi does not make progress with memory error
Product: gdb
Version: 8.0.1
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Priority: P2
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Reporter: benno.fuenfstueck at gmail dot com
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On certain programs, GDB's `stepi` command does not work anymore (neither do
`break` or any of the examine commands). Only `continue` works in this
situation):
0x080485ee in main ()
(gdb) display/i $pc
1: x/i $pc
=> 0x80485ee <main+51>: mov DWORD PTR ds:0x804a020,0x2
(gdb) si
Cannot access memory at address 0xdeadbeeb
(gdb) si
Cannot access memory at address 0xdeadbeeb
(gdb) bt
Python Exception <class 'gdb.MemoryError'> Cannot access memory at address
0xdeadbeeb:
#0 0x080485ee in main ()
Cannot access memory at address 0xdeadbeeb
(gdb) p/x $pc
$1 = 0x80485ee
(gdb) si
Cannot access memory at address 0xdeadbeeb
(gdb) p/x $pc
$2 = 0x80485ee
(gdb)
Program to reproduce:
https://gist.github.com/bennofs/84b5007fe807d59bbadc13c0b6ae2849
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Subject: [Bug gdb/21866] Stepi does not make progress with memory error
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--- Comment #1 from Benno Fünfstück <benno.fuenfstueck at gmail dot com> ---
Created attachment 10293
--> https://sourceware.org/bugzilla/attachment.cgi?id=10293&action=edit
Example program to reproduce
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>From gdb-prs-return-21671-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 30 15:02:12 2017
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Subject: [Bug gdb/21866] Stepi does not make progress with memory error
Date: Sun, 30 Jul 2017 15:02:00 -0000
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--- Comment #2 from Benno Fünfstück <benno.fuenfstueck at gmail dot com> ---
Note that the bug is not specific to the `int 3` instruction, I just inserted
that to make reproducing simpler (you can manually set a breakpoint and
reproduce it with other instructions as well)
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>From gdb-prs-return-21672-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Jul 30 22:37:07 2017
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Subject: [Bug backtrace/16577] GDB crash on attempted read from deleted
shared library
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Scott French <scott at mathworks dot com> changed:
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--- Comment #2 from Scott French <scott at mathworks dot com> ---
This is still happening as of gdb 8.0.
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>From gdb-prs-return-21673-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 07:59:14 2017
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Subject: [Bug python/21436] frame filter should allow duplicated underlying
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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>From gdb-prs-return-21674-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 15:21:44 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21870] New: aarc64: Leftover uncleared debug
registers
Date: Mon, 31 Jul 2017 15:21:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21870
Bug ID: 21870
Summary: aarc64: Leftover uncleared debug registers
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: jan.kratochvil at redhat dot com
Target Milestone: ---
Created attachment 10295
--> https://sourceware.org/bugzilla/attachment.cgi?id=10295&action=edit
.c standalone testcase
Testcase verifies if the debug registers are cleared after it is run.
Standalone execution is OK but being spawned from GDB reports an error:
# ./gdb ~/aarch64-watchpoint
GNU gdb (GDB) 8.0.50.20170731-git
(gdb) run
Starting program: /root/aarch64-watchpoint
aarch64-watchpoint: aarch64-watchpoint.c:91: set_watchpoint: Assertion
`(((dreg_state.dbg_regs[0].ctrl) >> 5) & 0xff) == 0' failed.
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Subject: [Bug breakpoints/21870] aarc64: Leftover uncleared debug registers
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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CC| |jan.kratochvil at redhat dot com,
| |qiyao at gcc dot gnu.org
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>From gdb-prs-return-21676-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 15:23:02 2017
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Subject: [Bug breakpoints/21870] aarch64: Leftover uncleared debug registers
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-linux
Host| |aarch64-linux
Summary|aarc64: Leftover uncleared |aarch64: Leftover uncleared
|debug registers |debug registers
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>From gdb-prs-return-21677-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 20:03:58 2017
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] New: GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Mon, 31 Jul 2017 20:03:00 -0000
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Bug ID: 21873
Summary: GDB Crashes when ^C pressed while debugging ARM-Cortex
M4F
Product: gdb
Version: 7.4
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
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Created attachment 10297
--> https://sourceware.org/bugzilla/attachment.cgi?id=10297&action=edit
Core file that has crash info
I am debugging my firmware on MAX32630FTHR target using openocd server. While
running the firmware, i hit the Ctrl+C keystore to be stop the firmware and
enable command line in TUI mode. It crashes suddenly after the key pressing. I
am running it on Ubuntu 16.04.
The target links are here.
https://www.maximintegrated.com/en/products/digital/microcontrollers/MAX32630FTHR.html
https://developer.mbed.org/platforms/MAX32630FTHR/
My gdbinit content are here.
define connect
set trace-commands on
set remotetimeout 1000000000
set logging on
target remote localhost:3333
end
define reset
monitor reset halt
c
end
define settings
# set unlimited string size while print
set print elements 0
end
define program
monitor reset halt
load build/output.elf
monitor reset halt
end
define run_openocd
target remote | openocd scripts/jtag/max3263x_hdk.cfg -c "gdb_port
pipe; log_output ./openocd.log"
end
connect
settings
program
c
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>From gdb-prs-return-21678-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 20:04:29 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
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Ismail <ihkose at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |ihkose at gmail dot com
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>From gdb-prs-return-21679-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 20:06:43 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
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--- Comment #1 from Ismail <ihkose at gmail dot com> ---
Here is the arm-none-eabi-gdb -version command output.
GNU gdb (GNU Tools for ARM Embedded Processors) 7.4.1.20130913-cvs
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
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What |Removed |Added
----------------------------------------------------------------------------
Host| |Ubuntu 16.04
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--- Comment #2 from Ismail <ihkose at gmail dot com> ---
Here is the arm-none-eabi-gdb -version command output.
GNU gdb (GNU Tools for ARM Embedded Processors) 7.4.1.20130913-cvs
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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>From gdb-prs-return-21682-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 20:08:09 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
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>From gdb-prs-return-21683-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Jul 31 21:17:26 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Mon, 31 Jul 2017 21:17:00 -0000
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--- Comment #3 from Ismail <ihkose at gmail dot com> ---
5154 segmentation fault (core dumped) arm-none-eabi-gdb -tui
./build/output.elf -x scripts/gdb/max32630.gdb
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>From gdb-prs-return-21684-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 09:25:42 2017
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Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
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--- Comment #2 from Lech Swirski <leszek at swirski dot co.uk> ---
Thanks Raphael, I've now started the "proper" patch submission process:
https://sourceware.org/ml/gdb-patches/2017-08/msg00003.html
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>From gdb-prs-return-21685-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 14:46:49 2017
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Subject: [Bug mi/21875] New: GDB/MI shouldn't print repeating values as
<repeats 16 times>
Date: Tue, 01 Aug 2017 14:46:00 -0000
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Bug ID: 21875
Summary: GDB/MI shouldn't print repeating values as <repeats 16
times>
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Tested with GDB 8.0.50.20170801-git on x86_64 Linux system. Test command:
cat << EOF | gdb -i=mi
-file-exec-and-symbols /bin/true
-break-insert *0
-exec-run
-data-list-register-values r 40
EOF
The -data-list-register-values command prints SSE register as
^done,register-values=[{number="40",value="{v4_float = {0x00000000, 0x00000000,
0x00000000, 0x00000000}, v2_double = {0x0000000000000000, 0x0000000000000000},
v16_int8 = {0x00 <repeats 16 times>}, v8_int16 = {0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000}, v4_int32 = {0x00000000, 0x00000000,
0x00000000, 0x00000000}, v2_int64 = {0x0000000000000000, 0x0000000000000000},
uint128 = 0x00000000000000000000000000000000}"}]
Notice the "v16_int8 = {0x00 <repeats 16 times>}". This is not really
machine-friendly. All repetitions should be explicitly spelled out.
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>From gdb-prs-return-21686-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 14:46:59 2017
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Subject: [Bug tdep/21818] disassemble with v5TE remote: Assertion `info->mach
== bfd_get_mach (exec_bfd)' failed.
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
I'll take a look.
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>From gdb-prs-return-21687-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 14:55:50 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Tue, 01 Aug 2017 14:55:00 -0000
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--- Comment #4 from Yao Qi <qiyao at gcc dot gnu.org> ---
GDB 7.4.1 is too old. Could you please try GDB 8.0, and build it from source?
If the crash is still there, use your host gdb to debug arm-none-eabi gdb, and
show the stack backtrace of crash. That will be very helpful to triage the
issue.
$ mkdir build-gdb
$ cd build-gdb
$ ../binutils-gdb/configure --target=arm-none-eabi --disable-binutils
--disable-ld --disable-gold --disable-gprof
$ make
then you can use ./gdb/gdb.
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>From gdb-prs-return-21688-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 18:20:29 2017
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Subject: [Bug c++/20020] GDB segfault on printing objects
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Subject: [Bug c++/20607] gdb printing google's protobuf object will crash
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Guillaume Morin <guillaume at morinfr dot org> changed:
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>From gdb-prs-return-21690-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 19:32:58 2017
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From: "ihkose at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Tue, 01 Aug 2017 19:32:00 -0000
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--- Comment #5 from Ismail <ihkose at gmail dot com> ---
I downloaded gdb from the following read only repository and configure it with
your parameters and then built it. GDB 8
git clone git://sourceware.org/git/binutils-gdb.git
Here is the GDB version output
$ gdb/gdb --version
GNU gdb (GDB) 8.0.50.20170801-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-pc-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
I dont know if generated bin files has issues. I use the following gcc compiler
version. I sometimes see dwarf errors. But, the firmware itself works well.
arm-none-eabi-gcc (GNU Tools for ARM Embedded Processors) 4.7.4 20130913
(release) [ARM/embedded-4_7-branch revision 202601]
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
I am not sure how to debug the gdb itself. It seems little bit complicated. I
have to use openocd in order to run and debug the program on the target.
I will have one GDB as runner and debugger, the second one that works in TUI
mode will connect to openocd and debug the firmware.
I would be happy if you can give me some documents/guidance to debug it.
Thanks
Ismail
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Tue, 01 Aug 2017 21:25:00 -0000
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--- Comment #6 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ismail from comment #5)
>
> I am not sure how to debug the gdb itself. It seems little bit complicated.
> I have to use openocd in order to run and debug the program on the target.
>
> I will have one GDB as runner and debugger, the second one that works in TUI
> mode will connect to openocd and debug the firmware.
>
> I would be happy if you can give me some documents/guidance to debug it.
Use the built GDB as usual. Start it in TUI mode, and connect to OpenOCD.
Start a new terminal, check the pid of the arm-none-eabi-gdb, like,
$ ps -elf | grep gdb
then start your host GDB (shipped in your distro) to attach the
arm-none-eabi-gdb, like
$ gdb -p PID
(gdb) continue
and then go back the first terminal (using arm-none-eabi-gdb in TUI mode).
Continue use it to reproduce the crash. If it crashes, the host GDB will catch
the SIGSEGV signal, and you can show the stack backtrace of crash, and examine
why it crashes.
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>From gdb-prs-return-21692-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 01 21:49:24 2017
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Tue, 01 Aug 2017 21:49:00 -0000
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--- Comment #7 from Ismail <ihkose at gmail dot com> ---
I did that works to start debugging the GDB. But, the only problem is when I
attach the GDB that will be debugged does not responses to anything including
Ctrl+C keystrokes. The other debugger GDB gets stop. In order to continue, i
need to go to the other terminal and continue. That's weird.
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>From gdb-prs-return-21693-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 07:32:14 2017
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Subject: [Bug cli/21044] Text or color mark on current line in code listing
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Ciro Santilli <ciro.santilli at gmail dot com> changed:
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CC| |ciro.santilli at gmail dot com
--- Comment #3 from Ciro Santilli <ciro.santilli at gmail dot com> ---
I really want this, especially with a full line color highlight like TUI.
TUI breaks when you have large stdout, and with vim bindings.
I'm currently using GDB dashboard just for this feature basically:
https://github.com/cyrus-and/gdb-dashboard
The problem is that requires Python scripting, which is not available on some
targets.
If the highlight were possible natively, I would just put a list on hook-stop,
and everything would be perfect.
Another advantage over TUI is that the shell history keeps the debug path if
you want to scroll up.
Then just use the "edit" command as well to make things even better.
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>From gdb-prs-return-21694-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 07:44:37 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Wed, 02 Aug 2017 07:44:00 -0000
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--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ismail from comment #7)
> I did that works to start debugging the GDB. But, the only problem is when I
> attach the GDB that will be debugged does not responses to anything
> including Ctrl+C keystrokes. The other debugger GDB gets stop. In order to
> continue, i need to go to the other terminal and continue. That's weird.
Maybe it is easier to get coredump. If you don't debug arm-none-eabi-gdb, does
it still crash? If it does, you can get the coredump, and then, start your
host gdb like this,
$ gdb ./gdb ./core
and gdb command "bt" can tell us why gdb is crashed.
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>From gdb-prs-return-21695-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 09:46:20 2017
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From: "skimo-bugzilla2 at kotnet dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/20603] gdb fails to properly restart a rust test
executable
Date: Wed, 02 Aug 2017 09:46:00 -0000
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Sven Verdoolaege <skimo-bugzilla2 at kotnet dot org> changed:
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--- Comment #2 from Sven Verdoolaege <skimo-bugzilla2 at kotnet dot org> ---
I can reliably reproduce a very similar problem on Ubuntu 17.04,
although it does not seem to be related to rust.
In particular, as shown below, gdb fails to restart properly
after recompiling the program that is being debugged:
$ cat test.c
int main()
{
return 0;
}
$ gcc -g -o test test.c
$ gdb ./test
GNU gdb (GDB) 8.0
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
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Reading symbols from ./test...done.
(gdb) b main
Breakpoint 1 at 0x664: file test.c, line 3.
(gdb) r
Starting program: /tmp/test
Breakpoint 1, main () at test.c:3
3 return 0;
(gdb) shell
$ gcc -g -o test test.c
$ exit
exit
(gdb) r
The program being debugged has been started already.
Start it from the beginning? (y or n) y
`/tmp/test' has changed; re-reading symbols.
Error in re-setting breakpoint 1: Cannot access memory at address
0x555555554660
Starting program: /tmp/test
warning: Probes-based dynamic linker interface failed.
Reverting to original interface.
[Inferior 1 (process 27665) exited normally]
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Subject: [Bug gdb/20603] gdb fails to properly restart a rust test executable
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Component|rust |gdb
Resolution|WORKSFORME |---
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Sven asked me to reopen this given that he has a reproducer.
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From: "macro@linux-mips.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21886] New: Compressed MIPS code debugging
impossible due to memory breakpoint misplacement
Date: Wed, 02 Aug 2017 17:44:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21886
Bug ID: 21886
Summary: Compressed MIPS code debugging impossible due to
memory breakpoint misplacement
Product: gdb
Version: HEAD
Status: NEW
Severity: critical
Priority: P1
Component: breakpoints
Assignee: macro@linux-mips.org
Reporter: macro@linux-mips.org
Target Milestone: 8.0.1
Target: mips*-*-*
As from commit cd6c3b4ffc4e ("New gdbarch methods breakpoint_kind_from_pc
and sw_breakpoint_from_kind") it is not possible to debug compressed MIPS
code due to the ISA bit being retained in the memory breakpoint location.
Consequently the software breakpoint instruction is patched in starting
from the second byte of the intended original instruction and therefore
corrupts code being debugged. This usually renders debugging impossible,
e.g. with MIPS16 code and the Linux target any dynamic executable
crashes:
(gdb) continue
Continuing.
Program received signal SIGBUS, Bus error.
_dl_debug_initialize (ldbase=0, ns=0) at dl-debug.c:51
51 r = &_r_debug;
(gdb)
See <https://sourceware.org/ml/gdb-patches/2017-08/msg00011.html> for a
proposed fix.
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Subject: [Bug breakpoints/21886] Compressed MIPS code debugging impossible
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Date: Wed, 02 Aug 2017 17:44:00 -0000
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Maciej W. Rozycki <macro@linux-mips.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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From: "guillaume at morinfr dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/20020] GDB segfault on printing objects
Date: Wed, 02 Aug 2017 18:25:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20020
--- Comment #2 from Guillaume Morin <guillaume at morinfr dot org> ---
We have started experiencing a similar crash when we switched to g++ 7.1 with
c++17 semantics. When gdb tries to print a "static constexpr", it triggers a
"error reading variable: Missing ELF symbol" exception and then crashes at the
same place as the original reporter. This seems to happen with every release at
least from gdb 7.11. I also built the git master and could reproduce the
problem as well.
It's not entirely clear that this is the same exact bug but the crash backtrace
is completely similar
I have a simple reproducer:
$ cat main.cpp
struct A {
static constexpr const char *a = "a";
void foo() { }
};
int main(void) {
A a;
a.foo();
}
Compile with g++ 7.1 with C++17 semantics: g++-7 -std=c++17 -g -o main main.cpp
Now run it with gdb:
$ gdb main
GNU gdb (Debian 7.11.1-2~bpo8+1) 7.11.1
(...)
(gdb) b A::foo
Breakpoint 1 at 0x40055e: file main.cpp, line 6.
(gdb) r
Starting program: main
Breakpoint 1, A::foo (this=0x7fffffffe09f) at main.cpp:6
6 void foo() { }
(gdb) print *this
Segmentation fault (core dumped)
If I patch the source with the workaround mentioned by Thilo (i.e set the ptr
to NULL in the catch block and call cp_print_static_field() only if v is not
NULL), it does not crash:
(gdb) print *this
$1 = {static a = <error reading variable: Missing ELF symbol "A::a".>}
If I compile the program above with the default c++ semantics(c++ 14), I get
(gdb) print *this
$1 = {static a = <optimized out>}
With the current git master (8.0.50.20170801-git), this is the backtrace I get
for the gdb crash:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 value_entirely_covered_by_range_vector (value=0x0, ranges=0x90) at
value.c:401
401 if (value->lazy)
(gdb) bt
#0 value_entirely_covered_by_range_vector (value=0x0, ranges=0x90) at
value.c:401
#1 0x0000000000563282 in cp_print_static_field (options=<optimized out>,
recurse=<optimized out>, stream=<optimized out>, val=<optimized out>,
type=<optimized out>) at cp-valprint.c:640
#2 cp_print_value_fields (type=0x0, real_type=0x90, real_type@entry=0xf1cd00,
offset=offset@entry=0, address=0, address@entry=140737488347295,
stream=0xf194c0, recurse=16998736, recurse@entry=0, val=0xf8fc00,
options=0x7fffffffda20, dont_print_vb=0x0, dont_print_statmem=0)
at cp-valprint.c:335
#3 0x00000000005639ca in cp_print_value_fields_rtti (type=<optimized out>,
type@entry=0xf1cd00, valaddr=0xf6a330 "", offset=offset@entry=0,
address=140737488347295, stream=0xf194c0, recurse=0, val=0xf8fc00,
options=0x7fffffffda20, dont_print_vb=0x0, dont_print_statmem=0)
at cp-valprint.c:456
#4 0x000000000054bf52 in c_val_print_struct (type=0xf1cd00, valaddr=<optimized
out>, embedded_offset=0, address=<optimized out>, stream=<optimized out>,
recurse=<optimized out>, original_value=0xf8fc00, options=0x7fffffffda20) at
c-valprint.c:412
#5 0x000000000054c46f in c_val_print (type=0xf1cd00, embedded_offset=0,
address=0, stream=0xf194c0, recurse=0, original_value=0xf8fc00,
options=0x7fffffffda20) at c-valprint.c:530
#6 0x0000000000699270 in val_print (type=0x0, type@entry=0xf1cd00,
embedded_offset=0, address=15846656, address@entry=140737488347295,
stream=stream@entry=0xf194c0, recurse=32767, recurse@entry=0,
val=val@entry=0xf8fc00, options=0x7fffffffdae0, language=0x843b80
<cplus_language_defn>)
at valprint.c:1109
#7 0x000000000054cc1f in c_value_print (val=0xf8fc00, stream=0xf194c0,
options=<optimized out>) at c-valprint.c:702
#8 0x0000000000622218 in print_value (val=val@entry=0xf8fc00,
fmtp=fmtp@entry=0x7fffffffdbf0) at ./printcmd.c:1179
#9 0x00000000006222ae in print_command_1 (exp=0xd3e366 "*this", voidprint=1)
at ./printcmd.c:1207
#10 0x00000000004999e9 in cmd_func (cmd=<optimized out>, args=<optimized out>,
from_tty=<optimized out>) at cli/cli-decode.c:1902
#11 0x0000000000684ce6 in execute_command (p=<optimized out>, p@entry=0xd3e360
"print *this", from_tty=1) at top.c:675
#12 0x00000000005ab7dc in command_handler (command=0xd3e360 "print *this") at
event-top.c:590
#13 0x00000000005abad8 in command_line_handler (rl=<optimized out>) at
event-top.c:780
#14 0x00000000005aae2c in gdb_rl_callback_handler (rl=0xf6a330 "") at
event-top.c:213
#15 0x00000000006c6698 in rl_callback_read_char () at callback.c:220
#16 0x00000000005aad6e in gdb_rl_callback_read_char_wrapper_noexcept () at
event-top.c:175
#17 0x00000000005aadd9 in gdb_rl_callback_read_char_wrapper
(client_data=<optimized out>) at event-top.c:192
#18 0x00000000005ab300 in stdin_event_handler (error=<optimized out>,
client_data=0xd3ebc0) at event-top.c:518
#19 0x00000000005aa215 in gdb_wait_for_event (block=block@entry=1) at
event-loop.c:859
#20 0x00000000005aa3d3 in gdb_do_one_event () at event-loop.c:347
#21 0x00000000005aa485 in start_event_loop () at event-loop.c:371
#22 0x00000000005ff408 in captured_command_loop (data=data@entry=0x0) at
main.c:325
#23 0x00000000005ac3c3 in catch_errors (func=func@entry=0x5ff3e0
<captured_command_loop(void*)>, func_args=func_args@entry=0x0,
errstring=errstring@entry=0x7f0ede "", mask=mask@entry=RETURN_MASK_ALL) at
exceptions.c:236
#24 0x0000000000600366 in captured_main (data=0x7fffffffdec0) at main.c:1150
#25 gdb_main (args=args@entry=0x7fffffffdff0) at main.c:1160
#26 0x0000000000411ae5 in main (argc=<optimized out>, argv=<optimized out>) at
gdb.c:32
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/20020] GDB segfault on printing objects
Date: Wed, 02 Aug 2017 19:55:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |keiths at redhat dot com
--- Comment #3 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Thilo Voertler from comment #1)
> Any comment would be appreciated
Thank you for chasing this down. I have investigated this a little, and I see
this hunk from commit 492d29ea is probably the culprit:
@@ -313,18 +313,21 @@ cp_print_value_fields (struct type *type, struct type
*rea
l_type,
}
else if (field_is_static (&TYPE_FIELD (type, i)))
{
- volatile struct gdb_exception ex;
struct value *v = NULL;
- TRY_CATCH (ex, RETURN_MASK_ERROR)
+ TRY
{
v = value_static_field (type, i);
}
- if (ex.reason < 0)
- fprintf_filtered (stream,
- _("<error reading variable: %s>"),
- ex.message);
+ CATCH (ex, RETURN_MASK_ERROR)
+ {
+ fprintf_filtered (stream,
+ _("<error reading variable: %s>"),
+ ex.message);
+ }
+ END_CATCH
+
cp_print_static_field (TYPE_FIELD_TYPE (type, i),
v, stream, recurse + 1,
options);
Your patch should fix that. Would you care to submit your (properly formatted)
patch (and ChangeLog) to gdb-patches@sourceware.org?
(In reply to Guillaume Morin from comment #2)
> We have started experiencing a similar crash when we switched to g++ 7.1
> with c++17 semantics. When gdb tries to print a "static constexpr", it
> triggers a "error reading variable: Missing ELF symbol" exception and then
> crashes at the same place as the original reporter. This seems to happen
> with every release at least from gdb 7.11. I also built the git master and
> could reproduce the problem as well.
This appears consistent with this bug, thank you for reporting.
> I have a simple reproducer:
>
Awesome! Thank you very much for this!
> Now run it with gdb:
I tried your test case (using gcc 7.0-20160916 (experimental) -- the gdb c++
compile branch) and did not reproduce the crash. I will try building something
newer. Can you give me the exact compiler version you are using? [g++ -v]
> If I compile the program above with the default c++ semantics(c++ 14), I get
> (gdb) print *this
> $1 = {static a = <optimized out>}
>
That appears to be another issue (which I have also investigated). I'm going to
open a new bug about this, c++/21892. Let's move the "optimized out" discussion
there.
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21892] New: value of constexpr variable is "<optimized
out>" (no optimization)
Date: Wed, 02 Aug 2017 19:55:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21892
Bug ID: 21892
Summary: value of constexpr variable is "<optimized out>" (no
optimization)
Product: gdb
Version: unknown
Status: NEW
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: keiths at redhat dot com
Target Milestone: ---
Reported originally in c++/20020
----- snip -----
$ cat main.cpp
struct A {
static constexpr const char *a = "a";
void foo() { }
};
int main(void) {
A a;
a.foo();
}
Compile with g++ 7.1 with C++17 semantics: g++-7 -std=c++17 -g -o main main.cpp
Now run it with gdb:
$ gdb main
GNU gdb (Debian 7.11.1-2~bpo8+1) 7.11.1
(...)
(gdb) b A::foo
Breakpoint 1 at 0x40055e: file main.cpp, line 6.
(gdb) r
Starting program: main
Breakpoint 1, A::foo (this=0x7fffffffe09f) at main.cpp:6
6 void foo() { }
(gdb) print *this
$1 = {static a = <optimized out>}
----- end -----
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Subject: [Bug c++/20020] GDB segfault on printing objects
Date: Wed, 02 Aug 2017 20:18:00 -0000
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--- Comment #4 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Keith Seitz from comment #3)
> (In reply to Thilo Voertler from comment #1)
> > Any comment would be appreciated
>
> Thank you for chasing this down. I have investigated this a little, and I
> see this hunk from commit 492d29ea is probably the culprit:
Actually to be pedantic, that's not the problem. The NULL check was already
missing by the time that patch was applied. It *does* appear in commit
ee86786c, so something between the two erased it.
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>From gdb-prs-return-21703-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 21:20:20 2017
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Subject: [Bug rust/21893] New: template_argument(0) gives syntax error
Date: Wed, 02 Aug 2017 21:20:00 -0000
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Bug ID: 21893
Summary: template_argument(0) gives syntax error
Product: gdb
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Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
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Given the following program:
use std::collections::HashMap;
fn main() {
let m : HashMap<u32, Vec<u32>> = HashMap::new();
println!("Hello, world! {:?}", m);
}
print(gdb.parse_and_eval("m")["table"].type.template_argument(0))
gives a:
RuntimeError: syntax error, near `>>'
Error while executing Python code.
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>From gdb-prs-return-21704-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 21:20:36 2017
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Subject: [Bug rust/21893] template_argument(0) gives syntax error
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Jeff Muizelaar <jrmuizel at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at sourceware dot org
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Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Wed, 02 Aug 2017 22:34:00 -0000
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--- Comment #9 from Ismail <ihkose at gmail dot com> ---
Here is the backtrace output. Hopefully, It may be helpful to locate the bug.
Thanks
(gdb) bt
#0 strlen () at ../sysdeps/x86_64/strlen.S:106
#1 0x000000000061222b in find_and_open_source (filename=0x20c <error: Cannot
access memory at address 0x20c>, dirname=0x303078302829745f <error: Cannot
access memory at address 0x303078302829745f>,
fullname=fullname@entry=0x2912d28) at ../../binutils-gdb/gdb/source.c:1098
#2 0x000000000061235c in symtab_to_fullname (s=0x2912cf0) at
../../binutils-gdb/gdb/source.c:1167
#3 0x0000000000477b44 in tui_update_breakpoint_info (win=win@entry=0x2539a90,
current_only=current_only@entry=0) at
../../binutils-gdb/gdb/tui/tui-winsource.c:461
#4 0x000000000047816b in tui_update_source_window_as_is (win_info=0x2539a90,
gdbarch=gdbarch@entry=0x271f920, s=s@entry=0x25cf840, line_or_addr=...,
noerror=noerror@entry=0)
at ../../binutils-gdb/gdb/tui/tui-winsource.c:107
#5 0x0000000000474147 in tui_show_symtab_source
(gdbarch=gdbarch@entry=0x271f920, s=s@entry=0x25cf840, line=...,
noerror=noerror@entry=0) at ../../binutils-gdb/gdb/tui/tui-source.c:328
#6 0x0000000000477f63 in tui_update_source_windows_with_addr
(gdbarch=0x271f920, addr=79676) at
../../binutils-gdb/gdb/tui/tui-winsource.c:156
#7 0x000000000047801a in tui_display_main () at
../../binutils-gdb/gdb/tui/tui-winsource.c:56
#8 0x00000000005dd80d in generic_observer_notify (args=0x7ffd6a7b4270,
subject=<optimized out>) at ../../binutils-gdb/gdb/observer.c:167
#9 observer_notify_new_objfile (objfile=objfile@entry=0x0) at
./observer.inc:582
#10 0x0000000000621d1e in clear_symtab_users (add_flags=...,
add_flags@entry=...) at ../../binutils-gdb/gdb/symfile.c:2957
#11 0x0000000000624807 in reread_symbols () at
../../binutils-gdb/gdb/symfile.c:2694
#12 0x0000000000624a02 in load_command (arg=0x0, from_tty=1) at
../../binutils-gdb/gdb/symfile.c:1835
#13 0x00000000004589f9 in cmd_func (cmd=<optimized out>, args=<optimized out>,
from_tty=<optimized out>) at ../../binutils-gdb/gdb/cli/cli-decode.c:1902
#14 0x0000000000650c70 in execute_command (p=<optimized out>, p@entry=0x2539730
"", from_tty=1) at ../../binutils-gdb/gdb/top.c:675
#15 0x000000000057247c in command_handler (command=0x2539730 "") at
../../binutils-gdb/gdb/event-top.c:590
#16 0x0000000000572798 in command_line_handler (rl=<optimized out>) at
../../binutils-gdb/gdb/event-top.c:780
#17 0x0000000000571a2c in gdb_rl_callback_handler (rl=0x254be30 "") at
../../binutils-gdb/gdb/event-top.c:213
#18 0x00000000006d06e3 in rl_callback_read_char () at
../../binutils-gdb/readline/callback.c:220
#19 0x000000000057195e in gdb_rl_callback_read_char_wrapper_noexcept () at
../../binutils-gdb/gdb/event-top.c:175
#20 0x00000000005719d9 in gdb_rl_callback_read_char_wrapper
(client_data=<optimized out>) at ../../binutils-gdb/gdb/event-top.c:192
#21 0x0000000000571f60 in stdin_event_handler (error=<optimized out>,
client_data=0x2340df0) at ../../binutils-gdb/gdb/event-top.c:518
#22 0x0000000000570d5d in gdb_wait_for_event (block=block@entry=1) at
../../binutils-gdb/gdb/event-loop.c:859
#23 0x0000000000570eb2 in gdb_do_one_event () at
../../binutils-gdb/gdb/event-loop.c:347
#24 0x000000000057100e in gdb_do_one_event () at
../../binutils-gdb/gdb/event-loop.c:304
#25 start_event_loop () at ../../binutils-gdb/gdb/event-loop.c:371
#26 0x00000000005c8038 in captured_command_loop (data=data@entry=0x0) at
../../binutils-gdb/gdb/main.c:325
#27 0x00000000005730e3 in catch_errors (func=func@entry=0x5c8010
<captured_command_loop(void*)>, func_args=func_args@entry=0x0,
errstring=errstring@entry=0x80c1b0 "", mask=mask@entry=RETURN_MASK_ALL)
at ../../binutils-gdb/gdb/exceptions.c:236
#28 0x00000000005c8ef6 in captured_main (data=0x7ffd6a7b47b0) at
../../binutils-gdb/gdb/main.c:1150
#29 gdb_main (args=args@entry=0x7ffd6a7b48f0) at
../../binutils-gdb/gdb/main.c:1160
#30 0x000000000040e015 in main (argc=<optimized out>, argv=<optimized out>) at
../../binutils-gdb/gdb/gdb.c:32
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>From gdb-prs-return-21706-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 02 22:40:18 2017
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Wed, 02 Aug 2017 22:40:00 -0000
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--- Comment #10 from Ismail <ihkose at gmail dot com> ---
│1030
│
│1031 int
│
│1032 find_and_open_source (const char *filename,
│
│1033 const char *dirname,
│
│1034 char **fullname)
│
│1035 {
│
.............
┌──../../binutils-gdb/gdb/source.c──────────────────────────────────────────────────────
│1052 xfree (*fullname);
│1053 *fullname = rewritten_fullname;
│1054 }
│1055
│1056 result = gdb_open_cloexec (*fullname, OPEN_MODE, 0);
│1057 if (result >= 0)
│1058 {
│1059 char *lpath = gdb_realpath (*fullname);
│1060
│1061 xfree (*fullname);
│1062 *fullname = lpath;
│1063 return result;
│1064 }
│1065
│1066 /* Didn't work -- free old one, try again. */
│1067 xfree (*fullname);
│1068 *fullname = NULL;
│1069 }
│1070
│1071 cleanup = make_cleanup (null_cleanup, NULL);
│1072
│1073 if (dirname != NULL)
│1074 {
│1075 /* If necessary, rewrite the compilation directory name
according
│1076 to the source path substitution rules specified by the
user. */
│1077
│1078 char *rewritten_dirname = rewrite_source_path (dirname);
│1079
│1080 if (rewritten_dirname != NULL)
│1081 {
│1082 make_cleanup (xfree, rewritten_dirname);
│1083 dirname = rewritten_dirname;
│1084 }
│1085
│1086 /* Replace a path entry of $cdir with the compilation
directory
│1087 name. */
│1088 #define cdir_len 5
│1089 /* We cast strstr's result in case an ANSIhole has made it
const,
│1090 which produces a "required warning" when assigned to a
nonconst. */
│1091 p = (char *) strstr (source_path, "$cdir");
│1092 if (p && (p == path || p[-1] == DIRNAME_SEPARATOR)
│1093 && (p[cdir_len] == DIRNAME_SEPARATOR || p[cdir_len] ==
'\0'))
│1094 {
│1095 int len;
│1096
│1097 path = (char *)
>│1098 alloca (strlen (source_path) + 1 + strlen (dirname) +
1); /*CRASHES HERE */
│1099 len = p - source_path;
│1100 strncpy (path, source_path, len); /* Before $cdir */
│1101 strcpy (path + len, dirname); /* new stuff */
│1102 strcat (path + len, source_path + len + cdir_len); /*
After
│1103
$cdir */
│1104 }
│1105 }
└───────────────────────────────────────────────────────────────────────────────────────
multi-thre Thread 0x7f03cf6957 In: find_and_open_source
#20 0x00000000005719d9 in gdb_rl_callback_read_char_wrapper (client_
#21 0x0000000000571f60 in stdin_event_handler (error=<optimized out>
#22 0x0000000000570d5d in gdb_wait_for_event (block=block@entry=1) a
#23 0x0000000000570eb2 in gdb_do_one_event () at ../../binutils-gdb/
#24 0x000000000057100e in gdb_do_one_event () at ../../binutils-gdb/
#25 start_event_loop () at ../../binutils-gdb/gdb/event-loop.c:371
#26 0x00000000005c8038 in captured_command_loop (data=data@entry=0x0
#27 0x00000000005730e3 in catch_errors (func=func@entry=0x5c8010 <ca
at ../../binutils-gdb/gdb/exceptions.c:236
#28 0x00000000005c8ef6 in captured_main (data=0x7ffd6a7b47b0) at ../
---Type <return> to continue, or q <return> to quit---
#29 gdb_main (args=args@entry=0x7ffd6a7b48f0) at ../../binutils-gdb/
#30 0x000000000040e015 in main (argc=<optimized out>, argv=<optimize
(gdb) up
#1 0x000000000061222b in find_and_open_source (filename=0x20c <erro
fullname=fullname@entry=0x2912d28) at ../../binutils-gdb/gdb/sou
(gdb) p source_path
$1 = 0x23c36e0 "$cdir:$cwd"
(gdb) p dirname
$2 = 0x303078302829745f <error: Cannot access memory at address 0x30
(gdb)
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Wed, 02 Aug 2017 22:49:00 -0000
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--- Comment #11 from Ismail <ihkose at gmail dot com> ---
Let me try to debug the issue. Perhaps I may figure out the issue and send a
patch.
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From: "guillaume at morinfr dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/20020] GDB segfault on printing objects
Date: Wed, 02 Aug 2017 23:00:00 -0000
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--- Comment #5 from Guillaume Morin <guillaume at morinfr dot org> ---
(In reply to Keith Seitz from comment #3)
> I tried your test case (using gcc 7.0-20160916 (experimental) -- the gdb c++
> compile branch) and did not reproduce the crash. I will try building
> something newer. Can you give me the exact compiler version you are using?
This is Debian's gcc 7.1.0-10 (from testing)
Using built-in specs.
COLLECT_GCC=g++-7
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 7.1.0-10'
--with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs
--enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr
--with-gcc-major-version-only --program-suffix=-7
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie
--with-system-zlib --with-target-system-zlib --enable-objc-gc=auto
--enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none --without-cuda-driver
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 7.1.0 (Debian 7.1.0-10)
I tested in a Debian testing chroot and reproduced it without any issues. So I
believe it should be easy for you to reproduce with a similar version
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Subject: [Bug c++/21892] value of constexpr variable is "<optimized out>" (no
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Date: Wed, 02 Aug 2017 23:03:00 -0000
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--- Comment #1 from Guillaume Morin <guillaume at morinfr dot org> ---
Just a note: I get *optimized out* with c++14 (the default), not c++17
So you want to compile with "g++-7 -g -o main main.cpp" to reproduce this bug.
If you add -std=c++17, you're reproducing the segfault in c++/20020
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/21893] template_argument(0) gives syntax error
Date: Wed, 02 Aug 2017 23:34:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This happens because rustc doesn't emit DW_AT_template_type_param for
the HashMap type.
Then it interacts with a weird gdb/python thing -- in earlier times gcc
also did not emit this template information, so the first iteration of
this python layer code hacked around the omission by parsing the C++
name and extracting the type names. This code remains, so it still tries
to do this as a fallback.
I think this is apropos: https://github.com/rust-lang/rust/issues/9224
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Subject: [Bug python/13326] Need support for C++ method call for a gdb.Value
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--- Comment #1 from vuvova at gmail dot com ---
Same for TYPE_CODE_INTERNAL_FUNCTION:
(gdb) pi a=gdb.parse_and_eval('$_streq')
(gdb) pi print a.type.code == gdb.TYPE_CODE_INTERNAL_FUNCTION
True
(gdb) pi a("1","2")
Python Exception <type 'exceptions.RuntimeError'> Value is not callable (not
TYPE_CODE_FUNC).:
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>From gdb-prs-return-21712-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Aug 03 14:27:01 2017
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Subject: [Bug c++/21892] value of constexpr variable is "<optimized out>" (no
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--- Comment #2 from Guillaume Morin <guillaume at morinfr dot org> ---
To be 100% clear with the c++/20020 segfault fixed and c++17, you get "{static
a = <error reading variable: Missing ELF symbol "A::a".>}"
With c++14, you get "{static a = <optimized out>}"
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>From gdb-prs-return-21713-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Aug 03 19:44:29 2017
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Subject: [Bug c++/20020] GDB segfault on printing objects
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--- Comment #6 from Guillaume Morin <guillaume at morinfr dot org> ---
Note: https://sourceware.org/bugzilla/show_bug.cgi?id=20607 is probably the
same bug
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Subject: [Bug python/21436] frame filter should allow duplicated underlying
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
> So do you have a smaller test case?
Nope, I'm afraid not.
I will see if I can make a dummy one.
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
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Last reconfirmed| |2017-08-03
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This does look like the correct fix.
I suggest following the gdb contribution instructions to send the patch in.
The instructions are in the source tree.
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>From gdb-prs-return-21716-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 04 00:47:28 2017
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Subject: [Bug rust/21893] template_argument(0) gives syntax error
Date: Fri, 04 Aug 2017 00:47:00 -0000
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--- Comment #2 from Jeff Muizelaar <jrmuizel at gmail dot com> ---
https://github.com/rust-lang/rust/issues/9224 seems to suggest that rustc is
emitting DW_AT_template_type_param
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>From gdb-prs-return-21717-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 04 18:43:31 2017
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug remote/21906] New: "nexti" command behaves as "stepi" when
remote debugging
Date: Fri, 04 Aug 2017 18:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21906
Bug ID: 21906
Summary: "nexti" command behaves as "stepi" when remote
debugging
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
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This reproduces with i386 and x86_64 hosts and i386 as well as ARM remote
targets.
Here's a sample session with i386 host and remote with GDB 8.0.50.20170804-git:
gdb -q -ex 'target remote eeepc:9999' -ex 'x/3i $pc' -ex ni -ex ni
Remote debugging using eeepc:9999
warning: while parsing target description (at line 24): Missing end value
warning: Could not load XML target description; ignoring
Reading /bin/true from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /bin/true from remote target...
Reading symbols from target:/bin/true...Reading /bin/.debug/true from remote
target...
(no debugging symbols found)...done.
Reading /lib/ld-linux.so.2 from remote target...
Reading /lib/ld-linux.so.2 from remote target...
Reading symbols from target:/lib/ld-linux.so.2...Reading /lib/ld-2.19.so from
remote target...
Reading /lib/.debug/ld-2.19.so from remote target...
(no debugging symbols found)...done.
0xb7fdf0d0 in ?? () from target:/lib/ld-linux.so.2
=> 0xb7fdf0d0: mov eax,esp
0xb7fdf0d2: call 0xb7fe2790
0xb7fdf0d7: mov edi,eax
0xb7fdf0d2 in ?? () from target:/lib/ld-linux.so.2
0xb7fe2790 in ?? () from target:/lib/ld-linux.so.2
Note that the call to 0xb7fe2790 has been entered as if the last command was
"stepi" instead of "ni". Instead, the last line of output should have had
0xb7fdf0d7 as address, not 0xb7fe2790.
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>From gdb-prs-return-21718-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 04 21:31:57 2017
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Subject: [Bug tdep/21907] New: Dn/Qn registers are printed wrongly by "info
reg" on a system with NEON support
Date: Fri, 04 Aug 2017 21:31:00 -0000
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Bug ID: 21907
Summary: Dn/Qn registers are printed wrongly by "info reg" on a
system with NEON support
Product: gdb
Version: 8.0
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Tested on remotely-debugged program on Lenovo A328. To reproduce, run this
command:
arm-unknown-linux-gnueabihf-gdb -q -ex 'target remote 192.168.0.235:9999' -ex
'p $d0' -ex 'info reg d0'
Then it outputs:
$1 = {
u8 = {49, 105, 110, 47, 116, 114, 117, 101},
u16 = {26929, 12142, 29300, 25973},
u32 = {795765041, 1702195828},
u64 = 7310875413443406129,
f32 = {2.16833454e-10, 7.24431922e+22},
f64 = 5.5621884095669346e+180
}
d0 {
u8 = {0x31, 0x69, 0x6e, 0x2f, 0x74, 0x72, 0x75, 0x65},
u16 = {0x6931, 0x2f6e, 0x7274, 0x6575},
u32 = {0x2f6e6931, 0x65757274},
u64 = 0x657572742f6e6931,
f32 = {0x0, 0x0},
f64 = 0x8000000000000000
}
Notice how the first case ("p" command) is OK, while the second (info reg)
gives wrong values for f32 and f64. Looks like they are first converted to
integers, and then printed in hex format. They should at the very least not be
converted, and additionally maybe printed in natural format as well as raw.
Similar pattern is with $q0-$q15 registers.
Data from /proc/cpuinfo:
Processor : ARMv7 Processor rev 3 (v7l)
Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpv4
idiva idivt
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>From gdb-prs-return-21719-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Aug 05 21:49:23 2017
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Subject: [Bug rust/21893] template_argument(0) gives syntax error
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--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Jeff Muizelaar from comment #2)
> https://github.com/rust-lang/rust/issues/9224 seems to suggest that rustc is
> emitting DW_AT_template_type_param
Not always. Consider this test (from that bug):
pub struct Generic<T: Clone>(T);
pub struct Normal(i32);
fn main () {
let generic = Generic(10);
let normal = Normal(10);
generic;
normal;
}
Here the DWARF for Generic<i32> is just:
<2><81>: Abbrev Number: 6 (DW_TAG_structure_type)
<82> DW_AT_name : (indirect string, offset: 0x6e): Generic<i32>
<86> DW_AT_byte_size : 4
<87> Unknown AT value: 88: 4
<3><88>: Abbrev Number: 7 (DW_TAG_member)
<89> DW_AT_name : (indirect string, offset: 0x66): __0
<8d> DW_AT_type : <0xa8>
<91> Unknown AT value: 88: 4
<92> DW_AT_data_member_location: 0
<3><93>: Abbrev Number: 0
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>From gdb-prs-return-21720-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Aug 05 22:01:34 2017
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Subject: [Bug rust/21185] add i128 and u128 support to rust
Date: Sat, 05 Aug 2017 22:01:00 -0000
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--- Comment #12 from Tom Tromey <tromey at sourceware dot org> ---
Printing got fixed in bug 16225, but I think I want to leave this one
open to implement arithmetic.
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>From gdb-prs-return-21721-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 07 07:54:44 2017
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From: "pmuldoon at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21755] No "step" event
Date: Mon, 07 Aug 2017 07:54:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-07
CC| |pmuldoon at redhat dot com
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Severity|normal |enhancement
--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
Inferior control is not yet implemented in GDB Python unfortunately.
Hopefully, that will change in the future.
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>From gdb-prs-return-21722-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 07 10:35:14 2017
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Subject: [Bug python/13326] Need support for C++ method call for a gdb.Value
object from within python
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--- Comment #2 from Phil Muldoon <pmuldoon at redhat dot com> ---
I looked at the code and, indeed, class method invocation is barred. I suspect
the reason for this is two-fold. Currently, in GDB we evaluate all the hairy
C++ stuff in the evaluation parser. The Python inferior function call stuff
just calls "call_function_by_hand". This causes, firstly, the separation from
the "this" reference which is passed as a parameter to the function. If you
remove the restriction in the code, GDB will complain about an incorrect number
of arguments because the hidden "this" argument is missing. Secondly, all of
the extra "shaping" for the function call is missing like overload resolution.
So feature missing confirmed. I'm not sure when it will be worked on as it is a
non-trivial issue. Perhaps when the C++ification progresses to the evaluation
parser it might be possible without duplicating large amounts of code.
There is a workaround available. You can use gdb.parse_and_eval to get the
value by using it to call the function in question. This uses the evaluation
parser and correctly sets up for the C++ function call. So something like:
python f = gdb.parse_and_eval("someObject.someFunction()")
This will call that function and return the value back to GDB as a Python
value.
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From: "pmuldoon at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21755] No "step" event
Date: Mon, 07 Aug 2017 10:49:00 -0000
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--- Comment #2 from Phil Muldoon <pmuldoon at redhat dot com> ---
Oops I do apologize, this was about stepping events, not actual stepping. We do
have both "stop" and "continue" events. There is indeed no concrete step event.
But I suspect a step would just emit a "continue" then "stop" event anyway?
https://www.sourceware.org/gdb/onlinedocs/gdb.html#Events-In-Python
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From: "leszek at swirski dot co.uk" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
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Lech Swirski <leszek at swirski dot co.uk> changed:
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--- Comment #3 from Lech Swirski <leszek at swirski dot co.uk> ---
Fix merged in
http://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=16eb6b2db49e6cf2fdca56efd37689fcc170cd37
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>From gdb-prs-return-21725-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 07 16:03:28 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21886] Compressed MIPS code debugging impossible
due to memory breakpoint misplacement
Date: Mon, 07 Aug 2017 16:03:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Maciej W. Rozycki <macro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ba7b109b296feac8cf8cab74db5f824dfa631610
commit ba7b109b296feac8cf8cab74db5f824dfa631610
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Mon Aug 7 17:02:04 2017 +0100
PR breakpoints/21886: mem-break: Fix breakpoint insertion location
Fix a commit cd6c3b4ffc4e ("New gdbarch methods breakpoint_kind_from_pc
and sw_breakpoint_from_kind") regression and restore the use of
`->placed_address' rather than `->reqstd_address' as the location for a
memory breakpoint to be inserted at. Previously
`gdbarch_breakpoint_from_pc' was used that made that adjustment in
`default_memory_insert_breakpoint' from the preinitialized value,
however with the said commit that call is gone, so the passed
`->placed_address' has to be used for the initialization.
The regression manifests itself as the inability to debug any MIPS/Linux
compressed ISA dynamic executable as GDB corrupts the dynamic loader
with one of its implicit breakpoints, causing the program to crash, as
seen for example with the `mips-linux-gnu' target, o32 ABI, MIPS16 code,
and the gdb.base/advance.exp test case:
(gdb) continue
Continuing.
Program received signal SIGBUS, Bus error.
_dl_debug_initialize (ldbase=0, ns=0) at dl-debug.c:51
51 r = &_r_debug;
(gdb) FAIL: gdb.base/advance.exp: Can't run to main
gdb/
PR breakpoints/21886
* mem-break.c (default_memory_insert_breakpoint): Use
`->placed_address' rather than `->reqstd_address' for the
breakpoint location.
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From: "pmuldoon at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21436] frame filter should allow duplicated underlying
frames
Date: Mon, 07 Aug 2017 16:07:00 -0000
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--- Comment #4 from Phil Muldoon <pmuldoon at redhat dot com> ---
Created attachment 10323
--> https://sourceware.org/bugzilla/attachment.cgi?id=10323&action=edit
Dummy frame testcase
I hope this helps. This was my rough/scratch testcase for setting up
nested/multiple nested/assumed dummy frames.
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>From gdb-prs-return-21727-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 08 00:07:25 2017
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From: "chrisj at rtems dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 08 Aug 2017 00:07:00 -0000
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--- Comment #2 from Chris Johns <chrisj at rtems dot org> ---
This issue also happens on Windows when building on MSYS2:
../sim/ppc/libsim.a(sim_calls.o): In function `sim_io_read_stdin':
D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:302:
undefined reference to `error'
../sim/ppc/libsim.a(sim_calls.o): In function `sim_io_write_stdout':
D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:320:
undefined reference to `error'
../sim/ppc/libsim.a(sim_calls.o): In function `sim_io_write_stderr':
D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:339:
undefined reference to `error'
../sim/ppc/libsim.a(sim_calls.o): In function `sim_io_printf_filtered':
D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:358:
undefined reference to `error'
../sim/ppc/libsim.a(sim_calls.o): In function `sim_load':
D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:105:
undefined reference to `error'
../sim/ppc/libsim.a(sim_calls.o):D:\opt\rtems\rsb.git\rtems\build\prg7xwm1\build\sim\ppc/../../../gdb-7.12/sim/ppc/sim_calls.c:125:
more undefined references to `error' follow
Also tracked in RTEMS under https://devel.rtems.org/ticket/2990#comment:13
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Subject: [Bug python/21558] symtab.fullname() can't handle directories with
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--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
Do you have a test case (file name I can create) that triggers this error?
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Subject: [Bug python/21366] Python script causes GDB core dump
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--- Comment #4 from Phil Muldoon <pmuldoon at redhat dot com> ---
Can you submit the patch, following the posting guidelines, to the gdb-patches@
list?
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Subject: [Bug python/20624] gdb.Value doesn't support Python floordiv
operator, //
Date: Tue, 08 Aug 2017 09:53:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #6 from Phil Muldoon <pmuldoon at redhat dot com> ---
What's the status of your patch, Jonathan? Have you submitted it to
gdb-patches@?
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From: "pmuldoon at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/21007] Expose breaking with regular expressions on the
Python API
Date: Tue, 08 Aug 2017 09:54:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
I'll add it to the todo on my list. Thanks.
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Subject: [Bug python/18439] lazy string value method ignores length
Date: Tue, 08 Aug 2017 09:56:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #2 from Phil Muldoon <pmuldoon at redhat dot com> ---
Can I close this bug, Doug?
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Subject: [Bug python/17728] gdb.LazyString is confused by typedefs
Date: Tue, 08 Aug 2017 09:57:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #3 from Phil Muldoon <pmuldoon at redhat dot com> ---
Can we close this bug, Doug?
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Subject: [Bug python/21196] Build is broken with Python < 2.7
Date: Tue, 08 Aug 2017 10:04:00 -0000
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #1 from Phil Muldoon <pmuldoon at redhat dot com> ---
I've brought the issue up with the community on gdb@sourceware.org
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Subject: [Bug python/21196] Build is broken with Python < 2.7
Date: Tue, 08 Aug 2017 12:23:00 -0000
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--- Comment #2 from Phil Muldoon <pmuldoon at redhat dot com> ---
The consensus is that 2.6 now builds cleanly. If you encounter further issues,
please reopen the bug and we'll look at it again.
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Subject: [Bug python/21196] Build is broken with Python < 2.7
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Phil Muldoon <pmuldoon at redhat dot com> changed:
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--- Comment #3 from Phil Muldoon <pmuldoon at redhat dot com> ---
Closed.
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From: "jwakely.gcc at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/20624] gdb.Value doesn't support Python floordiv
operator, //
Date: Tue, 08 Aug 2017 12:26:00 -0000
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--- Comment #7 from Jonathan Wakely <jwakely.gcc at gmail dot com> ---
I don't think I ever addressed all the comments in the
https://sourceware.org/ml/gdb-patches/2016-09/msg00220.html thread.
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From: "hap.ddup at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21925] New: [onlinedocs] Error syntax: show set
startup-with-shell
Date: Tue, 08 Aug 2017 12:59:00 -0000
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Bug ID: 21925
Summary: [onlinedocs] Error syntax: show set startup-with-shell
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Target Milestone: ---
Please fix the following command syntax:
Error:
(gdb) show set startup-with-shell
Undefined show command: "set startup-with-shell". Try "help show".
Success:
(gdb) show startup-with-shell
Use of shell to start subprocesses is on.
--------
Error Location:
1. https://sourceware.org/gdb/current/onlinedocs/gdb/Starting.html#Starting
2. http://sourceware.org/gdb/current/onlinedocs/gdb.pdf.gz
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From: "joel.sherrill at oarcorp dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 08 Aug 2017 14:55:00 -0000
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--- Comment #3 from Joel Sherrill <joel.sherrill at oarcorp dot com> ---
A patch was proposed in this thread
https://sourceware.org/ml/gdb-patches/2016-11/msg00760.html by John Baldwin.
Any chance of reaching a conclusion on it so psim builds on FreeBSD?
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>From gdb-prs-return-21740-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 08 16:59:57 2017
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From: "dje at google dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug python/18439] lazy string value method ignores length
Date: Tue, 08 Aug 2017 16:59:00 -0000
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dje at google dot com changed:
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--- Comment #3 from dje at google dot com ---
(In reply to Phil Muldoon from comment #2)
> Can I close this bug, Doug?
Indeed.
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>From gdb-prs-return-21741-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 08 20:46:12 2017
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From: "dominik.b.czarnota+bugzilla at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21927] New: Searching memory on remote target fails
Date: Tue, 08 Aug 2017 20:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21927
Bug ID: 21927
Summary: Searching memory on remote target fails
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dominik.b.czarnota+bugzilla at gmail dot com
Target Milestone: ---
Hey,
There is a bug when searching memory on remote targets.
At least that is what happened for me on some x86-64 binaries.
My setup can be seen at the end of the post.
You can see the bug on this asciinema cast which connects to remote target
hosted as `gdbserver localhost:4444 /bin/ls`:
https://asciinema.org/a/o4ZCjQ7MRwyIKDx6uZHCcQCU9
This can be reproduced using a super simple hello world binary:
```
#include <stdio.h>
int main() {
puts("Hello world");
}
```
That is compiled as `gcc main.c` (gcc version and file properties below).
Then starting a gdbserver as `gdbserver localhost:4444 ./a.out` and then in
another console:
```
$ gdb ./a.out -q
Reading symbols from ./a.out...(no debugging symbols found)...done.
(gdb) target remote localhost:4444
Remote debugging using localhost:4444
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading symbols from target:/lib64/ld-linux-x86-64.so.2...(no debugging symbols
found)...done.
0x00007feb9f0adcc0 in _start () from target:/lib64/ld-linux-x86-64.so.2
(gdb) b main
Breakpoint 1 at 0x10000067e
(gdb) c
Continuing.
Reading /usr/lib/libc.so.6 from remote target...
Breakpoint 1, 0x000000010000067e in main ()
(gdb) x/4i $rip
=> 0x10000067e <main+4>: lea 0x9f(%rip),%rdi # 0x100000724
0x100000685 <main+11>: callq 0x100000550 <puts@plt>
0x10000068a <main+16>: mov $0x0,%eax
0x10000068f <main+21>: pop %rbp
(gdb) ni
0x0000000100000685 in main ()
(gdb) i r rdi
rdi 0x100000724 4294969124
(gdb) x/s 0x100000724
0x100000724: "Hello world"
(gdb) find 0x100000700, +0x50, "Hello"
Pattern not found.
(gdb) find 0x100000700, +200, "ello"
Pattern not found.
(gdb)
(gdb) py import gdb; print(gdb.selected_inferior().search_memory(0x100000700,
500, "Hello"))
4294969124
(gdb) p/x 4294969124
$1 = 0x100000724
(gdb) find 0x100000700, +500, "Hello"
Pattern not found.
```
As you can see, the pattern is not found with `find` command and it really *is
there*.
On the other hand it was found by Python API - which is weird to me because I
started digging over this bug due to `gdb.selected_inferior().search_memory`
not being able to find my address.
Here is another asciicinema - for /bin/ls - showing that the Python's
`.search_memory` can show something weird as well:
https://asciinema.org/a/yAiyeTuagKL4r8CQ7FkMA4xJ5
As it returned an address which is unacessible.
Below you can see my gdb version.
```
$ gdb --version
GNU gdb (GDB) 8.0
// (...)
$ gdbserver --version
GNU gdbserver (GDB) 8.0
// (...)
$ gdb
(gdb) py import sys; print(sys.version)
3.6.2 (default, Jul 20 2017, 03:52:27)
[GCC 7.1.1 20170630]
$ gdb --configuration
This GDB was configured as follows:
configure --host=x86_64-pc-linux-gnu --target=x86_64-pc-linux-gnu
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/share/gdb (relocatable)
--with-jit-reader-dir=/usr/lib/gdb (relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/usr (relocatable)
--with-guile
--with-separate-debug-dir=/usr/lib/debug (relocatable)
--with-system-gdbinit=/etc/gdb/gdbinit
--without-babeltrace
("Relocatable" means the directory can be moved with the GDB installation
tree, and GDB will still find it.)
```
My gcc version:
```
$ gcc --version
gcc (GCC) 7.1.1 20170630
// (...)
```
The result `a.out` file properties:
```
$ file a.out
a.out: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically
linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32,
BuildID[sha1]=6401e4473f83c5f4d6d5bffa691a69119ae86977, not stripped
$ checksec -f a.out
RELRO STACK CANARY NX PIE RPATH
RUNPATH FORTIFY Fortified Fortifiable FILE
Partial RELRO No canary found NX enabled PIE enabled No RPATH No
RUNPATH No 0 0 a.out
```
Thanks,
Disconnect3d
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>From gdb-prs-return-21742-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 08 21:18:35 2017
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Subject: [Bug gdb/21927] Searching memory on remote target fails
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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>From gdb-prs-return-21743-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 09 08:18:18 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21873] GDB Crashes when ^C pressed while debugging
ARM-Cortex M4F
Date: Wed, 09 Aug 2017 08:18:00 -0000
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--- Comment #12 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Ismail from comment #11)
> Let me try to debug the issue. Perhaps I may figure out the issue and send a
> patch.
dirname points to a garbage address. valgrind or address sanitizer is good at
finding such problems, you can either
1) run arm-none-eabi-gdb with valgrind, like 'valgrind ./gdb/gdb',
2) or rebuild gdb with address sanitizer, $ make CXXFLAGS="-O0 -g3
-fsanitize=address" gdb
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>From gdb-prs-return-21744-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 09 16:14:16 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/13590] always display addresses in "info var" output
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
> (gdb) p &foo.c::foo <<< is there a syntax for that?
> A syntax error in expression, near `::foo'.
yes there is, it's:
(gdb) p 'foo.c'::foo
$1 = 0
"watch 'foo.c'::foo", "disassemble 'foo.c'::function" etc. works too.
Basically, everywhere gdb accepts an expression.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/13590] always display addresses in "info var" output
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
For reference:
https://sourceware.org/gdb/onlinedocs/gdb/Variables.html
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>From gdb-prs-return-21747-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 09 19:34:12 2017
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/19436] C++11 ABI tag does not work
Date: Wed, 09 Aug 2017 19:34:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |ks132 at yandex dot ru
--- Comment #4 from Keith Seitz <keiths at redhat dot com> ---
*** Bug 18601 has been marked as a duplicate of this bug. ***
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/18601] Can't set breakpoint on function with abi_tag
attribute
Date: Wed, 09 Aug 2017 19:34:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Keith Seitz from comment #1)
> I hope to be working up a formal fix for this in the coming week, but I'd
> like to mention a few things, including a workaround.
That didn't happen, but the cxx-improvements patch which I reviewed should
help. That was reported in c++/19436, where there's been more discussion (and a
link to the patch series). Let's close this bug and track progress there.
*** This bug has been marked as a duplicate of bug 19436 ***
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>From gdb-prs-return-21748-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 11 08:35:34 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/14100] internal-error: frame_cleanup_after_sniffer:
Assertion `frame->prologue_cache == NULL' failed.
Date: Fri, 11 Aug 2017 08:35:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=be7d3cd5f13196dd070978aa48c2832c351c25b6
commit be7d3cd5f13196dd070978aa48c2832c351c25b6
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Aug 11 09:30:02 2017 +0100
Reset *THIS_CACHE in frame_unwind_try_unwinder in case of exception
It is required that unwinder->sniffer should set *this_cache to NULL if
the unwinder is not applicable or exception is thrown, so
78ac5f831692f70b841044961069e50d4ba6a76f adds clear_pointer_cleanup to set
*this_cache to NULL in case of exception in order to fix PR 14100.
https://sourceware.org/ml/gdb-patches/2012-08/msg00075.html
This patch removes that clear_pointer_cleanup, and catch all exception in
the caller of unwinder->sniffer. In case of exception, reset *this_case.
gdb:
2017-08-11 Yao Qi <yao.qi@linaro.org>
* dwarf2-frame.c (clear_pointer_cleanup): Remove.
(dwarf2_frame_cache): Remove reset_cache_cleanup.
(dwarf2_frame_cache):
* frame-unwind.c (frame_unwind_try_unwinder): Catch
RETURN_MASK_ALL and set *this_case to NULL.
* frame-unwind.h: Update comments.
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>From gdb-prs-return-21749-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 11 09:50:20 2017
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Subject: [Bug breakpoints/21886] Compressed MIPS code debugging impossible
due to memory breakpoint misplacement
Date: Fri, 11 Aug 2017 09:50:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Maciej W. Rozycki
<macro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=b3e687f4c5e2bd847ea0608fd8960820f3efbda3
commit b3e687f4c5e2bd847ea0608fd8960820f3efbda3
Author: Maciej W. Rozycki <macro@imgtec.com>
Date: Fri Aug 11 10:40:06 2017 +0100
PR breakpoints/21886: mem-break: Fix breakpoint insertion location
Fix a commit cd6c3b4ffc4e ("New gdbarch methods breakpoint_kind_from_pc
and sw_breakpoint_from_kind") regression and restore the use of
`->placed_address' rather than `->reqstd_address' as the location for a
memory breakpoint to be inserted at. Previously
`gdbarch_breakpoint_from_pc' was used that made that adjustment in
`default_memory_insert_breakpoint' from the preinitialized value,
however with the said commit that call is gone, so the passed
`->placed_address' has to be used for the initialization.
The regression manifests itself as the inability to debug any MIPS/Linux
compressed ISA dynamic executable as GDB corrupts the dynamic loader
with one of its implicit breakpoints, causing the program to crash, as
seen for example with the `mips-linux-gnu' target, o32 ABI, MIPS16 code,
and the gdb.base/advance.exp test case:
(gdb) continue
Continuing.
Program received signal SIGBUS, Bus error.
_dl_debug_initialize (ldbase=0, ns=0) at dl-debug.c:51
51 r = &_r_debug;
(gdb) FAIL: gdb.base/advance.exp: Can't run to main
gdb/
PR breakpoints/21886
* mem-break.c (default_memory_insert_breakpoint): Use
`->placed_address' rather than `->reqstd_address' for the
breakpoint location.
(cherry picked from commit ba7b109b296feac8cf8cab74db5f824dfa631610)
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Subject: [Bug breakpoints/21886] Compressed MIPS code debugging impossible
due to memory breakpoint misplacement
Date: Fri, 11 Aug 2017 14:25:00 -0000
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Maciej W. Rozycki <macro@linux-mips.org> ---
Fixed in master and 8.0, closing bug.
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Subject: [Bug breakpoints/21886] Compressed MIPS code debugging impossible
due to memory breakpoint misplacement
Date: Fri, 11 Aug 2017 14:25:00 -0000
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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--- Comment #3 from Maciej W. Rozycki <macro@linux-mips.org> ---
Fixed in master and 8.0, closing bug.
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>From gdb-prs-return-21752-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 11 19:23:45 2017
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From: "dominik.b.czarnota+bugzilla at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21927] Searching memory on remote target fails
Date: Fri, 11 Aug 2017 19:23:00 -0000
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Disconnect3d <dominik.b.czarnota+bugzilla at gmail dot com> changed:
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--- Comment #1 from Disconnect3d <dominik.b.czarnota+bugzilla at gmail dot com> ---
The bug I am mainly pointing at in here is invalid.
Actually the `find` command works perfectly BUT its documentation and short
help (`help find`) could be improved.
The Python API search is broken on remote targets (and the workaround for it is
to `set remote search-memory-packet off`).
I will post two seperate bug reports for those - with better description and
minimal example.
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>From gdb-prs-return-21753-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 11 19:43:41 2017
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From: "dominik.b.czarnota+bugzilla at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21945] New: Improve find command string search
Date: Fri, 11 Aug 2017 19:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21945
Bug ID: 21945
Summary: Improve find command string search
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dominik.b.czarnota+bugzilla at gmail dot com
Target Milestone: ---
Hey,
It is pretty hard to find "part of string" using `find` command.
See an example below (the prompt/plugin I use doesn't change anything here).
So I am debugging /bin/ls binary when it is in its entry point (_start
function). We have got a "/bin/ls" string on 0x7fffffffdabe:
```
pwndbg> x/s 0x7fffffffdabe
0x7fffffffdabe: "/bin/ls"
```
This is actually a null-terminated string. Finding all of it works fine:
```
pwndbg> find 0x7fffffffdabe, +100, "/bin/ls"
0x7fffffffdabe
1 pattern found.
```
Lets try to find just a part of it:
```
pwndbg> find 0x7fffffffdabe, +500, "/bin/"
Pattern not found.
```
It doesn't work. Why? The manual -
https://sourceware.org/gdb/onlinedocs/gdb/Searching-Memory.html - states it
perfectly:
> All values are interpreted in the current language.
> This means, for example, that if the current source language is C/C++ then searching for the string “hello” includes the trailing ’\0’.
So one way to find it is to find it by characters:
find 0x7fffffffdabe, +500, '/','b','i','n'
Or using a cast to truncate null-terminator:
find 0x7fffffffdabe, +500, {char[5]}"/bin/"
It would be nice to do one of two:
1. Change the current logic so null terminator wouldn't be explicitly added -
this is how it works when searching with Python GDB API:
```
pwndbg> search "/bin/ls"pwndbg> py import gdb; print("%x" %
gdb.selected_inferior().search_memory(0x7fffffffdabe, 500, "/bin/"))
7fffffffdabe
```
2. Change both manual and `help find` result to add this information about
null-terminated strings and the possibility how to search for a string.
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From: "dominik.b.czarnota+bugzilla at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21946] New: Python API search_memory remote targets bug
Date: Fri, 11 Aug 2017 20:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21946
Bug ID: 21946
Summary: Python API search_memory remote targets bug
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: dominik.b.czarnota+bugzilla at gmail dot com
Target Milestone: ---
Hey,
There is a bug with `gdb.selected_inferior().search_memory(startaddr, size,
searchfor)` returning wrong results in some cases for remote targets.
To reproduce:
1. In first console launch `gdbserver localhost:4444 /bin/ls`
2. In second console fire:
```
$ gdb /bin/ls
Reading symbols from /bin/ls...(no debugging symbols found)...done.
(gdb) target remote localhost:4444
Remote debugging using localhost:4444
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /lib64/ld-linux-x86-64.so.2 from remote target...
Reading symbols from target:/lib64/ld-linux-x86-64.so.2...(no debugging symbols
found)...done.
0x00007ff8582a6cc0 in _start () from target:/lib64/ld-linux-x86-64.so.2
(gdb) info proc mappings
process 11537
Mapped address spaces:
Start Addr End Addr Size Offset objfile
0x400000 0x41f000 0x1f000 0x0 /usr/bin/ls
0x61e000 0x620000 0x2000 0x1e000 /usr/bin/ls
0x620000 0x621000 0x1000 0x0 [heap]
0x7ff8582a6000 0x7ff8582c9000 0x23000 0x0
/usr/lib/ld-2.25.so
0x7ff8584c4000 0x7ff8584c7000 0x3000 0x0 [vvar]
0x7ff8584c7000 0x7ff8584c9000 0x2000 0x0 [vdso]
0x7ff8584c9000 0x7ff8584cb000 0x2000 0x23000
/usr/lib/ld-2.25.so
0x7ff8584cb000 0x7ff8584cc000 0x1000 0x0
0x7ffffffdd000 0x7ffffffff000 0x22000 0x0 [stack]
0xffffffffff600000 0xffffffffff601000 0x1000 0x0 [vsyscall]
(gdb) #grab stack startaddr & size
(gdb) py import gdb; print("0x%x" %
gdb.selected_inferior().search_memory(0x7ffffffdd000, 0x22000, "bin/"))
0x7f23050a3390
(gdb) # the address is invalid?
(gdb) x/s 0x7f23050a3390
0x7f23050a3390: <error: Cannot access memory at address 0x7f23050a3390>
(gdb) x/xg 0x7f23050a3390
0x7f23050a3390: Cannot access memory at address 0x7f23050a3390
(gdb) set remote search-memory-packet off
(gdb) py import gdb; print("0x%x" %
gdb.selected_inferior().search_memory(0x7ffffffdd000, 0x22000, "bin/"))
0x7fffffffdaba
(gdb) x/s 0x7fffffffdaba
0x7fffffffdaba: "bin/ls"
(gdb)
```
Basically it seems that when the `remote search-memory-packet` parameter is
enabled, the search results are wrong.
I am not aware what does this option introduce, but it seems it is a good
workaround.
My GDB/Python version can be seen below:
```
pwndbg> version
Gdb: GNU gdb (GDB) 8.0
Python: 3.6.2 (default, Jul 20 2017, 03:52:27) [GCC 7.1.1 20170630]
Pwndbg: 1.0.0 build: f481201
```
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21946] Python API search_memory remote targets bug
Date: Fri, 11 Aug 2017 20:19:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
> I am not aware what does this option introduce, but it seems it is a good
workaround.
That option disables the "qSearch:memory" remote serial protocol packet. I.e.,
when the option is on, GDB sends the pattern to GDBserver, GDBserver does the
searching, and returns back the result to GDB. When the option is off, GDB
falls back to search memory itself, by reading memory blocks out of the remote
target's memory. The latter is much slower. "qSearch:memory" is thus an
optimization.
Look for qSearch:memory at:
https://sourceware.org/gdb/onlinedocs/gdb/General-Query-Packets.html
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>From gdb-prs-return-21756-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Aug 11 20:36:13 2017
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From: "alexlindsay239 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21947] New: Memory leak coming from obstack
Date: Fri, 11 Aug 2017 20:36:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21947
Bug ID: 21947
Summary: Memory leak coming from obstack
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: alexlindsay239 at gmail dot com
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If I run `gdb ./hello_world` through valgrind, I get (among some other leaks):
==32024== 20,320 bytes in 5 blocks are definitely lost in loss record 11,413 of
11,460
==32024== at 0x4C2DE31: malloc (vg_replace_malloc.c:299)
==32024== by 0x3C3725: xmalloc (common-utils.c:44)
==32024== by 0x734C20: call_chunkfun (obstack.c:94)
==32024== by 0x734CE3: _obstack_begin_worker (obstack.c:141)
==32024== by 0x734DED: _obstack_begin (obstack.c:164)
==32024== by 0x21A289: auto_obstack::auto_obstack() (gdb_obstack.h:70)
==32024== by 0x4FC649: objfile_per_bfd_storage::objfile_per_bfd_storage()
(objfiles.h:188)
==32024== by 0x4F87EC: get_objfile_bfd_data(objfile*, bfd*) (objfiles.c:157)
==32024== by 0x4F95D6: allocate_objfile(bfd*, char const*,
enum_flags<objfile_flag>) (objfiles.c:420)
==32024== by 0x561F24: symbol_file_add_with_addrs(bfd*, char const*,
enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>,
objfile*) (symfile.c:1158)
==32024== by 0x56228B: symbol_file_add_from_bfd(bfd*, char const*,
enum_flags<symfile_add_flag>, section_addr_info*, enum_flags<objfile_flag>,
objfile*) (symfile.c:1268)
==32024== by 0x5458FB: solib_read_symbols(so_list*,
enum_flags<symfile_add_flag>) (solib.c:707)
Perhaps this is purely a libiberty bug?
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Subject: [Bug gdb/21947] Memory leak coming from obstack
Date: Fri, 11 Aug 2017 20:38:00 -0000
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Alex Lindsay <alexlindsay239 at gmail dot com> changed:
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----------------------------------------------------------------------------
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Host| |x86_64-pc-linux-gnu
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From: "b7.10110111 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug tdep/21948] New: stepi works wrongly with mixed 16- and 32-bit
thumb instructions
Date: Sat, 12 Aug 2017 07:01:00 -0000
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Bug ID: 21948
Summary: stepi works wrongly with mixed 16- and 32-bit thumb
instructions
Product: gdb
Version: 8.0
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Priority: P2
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I compile a simple "Hello, world" C program with the following command:
armv5te-unknown-linux-gnueabi-gcc hello.c -o test-thumb -mthumb
Then I start it as
gdb -ex 'tb *(main+0)' -ex r -ex 'info reg cpsr' -ex 'disp/i $pc' -ex 'disas/r
$pc,+12' ./test-thumb
and get this:
Temporary breakpoint 1, main () at hello.c:4
4 {
cpsr 0x60000030 1610612784
1: x/i $pc
=> 0x103f0 <main>: push {r7, lr}
Dump of assembler code from 0x103f0 to 0x103fc:
=> 0x000103f0 <main+0>: 80 b5 push {r7, lr}
0x000103f2 <main+2>: 00 af add r7, sp, #0
0x000103f4 <main+4>: 03 4b ldr r3, [pc, #12] ; (0x10404 <main+20>)
0x000103f6 <main+6>: 18 1c adds r0, r3, #0
0x000103f8 <main+8>: ff f7 4c ff bl 0x10294 <puts@plt>
End of assembler dump.
After that I do `si` 4 times, and the program exits, although it should have
just reached 0x000103f8 — call to puts@plt:
(gdb) si
0x000103f2 4 {
1: x/i $pc
=> 0x103f2 <main+2>: add r7, sp, #0
(gdb)
5 printf("Hello, ARM\n");
1: x/i $pc
=> 0x103f4 <main+4>: ldr r3, [pc, #12] ; (0x10404 <main+20>)
(gdb)
0x000103f6 5 printf("Hello, ARM\n");
1: x/i $pc
=> 0x103f6 <main+6>: adds r0, r3, #0
(gdb)
[Inferior 1 (process 10808) exited normally]
Tested on Raspberry Pi Model B on Raspbian Jessie, here're parts of
/proc/cpuinfo:
model name : ARMv6-compatible processor rev 7 (v6l)
Features : half thumb fastmult vfp edsp java tls
Hardware : BCM2835
Reproduces with GDB 8.0 as well as 8.0.50.20170811-git.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21925] [onlinedocs] Error syntax: show set
startup-with-shell
Date: Sat, 12 Aug 2017 16:33:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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CC| |sergiodj at redhat dot com
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Subject: [Bug gdb/21925] [onlinedocs] Error syntax: show set
startup-with-shell
Date: Sat, 12 Aug 2017 16:49:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ca145713f354ebd5e45ddf393ead46782d1f8b1e
commit ca145713f354ebd5e45ddf393ead46782d1f8b1e
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Sat Aug 12 12:46:03 2017 -0400
Fix typo on documentation ("show set startup-with-shell")
The documentation was erroneously saying that there is a command named
"show set startup-with-shell", while the correct version is "show
startup-with-shell". This commit fixes obvious mistake.
gdb/doc/ChangeLog:
2017-08-12 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21925
* gdb.texinfo (Starting) <startup-with-shell>: Fix typo ("show
set...").
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Subject: [Bug gdb/21925] [onlinedocs] Error syntax: show set
startup-with-shell
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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Subject: [Bug gdb/10833] GDB crashes on debugging multithreaded program on
ARM SMP dual core system
Date: Sat, 12 Aug 2017 21:27:00 -0000
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Jeffrey Walton <noloader at gmail dot com> changed:
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--- Comment #17 from Jeffrey Walton <noloader at gmail dot com> ---
Mee too: Program OK outside debugger, SIGILL under debugger when stepping?,
https://stackoverflow.com/q/45649778. Thanks ks1322 .
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Subject: [Bug gdb/10833] GDB crashes on debugging multithreaded program on
ARM SMP dual core system
Date: Sat, 12 Aug 2017 21:32:00 -0000
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--- Comment #18 from Jeffrey Walton <noloader at gmail dot com> ---
(In reply to ChrisD from comment #15)
> Sorry, I forgot to update this bug. This turned out to be a bug in the Linux
> kernel. It's been fixed since at least kernel 2.6.39. The problem never
> appeared again with any newer kernel. Gdb works fine on any multi-core ARM
> CPU. Comment 11 probably diagnosed this problem correctly. Please close the
> bug.
Chris, what version of GDB is this fixed under? I'm experiencing it under both
3.4.113-bananian and 4.1.15-ti-rt-r40-beaglebone kernels, but GDB may be too
old.
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Subject: [Bug gdb/10833] GDB crashes on debugging multithreaded program on
ARM SMP dual core system
Date: Sat, 12 Aug 2017 21:49:00 -0000
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--- Comment #19 from Jeffrey Walton <noloader at gmail dot com> ---
(In reply to Jeffrey Walton from comment #17)
> Me too: Program OK outside debugger, SIGILL under debugger when stepping?,
> https://stackoverflow.com/q/45649778. Thanks ks1322 .
Here are a couple of downstream Debian bugs:
* GDB Crash due to GDB/Kernel generated SIGILL,
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871952.
* SIGILL when stepping through application on armhf,
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=852854
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Subject: [Bug gdb/21954] New: "run" stops too early with detach-on-fork=off
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Bug ID: 21954
Summary: "run" stops too early with detach-on-fork=off
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Consider this program:
#include <unistd.h>
int main () {
if (fork () == 0) {
sleep(10);
}
return 0;
}
Start gdb. "set detach-on-fork off". Then "run".
What I expect to happen is that I will get a gdb prompt back when
both inferiors have stopped. My reason for this is that it seems
more "shell-like", but also because I think a process exit shouldn't
be a stop-worth event, at least not (1) when other processes are running,
or (2) there isn't a "catch exit" in place (which is a hypothetical
command but seems like a decent idea).
What actually happens is that I get a prompt after the parent exits.
Then, in all-stop, the other inferior is attached, but stopped.
In non-stop, the child process continues to run in the background.
This patch works ok for non-stop but I don't really know if it makes sense.
And, it doesn't work for all-stop, presumably because the child has
already been stopped at this point, and nothing restarts it.
diff --git a/gdb/infrun.c b/gdb/infrun.c
index d6723fd..c51bec6 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -5128,7 +5128,12 @@ Cannot fill $_exitsignal with the correct signal
number.\n"));
gdb_flush (gdb_stdout);
target_mourn_inferior (inferior_ptid);
stop_print_frame = 0;
- stop_waiting (ecs);
+ /* In multi-inferior, there might still be other processes
+ running. Only stop waiting if everything has exited. */
+ if (have_live_inferiors ())
+ prepare_to_wait (ecs);
+ else
+ stop_waiting (ecs);
return;
/* The following are the only cases in which we keep going;
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
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--- Comment #8 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d6382fffde99214ce4aee99a208ddb703c647008
commit d6382fffde99214ce4aee99a208ddb703c647008
Author: Tom Tromey <tom@tromey.com>
Date: Tue Jul 11 06:40:40 2017 -0600
Fix two regressions in scalar printing
PR gdb/21675 points out a few regressions in scalar printing.
One type of regression is due to not carrying over the old handling of
floating point printing -- where a format like "/d" causes a floating
point number to first be cast to a signed integer. This patch restores
this behavior.
The other regression is a longstanding bug in print_octal_chars: one of
the constants was wrong. This patch fixes the constant and adds static
asserts to help catch this sort of error.
ChangeLog
2017-08-14 Tom Tromey <tom@tromey.com>
PR gdb/21675
* valprint.c (LOW_ZERO): Change value to 034.
(print_octal_chars): Add static_asserts for octal constants.
* printcmd.c (print_scalar_formatted): Add 'd' case.
testsuite/ChangeLog
2017-08-14 Tom Tromey <tom@tromey.com>
PR gdb/21675:
* gdb.base/printcmds.exp (test_radices): New function.
* gdb.dwarf2/var-access.exp: Use p/u, not p/d.
* gdb.base/sizeof.exp (check_valueof): Use p/d.
* lib/gdb.exp (get_integer_valueof): Use p/d.
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Mon, 14 Aug 2017 16:19:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
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--- Comment #9 from Tom Tromey <tromey at sourceware dot org> ---
Fix checked in.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21954] New: unset entire environment no longer works
(regression since GDB 8.0)
Date: Tue, 15 Aug 2017 12:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21954
Bug ID: 21954
Summary: unset entire environment no longer works (regression
since GDB 8.0)
Product: gdb
Version: 8.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jonah at kichwacoders dot com
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doing 'unset env' no longer clears the whole environment. Compare GDB 8.0
(first) and current master (second) in the example below.
I did a git bisect and believe it was "C++ify gdb/common/environ.c"
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=9a6c7d9c021cfeb290d76584db7a01e57e7c3d4e
that introduced the regression
$ gdb -q -ex 'unset env' -ex 'run' /usr/bin/env < /dev/null
Reading symbols from /usr/bin/env...(no debugging symbols found)...done.
Delete all environment variables? (y or n) [answered Y; input not from
terminal]
Starting program: /usr/bin/env
PWD=/scratch/gdb/binutils-gdb
SHLVL=0
[Inferior 1 (process 24267) exited normally]
(gdb) quit
$ ./gdb/gdb -q -ex 'unset env' -ex 'run' /usr/bin/env < /dev/null
Python Exception <type 'exceptions.ImportError'> No module named gdb:
./gdb/gdb: warning:
Could not load the Python gdb module from `/usr/local/share/gdb/python'.
Limited Python support is available from the _gdb module.
Suggest passing --data-directory=/path/to/gdb/data-directory.
Reading symbols from /usr/bin/env...(no debugging symbols found)...done.
Delete all environment variables? (y or n) [answered Y; input not from
terminal]
Starting program: /usr/bin/env
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.zst=01;31:*.tzst=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.mjpg=01;35:*.mjpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:
LESSCLOSE=/usr/bin/lesspipe %s %s
XDG_MENU_PREFIX=xfce-
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Subject: [Bug gdb/21954] unset entire environment no longer works (regression
since GDB 8.0)
Date: Tue, 15 Aug 2017 17:09:00 -0000
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Jonah Graham <jonah at kichwacoders dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Jonah Graham <jonah at kichwacoders dot com> ---
Hi Sergio, I have added you to the CC list as you were the author of the commit
I identified. I hope that is ok.
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Subject: [Bug gdb/21954] unset entire environment no longer works (regression
since GDB 8.0)
Date: Tue, 15 Aug 2017 17:55:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-08-15
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
Ever confirmed|0 |1
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks, I'll look into this.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21954] unset entire environment no longer works (regression
since GDB 8.0)
Date: Tue, 15 Aug 2017 17:55:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=206726fbfdd521fbb184daedb71b85030453bf0b
commit 206726fbfdd521fbb184daedb71b85030453bf0b
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Tue Aug 15 13:49:18 2017 -0400
Fix PR gdb/21954: make 'unset environment' work again
When I made commit 9a6c7d9c021cfeb290d76584db7a01e57e7c3d4e, which
C++-fied gdb/common/environ.[ch], I mistakenly altered the behaviour
of the 'unset environment' command. This command, which should delete
all environment variables, is now resetting the list of variables to
the state they were when GDB was started.
This commit fixes this regression, and also adds a test on
gdb.base/environ.exp which really checks if 'unset environment'
worked.
gdb/ChangeLog:
2017-08-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21954
* infcmd.c (unset_environment_command): Use the 'clear' method on
the environment instead of resetting it.
gdb/testsuite/ChangeLog:
2017-08-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/21954
* gdb.base/environ.exp: Add test to check if 'unset environment'
works.
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Subject: [Bug gdb/21954] unset entire environment no longer works (regression
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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Received: (qmail 123090 invoked by uid 48); 15 Aug 2017 18:03:47 -0000
From: "msebor at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject:
=?UTF-8?B?W0J1ZyBidWlsZC8yMTc3M10gYmludXRpbHMtZ2RiL2dkYi9jb21tb24vdmVj? =?UTF-8?B?Lmg6MTA4NTozMTogZXJyb3I6IOKAmHZvaWQqIG1lbWNweSh2b2lkKiwgY29u? =?UTF-8?B?c3Qgdm9pZCosIHNpemVfdCnigJkgY29weWluZyBhbiBvYmplY3Qgb2Ygbm9u? =?UTF-8?B?LXRyaXZpYWwgdHlwZSDigJhidHJhY2VfaW5zbl9zIHtha2Egc3RydWN0IGJ0? =?UTF-8?B?cmFjZV9pbnNufeKAmSBmcm9tIGFuIGFycmF5IG9mIOKAmGJ0cmFjZV9pbnNu? =?UTF-8?B?X3MgWzFdIHtha2Egc3RydWN0IGJ0cmFjZV9pbnNuIFsxXX3igJkgWy1XZXJy? =?UTF-8?B?b3I9Y2xhc3MtbQ==?Date: Wed, 16 Aug 2017 09:40:00 -0000
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Martin Sebor <msebor at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |msebor at gmail dot com
--- Comment #1 from Martin Sebor <msebor at gmail dot com> ---
The errors were discussed on gcc-patches, along with a trivial patch for them:
https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00299.html
The solution might need to be guarded if GDB is meant to compile with C++ 98
compiler. Like so:
index ddfcddf..f344c4b 100644
--- a/gdb/common/enum-flags.h
+++ b/gdb/common/enum-flags.h
@@ -116,9 +116,13 @@ private:
public:
/* Allow default construction. */
+#if __cplusplus >= 201103L
+ enum_flags () = default;
+#else
enum_flags ()
: m_enum_value ((enum_type) 0)
{}
+#endif
/* If you get an error saying these two overloads are ambiguous,
then you tried to mix values of different enum types. */
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>From gdb-prs-return-21774-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 16 09:40:56 2017
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From: "jonah at kichwacoders dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21954] unset entire environment no longer works (regression
since GDB 8.0)
Date: Wed, 16 Aug 2017 09:47:00 -0000
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--- Comment #5 from Jonah Graham <jonah at kichwacoders dot com> ---
(In reply to Sergio Durigan Junior from comment #4)
> Fixed.
Thanks, this fixed our failing tests in Eclipse CDT!
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>From gdb-prs-return-21775-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 16 09:57:56 2017
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From: "jonah at kichwacoders dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Wed, 16 Aug 2017 13:07:00 -0000
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--- Comment #8 from Jonah Graham <jonah at kichwacoders dot com> ---
Thanks for fixing this, the test failures in Eclipse CDT are now resolved.
PS due to https://sourceware.org/ml/overseers/2017-q3/msg00065.html some
comments are missing in this bug:
https://sourceware.org/ml/gdb-prs/2017-q3/msg00203.html
https://sourceware.org/ml/gdb-prs/2017-q3/msg00204.html
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>From gdb-prs-return-21776-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Aug 16 13:07:06 2017
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Subject: [Bug gdb/21675] Regression since 8.0 printing has changed format for
decimal/octal/others
Date: Thu, 17 Aug 2017 02:11:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #9 from Tom Tromey <tromey at sourceware dot org> ---
Thanks for posting those links.
The bug is fixed, I'm closing this.
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>From gdb-prs-return-21777-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Aug 17 02:11:49 2017
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Received: (qmail 21456 invoked by uid 48); 17 Aug 2017 02:11:47 -0000
From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Thu, 17 Aug 2017 13:49:00 -0000
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--- Comment #5 from Tom Tromey <tromey at sourceware dot org> ---
I tripped over this again -- in fact I re-reported it, but the bug
was lost in the sourceware disk corruption.
This patch seems to fix the problem but I tend to doubt it is correct.
I haven't tested some scenarios, like one process exiting while stepping
in another; in fact I only tried this test program:
#include <unistd.h>
int main () {
if (fork () == 0) {
sleep(10);
}
return 0;
}
Here's the patch so far:
diff --git a/gdb/infrun.c b/gdb/infrun.c
index c51bec6..1416a48 100644
--- a/gdb/infrun.c
+++ b/gdb/infrun.c
@@ -5127,13 +5127,32 @@ Cannot fill $_exitsignal with the correct signal
number.\n"));
gdb_flush (gdb_stdout);
target_mourn_inferior (inferior_ptid);
- stop_print_frame = 0;
/* In multi-inferior, there might still be other processes
running. Only stop waiting if everything has exited. */
if (have_live_inferiors ())
- prepare_to_wait (ecs);
+ {
+ if (!(non_stop && target_is_non_stop_p ()))
+ {
+ struct inferior *inf;
+
+ ALL_NON_EXITED_INFERIORS (inf)
+ {
+ thread_info *tp = any_live_thread_of_process (inf->pid);
+ inferior_ptid = tp->ptid;
+ set_current_inferior (inf);
+ target_terminal_inferior ();
+ target_resume (RESUME_ALL, 0, GDB_SIGNAL_0);
+ target_commit_resume ();
+ break;
+ }
+ }
+ prepare_to_wait (ecs);
+ }
else
- stop_waiting (ecs);
+ {
+ stop_print_frame = 0;
+ stop_waiting (ecs);
+ }
return;
/* The following are the only cases in which we keep going;
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>From gdb-prs-return-21778-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Aug 17 13:51:02 2017
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Received: (qmail 19309 invoked by uid 48); 17 Aug 2017 13:49:15 -0000
From: "mattn.jp at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21963] New: gdb can't work on winpty
Date: Fri, 18 Aug 2017 02:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21963
Bug ID: 21963
Summary: gdb can't work on winpty
Product: gdb
Version: unknown
Status: UNCONFIRMED
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Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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Hi.
On Windows, when type ^X^A gdb open tui mode. And it seems that gdb open
CONOUT$ without FILE_SHARE_WRITE mode.
https://github.com/bminor/binutils-gdb/blob/0749542484129e77a30f1089d6d671197be5035f/gdb/windows-nat.c#L2059-L2060
So when I try to run gdb with tui mode, winpty fail to open CONOUT$.
https://github.com/rprichard/winpty/blob/e7c63efbbdac5a3e4cf9434728ebfcc72b92a53b/src/agent/Win32ConsoleBuffer.cc#L39
I could reproduce with following operation.
1. open vim.exe or gvim.exe
2. :terminal on vim
3. start gdb
4. type ^X^A
I don't make sure but I guess add FILE_SHARE_WRITE into the mode will fix this
issue.
Regards.
Yasuhiro Matsumoto
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From: "jfhart085 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21969] New: watchpoint break not triggered on
reverse continue
Date: Fri, 18 Aug 2017 08:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21969
Bug ID: 21969
Summary: watchpoint break not triggered on reverse continue
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: jfhart085 at gmail dot com
Target Milestone: ---
Created attachment 10351
--> https://sourceware.org/bugzilla/attachment.cgi?id=10351&action=edit
utl1.c - test program with deliberate stack overwrite
bash-3.2$ uname -a
Linux DellXPS 4.10.0 #1 SMP Thu Apr 13 09:55:54 EDT 2017 x86_64 GNU/Linux
build utl1.c as follows:
gcc -Wall -Wno-unused-but-set-variable -g utl1.c -o0 -o utl1
# forward continue - watch break triggered
gdb utl1
c-x 2
b *main # break on 1st main() instruction
run
record
watch -l *((long *)$sp)
continue
# reverse continue - watch break not triggered
gdb utl1
c-x 2
b *main # break on 1st main() instruction
b *main+41 # break on retq instruction
run
record
continue
watch -l *((long *)$sp)
reverse-continue
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Subject: [Bug tdep/21818] disassemble with v5TE remote: Assertion `info->mach
== bfd_get_mach (exec_bfd)' failed.
Date: Sat, 19 Aug 2017 17:31:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e60eb2880368b4e4752577c626ab0dadf0499cb5
commit e60eb2880368b4e4752577c626ab0dadf0499cb5
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Aug 18 09:30:12 2017 +0100
[ARM] Mark USER_SPECIFIED_MACHINE_TYPE in disassemble_info.flags
opcodes/arm-dis.c:print_insn may update disassemble_info.mach to
bfd_mach_arm_unknown unless USER_SPECIFIED_MACHINE_TYPE is marked.
When default_print_insn is called for the first time,
disassemble_info.mach is correctly set in GDB, but arm-dis.c:print_insn
sets it to bfd_mach_arm_unknown. Then, when default_print_insn is
called again (in a loop), it triggers the assert.
The patch fixes the assert by marking USER_SPECIFIED_MACHINE_TYPE so that
opcodes won't reset disassemble_info.mach.
gdb:
2017-08-18 Yao Qi <yao.qi@linaro.org>
PR tdep/21818
* arm-tdep.c (gdb_print_insn_arm): Mark
USER_SPECIFIED_MACHINE_TYPE if exec_bfd isn't NULL.
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Subject: [Bug threads/17545] no obvious way to associate threads with
processes
Date: Sat, 19 Aug 2017 17:58:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
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Target Milestone|--- |7.11
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This was fixed by the per-inferior thread ids patch:
commit 5d5658a1d3c3eb2a09c03f2f0662a1c01963c869
Author: Pedro Alves <palves@redhat.com>
Date: Wed Jan 13 10:56:07 2016 +0000
Per-inferior/Inferior-qualified thread IDs
...
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Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Sat, 19 Aug 2017 18:03:00 -0000
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--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
That was the wrong patch, but it has the bits from the earlier missing
patch in the context, so you can reconstruct it ok from there.
Anyway, that patch causes an assertion failure if you also
"set schedule-multiple on". The new call to target_resume(RESUME_ALL,...)
calls down to linux-nat.c, ending up in x86_linux_update_debug_registers,
which does
gdb_assert (lwp_is_stopped (lwp));
I am not sure how this code is intended to work.
Like, I would have thought that the "target_resume" call would do the
right thing; that is, that the backends would take care to only resume
things which are resumable. So, maybe I could fix this in linux_nat_resume...
but if this isn't generally how targets are supposed to work, then
maybe the correct fix is in the caller, to have it only resume threads
that are not already running.
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Subject: [Bug breakpoints/13463] bad multi-inferior behavior with breakpoint
resetting
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--- Comment #6 from Tom Tromey <tromey at sourceware dot org> ---
This bug seems to depend on non-stop.
When I apply the patches from bug 19471, and just
use "detach-on-fork off" and "schedule-multiple on",
I can set breakpoints ok.
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Subject: [Bug breakpoints/17543] could not set breakpoint in multi-inferior
case
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Duplicate.
*** This bug has been marked as a duplicate of bug 13463 ***
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Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Sat, 19 Aug 2017 18:09:00 -0000
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--- Comment #7 from Tom Tromey <tromey at sourceware dot org> ---
This seems to help:
diff --git a/gdb/linux-nat.c b/gdb/linux-nat.c
index 4124318..bd91744 100644
--- a/gdb/linux-nat.c
+++ b/gdb/linux-nat.c
@@ -1557,6 +1557,9 @@ static void
linux_resume_one_lwp_throw (struct lwp_info *lp, int step,
enum gdb_signal signo)
{
+ if (!lwp_is_stopped (lp))
+ return;
+
lp->step = step;
/* stop_pc doubles as the PC the LWP had when it was last resumed.
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Subject: [Bug breakpoints/13463] bad multi-inferior behavior with breakpoint
resetting
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--- Comment #7 from Tom Tromey <tromey at sourceware dot org> ---
*** Bug 17543 has been marked as a duplicate of this bug. ***
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Subject: [Bug breakpoints/13457] `catch syscall' doesn't work for parent
after `fork' is called
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
The theory in bug 17549, and in linespec, is that breakpoints should apply
to all inferiors. However, for "catch syscall", there is the additional
wrinkle that the syscall tables are OS- and architecture-dependent.
Maybe syscall catching should be per-architecture?
Right now it is per-inferior, but this seems a bit incorrect.
Another possibility might be to have a given "catch syscall"
automatically apply to any inferior where the arguments are valid
(re-translating syscall names as appropriate).
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From: "ciro.santilli at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21979] New: Make show args show CLI arguments passed via
gdbserver
Date: Sun, 20 Aug 2017 11:18:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21979
Bug ID: 21979
Summary: Make show args show CLI arguments passed via gdbserver
Product: gdb
Version: 7.11
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: ciro.santilli at gmail dot com
Target Milestone: ---
Current behavior is a bit confusing:
gdbserver :1234 ./prog.out arg0 arg1
gdb -ex 'target remote :1234' ./prog.out
Then:
(gdb) b main
(gdb) c
(gdb) show args
Argument list to give program being debugged when it is started is ""
(gdb) print argc
$1 = 3
Would require sending the arguments over the protocol I expect.
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>From gdb-prs-return-21789-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Aug 20 11:18:49 2017
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From: "ciro.santilli at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21980] New: Make "show args" show arguments passed
through the CLI to gdbserver
Date: Sun, 20 Aug 2017 11:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21980
Bug ID: 21980
Summary: Make "show args" show arguments passed through the CLI
to gdbserver
Product: gdb
Version: 7.11
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: ciro.santilli at gmail dot com
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Current behavior is a bit confusing:
gdbserver :1234 ./prog.out arg0 arg1
gdb -ex 'target remote :1234' ./prog.out
Then:
(gdb) b main
(gdb) c
(gdb) show args
Argument list to give program being debugged when it is started is ""
(gdb) print argc
$1 = 3
Would require sending the arguments over the protocol I expect.
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>From gdb-prs-return-21790-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Aug 20 11:33:16 2017
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From: "ciro.santilli at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21981] New: Document on --help and man that gdbserver
--multi can take the program and CLI arguments as arguments
Date: Sun, 20 Aug 2017 11:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21981
Bug ID: 21981
Summary: Document on --help and man that gdbserver --multi can
take the program and CLI arguments as arguments
Product: gdb
Version: 7.11
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: ciro.santilli at gmail dot com
Target Milestone: ---
gdbserver --help says:
Usage: gdbserver [OPTIONS] COMM PROG [ARGS ...]
gdbserver [OPTIONS] --attach COMM PID
gdbserver [OPTIONS] --multi COMM
however it should likely be:
gdbserver [OPTIONS] --multi COMM [PROG [ARGS ...]]
since --multi can take either PROG or ARGS:
gdbserver --multi :1234 ./prog.out a b
gdb -ex 'target extended-remote :1234' ./prog.out
Then:
(gdb) b main
(gdb) c
(gdb) show args
Argument list to give program being debugged when it is started is ""
(gdb) print argc
$1 = 3
and that behavior is very useful (you can have a single alias that either runs
the program without GDB, or appends "gdbserver" before the command).
The only annoyance is that the arguments only work for the first run, unlike an
explicit "set args" on host, but maybe that should be solved with:
https://sourceware.org/bugzilla/show_bug.cgi?id=21980
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>From gdb-prs-return-21792-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Aug 20 12:57:31 2017
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To: gdb-prs@sourceware.org
Subject: [Bug server/21979] Make show args show CLI arguments passed via
gdbserver
Date: Sun, 20 Aug 2017 12:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21979
Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
dup
*** This bug has been marked as a duplicate of bug 21980 ***
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>From gdb-prs-return-21791-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Aug 20 11:37:20 2017
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From: "ciro.santilli at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug server/21980] Make "show args" show arguments passed through
the CLI to gdbserver
Date: Sun, 20 Aug 2017 12:57:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21980
--- Comment #1 from Ciro Santilli <ciro.santilli at gmail dot com> ---
And while we are at it, also make args persist for --multi across runs:
currently it is only used for the first one. See also:
https://sourceware.org/bugzilla/show_bug.cgi?id=21981
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Subject: [Bug server/21980] Make "show args" show arguments passed through
the CLI to gdbserver
Date: Sun, 20 Aug 2017 14:04:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21980
--- Comment #2 from Andreas Schwab <schwab@linux-m68k.org> ---
*** Bug 21979 has been marked as a duplicate of this bug. ***
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>From gdb-prs-return-21794-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Aug 20 14:04:45 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug breakpoints/17549] catch load seems to be inferior-specific
Date: Sun, 20 Aug 2017 14:27:00 -0000
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--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
It looks like this might be as simple as clearing the new breakpoint's
"pspace" member in add_solib_catchpoint. At least that works for me
in initial testing.
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To: gdb-prs@sourceware.org
Subject: [Bug server/21980] Make "show args" show arguments passed through
the CLI to gdbserver
Date: Mon, 21 Aug 2017 05:38:00 -0000
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--- Comment #3 from Ciro Santilli <ciro.santilli at gmail dot com> ---
Sorry, the site or my internet was a bit shaky.
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Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Mon, 21 Aug 2017 10:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=21852
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I have a fix for this. I'm writing the commit message + testcase, will post
soon.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/19487] Result of call to __errno_location() is truncated to
32 bit on amd64
Date: Mon, 21 Aug 2017 11:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=19487
--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bf223d3e808e6fec9ee165d3d48beb74837796de
commit bf223d3e808e6fec9ee165d3d48beb74837796de
Author: Pedro Alves <palves@redhat.com>
Date: Mon Aug 21 11:34:32 2017 +0100
Handle function aliases better (PR gdb/19487, errno printing)
(Ref: https://sourceware.org/ml/gdb/2017-06/msg00048.html)
This patch improves GDB support for function aliases defined with
__attribute__ alias. For example, in the test added by this commit,
there is no reference to "func_alias" in the debug info at all, only
to "func"'s definition:
$ nm ./testsuite/outputs/gdb.base/symbol-alias/symbol-alias | grep "
func"
00000000004005ae t func
00000000004005ae T func_alias
$ readelf -w ./testsuite/outputs/gdb.base/symbol-alias/symbol-alias | grep
func -B 1 -A 8
<1><db>: Abbrev Number: 5 (DW_TAG_subprogram)
<dc> DW_AT_name : (indirect string, offset: 0x111): func
<e0> DW_AT_decl_file : 1
<e1> DW_AT_decl_line : 27
<e2> DW_AT_prototyped : 1
<e2> DW_AT_type : <0xf8>
<e6> DW_AT_low_pc : 0x4005ae
<ee> DW_AT_high_pc : 0xb
<f6> DW_AT_frame_base : 1 byte block: 9c
(DW_OP_call_frame_cfa)
<f8> DW_AT_GNU_all_call_sites: 1
So all GDB knows about "func_alias" is from the minsym (elf symbol):
(gdb) p func_alias
$1 = {<text variable, no debug info>} 0x4005ae <func>
(gdb) ptype func_alias
type = int ()
(gdb) p func
$2 = {struct S *(void)} 0x4005ae <func>
(gdb) ptype func
type = struct S {
int field1;
int field2;
} *(void)
The result is that calling func_alias from the command line produces
incorrect results.
This is similar (though not exactly the same) to the glibc
errno/__errno_location/__GI___errno_location situation. On glibc,
errno is defined like this:
extern int *__errno_location (void);
#define errno (*__errno_location ())
with __GI___errno_location being an internal alias for
__errno_location. On my system's libc (F23), I do see debug info for
__errno_location, in the form of name vs linkage name:
<1><95a5>: Abbrev Number: 18 (DW_TAG_subprogram)
<95a6> DW_AT_external : 1
<95a6> DW_AT_name : (indirect string, offset: 0x2c26):
__errno_location
<95aa> DW_AT_decl_file : 1
<95ab> DW_AT_decl_line : 24
<95ac> DW_AT_linkage_name: (indirect string, offset: 0x2c21):
__GI___errno_location
<95b0> DW_AT_prototyped : 1
<95b0> DW_AT_type : <0x9206>
<95b4> DW_AT_low_pc : 0x20f40
<95bc> DW_AT_high_pc : 0x11
<95c4> DW_AT_frame_base : 1 byte block: 9c
(DW_OP_call_frame_cfa)
<95c6> DW_AT_GNU_all_call_sites: 1
however that doesn't matter in practice, because GDB doesn't record
demangled names anyway, and so we end up with the exact same situation
covered by the testcase.
So the fix is to make the expression parser find a debug symbol for
the same address as the just-found minsym, when a lookup by name
didn't find a debug symbol by name. We now get:
(gdb) p func_alias
$1 = {struct S *(void)} 0x4005ae <func>
(gdb) p __errno_location
$2 = {int *(void)} 0x7ffff6e92830 <__errno_location>
I've made the test exercise variable aliases too, for completeness.
Those already work correctly, because unlike for function aliases, GCC
emits debug information for variable aliases.
Tested on GNU/Linux.
gdb/ChangeLog:
2017-08-21 Pedro Alves <palves@redhat.com>
PR gdb/19487
* c-exp.y (variable production): Handle function aliases.
* minsyms.c (msymbol_is_text): New function.
* minsyms.h (msymbol_is_text): Declare.
* symtab.c (find_function_alias_target): New function.
* symtab.h (find_function_alias_target): Declare.
gdb/testsuite/ChangeLog:
2017-08-21 Pedro Alves <palves@redhat.com>
PR gdb/19487
* gdb.base/symbol-alias.c: New.
* gdb.base/symbol-alias2.c: New.
* gdb.base/symbol-alias.exp: New.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/19487] Result of call to __errno_location() is truncated to
32 bit on amd64
Date: Mon, 21 Aug 2017 14:48:00 -0000
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--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
The original issue should be fixed, provided you have glibc debug
info installed.
There's a follow up series pending that will improve things further, by
stopping GDB from silently assuming that functions without debug info
have type "int ()":
https://sourceware.org/ml/gdb-patches/2017-07/msg00137.html
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From: "jon at beniston dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21985] New: set inferior-tty doesn't work for remote or sim
targets
Date: Mon, 21 Aug 2017 16:01:00 -0000
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Bug ID: 21985
Summary: set inferior-tty doesn't work for remote or sim
targets
Product: gdb
Version: HEAD
Status: UNCONFIRMED
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Component: gdb
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Created attachment 10356
--> https://sourceware.org/bugzilla/attachment.cgi?id=10356&action=edit
Potential fix
The set inferior-tty command doesn't work for remote or sim targets. (That is,
remote targets using remote-fileio to have the IO appear on the debug host).
This is a shame as Eclipse (and potentially other front-ends) use this command
to separate the windows used for target IO and the gdb console. This therefore
doesn't currently work for remote and sim targets.
The attached patch adds support for this command in remote-fileio.c and
remote-sim.c. Reads/writes from/to stdin/stdout are redirected to the tty.
This may not be the idea way to implement this within GDB, but it does get it
working with Eclipse.
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From: "jon at beniston dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21985] set inferior-tty doesn't work for remote or sim
targets
Date: Mon, 21 Aug 2017 16:17:00 -0000
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jon at beniston dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Attachment #10356|0 |1
is obsolete| |
--- Comment #1 from jon at beniston dot com ---
Created attachment 10357
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Add stderr support for sim target
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Mon, 21 Aug 2017 16:29:00 -0000
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--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
IWBN if we had some sort of "catch inferior-exit" / "catch exit" catchpoint,
which you'd use to stop when an inferior exits. If we had that, switching to
not stopping by default would be an even easier sell.
With such a catchpoint, we could then do things like "catch exit if $_exitcode
!= 0", for example.
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Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Mon, 21 Aug 2017 20:19:00 -0000
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--- Comment #9 from Pedro Alves <palves at redhat dot com> ---
> That was the wrong patch, but it has the bits from the earlier missing
> patch in the context, so you can reconstruct it ok from there.
Actually, I'm confused on what would the patch look like.
In all-stop (not fake all-stop-on-top-of-non-stop, e.g., against gdbserver), we
need to issue one resume only, because once you send a resume request to the
target, you can't send another until the target stops again.
I don't think you should be calling target_resume at that level. It bypasses
layers of thread-is-resumed state private to infrun. You should probably be
calling resume or keep_going. If an inferior exited while we were trying to
step some thread of another inferior, we need to switch back to that thread
instead of some other random thread. That's why you see several:
if (!switch_back_to_stepped_thread (ecs))
keep_going (ecs);
in infrun.c. In this case, we probably need to do something like:
if (!switch_back_to_stepped_thread (ecs))
{
// pick any random live thread and switch to it.
keep_going (ecs);
}
return;
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Tue, 22 Aug 2017 18:19:00 -0000
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--- Comment #10 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Pedro Alves from comment #9)
> Actually, I'm confused on what would the patch look like.
Given the below, probably not a big deal :)
> in infrun.c. In this case, we probably need to do something like:
>
> if (!switch_back_to_stepped_thread (ecs))
> {
> // pick any random live thread and switch to it.
> keep_going (ecs);
> }
> return;
Thanks, that makes sense.
I figured I had to call keep_going, but that failed; it doesn't
switch back to a random live thread. But maybe I can do this
by hand by resetting the proper members of "ecs"?
Also it wasn't clear to me if we would want a stop in some situations,
like "nexting and then the process dies".
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Subject: [Bug gdb/14678] GDB 7.5 fails to build unless makeinfo is installed
Date: Tue, 22 Aug 2017 18:31:00 -0000
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--- Comment #3 from psmith at gnu dot org ---
I'm still seeing this with GDB 8.0 using the tar.xz package from ftp.gnu.org.
$ mkdir obj
$ cd obj
$ ../gdb-8.0/configure
...
checking for makeinfo... no
obj/gdb-8.0/missing: 81: obj/gdb-8.0/missing: makeinfo: not found
...
checking for makeinfo... obj/gdb-8.0/missing makeinfo --split-size=5000000
configure: WARNING:
*** Makeinfo is missing. Info documentation will not be built.
$ make
$ make install
...
mv GDBvn.new GDBvn.texi
/usr/src/cc/gdb-7.5/missing makeinfo --split-size=5000000 --split-size=5000000
-I /usr/src/cc/gdb-7.5/gdb/doc/../../readline/doc -I
/usr/src/cc/gdb-7.5/gdb/doc/../mi -I /usr/src/cc/gdb-7.5/gdb/doc \
-o gdb.info /usr/src/cc/gdb-7.5/gdb/doc/gdb.texinfo
WARNING: `makeinfo' is missing on your system. You should only need it if
you modified a `.texi' or `.texinfo' file, or any other file
indirectly affecting the aspect of the manual. The spurious
call might also be the consequence of using a buggy `make' (AIX,
DU, IRIX). You might want to install the `Texinfo' package or
the `GNU make' package. Grab either from any GNU archive site.
make[7]: *** [gdb.info] Error 1
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Subject: [Bug gdb/14678] GDB 7.5 fails to build unless makeinfo is installed
Date: Tue, 22 Aug 2017 19:04:00 -0000
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--- Comment #4 from psmith at gnu dot org ---
Sorry I pasted the wrong cut buffer into my comment above: the error messages
refer to gdb-8.0 not gdb-7.5:
if test -z "-I ../gdb-8.0/gdb/doc/../../readline/doc"; then \
echo "@set SYSTEM_READLINE" >> ./GDBvn.new; \
fi
if [ -n "" ]; then \
echo "@set SYSTEM_GDBINIT " >> ./GDBvn.new; \
fi
mv GDBvn.new GDBvn.texi
../gdb-8.0/missing makeinfo --split-size=5000000 --split-size=5000000 -I
../gdb-8.0/gdb/doc/../../readline/doc -I ../gdb-8.0/gdb/doc/../mi -I
../gdb-8.0/gdb/doc \
-o gdb.info ../gdb-8.0/gdb/doc/gdb.texinfo
../gdb-8.0/missing: 81: ../gdb-8.0/missing: makeinfo: not found
WARNING: 'makeinfo' is missing on your system.
You should only need it if you modified a '.texi' file, or
any other file indirectly affecting the aspect of the manual.
You might want to install the Texinfo package:
<http://www.gnu.org/software/texinfo/>
The spurious makeinfo call might also be the consequence of
using a buggy 'make' (AIX, DU, IRIX), in which case you might
want to install GNU make:
<http://www.gnu.org/software/make/>
make[5]: *** [Makefile:503: gdb.info] Error 127
I'm not sure if I'm supposed to change the status of this bug myself and if so
what I should change it to...
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Subject: [Bug gdb/14678] GDB 7.5 fails to build unless makeinfo is installed
Date: Tue, 22 Aug 2017 19:42:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Paul, please feel free to edit the bug status. I had set it to waiting in
comment #1 waiting for your response.
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Subject: [Bug gdb/14678] GDB 7.5 fails to build unless makeinfo is installed
Date: Wed, 23 Aug 2017 21:29:00 -0000
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--- Comment #6 from psmith at gnu dot org ---
Oops sorry; I dpn't have much to add beyond what Aaro said: you need to run
"make install" to see the issue. Cheers!
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Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Wed, 23 Aug 2017 21:31:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=87215ad1651ca3094d813eae06233fd7259b37e5
commit 87215ad1651ca3094d813eae06233fd7259b37e5
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Tue Aug 22 08:52:44 2017 -0400
Fix PR remote/21852: Remote run without specifying a local binary crashes
GDB
There is an assertion that is triggering when we start GDB and
instruct it to debug a remote inferior, but don't provide a local
binary, like:
./gdb -nx -q --data-directory=data-directory -ex "tar ext :1234" \
-ex "set remote exec-file /bin/ls" -ex r
In this case, when calling exec_file_locate_attach to locate the
inferior, GDB is incorrectly resetting the breakpoints without a
thread/inferior even running, which causes an assertion to be
triggered:
binutils-gdb/gdb/thread.c:1609: internal-error:
scoped_restore_current_thread::scoped_restore_current_thread(): Assertion `tp
!= NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
This happens because add_current_inferior_and_thread (on remote.c) is
breaking an invariant: making inferior_ptid point to a non-existing
thread and then calling common code, which in this case is
breakpoint_re_set. The fix is to make sure that inferior_ptid points
to null_ptid if there is no thread present.
A testcase is provided. Regtested on buildbot.
gdb/ChangeLog:
2017-08-23 Pedro Alves <palves@redhat.com>
PR remote/21852
* remote.c (add_current_inferior_and_thread): Set inferior_ptid
to null_ptid and switch to thread without reading the registers
after adding the inferior.
gdb/testsuite/ChangeLog:
2017-08-23 Sergio Durigan Junior <sergiodj@redhat.com>
PR remote/21852
* gdb.server/normal.c: New file, copied from gdb.base.
* gdb.server/run-without-local-binary.exp: New file.
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Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Wed, 23 Aug 2017 22:03:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #5 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
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To: gdb-prs@sourceware.org
Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Wed, 23 Aug 2017 22:12:00 -0000
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--- Comment #11 from Tom Tromey <tromey at sourceware dot org> ---
> IWBN if we had some sort of "catch inferior-exit" / "catch exit" catchpoint,
which you'd use to stop when an inferior exits. If we had that, switching to
not stopping by default would be an even easier sell.
I started one once. It's in my github, on the catch-exit branch.
It worked by using PTRACE_O_TRACEEXIT, so not exactly the same thing.
I suppose on systems without that, it could fall back to target-waitkind-based
stops.
It would need quite a bit of work now. And, I never wrote the gdbserver
or remote protocol parts.
> You should probably be calling resume or keep_going.
I tried what you suggested and it works, but I don't really know
if it's correct or even close.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Thu, 24 Aug 2017 07:46:00 -0000
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--- Comment #12 from Pedro Alves <palves at redhat dot com> ---
(In reply to Tom Tromey from comment #11)
> > IWBN if we had some sort of "catch inferior-exit" / "catch exit" catchpoint,
> which you'd use to stop when an inferior exits. If we had that, switching
> to not stopping by default would be an even easier sell.
>
> I started one once. It's in my github, on the catch-exit branch.
>
> It worked by using PTRACE_O_TRACEEXIT, so not exactly the same thing.
> I suppose on systems without that, it could fall back to
> target-waitkind-based
> stops.
That must have been for intercepting the exits before the process really exits?
Sort of like "catch syscall exit"? Maybe so that you could still inspect
memory?
What I was suggesting instead was just to have a way to have GDB stop after the
inferior dies, on TARGET_WAITIND_EXITED/TARGET_WAITIND_SIGNALED. I.e., it'd be
totally an infrun.c/breakpoint.c thing, no target backend change necessary at
all.
>
> It would need quite a bit of work now. And, I never wrote the gdbserver
> or remote protocol parts.
>
> > You should probably be calling resume or keep_going.
>
> I tried what you suggested and it works, but I don't really know
> if it's correct or even close.
Next step would be testcases, exercising the several different scenarios, I
think. all-stop/non-stop X single-process/multi-process X single-thread X
multi-threaded X set schedule-multiple on/off X set scheduler-locking on/off,
etc.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/21852] Remote run without specifying a local binary
crashes GDB
Date: Thu, 24 Aug 2017 10:12:00 -0000
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--- Comment #6 from Simon Marchi <simon.marchi at ericsson dot com> ---
I haven't had time to look at it yet, but thanks!
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Subject: [Bug breakpoints/21555] "error re-setting breakpoint" on PIE
executables
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #5 from Yao Qi <qiyao at gcc dot gnu.org> ---
Close it again.
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/22002] New: GDB assertion on -gdwarf-5
-fdebug-types-section
Date: Thu, 24 Aug 2017 14:31:00 -0000
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Bug ID: 22002
Summary: GDB assertion on -gdwarf-5 -fdebug-types-section
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
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Debuggees compiled with -gdwarf-5 -fdebug-types-section now crash GDB such as:
(gdb) break 60
dwarf2read.c:9516: internal-error: void setup_type_unit_groups(die_info*,
dwarf2_cu*): Assertion `per_cu->is_debug_types' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) FAIL: gdb.cp/pr17132.exp: setting
breakpoint at 60 (GDB internal error)
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/22002] Assertion on debuggee built with -gdwarf-5
-fdebug-types-section
Date: Thu, 24 Aug 2017 14:38:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jan.kratochvil at redhat dot com
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |jan.kratochvil at redhat dot com
Target Milestone|--- |8.0.1
Summary|GDB assertion on -gdwarf-5 |Assertion on debuggee built
|-fdebug-types-section |with -gdwarf-5
| |-fdebug-types-section
--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Checked in:
f1902523c9b7941775a2c64af89de0f111b8924c master
06f84c95a2d88d03c1c231bfd436ac9d225d6615 gdb-8.0-branch
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Subject: [Bug symtab/22003] New: Incompatibility with -gdwarf-5 -
DW_FORM_implicit_const
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Bug ID: 22003
Summary: Incompatibility with -gdwarf-5 -
DW_FORM_implicit_const
Product: gdb
Version: 8.0
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DWARF-5 implemented in 8.0 has a bug:
-gdwarf-4:
ptype logical
type = const char [2]
(gdb) PASS: gdb.base/constvars.exp: ptype logical
-gdwarf-5:
ptype logical
type = const char []
(gdb) FAIL: gdb.base/constvars.exp: ptype logical
<2><2fc>: Abbrev Number: 1 (DW_TAG_variable)
<2fd> DW_AT_name : (indirect string, offset: 0x2eb): logical
<301> DW_AT_decl_file : 1
1 DW_TAG_variable [no children]
DW_AT_name DW_FORM_strp
DW_AT_decl_file DW_FORM_implicit_const: 1
During symbol reading, invalid attribute class or form for
'DW_FORM_implicit_const' in '(null)'.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/22003] Incompatibility with -gdwarf-5 -
DW_FORM_implicit_const
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jan Kratochvil <jkratoch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=663c44ac4d4336e99c282705b1d289b365b273d3
commit 663c44ac4d4336e99c282705b1d289b365b273d3
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu Aug 24 16:39:11 2017 +0200
DWARF-5 Fix DW_FORM_implicit_const
-gdwarf-4:
ptype logical
type = const char [2]
(gdb) PASS: gdb.base/constvars.exp: ptype logical
-gdwarf-5:
ptype logical
type = const char []
(gdb) FAIL: gdb.base/constvars.exp: ptype logical
<2><2fc>: Abbrev Number: 1 (DW_TAG_variable)
<2fd> DW_AT_name : (indirect string, offset: 0x2eb): logical
<301> DW_AT_decl_file : 1
1 DW_TAG_variable [no children]
DW_AT_name DW_FORM_strp
DW_AT_decl_file DW_FORM_implicit_const: 1
During symbol reading, invalid attribute class or form for
'DW_FORM_implicit_const' in '(null)'.
gdb/ChangeLog
2017-08-24 Jan Kratochvil <jan.kratochvil@redhat.com>
PR symtab/22003
* dwarf2read.c (dwarf2_const_value_attr, dump_die_shallow)
(dwarf2_get_attr_constant_value, dwarf2_fetch_constant_bytes)
(skip_form_bytes, attr_form_is_constant): Handle
DW_FORM_implicit_const.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/22003] Incompatibility with -gdwarf-5 -
DW_FORM_implicit_const
Date: Thu, 24 Aug 2017 14:43:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Jan Kratochvil
<jkratoch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=f74f69f45570ced87b9f778983a63157b551a129
commit f74f69f45570ced87b9f778983a63157b551a129
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Thu Aug 24 16:39:11 2017 +0200
DWARF-5 Fix DW_FORM_implicit_const
-gdwarf-4:
ptype logical
type = const char [2]
(gdb) PASS: gdb.base/constvars.exp: ptype logical
-gdwarf-5:
ptype logical
type = const char []
(gdb) FAIL: gdb.base/constvars.exp: ptype logical
<2><2fc>: Abbrev Number: 1 (DW_TAG_variable)
<2fd> DW_AT_name : (indirect string, offset: 0x2eb): logical
<301> DW_AT_decl_file : 1
1 DW_TAG_variable [no children]
DW_AT_name DW_FORM_strp
DW_AT_decl_file DW_FORM_implicit_const: 1
During symbol reading, invalid attribute class or form for
'DW_FORM_implicit_const' in '(null)'.
gdb/ChangeLog
2017-08-24 Jan Kratochvil <jan.kratochvil@redhat.com>
PR symtab/22003
* dwarf2read.c (dwarf2_const_value_attr, dump_die_shallow)
(dwarf2_get_attr_constant_value, dwarf2_fetch_constant_bytes)
(skip_form_bytes, attr_form_is_constant): Handle
DW_FORM_implicit_const.
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/22003] Incompatibility with -gdwarf-5 -
DW_FORM_implicit_const
Date: Fri, 25 Aug 2017 06:37:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |jan.kratochvil at redhat dot com
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |jan.kratochvil at redhat dot com
Target Milestone|--- |8.0.1
--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Checked in.
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Subject: [Bug c++/16841] virtual inheritance via typedef cannot find base
Date: Fri, 25 Aug 2017 09:43:00 -0000
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Zeson <westion717 at gmail dot com> changed:
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----------------------------------------------------------------------------
CC| |westion717 at gmail dot com
--- Comment #5 from Zeson <westion717 at gmail dot com> ---
How about the progress of this bug?
I found it still exists in gdb 8.0.
typedef struct {
int x;
} A;
struct C : A {
int y;
};
int main()
{
C c;
return 55;
}
gdb a.out
ptype C::x
Internal error: non-aggregate type to value_struct_elt_for_reference
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From: "lassi.niemisto at wapice dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21603] powerpc-linux-gnu-gdb throws internal error on
remote debugging: 'gdbarch!=NULL' failed
Date: Fri, 25 Aug 2017 09:44:00 -0000
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Lassi Niemistö <lassi.niemisto at wapice dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |lassi.niemisto at wapice dot com
--- Comment #1 from Lassi Niemistö <lassi.niemisto at wapice dot com> ---
I get the same with:
* MPC8309E
* Debugged SW compiled with GCC 4.8.2 -ggdb3
* Remote debugging or core dump analysis
* Custom GDB 8.0 build with
--enable-targets=powerpc-linux,powerpc-freebsd,powerpc-elf,powerpc-eabi
Attaching a sample binary and sample core file for easy recreation.
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Subject: [Bug gdb/21603] powerpc-linux-gnu-gdb throws internal error on
remote debugging: 'gdbarch!=NULL' failed
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--- Comment #2 from Lassi Niemistö <lassi.niemisto at wapice dot com> ---
Created attachment 10364
--> https://sourceware.org/bugzilla/attachment.cgi?id=10364&action=edit
Core file created by running on PowerPC
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Subject: [Bug gdb/21603] powerpc-linux-gnu-gdb throws internal error on
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--- Comment #3 from Lassi Niemistö <lassi.niemisto at wapice dot com> ---
Created attachment 10365
--> https://sourceware.org/bugzilla/attachment.cgi?id=10365&action=edit
Crashing demo program for PowerPC
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--- Comment #4 from Lassi Niemistö <lassi.niemisto at wapice dot com> ---
Created attachment 10366
--> https://sourceware.org/bugzilla/attachment.cgi?id=10366&action=edit
Source code for the crashing sample program
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https://sourceware.org/bugzilla/show_bug.cgi?id=22006
Bug ID: 22006
Summary: Missing MI event when the "return" command is used
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
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When the users returns from a function manually with the "return" command,
nothing is printed on the MI UIs that would let the front-ends know that the
thread is now stopped somewhere else. The return command can come from a
separate CLI ui, -interpreter-exec or CLI-in-MI, it's all the same.
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Subject: [Bug threads/19471] unexpected stop in multi-inferior debugging
Date: Fri, 25 Aug 2017 16:48:00 -0000
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--- Comment #13 from Tom Tromey <tromey at sourceware dot org> ---
> And, I never wrote the gdbserver or remote protocol parts.
It turns out I did, just not the docs or tests.
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22010] New: PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Fri, 25 Aug 2017 17:51:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22010
Bug ID: 22010
Summary: PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
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Hi,
Following commit d6382fffde99214ce4aee99a208ddb703c647008 the following test
regressed on arm-none-eabi targets:
PASS->FAIL: gdb.base/sizeof.exp: check valueof "'\377'"
Having investigated a bit, I found the following behavior to be surprising:
(gdb) print (unsigned char) '\377'
$5 = 255 '\377'
(gdb) print /d ((unsigned char) '\377')
$7 = -1
I would expect printing 255 as a decimal integer to give 255 but here it gives
-1. It seems to be ignoring the cast.
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Fri, 25 Aug 2017 18:37:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
The manual says:
@item d
Print as integer in signed decimal.
@item u
Print as integer in unsigned decimal.
Note "signed".
This was discussed at:
https://sourceware.org/ml/gdb-patches/2017-07/msg00182.html
What does the failure look like, exactly?
Note that get_integer_valueof is also documented as explicitly returning a
signed decimal:
# Retrieve the value of EXP in the inferior, as a signed decimal value
# (using "print /d").
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Fri, 25 Aug 2017 20:20:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
I think I see the problem:
set signof_byte [get_integer_valueof "'\\377'" -1]
set signof_char [get_integer_valueof "(int) (char) -1" -1]
set signof_signed_char [get_integer_valueof "(int) (signed char) -1" -1]
set signof_unsigned_char [get_integer_valueof "(int) (unsigned char) -1" -1]
check_valueof "'\\377'" ${signof_byte}
check_valueof "(int) (char) -1" ${signof_char}
check_valueof "(int) (signed char) -1" ${signof_signed_char}
check_valueof "(int) (unsigned char) -1" ${signof_unsigned_char}
Note there's no '(int)' cast in the 'get_integer_valueof \\377' test,
unlike the other tests. At first sight, that should be OK, because
char literals in C are supposed to be int, unlike in C++.
However, GDB gets that wrong (bug 19973):
(gdb) ptype typeof ('\377')
type = char
(gdb) p sizeof ('\377')
$5 = 1
If GDB realized that '\\377' really were an int, then:
- if gdb thought that char is signed, that'd result in
'(int) (signed char) 0xff' => -1.
- if gdb thought that char was unsigned, then that would result in
'(int) (unsigned char) 0xff' => 0xff.
Probably changing the test to do:
- set signof_byte [get_integer_valueof "'\\377'" -1]
+ set signof_byte [get_integer_valueof "(int) '\\377'" -1]
would work around this. Alternatively, change the .exp to do:
- set signof_byte [get_integer_valueof "'\\377'" -1]
+ set signed_char_lit [get_integer_valueof "'\\377' < 0" -1]
- check_valueof "'\\377'" ${signof_byte}
+ check_valueof "'\\377' < 0" ${signed_char_lit}
etc. instead, and the test .c file to match:
- value = '\377';
+ value = '\377' < 0;
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Subject: [Bug c++/22013] New: Default value in template argument list breaks
RTTI lookup
Date: Fri, 25 Aug 2017 20:21:00 -0000
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Bug ID: 22013
Summary: Default value in template argument list breaks RTTI
lookup
Product: gdb
Version: 8.0
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Created attachment 10370
--> https://sourceware.org/bugzilla/attachment.cgi?id=10370&action=edit
Source file for reproducer
While trying to access one of my types, I am getting "warning: RTTI symbol not
found for class ...".
This is because one of the template parameters has a default value, and the
type is found if you omit the default value but not if you include it. And,
the Python type seems to want to include it.
Attached find a file tvtest.cpp. To reproduce the problem:
$ g++ -Wall -ggdb3 -o tvtest tvtest.cpp
$ gdb tvtest
...
(gdb) br 49
Breakpoint 1 at 0x989: file tvtest.cpp, line 49.
(gdb) run
Breakpoint 1, main (argc=1, argv=0x7fffffffe638) at tvtest.cpp:52
52 return iim.container.tree->_depth;
(gdb) p iim.container.tree->_depth
warning: RTTI symbol not found for class 'TreeVector<IntKeyMap<long,
1000>::ValueWrapper>::Tree'
$1 = 3
(gdb) python print str(gdb.parse_and_eval("iim")["container"]["tree"].type)
TreeVector<IntKeyMap<long>::ValueWrapper>::Tree *
Note that the type of the container is
TreeVector<IntKeyMap<long>::ValueWrapper>::Tree (without the default template
argument) but when I try to use GDB to examine the contents of that type, GDB
tries to lookup TreeVector<IntKeyMap<long, 1000>::ValueWrapper>::Tree (with the
default argument) and fails.
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Subject: [Bug c++/22013] Default value in template argument list breaks RTTI
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--- Comment #1 from psmith at gnu dot org ---
FYI I've tried this with GCC 6.2 and 7.2, and GDB 7.11 and 8.0.
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Subject: [Bug c++/22013] Default value in template argument list breaks RTTI
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--- Comment #2 from psmith at gnu dot org ---
On GNU/Linux x86_64 (sorry for spammy udpates)
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To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Mon, 28 Aug 2017 14:23:00 -0000
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Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
Target Milestone|8.0.1 |---
--- Comment #4 from Joel Brobecker <brobecker at gnat dot com> ---
We use the "Target Milestone" field when the GDB group has decided that the PR
must be fixed for that release. Since this is not an 8.0.x regression, I do not
consider this issue as being required for the 8.0.1 release, and therefore
removed the target milestone.
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>From gdb-prs-return-21834-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 14:23:43 2017
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To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
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Date: Mon, 28 Aug 2017 14:36:00 -0000
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--- Comment #5 from Joel Sherrill <joel.sherrill at oarcorp dot com> ---
This was a regression that appeared in 7.12. Isn't that enough to include it in
an 8.0.1?
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>From gdb-prs-return-21835-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 14:36:43 2017
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From: "brobecker at adacore dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Mon, 28 Aug 2017 14:42:00 -0000
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--- Comment #6 from brobecker at adacore dot com ---
> This was a regression that appeared in 7.12. Isn't that enough to
> include it in an 8.0.1?
If the fix is accepted and deemed safe for backporting, then yes,
absolutely. We also typically give a bit of extra time to those
actively working on fixing a bug they would really like to be fixed
when they can show a plan to have the bug fixed relatively quickly.
However, since this isn't an 8.0 -> 8.0.1 regression, an 8.0.1 release
without the fix wouldn't make the situation worse for that particular
issue. So it's unfair in that case to block everyone else while hoping
someone fixes it.
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>From gdb-prs-return-21836-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 14:42:48 2017
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Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
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Date: Mon, 28 Aug 2017 14:51:00 -0000
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--- Comment #7 from jhb at FreeBSD dot org ---
To be clear, there is a fix that hass been posted multiple times to
gdb-patches@ since November of 2016, it is just waiting on a reviewer /
approver. Pedro agreed to the approach used in the patch when this issue was
first raised in a thread on gdb@ back in November (and asked me to then submit
the patch to gdb-patches@ for review). The issue here is that I can't get
anyone to approve the patch, not that a fix isn't available. I had marked it
as a milestone in the hopes of resolving the impasse.
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>From gdb-prs-return-21837-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 14:51:22 2017
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From: "joel.sherrill at oarcorp dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Mon, 28 Aug 2017 20:57:00 -0000
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--- Comment #8 from Joel Sherrill <joel.sherrill at oarcorp dot com> ---
I pinged Mike Frysinger about this PR since he was the one who commented on the
email thread and isn't on this PR.
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>From gdb-prs-return-21838-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 20:57:33 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/22021] New: Multi-arch exec fails with a remote target
Date: Mon, 28 Aug 2017 21:26:00 -0000
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Bug ID: 22021
Summary: Multi-arch exec fails with a remote target
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
Starting with gdb 8.0, this test fails:
$ make check RUNTESTFLAGS="--target_board=native-extended-gdbserver"
TESTS="gdb.multi/multi-arch-exec.exp"
...
# of unexpected failures 1
In gdb.log, when trying to "continue" across the exec:
(gdb) continue
Continuing.
Truncated register 50 in remote 'g' packet
Truncated register 50 in remote 'g' packet
More details in this thread:
https://sourceware.org/ml/gdb-patches/2017-08/threads.html#00488
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>From gdb-prs-return-21839-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Aug 28 21:26:20 2017
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Subject: [Bug exp/21827] Regression: gdb command lookup became
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |simon.marchi at ericsson dot com
Resolution|--- |FIXED
--- Comment #3 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=fd437cbc432d5421492a5b0e371750de104cce93
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>From gdb-prs-return-21840-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Aug 29 07:29:35 2017
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Subject: [Bug exp/21827] Regression: gdb command lookup became
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Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
Target Milestone|--- |8.0.1
--- Comment #4 from Joel Brobecker <brobecker at gnat dot com> ---
Also pushed to the gdb-8.0-branch in time for the 8.0.1 release. So adjusting
the target milestone accordingly.
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=95eeca3bccb6121c201183e21cb5fc39a6b711a2
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Tue, 29 Aug 2017 10:51:00 -0000
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--- Comment #3 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Hi Pedro,
To answer your first question, the failure looks like this:
print /d '\377'^M
$21 = -1^M
(gdb) PASS: gdb.base/sizeof.exp: get integer valueof "'\377'" (-1)
(...)
next^M
116 value = (int) (char) -1;^M
(gdb) p /d value^M
$25 = 255^M
(gdb) FAIL: gdb.base/sizeof.exp: check valueof "'\377'"
As to your second answer, I don't understand how the missing integer cast would
be a problem since both the get_integer_valueof and check_valueof are
consistent with one another, ie. they don't cast. Besides, my example shows
that printing an expression equal to 355 as an integer value gives -1 which
doesn't make sense. If (unsigned char) '\377' is equal to 355, then printing
this with /d should yield 355 as well since 355 can be represented as an
integer.
Best regards.
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Subject: [Bug gdb/22024] New: Internal error
Date: Tue, 29 Aug 2017 18:21:00 -0000
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Bug ID: 22024
Summary: Internal error
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A GDB internal error happened while I was investigating Emacs bug 28268 (see
"https://debbugs.gnu.org/cgi/bugreport.cgi?bug=28268").
My emacs image is compiled with "-O0 -g -ggdb". Note Emacs has its own
".gdbinit", see "http://git.savannah.gnu.org/cgit/emacs.git/tree/src/.gdbinit".
I ran Emacs under GDB in a Windows 7 command prompt, triggered the Emacs crash
in #28268 (visit git repo, open Git GUI via Magit by typing "C-x g ! g", close
Git GUI, type "C-g", Emacs crashes), then entered "thread apply all bt full".
The output:
Thread 1 received signal SIGTRAP, Trace/breakpoint trap.
0x000007fefcb831f3 in KERNELBASE!DebugBreak () from
C:\Windows\system32\KernelBase.dll
(gdb) thread apply all bt full
Thread 126 (Thread 3644.0x2bcc):
#0 0x0000000076e7bd7a in ntdll!ZwWaitForSingleObject () from
C:\Windows\SYSTEM32\ntdll.dll
No symbol table info available.
#1 0x000007fefcb510ac in WaitForSingleObjectEx () from
C:\Windows\system32\KernelBase.dll
No symbol table info available.
#2 0x000000040027c83b in reader_thread (arg=0x401bca480 <child_procs>) at
w32proc.c:1140
cp = 0x401bca480 <child_procs>
#3 0x0000000076d259cd in KERNEL32!BaseThreadInitThunk () from
C:\Windows\system32\kernel32.dll
No symbol table info available.
#4 0x0000000076e5a561 in ntdll!RtlUserThreadStart () from
C:\Windows\SYSTEM32\ntdll.dll
No symbol table info available.
#5 0x0000000000000000 in ?? ()
No symbol table info available.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
[Thread 3644.0x1a90 exited with code 2]
[Thread 3644.0x2bcc exited with code 2]
[Thread 3644.0x25d0 exited with code 2]
[Thread 3644.0x5e4 exited with code 2]
[Inferior 1 (process 3644) exited with code 02]
../../gdb-8.0/gdb/infcall.c:1154: internal-error: value*
call_function_by_hand_dummy(value*, int, valu
e**, void (*)(void*, int), void*): Assertion `tp->thread_fsm ==
&sm->thread_fsm' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
../../gdb-8.0/gdb/infcall.c:1154: internal-error: value*
call_function_by_hand_dummy(value*, int, valu
e**, void (*)(void*, int), void*): Assertion `tp->thread_fsm ==
&sm->thread_fsm' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
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Subject: [Bug gdb/22033] New: tell the user that the stack was exceeded
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Valgrind shows "==9392== Stack overflow in thread #1: can't grow stack to
0xffe801000"
A similar hint provided by gdb when the inferior segfaults would be very
useful.
Of course issuing "bt" shows a very large backtrace, but if there are many
functions involved in the infinite recursion, telling the actual issue might be
very difficult.
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Subject: [Bug gdb/22024] Internal error
Date: Wed, 30 Aug 2017 04:54:00 -0000
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--- Comment #1 from rcopley at gmail dot com ---
Apparently, this GDB internal error happens if GDB is run in a Windows 7 or
Windows 10 command prompt, and does not happen if GDB is run in an MSYS command
prompt.
Here is a more easily reproducible recipe, assuming you have installed MSYS2
and Git For Windows.
See the discussion at the Emacs bug report I mentioned before for the
background.
;; Clone the Emacs repository and check out a tree that
;; features the desired Emacs crash
git clone git://git.sv.gnu.org/emacs.git
git checkout -b gdb-bug-22024 b65cb981cc
;; Build Emacs in an MSYS2 mingw64 shell:
./autogen.sh
./configure --config-cache "CFLAGS=-O0 -g3 -ggdb"
make -j4 ;; Increase the "4"; but just "-j" will be painful.
;; Debug Emacs in a Windows command prompt:
gdb --quiet -ex run --args src/emacs.exe -Q -eval \
"(start-process \"git gui\" \"*git gui*\" \
\"C:\\\\Program Files\\\\Git\\\\cmd\\\\Git-GUI.exe\")"
;; In Emacs, type "C-g" several times until Emacs shows
;; its abort dialog. Click "Yes" to make Emacs SIGINT
;; itself.
;; In GDB:
thread apply all bt
;; GDB crashes.
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Wed, 30 Aug 2017 04:56:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com,
| |tromey at sourceware dot org
--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Worth mentioning: I've also noticed this test failing on BuildBot. According
to the logs, the first commit that introduced this regression is:
commit d6382fffde99214ce4aee99a208ddb703c647008
Author: Tom Tromey <tom@tromey.com>
Date: Tue Jul 11 06:40:40 2017 -0600
Fix two regressions in scalar printing
I'm adding Tom to the Cc list of this bug just in case.
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Wed, 30 Aug 2017 14:09:00 -0000
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--- Comment #5 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Ops, sorry, a brain fart prevented me from seeing that Thomas had already found
the commit that introduced the regression. Well, at least this served to prove
that one can reasonably rely on BuildBot! ;)
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Wed, 30 Aug 2017 15:14:00 -0000
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
(In reply to Thomas Preud'homme from comment #3)
> To answer your first question, the failure looks like this:
>
> print /d '\377'^M
> $21 = -1^M
> (gdb) PASS: gdb.base/sizeof.exp: get integer valueof "'\377'" (-1)
>
> (...)
>
> next^M
> 116 value = (int) (char) -1;^M
> (gdb) p /d value^M
> $25 = 255^M
> (gdb) FAIL: gdb.base/sizeof.exp: check valueof "'\377'"
>
>
> As to your second answer, I don't understand how the missing integer cast
> would be a problem since both the get_integer_valueof and check_valueof are
> consistent with one another, ie. they don't cast. Besides, my example shows
> that printing an expression equal to 355 as an integer value gives -1 which
> doesn't make sense. If (unsigned char) '\377' is equal to 355, then printing
> this with /d should yield 355 as well since 355 can be represented as an
> integer.
Depends on the size of the "integer". If it were an "int", then yes. But
the "integer" in question is a "char", which has sizeof == 1.
So "p /d (unsigned char) 0xff" is the same as "p (signed char) 0xff", like:
"p /d (unsigned char) 0xff"
==> "p (signed typeof ((unsigned char) 0xff) 0xff
=> -1
Similarly:
"p /d (unsigned int) 0xffffffff" ==> -1
"p /d (unsigned short) 0xffff" ==> -1 [unsigned short]
"p /d (unsigned long long) 0xffffffffffffffff" ==> -1
I think that's a reasonable behavior, that mirrors the /u behavior naturally.
Like:
(gdb) p /u 0xffffffffffffffff
$1 = 18446744073709551615
and not:
(gdb) p /u 0xffffffffffffffff
$2 = 4294967295
(which would be what you'd get if "/u == interpret as unsigned integer" meant
interpret as "unsigned int".)
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Wed, 30 Aug 2017 19:12:00 -0000
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--- Comment #7 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Pedro Alves from comment #6)
> (In reply to Thomas Preud'homme from comment #3)
> > To answer your first question, the failure looks like this:
> >
> > print /d '\377'^M
> > $21 = -1^M
> > (gdb) PASS: gdb.base/sizeof.exp: get integer valueof "'\377'" (-1)
> >
> > (...)
> >
> > next^M
> > 116 value = (int) (char) -1;^M
> > (gdb) p /d value^M
> > $25 = 255^M
> > (gdb) FAIL: gdb.base/sizeof.exp: check valueof "'\377'"
> >
> >
> > As to your second answer, I don't understand how the missing integer cast
> > would be a problem since both the get_integer_valueof and check_valueof are
> > consistent with one another, ie. they don't cast. Besides, my example shows
> > that printing an expression equal to 355 as an integer value gives -1 which
> > doesn't make sense. If (unsigned char) '\377' is equal to 355, then printing
> > this with /d should yield 355 as well since 355 can be represented as an
> > integer.
>
> Depends on the size of the "integer". If it were an "int", then yes. But
> the "integer" in question is a "char", which has sizeof == 1.
> So "p /d (unsigned char) 0xff" is the same as "p (signed char) 0xff", like:
> "p /d (unsigned char) 0xff"
> ==> "p (signed typeof ((unsigned char) 0xff) 0xff
> => -1
Oh I see, didn't realize it was dependent on the type of the expression. Thanks
for the explanation.
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Subject: [Bug gdb/22046] New: Regression on older kernels for T (stopped)
processes
Date: Wed, 30 Aug 2017 19:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22046
Bug ID: 22046
Summary: Regression on older kernels for T (stopped) processes
Product: gdb
Version: 8.0
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jan.kratochvil at redhat dot com
Target Milestone: ---
On <=RHEL6 hosts Fedora/RHEL GDB started to 'kill -STOP' all processes it
detached. Even those not originally T-stopped. This is a Fedora-specific
patch which is based on upstream GDB's PROC_STATE_STOPPED state.
I believe (I did not verify) this patch did regress it:
commit d617208bb06bd461b52ce041d89f7127e3044762
Author: Pedro Alves <palves@redhat.com>
Date: Mon Jul 25 12:42:17 2016 +0100
linux-procfs: Introduce enum proc_state
As originally there was strstr() but now there is strcmp() and so the missing
trailing '\n' no longer matches.
The Bug was found by Michal Kolar.
Reproducibility:
$ gdb -p $PID
(gdb) quit
$ ...
Actual results:
===
RHEL6.9 x86_64 # scl enable devtoolset-7 bash
RHEL6.9 x86_64 # which gdb
/opt/rh/devtoolset-7/root/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24737 pts/0 S+ 0:00 /bin/sleep 4
24737 pts/0 T+ 0:00 /bin/sleep 4
RHEL6.9 x86_64 #
===
Expected results:
===
RHEL6.9 x86_64 # which gdb
/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24708 pts/0 S+ 0:00 /bin/sleep 4
24708 pts/0 S+ 0:00 /bin/sleep 4
./testcase.sh: line 20: kill: (24708) - No such process
RHEL6.9 x86_64 #
===
Tested: 5b86dbf4549af98c4428da4764182e03f22c58ab
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Subject: [Bug gdb/22046] Regression on older kernels for T (stopped)
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Subject: [Bug gdb/22046] Regression on older kernels for T (stopped)
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--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[patch+8.0.1] Fix T-stopped detach regression on old kernels
https://sourceware.org/ml/gdb-patches/2017-08/msg00532.html
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
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Subject: [Bug gdb/22056] New: Breakpoint conditions takes precedence over
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Bug ID: 22056
Summary: Breakpoint conditions takes precedence over ignore
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Created attachment 10382
--> https://sourceware.org/bugzilla/attachment.cgi?id=10382&action=edit
Test case
In the documentation node gdb → Stopping → Breakpoints → Condition it says:
If a breakpoint has a positive ignore count and a condition, the
condition is not checked. Once the ignore count reaches zero, GDB
resumes checking the condition.
That does not seem to reflect the actual behaviour. GDB does not seem to
decrement the ignore count unless the condition is met.
To illustrate, download the attached test case c.c, and then do
mimmi$$ cc -g c.c -o c
mimmi$$ gdb c
GNU gdb (GDB) Fedora 8.0-24.fc26
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from c...done.
(gdb) b f if x<100
Breakpoint 1 at 0x40048e: file c.c, line 5.
(gdb) r
Starting program: /home/göran/c
Missing separate debuginfos, use: dnf debuginfo-install
glibc-2.25-7.fc26.x86_64
Breakpoint 1, f (x=1) at c.c:5
5 i += x;
(gdb) continue 3
Will ignore next 2 crossings of breakpoint 1. Continuing.
Breakpoint 1, f (x=4) at c.c:5
5 i += x;
Behaviour:
When doing "continue 3", I would expect the calls of "f(100)" on lines 11 and
12 to be ignored. The condition is false, but the documentation says that
should not be checked as long as there is an ignore count. Then the condition
makes the execution pass the third call of "f(100)" too, and execution should
stop when reaching the call of "f(2)" on line 14.
But as can be seen, the execution isn't stopped until the call of "f(4)" on
line 16. That makes me believe the ignore count is only decremented when the
condition is met, that is for the calls of "f(2)" and "f(3)".
It isn't obvious to me if the implementation or the documentation is "correct".
I guess changing the documentation to agree with the implementation would
cause the least surprises out ther.
Environment:
Fedora Linux
gdb-8.0-24.fc26.x86_64
(Side note: I believe I reported this to the mailing list a long time ago. I
guess that report was lost.)
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To: gdb-prs@sourceware.org
Subject: [Bug symtab/21695] Loss of line info
Date: Fri, 01 Sep 2017 04:17:00 -0000
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Stephen Kim <stephen.kim at oracle dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |stephen.kim at oracle dot com
--- Comment #1 from Stephen Kim <stephen.kim at oracle dot com> ---
My employer assigned a few engineers to GNU toolchains so that we make some
contribution to the projects. I am one of the engineers, and would like to
start with this bug. As it does not seem that I can assign this bug to myself,
I am leaving this comment here. I would like to take a look at this bug, and
will see if this is in my area or not. If it is, I will do my best to fix this
bug.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22046] Regression on older kernels for T (stopped)
processes
Date: Fri, 01 Sep 2017 04:19:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jan Kratochvil <jkratoch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5c811d30d12b6f7c6c6f4ce6d03408d987154548
commit 5c811d30d12b6f7c6c6f4ce6d03408d987154548
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Fri Sep 1 06:13:40 2017 +0200
PR gdb/22046: Fix T-stopped detach regression on old Linux kernels
On <=RHEL6 hosts Fedora/RHEL GDB started to 'kill -STOP' all processes it
detached. Even those not originally T-stopped. This is a Fedora-specific
patch which is based on upstream GDB's PROC_STATE_STOPPED state.
I believe (I did not verify) this patch did regress it:
commit d617208bb06bd461b52ce041d89f7127e3044762
Author: Pedro Alves <palves@redhat.com>
Date: Mon Jul 25 12:42:17 2016 +0100
linux-procfs: Introduce enum proc_state
As originally there was strstr() but now there is strcmp() and so the
missing
trailing '\n' no longer matches.
The Bug was found by Michal Kolar.
Reproducibility:
$ gdb -p $PID
(gdb) quit
$ ...
Actual results:
===
RHEL6.9 x86_64 # scl enable devtoolset-7 bash
RHEL6.9 x86_64 # which gdb
/opt/rh/devtoolset-7/root/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24737 pts/0 S+ 0:00 /bin/sleep 4
24737 pts/0 T+ 0:00 /bin/sleep 4
RHEL6.9 x86_64 #
===
Expected results:
===
RHEL6.9 x86_64 # which gdb
/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24708 pts/0 S+ 0:00 /bin/sleep 4
24708 pts/0 S+ 0:00 /bin/sleep 4
./testcase.sh: line 20: kill: (24708) - No such process
RHEL6.9 x86_64 #
===
gdb/ChangeLog
2017-09-01 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/22046
* nat/linux-procfs.c (parse_proc_status_state): Fix PROC_STATE_STOPPED
detection.
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Subject: [Bug gdb/22046] Regression on older kernels for T (stopped)
processes
Date: Fri, 01 Sep 2017 04:23:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Jan Kratochvil
<jkratoch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c247e38d78a98f85066e4a61032ee742d08a0579
commit c247e38d78a98f85066e4a61032ee742d08a0579
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date: Fri Sep 1 06:13:40 2017 +0200
PR gdb/22046: Fix T-stopped detach regression on old Linux kernels
On <=RHEL6 hosts Fedora/RHEL GDB started to 'kill -STOP' all processes it
detached. Even those not originally T-stopped. This is a Fedora-specific
patch which is based on upstream GDB's PROC_STATE_STOPPED state.
I believe (I did not verify) this patch did regress it:
commit d617208bb06bd461b52ce041d89f7127e3044762
Author: Pedro Alves <palves@redhat.com>
Date: Mon Jul 25 12:42:17 2016 +0100
linux-procfs: Introduce enum proc_state
As originally there was strstr() but now there is strcmp() and so the
missing
trailing '\n' no longer matches.
The Bug was found by Michal Kolar.
Reproducibility:
$ gdb -p $PID
(gdb) quit
$ ...
Actual results:
===
RHEL6.9 x86_64 # scl enable devtoolset-7 bash
RHEL6.9 x86_64 # which gdb
/opt/rh/devtoolset-7/root/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24737 pts/0 S+ 0:00 /bin/sleep 4
24737 pts/0 T+ 0:00 /bin/sleep 4
RHEL6.9 x86_64 #
===
Expected results:
===
RHEL6.9 x86_64 # which gdb
/usr/bin/gdb
RHEL6.9 x86_64 # ./testcase.sh
24708 pts/0 S+ 0:00 /bin/sleep 4
24708 pts/0 S+ 0:00 /bin/sleep 4
./testcase.sh: line 20: kill: (24708) - No such process
RHEL6.9 x86_64 #
===
gdb/ChangeLog
2017-09-01 Jan Kratochvil <jan.kratochvil@redhat.com>
PR gdb/22046
* nat/linux-procfs.c (parse_proc_status_state): Fix PROC_STATE_STOPPED
detection.
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Subject: [Bug gdb/22046] Regression on older kernels for T (stopped)
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Date: Fri, 01 Sep 2017 05:11:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Fixed.
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From: "anwilli5 at ncsu dot edu" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tui/9765] Scrolling to end of program in asm layout is broken
Date: Fri, 01 Sep 2017 09:38:00 -0000
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anwilli5 at ncsu dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |anwilli5 at ncsu dot edu
--- Comment #3 from anwilli5 at ncsu dot edu ---
This happens for me as well (with gdb 8.0) except that gdb aborts with error
message "(gdb) terminate called after throwing an instance of
'gdb_exception_RETURN_MASK_ERROR'" instead of just getting into a bad state as
described by Pedro.
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/21695] Loss of line info
Date: Fri, 01 Sep 2017 12:13:00 -0000
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--- Comment #2 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Stephen Kim from comment #1)
> My employer assigned a few engineers to GNU toolchains so that we make some
> contribution to the projects. I am one of the engineers, and would like to
> start with this bug. As it does not seem that I can assign this bug to
> myself, I am leaving this comment here. I would like to take a look at this
> bug, and will see if this is in my area or not. If it is, I will do my best
> to fix this bug.
Hi Stephen,
First of all thank you for proposing your help here, that's much appreciated.
You'll find more info on how to contribute at [1]. As to assigning bugzilla
ticket, I believe this is only possible once you get commit approval, at least
that's how it work in GCC bugzilla.
[1] https://sourceware.org/gdb/contribute/
Best regards.
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Subject: [Bug tui/9765] Scrolling to end of program in asm layout is broken
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
Sounds like we're letting C++ exceptions cross ncurses (in this case the memory
error exception). We can't, because it's a C library that may have not been
built with unwind info. [we had a similar problem with readline].
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Subject: [Bug gdb/22063] New: infrun.c:5570: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed.
Date: Fri, 01 Sep 2017 15:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22063
Bug ID: 22063
Summary: infrun.c:5570: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed.
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: koutheir at gmail dot com
Target Milestone: ---
New UI allocated
GNU gdb (GDB) 8.0
[copyright-notice-removed]
(gdb) 0x0000007fb7fd3d00 in _start () from
[path]/sysroots/aarch64-poky-linux/lib/ld-linux-aarch64.so.1
Temporary breakpoint 4, main (argc=13, argv=0x7ffffffa88) at
[path]/jdk/src/share/bin/main.c:95
95 int margc = -1;
sha
Reading symbols from [path]/jdk/lib/aarch64/jli/libjli.so...done.
Reading symbols from [path]/sysroots/aarch64-poky-linux/lib/libc.so.6...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/.debug/libc-2.24.so...done.
Reading symbols from [path]/sysroots/aarch64-poky-linux/lib/libdl.so.2...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/.debug/libdl-2.24.so...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/libpthread.so.0...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/.debug/libpthread-2.24.so...done.
(gdb) c
Continuing.
Breakpoint 1, JLI_Launch (argc=0, argv=0x411118, jargc=1, jargv=0x0,
appclassc=1, appclassv=0x0, fullversion=0x400ab0 "[data-removed]",
dotversion=0x400aa8 "1.8", pname=0x400a90 "java", lname=0x400a98 "openjdk",
javaargs=0 '\000', cpwildcard=1 '\001', javaw=0 '\000', ergo=0) at
[path]/jdk/src/share/bin/java.c:304
304 return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
(gdb) sha
Reading symbols from
[path]/hotspot/linux_aarch64_compiler1/debug/libjvm.so...done.
Reading symbols from
[path]/hotspot/linux_aarch64_compiler1/debug/libjvm.debuginfo...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/usr/lib/libstdc++.so.6...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/usr/lib/.debug/libstdc++.so.6.0.22...done.
Reading symbols from [path]/sysroots/aarch64-poky-linux/lib/libm.so.6...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/.debug/libm-2.24.so...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/libgcc_s.so.1...done.
Reading symbols from
[path]/sysroots/aarch64-poky-linux/lib/.debug/libgcc_s.so.1...done.
(gdb) c
Continuing.
[New Thread 3445.3448]
infrun.c:5570: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
infrun.c:5570: internal-error: int finish_step_over(execution_control_state*):
Assertion `ecs->event_thread->control.trap_expected' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Command aborted.
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Subject: [Bug gdb/22063] infrun.c:5570: internal-error: int
finish_step_over(execution_control_state*): Assertion
`ecs->event_thread->control.trap_expected' failed.
Date: Sun, 03 Sep 2017 00:14:00 -0000
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Koutheir Attouchi <koutheir at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |koutheir at gmail dot com
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>From gdb-prs-return-21864-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Sep 03 00:14:23 2017
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From: "Hsiangkai at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/21698] Stepping from python interface broken?
Date: Sun, 03 Sep 2017 00:34:00 -0000
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Hsiangkai Wang <Hsiangkai at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Hsiangkai at gmail dot com
--- Comment #1 from Hsiangkai Wang <Hsiangkai at gmail dot com> ---
Currently, current_ui->prompt_state will keep PROMPTED value under python
interface. Synchronous commands will behave like asynchronous commands
and GDB will raise an exception while checking thread state before
executing synchronouse commands in ensure_not_running(). Initialize
current_ui->prompt_state to PROMPT_NEEDED in execute_gdb_command() to
ensure synchronous commands will complete before next command under python
interface.
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>From gdb-prs-return-21865-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Sep 03 00:34:22 2017
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Subject: [Bug python/21698] Stepping from python interface broken?
Date: Sun, 03 Sep 2017 17:51:00 -0000
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--- Comment #2 from Hsiangkai Wang <Hsiangkai at gmail dot com> ---
I have prepared a patch for this bug. However, I am not sure is it reasonable
to change prompt_state in execute_gdb_command() or not. Any comments?
---
gdb/python/python.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gdb/python/python.c b/gdb/python/python.c
index c53e10f..49b5eff 100644
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -589,6 +589,7 @@ execute_gdb_command (PyObject *self, PyObject *args,
PyObject *kw)
struct interp *interp;
scoped_restore save_async = make_scoped_restore (¤t_ui->async, 0);
+ current_ui->prompt_state = PROMPT_NEEDED;
scoped_restore save_uiout = make_scoped_restore (¤t_uiout);
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21969] watchpoint break not triggered on reverse
continue
Date: Sun, 03 Sep 2017 18:51:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-09-03
CC| |simon.marchi at ericsson dot com
Ever confirmed|0 |1
--- Comment #1 from Simon Marchi <simon.marchi at ericsson dot com> ---
Thanks for reporting. I see the same behavior, hardware watchpoints don't
trigger in reverse execution or in replay. As a workaround, you can use "set
can-use-hw-watchpoints 0" to force the use of software watchpoints.
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>From gdb-prs-return-21867-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Sep 03 18:51:07 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/21506] python execute(to_string=True) no longer captures
certain output since e7ea3ec7
Date: Sun, 03 Sep 2017 18:54:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-09-03
CC| |tromey at sourceware dot org
Ever confirmed|0 |1
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
I've also noticed this when using my python gdb gui --
the gui uses to_string=True for some commands to suppress output,
but gdb still emits the output anyway now.
For example in my case it happens in tui_on_normal_stop, which
calls print_stop_event for each UI.
I'm not sure what can be done about this. if nothing, it's worth
noting that the output is sub-par as well:
(top) 30 args.argv = argv;
31 args.interpreter_p = INTERP_CONSOLE;
... that is, it doesn't try to erase the prompt first.
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
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--- Comment #8 from Tom Tromey <tromey at sourceware dot org> ---
Created attachment 10391
--> https://sourceware.org/bugzilla/attachment.cgi?id=10391&action=edit
patch
Can you try this patch?
It was hard to tell from the buildbot if this worked.
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Mon, 04 Sep 2017 13:21:00 -0000
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--- Comment #9 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Kind of "out of topic" here, but do you think it'd make sense to also list FAIL
-> PASS on buildbot? I think it'd make it easier to spot regression fixes.
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Subject: [Bug tdep/17346] i386 record: Missing AVX
Date: Mon, 04 Sep 2017 15:09:00 -0000
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Andy Price <anprice at redhat dot com> changed:
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug record/22081] New: i386 record: doesn't support syscall number
318 = getrandom
Date: Tue, 05 Sep 2017 03:49:00 -0000
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Bug ID: 22081
Summary: i386 record: doesn't support syscall number 318 =
getrandom
Product: gdb
Version: 8.0
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$ gdb -ex 'set env LD_BIND_NOW=1' -ex start -ex record -ex c --args python3
Process record and replay target doesn't support syscall number 318
Process record: failed to record execution log.
Program stopped.
0x00007ffff6ba41a1 in getrandom (buffer=0x7ffff7dd5ba0 <_Py_HashSecret>,
length=24, flags=1)
at ../sysdeps/unix/sysv/linux/getrandom.c:30
30 return SYSCALL_CANCEL (getrandom, buffer, length, flags);
Fedora 26 x86_64
gdb-8.0-24.fc26.x86_64
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Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 05 Sep 2017 10:53:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by John Baldwin <jhb@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=625ce09c1cfb557725310f602ee66ac1475d780e
commit 625ce09c1cfb557725310f602ee66ac1475d780e
Author: John Baldwin <jhb@FreeBSD.org>
Date: Mon Sep 4 19:53:50 2017 -0700
Define an error function in the PPC simulator library.
Previously this used the error function from GDB directly when linked
against GDB instead of the error method in the host callbacks
structure. This was exposed via a link error when GDB was converted
to C++. The error function invokes the error callback similar to
sim_io_error.
Note that there are also error functions in sim/ppc/main.c and
sim/ppc/misc.c. The ppc libsim.a expects each consumer to provide
several symbols used by the library including "error". sim-calls.c
provides these symbols when the library is linked into gdb. The dgen,
igen, tmp-filter, tmp-ld-decode, tmp-ld-cache, and tmp-ld-insn programs
use the functions from misc.c. psim uses the functions from main.c.
sim/ppc/ChangeLog:
PR sim/20863
* sim_calls.c (error): New function.
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From: "dudu.arbel at ilrd dot co.il" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug compile/22084] New: unexpected padding in a struct
Date: Tue, 05 Sep 2017 11:43:00 -0000
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Bug ID: 22084
Summary: unexpected padding in a struct
Product: gdb
Version: unknown
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There is an unexpected padding (of 2 bytes) between x and y in the following
struct.
This causes it to be of size 12 bytes, although 8 bytes should be enough.
This behavior seems inconsistent to many other examples (e.g - reducing x size
to 15, eliminates the padding)
typedef struct {
unsigned int x:16;
unsigned int y:17;
unsigned short z;
} XXX;
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 05 Sep 2017 11:43:00 -0000
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--- Comment #10 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by John Baldwin
<jhb@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6854bcdfba43dd3a2058565bbf85868c9914bf39
commit 6854bcdfba43dd3a2058565bbf85868c9914bf39
Author: John Baldwin <jhb@FreeBSD.org>
Date: Mon Sep 4 19:53:50 2017 -0700
Define an error function in the PPC simulator library.
Previously this used the error function from GDB directly when linked
against GDB instead of the error method in the host callbacks
structure. This was exposed via a link error when GDB was converted
to C++. The error function invokes the error callback similar to
sim_io_error.
Note that there are also error functions in sim/ppc/main.c and
sim/ppc/misc.c. The ppc libsim.a expects each consumer to provide
several symbols used by the library including "error". sim-calls.c
provides these symbols when the library is linked into gdb. The dgen,
igen, tmp-filter, tmp-ld-decode, tmp-ld-cache, and tmp-ld-insn programs
use the functions from misc.c. psim uses the functions from main.c.
sim/ppc/ChangeLog:
PR sim/20863
* sim_calls.c (error): New function.
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Subject: [Bug sim/20863] gdb-7.12 powerpc-rtems4.12-gdb does not build on
FreeBSD.
Date: Tue, 05 Sep 2017 11:45:00 -0000
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jhb at FreeBSD dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.0.1
--- Comment #11 from jhb at FreeBSD dot org ---
Fix merged to 8.0 branch for 8.0.1.
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Subject: [Bug python/21698] Stepping from python interface broken?
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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CC| |qiyao at gcc dot gnu.org
--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Hsiangkai Wang from comment #2)
> I have prepared a patch for this bug. However, I am not sure is it
> reasonable to change prompt_state in execute_gdb_command() or not. Any
> comments?
gdb-patches@sourceware.org is the right place to discuss patches, so post
your patch there. You can ask something you are not sure about there.
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Subject: [Bug compile/22084] unexpected padding in a struct
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Can you provide more information? like how do you "compile" the example? Note
that different ABIs have different requirements on padding.
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From: "dudu.arbel at ilrd dot co.il" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug compile/22084] unexpected padding in a struct
Date: Tue, 05 Sep 2017 13:20:00 -0000
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--- Comment #2 from Dudu <dudu.arbel at ilrd dot co.il> ---
I use gcc.
the whole file to compile is:
#include "stdio.h"
typedef struct {
unsigned int x:16;
unsigned int y:17;
unsigned short z;
} XXX;
int main()
{
XXX x = {0};
x.x = 65536-1;
x.y = 2*65536-1;
x.z = 65536-1;
char *p = (char*)&x;
printf("1st byte is=%d\n", *p++);
printf("2nd byte is=%d\n", *p++);
printf("3rd byte is=%d\n", *p++);
printf("\nsize of xxx=%ld\n", sizeof(XXX));
}
the output is: -1 (ok), -1 (ok), 0 (!? - wrong padding)
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Subject: [Bug python/21698] Stepping from python interface broken?
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--- Comment #4 from Hsiangkai Wang <Hsiangkai at gmail dot com> ---
(In reply to Yao Qi from comment #3)
> (In reply to Hsiangkai Wang from comment #2)
> > I have prepared a patch for this bug. However, I am not sure is it
> > reasonable to change prompt_state in execute_gdb_command() or not. Any
> > comments?
>
> gdb-patches@sourceware.org is the right place to discuss patches, so post
> your patch there. You can ask something you are not sure about there.
Thanks for your reminding. I have sent a patch to gdb-patches@sourceware.org
for review.
https://patchwork.sourceware.org/patch/22595/
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Tue, 05 Sep 2017 15:54:00 -0000
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--- Comment #10 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Tom Tromey from comment #8)
> Created attachment 10391 [details]
> patch
>
> Can you try this patch?
> It was hard to tell from the buildbot if this worked.
Yep, works.
Best regards.
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Subject: [Bug compile/22084] unexpected padding in a struct
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
It is definitely not a GDB bug. If you think GCC is wrong, report it gcc
bugzilla.
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Subject: [Bug symtab/21695] Loss of line info
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Stephen, I've given editbugs privileges to your account and to the accounts of
a a couple of your colleagues that I recognized as contributing upstream
recently. Welcome on board!
Another URL to look at is:
https://sourceware.org/gdb/wiki/ContributionChecklist
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Subject: [Bug testsuite/22091] New: PASS->FAIL: gdb.arch/thumb2-it.exp
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Bug ID: 22091
Summary: PASS->FAIL: gdb.arch/thumb2-it.exp
Product: gdb
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Hi,
Many gdb.arch/thumb2-it.exp tests regressed after
7022349d5c86bae74b49225515f42d2e221bd368. As one would expect, errors are of
the form:
'it_1' has unknown return type; cast the call to its declared return type
(gdb) FAIL: gdb.arch/thumb2-it.exp: it_1, call
stepi
41 bx lr @ Thumb-2 OK
(gdb) FAIL: gdb.arch/thumb2-it.exp: it_1, stepi 0
continue
Continuing.
[Inferior 1 (Remote target) exited normally]
I guess either the assembly should be enhanced with some debug info or the exp
file changed to cast calls as suggested.
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https://sourceware.org/bugzilla/show_bug.cgi?id=22092
Bug ID: 22092
Summary: GdbServer fails to build for host "aarch64-linux-gnu"
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: paveld500 at gmail dot com
Target Milestone: ---
Created attachment 10398
--> https://sourceware.org/bugzilla/attachment.cgi?id=10398&action=edit
make error log
1. Which version of gdb is used?
gdb 8.0
2. How to reproduce the issue?
1. Got to gdb-8.0/gdb/gdbsrver/ folder
2. execute command in bash: "./configure --host=aarch64-linux-gnu
CC=aarch64-linux-gnu-gcc"
3. Start "make"
4. Receive the following output: See attachment.
3. What version of aarch64-linux-gnu-gcc was used?
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-cross/aarch64-linux-gnu/6/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
6.3.0-12ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-6/README.Bugs
--enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-6 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu
--enable-libstdcxx-debug --enable-libstdcxx-time=yes
--with-default-libstdcxx-abi=new --enable-gnu-unique-object
--disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-6-arm64-cross/jre
--enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-6-arm64-cross
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-6-arm64-cross
--with-arch-directory=aarch64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--disable-libgcj --enable-multiarch --enable-fix-cortex-a53-843419
--disable-werror --enable-checking=release --build=x86_64-linux-gnu
--host=x86_64-linux-gnu --target=aarch64-linux-gnu
--program-prefix=aarch64-linux-gnu- --includedir=/usr/aarch64-linux-gnu/include
Thread model: posix
gcc version 6.3.0 20170406 (Ubuntu/Linaro 6.3.0-12ubuntu2)
Expected behavior: no errors and build passes.
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From: "paveld500 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22092] GdbServer fails to build for host
"aarch64-linux-gnu"
Date: Wed, 06 Sep 2017 13:02:00 -0000
X-Bugzilla-Reason: CC
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X-Bugzilla-Component: gdb
X-Bugzilla-Version: 8.0
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: paveld500 at gmail dot com
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P2
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Message-ID: <bug-22092-4717-11YBNxaIH3@http.sourceware.org/bugzilla/>
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https://sourceware.org/bugzilla/show_bug.cgi?id=22092
--- Comment #1 from pavel <paveld500 at gmail dot com> ---
Output of configure command:
checking whether to enable maintainer-specific portions of Makefiles... no
checking for aarch64-linux-gnu-gcc... aarch64-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether aarch64-linux-gnu-gcc accepts -g... yes
checking for aarch64-linux-gnu-gcc option to accept ISO C89... none needed
checking for aarch64-linux-gnu-g++... no
checking for aarch64-linux-gnu-c++... no
checking for aarch64-linux-gnu-gpp... no
checking for aarch64-linux-gnu-aCC... no
checking for aarch64-linux-gnu-CC... no
checking for aarch64-linux-gnu-cxx... no
checking for aarch64-linux-gnu-cc++... no
checking for aarch64-linux-gnu-cl.exe... no
checking for aarch64-linux-gnu-FCC... no
checking for aarch64-linux-gnu-KCC... no
checking for aarch64-linux-gnu-RCC... no
checking for aarch64-linux-gnu-xlC_r... no
checking for aarch64-linux-gnu-xlC... no
checking for g++... g++
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking how to run the C preprocessor... aarch64-linux-gnu-gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking build system type... x86_64-pc-linux-gnu
checking host system type... aarch64-unknown-linux-gnu
checking target system type... aarch64-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking for aarch64-linux-gnu-ar... aarch64-linux-gnu-ar
checking for aarch64-linux-gnu-ranlib... aarch64-linux-gnu-ranlib
checking whether g++ supports C++11 features by default... yes
checking for ANSI C header files... (cached) yes
checking dependency style of aarch64-linux-gnu-gcc... gcc3
=== configuring in build-gnulib-gdbserver
(/home/pavel/harman/gdb-8.0/gdb/gdbserver/build-gnulib-gdbserver)
configure: running /bin/bash .././../gnulib/configure --disable-option-checking
'--prefix=NONE' '--host=aarch64-linux-gnu' 'CC=aarch64-linux-gnu-gcc'
'host_alias=aarch64-linux-gnu' --cache-file=/dev/null --srcdir=.././../gnulib
checking whether to enable maintainer-specific portions of Makefiles... no
checking for aarch64-linux-gnu-gcc... aarch64-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether aarch64-linux-gnu-gcc accepts -g... yes
checking for aarch64-linux-gnu-gcc option to accept ISO C89... none needed
checking how to run the C preprocessor... aarch64-linux-gnu-gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking whether _XOPEN_SOURCE should be defined... no
checking for Minix Amsterdam compiler... no
checking for aarch64-linux-gnu-ar... aarch64-linux-gnu-ar
checking for aarch64-linux-gnu-ranlib... aarch64-linux-gnu-ranlib
checking build system type... x86_64-pc-linux-gnu
checking host system type... aarch64-unknown-linux-gnu
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking for aarch64-linux-gnu-gcc... (cached) aarch64-linux-gnu-gcc
checking whether we are using the GNU C compiler... (cached) yes
checking whether aarch64-linux-gnu-gcc accepts -g... (cached) yes
checking for aarch64-linux-gnu-gcc option to accept ISO C89... (cached) none
needed
checking target system type... aarch64-unknown-linux-gnu
checking for working alloca.h... yes
checking for alloca... yes
checking for canonicalize_file_name... yes
checking for getcwd... yes
checking for readlink... yes
checking for realpath... yes
checking for btowc... yes
checking for isblank... yes
checking for iswctype... yes
checking for mbsrtowcs... yes
checking for mempcpy... yes
checking for wmemchr... yes
checking for wmemcpy... yes
checking for wmempcpy... yes
checking for gettimeofday... yes
checking for symlink... yes
checking for lstat... yes
checking for mbsinit... yes
checking for mbrtowc... yes
checking for mprotect... yes
checking for link... yes
checking for iswcntrl... yes
checking whether // is distinct from /... unknown, assuming no
checking whether realpath works... guessing yes
checking for sys/param.h... yes
checking for dirent.h... yes
checking for wctype.h... yes
checking for sys/time.h... yes
checking for sys/socket.h... yes
checking for limits.h... yes
checking for wchar.h... yes
checking for stdint.h... (cached) yes
checking for inttypes.h... (cached) yes
checking for unistd.h... (cached) yes
checking for math.h... yes
checking for sys/mman.h... yes
checking for sys/stat.h... (cached) yes
checking for features.h... yes
checking whether the preprocessor supports include_next... yes
checking whether system header files limit the line length... no
checking for complete errno.h... yes
checking for mbstate_t... yes
checking whether frexp() can be used without linking with libm... yes
checking whether alarm is declared... yes
checking whether long double and double are the same... no
checking for C/C++ restrict keyword... __restrict
checking for struct timeval... yes
checking for wide-enough struct timeval.tv_sec member... yes
checking whether gettimeofday is declared without a macro... yes
checking whether limits.h has ULLONG_WIDTH etc.... no
checking for unsigned long long int... yes
checking for long long int... yes
checking whether stdint.h conforms to C99... yes
checking whether stdint.h predates C++11... no
checking whether stdint.h has UINTMAX_WIDTH etc.... no
checking whether imaxabs is declared without a macro... yes
checking whether imaxdiv is declared without a macro... yes
checking whether strtoimax is declared without a macro... yes
checking whether strtoumax is declared without a macro... yes
checking for inttypes.h... (cached) yes
checking whether the inttypes.h PRIxNN macros are broken... no
checking where to find the exponent in a 'double'... word 1 bit 20
checking whether byte ordering is bigendian... (cached) no
checking for nl_langinfo and CODESET... yes
checking for working fcntl.h... cross-compiling
checking whether getc_unlocked is declared... yes
checking whether we are using the GNU C Library >= 2.1 or uClibc... yes
checking whether lstat correctly handles trailing slash... guessing yes
checking whether malloc, realloc, calloc are POSIX compliant... yes
checking for stdlib.h... (cached) yes
checking for GNU libc compatible malloc... yes
checking for a traditional japanese locale... none
checking for a transitional chinese locale... none
checking for a french Unicode locale... none
checking for a traditional french locale... none
checking for mmap... yes
checking for MAP_ANONYMOUS... yes
checking whether memchr works... guessing no
checking whether memmem is declared... yes
checking for memmem... yes
checking whether memmem works... guessing yes
checking for sigset_t... yes
checking for pid_t... yes
checking for uid_t in sys/types.h... yes
checking for stdbool.h that conforms to C99... yes
checking for _Bool... yes
checking for wchar_t... yes
checking whether ffsl is declared without a macro... yes
checking whether ffsll is declared without a macro... yes
checking whether memmem is declared without a macro... yes
checking whether mempcpy is declared without a macro... yes
checking whether memrchr is declared without a macro... yes
checking whether rawmemchr is declared without a macro... yes
checking whether stpcpy is declared without a macro... yes
checking whether stpncpy is declared without a macro... yes
checking whether strchrnul is declared without a macro... yes
checking whether strdup is declared without a macro... yes
checking whether strncat is declared without a macro... yes
checking whether strndup is declared without a macro... yes
checking whether strnlen is declared without a macro... yes
checking whether strpbrk is declared without a macro... yes
checking whether strsep is declared without a macro... yes
checking whether strcasestr is declared without a macro... yes
checking whether strtok_r is declared without a macro... yes
checking whether strerror_r is declared without a macro... yes
checking whether strsignal is declared without a macro... yes
checking whether strverscmp is declared without a macro... yes
checking whether strtok_r is declared... (cached) yes
checking whether stat file-mode macros are broken... no
checking for mode_t... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for struct timespec in <time.h>... yes
checking whether <wchar.h> uses 'inline' correctly... yes
checking for wint_t... yes
checking for alloca as a compiler built-in... yes
checking whether alphasort is declared without a macro... yes
checking whether closedir is declared without a macro... yes
checking whether dirfd is declared without a macro... yes
checking whether fdopendir is declared without a macro... yes
checking whether opendir is declared without a macro... yes
checking whether readdir is declared without a macro... yes
checking whether rewinddir is declared without a macro... yes
checking whether scandir is declared without a macro... yes
checking for dirfd... yes
checking whether dirfd is declared... (cached) yes
checking whether dirfd is a macro... no
checking whether // is distinct from /... (cached) unknown, assuming no
checking for flexible array member... yes
checking whether conversion from 'int' to 'long double' works... guessing yes
checking for working GNU fnmatch... guessing no
checking whether isblank is declared... yes
checking whether isblank is declared... (cached) yes
checking whether frexp works... guessing yes
checking whether frexpl is declared... yes
checking whether frexpl() can be used without linking with libm... yes
checking whether frexpl works... guessing yes
checking whether gettimeofday clobbers localtime buffer... guessing no
checking for gettimeofday with POSIX signature... almost
checking whether INT32_MAX < INTMAX_MAX... yes
checking whether INT64_MAX == LONG_MAX... yes
checking whether UINT32_MAX < UINTMAX_MAX... yes
checking whether UINT64_MAX == ULONG_MAX... yes
checking whether isnan(double) can be used without linking with libm... yes
checking whether isnan(long double) can be used without linking with libm...
yes
checking whether isnanl works... guessing yes
checking whether NAN macro works... yes
checking whether HUGE_VAL works... yes
checking whether acosf is declared without a macro... yes
checking whether acosl is declared without a macro... yes
checking whether asinf is declared without a macro... yes
checking whether asinl is declared without a macro... yes
checking whether atanf is declared without a macro... yes
checking whether atanl is declared without a macro... yes
checking whether cbrt is declared without a macro... yes
checking whether cbrtf is declared without a macro... yes
checking whether cbrtl is declared without a macro... yes
checking whether ceilf is declared without a macro... yes
checking whether ceill is declared without a macro... yes
checking whether copysign is declared without a macro... yes
checking whether copysignf is declared without a macro... yes
checking whether copysignl is declared without a macro... yes
checking whether cosf is declared without a macro... yes
checking whether cosl is declared without a macro... yes
checking whether coshf is declared without a macro... yes
checking whether expf is declared without a macro... yes
checking whether expl is declared without a macro... yes
checking whether exp2 is declared without a macro... yes
checking whether exp2f is declared without a macro... yes
checking whether exp2l is declared without a macro... yes
checking whether expm1 is declared without a macro... yes
checking whether expm1f is declared without a macro... yes
checking whether expm1l is declared without a macro... yes
checking whether fabsf is declared without a macro... yes
checking whether fabsl is declared without a macro... yes
checking whether floorf is declared without a macro... yes
checking whether floorl is declared without a macro... yes
checking whether fma is declared without a macro... yes
checking whether fmaf is declared without a macro... yes
checking whether fmal is declared without a macro... yes
checking whether fmod is declared without a macro... yes
checking whether fmodf is declared without a macro... yes
checking whether fmodl is declared without a macro... yes
checking whether frexpf is declared without a macro... yes
checking whether frexpl is declared without a macro... yes
checking whether hypotf is declared without a macro... yes
checking whether hypotl is declared without a macro... yes
checking whether ilogb is declared without a macro... yes
checking whether ilogbf is declared without a macro... yes
checking whether ilogbl is declared without a macro... yes
checking whether ldexpf is declared without a macro... yes
checking whether ldexpl is declared without a macro... yes
checking whether log is declared without a macro... yes
checking whether logf is declared without a macro... yes
checking whether logl is declared without a macro... yes
checking whether log10 is declared without a macro... yes
checking whether log10f is declared without a macro... yes
checking whether log10l is declared without a macro... yes
checking whether log1p is declared without a macro... yes
checking whether log1pf is declared without a macro... yes
checking whether log1pl is declared without a macro... yes
checking whether log2 is declared without a macro... yes
checking whether log2f is declared without a macro... yes
checking whether log2l is declared without a macro... yes
checking whether logb is declared without a macro... yes
checking whether logbf is declared without a macro... yes
checking whether logbl is declared without a macro... yes
checking whether modf is declared without a macro... yes
checking whether modff is declared without a macro... yes
checking whether modfl is declared without a macro... yes
checking whether powf is declared without a macro... yes
checking whether remainder is declared without a macro... yes
checking whether remainderf is declared without a macro... yes
checking whether remainderl is declared without a macro... yes
checking whether rint is declared without a macro... yes
checking whether rintf is declared without a macro... yes
checking whether rintl is declared without a macro... yes
checking whether round is declared without a macro... yes
checking whether roundf is declared without a macro... yes
checking whether roundl is declared without a macro... yes
checking whether sinf is declared without a macro... yes
checking whether sinl is declared without a macro... yes
checking whether sinhf is declared without a macro... yes
checking whether sqrtf is declared without a macro... yes
checking whether sqrtl is declared without a macro... yes
checking whether tanf is declared without a macro... yes
checking whether tanl is declared without a macro... yes
checking whether tanhf is declared without a macro... yes
checking whether trunc is declared without a macro... yes
checking whether truncf is declared without a macro... yes
checking whether truncl is declared without a macro... yes
checking whether mbrtowc handles incomplete characters... guessing yes
checking whether mbrtowc works as well as mbtowc... guessing yes
checking whether mbrtowc handles a NULL pwc argument... guessing yes
checking whether mbrtowc handles a NULL string argument... guessing yes
checking whether mbrtowc has a correct return value... guessing yes
checking whether mbrtowc returns 0 when parsing a NUL character... guessing yes
checking whether mbrtowc works on empty input... guessing no
checking whether the C locale is free of encoding errors... guessing no
checking whether mbrtowc handles incomplete characters... (cached) guessing yes
checking whether mbrtowc works as well as mbtowc... (cached) guessing yes
checking whether mbrtowc handles incomplete characters... (cached) guessing yes
checking whether mbrtowc works as well as mbtowc... (cached) guessing yes
checking whether mbsrtowcs works... guessing yes
checking bp-sym.h usability... no
checking bp-sym.h presence... no
checking for bp-sym.h... no
checking whether memmem works in linear time... guessing yes
checking for memmem... (cached) yes
checking whether memmem works... (cached) guessing yes
checking for rawmemchr... yes
checking whether readlink signature is correct... yes
checking whether readlink handles trailing slash correctly... guessing yes
checking whether rename honors trailing slash on destination... guessing yes
checking whether rename honors trailing slash on source... guessing yes
checking whether rename manages hard links correctly... guessing yes
checking whether rename manages existing destinations correctly... guessing yes
checking whether rmdir works... guessing yes
checking for volatile sig_atomic_t... yes
checking for sighandler_t... yes
checking whether pthread_sigmask is declared without a macro... yes
checking whether sigaction is declared without a macro... yes
checking whether sigaddset is declared without a macro... yes
checking whether sigdelset is declared without a macro... yes
checking whether sigemptyset is declared without a macro... yes
checking whether sigfillset is declared without a macro... yes
checking whether sigismember is declared without a macro... yes
checking whether sigpending is declared without a macro... yes
checking whether sigprocmask is declared without a macro... yes
checking for ssize_t... yes
checking whether stat handles trailing slashes on directories... guessing yes
checking whether stat handles trailing slashes on files... guessing yes
checking for max_align_t... yes
checking whether NULL can be used in arbitrary expressions... yes
checking which flavor of printf attribute matches inttypes macros... system
checking whether dprintf is declared without a macro... yes
checking whether fpurge is declared without a macro... no
checking whether fseeko is declared without a macro... yes
checking whether ftello is declared without a macro... yes
checking whether getdelim is declared without a macro... yes
checking whether getline is declared without a macro... yes
checking whether gets is declared without a macro... no
checking whether pclose is declared without a macro... yes
checking whether popen is declared without a macro... yes
checking whether renameat is declared without a macro... yes
checking whether snprintf is declared without a macro... yes
checking whether tmpfile is declared without a macro... yes
checking whether vdprintf is declared without a macro... yes
checking whether vsnprintf is declared without a macro... yes
checking whether _Exit is declared without a macro... yes
checking whether atoll is declared without a macro... yes
checking whether canonicalize_file_name is declared without a macro... yes
checking whether getloadavg is declared without a macro... yes
checking whether getsubopt is declared without a macro... yes
checking whether grantpt is declared without a macro... yes
checking whether initstate is declared without a macro... yes
checking whether initstate_r is declared without a macro... yes
checking whether mkdtemp is declared without a macro... yes
checking whether mkostemp is declared without a macro... yes
checking whether mkostemps is declared without a macro... yes
checking whether mkstemp is declared without a macro... yes
checking whether mkstemps is declared without a macro... yes
checking whether posix_openpt is declared without a macro... yes
checking whether ptsname is declared without a macro... yes
checking whether ptsname_r is declared without a macro... yes
checking whether qsort_r is declared without a macro... yes
checking whether random is declared without a macro... yes
checking whether random_r is declared without a macro... yes
checking whether realpath is declared without a macro... yes
checking whether rpmatch is declared without a macro... yes
checking whether secure_getenv is declared without a macro... yes
checking whether setenv is declared without a macro... yes
checking whether setstate is declared without a macro... yes
checking whether setstate_r is declared without a macro... yes
checking whether srandom is declared without a macro... yes
checking whether srandom_r is declared without a macro... yes
checking whether strtod is declared without a macro... yes
checking whether strtoll is declared without a macro... yes
checking whether strtoull is declared without a macro... yes
checking whether unlockpt is declared without a macro... yes
checking whether unsetenv is declared without a macro... yes
checking for strchrnul... yes
checking whether strchrnul works... guessing yes
checking for strtok_r... yes
checking whether strtok_r works... guessing no
checking for nlink_t... yes
checking whether fchmodat is declared without a macro... yes
checking whether fstat is declared without a macro... yes
checking whether fstatat is declared without a macro... yes
checking whether futimens is declared without a macro... yes
checking whether lchmod is declared without a macro... yes
checking whether lstat is declared without a macro... yes
checking whether mkdirat is declared without a macro... yes
checking whether mkfifo is declared without a macro... yes
checking whether mkfifoat is declared without a macro... yes
checking whether mknod is declared without a macro... yes
checking whether mknodat is declared without a macro... yes
checking whether stat is declared without a macro... yes
checking whether utimensat is declared without a macro... yes
checking whether chdir is declared without a macro... yes
checking whether chown is declared without a macro... yes
checking whether dup is declared without a macro... yes
checking whether dup2 is declared without a macro... yes
checking whether dup3 is declared without a macro... yes
checking whether environ is declared without a macro... yes
checking whether euidaccess is declared without a macro... yes
checking whether faccessat is declared without a macro... yes
checking whether fchdir is declared without a macro... yes
checking whether fchownat is declared without a macro... yes
checking whether fdatasync is declared without a macro... yes
checking whether fsync is declared without a macro... yes
checking whether ftruncate is declared without a macro... yes
checking whether getcwd is declared without a macro... yes
checking whether getdomainname is declared without a macro... yes
checking whether getdtablesize is declared without a macro... yes
checking whether getgroups is declared without a macro... yes
checking whether gethostname is declared without a macro... yes
checking whether getlogin is declared without a macro... yes
checking whether getlogin_r is declared without a macro... yes
checking whether getpagesize is declared without a macro... yes
checking whether getusershell is declared without a macro... yes
checking whether setusershell is declared without a macro... yes
checking whether endusershell is declared without a macro... yes
checking whether group_member is declared without a macro... yes
checking whether isatty is declared without a macro... yes
checking whether lchown is declared without a macro... yes
checking whether link is declared without a macro... yes
checking whether linkat is declared without a macro... yes
checking whether lseek is declared without a macro... yes
checking whether pipe is declared without a macro... yes
checking whether pipe2 is declared without a macro... yes
checking whether pread is declared without a macro... yes
checking whether pwrite is declared without a macro... yes
checking whether readlink is declared without a macro... yes
checking whether readlinkat is declared without a macro... yes
checking whether rmdir is declared without a macro... yes
checking whether sethostname is declared without a macro... yes
checking whether sleep is declared without a macro... yes
checking whether symlink is declared without a macro... yes
checking whether symlinkat is declared without a macro... yes
checking whether ttyname_r is declared without a macro... yes
checking whether unlink is declared without a macro... yes
checking whether unlinkat is declared without a macro... yes
checking whether usleep is declared without a macro... yes
checking whether btowc is declared without a macro... yes
checking whether wctob is declared without a macro... yes
checking whether mbsinit is declared without a macro... yes
checking whether mbrtowc is declared without a macro... yes
checking whether mbrlen is declared without a macro... yes
checking whether mbsrtowcs is declared without a macro... yes
checking whether mbsnrtowcs is declared without a macro... yes
checking whether wcrtomb is declared without a macro... yes
checking whether wcsrtombs is declared without a macro... yes
checking whether wcsnrtombs is declared without a macro... yes
checking whether wcwidth is declared without a macro... yes
checking whether wmemchr is declared without a macro... yes
checking whether wmemcmp is declared without a macro... yes
checking whether wmemcpy is declared without a macro... yes
checking whether wmemmove is declared without a macro... yes
checking whether wmemset is declared without a macro... yes
checking whether wcslen is declared without a macro... yes
checking whether wcsnlen is declared without a macro... yes
checking whether wcscpy is declared without a macro... yes
checking whether wcpcpy is declared without a macro... yes
checking whether wcsncpy is declared without a macro... yes
checking whether wcpncpy is declared without a macro... yes
checking whether wcscat is declared without a macro... yes
checking whether wcsncat is declared without a macro... yes
checking whether wcscmp is declared without a macro... yes
checking whether wcsncmp is declared without a macro... yes
checking whether wcscasecmp is declared without a macro... yes
checking whether wcsncasecmp is declared without a macro... yes
checking whether wcscoll is declared without a macro... yes
checking whether wcsxfrm is declared without a macro... yes
checking whether wcsdup is declared without a macro... yes
checking whether wcschr is declared without a macro... yes
checking whether wcsrchr is declared without a macro... yes
checking whether wcscspn is declared without a macro... yes
checking whether wcsspn is declared without a macro... yes
checking whether wcspbrk is declared without a macro... yes
checking whether wcsstr is declared without a macro... yes
checking whether wcstok is declared without a macro... yes
checking whether wcswidth is declared without a macro... yes
checking whether iswcntrl works... guessing yes
checking for towlower... yes
checking for wctype_t... yes
checking for wctrans_t... yes
checking whether wctype is declared without a macro... yes
checking whether iswctype is declared without a macro... yes
checking whether wctrans is declared without a macro... yes
checking whether towctrans is declared without a macro... yes
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for aarch64-linux-gnu-strip... aarch64-linux-gnu-strip
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking for style of include used by make... GNU
checking dependency style of aarch64-linux-gnu-gcc... gcc3
checking whether ln -s works... yes
checking for aarch64-linux-gnu-ranlib... (cached) aarch64-linux-gnu-ranlib
checking for aarch64-linux-gnu-ar... (cached) aarch64-linux-gnu-ar
configure: creating ./config.status
config.status: creating Makefile
config.status: creating import/Makefile
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing depfiles commands
config.status: executing default commands
=== configuring in build-libiberty-gdbserver
(/home/pavel/harman/gdb-8.0/gdb/gdbserver/build-libiberty-gdbserver)
configure: running /bin/bash .././../../libiberty/configure
--disable-option-checking '--prefix=NONE' '--host=aarch64-linux-gnu'
'CC=aarch64-linux-gnu-gcc' 'host_alias=aarch64-linux-gnu'
--cache-file=/dev/null --srcdir=.././../../libiberty
checking whether to enable maintainer-specific portions of Makefiles... no
checking for makeinfo... makeinfo
checking for perl... perl
checking build system type... x86_64-pc-linux-gnu
checking host system type... aarch64-unknown-linux-gnu
checking for aarch64-linux-gnu-ar... aarch64-linux-gnu-ar
checking for aarch64-linux-gnu-ranlib... aarch64-linux-gnu-ranlib
checking whether to install libiberty headers and static library... no
configure: target_header_dir =
checking for aarch64-linux-gnu-gcc... aarch64-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether aarch64-linux-gnu-gcc accepts -g... yes
checking for aarch64-linux-gnu-gcc option to accept ISO C89... none needed
checking how to run the C preprocessor... aarch64-linux-gnu-gcc -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking minix/config.h usability... no
checking minix/config.h presence... no
checking for minix/config.h... no
checking whether it is safe to define __EXTENSIONS__... yes
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... no
checking whether aarch64-linux-gnu-gcc supports -W... yes
checking whether aarch64-linux-gnu-gcc supports -Wall... yes
checking whether aarch64-linux-gnu-gcc supports -Wwrite-strings... yes
checking whether aarch64-linux-gnu-gcc supports -Wc++-compat... yes
checking whether aarch64-linux-gnu-gcc supports -Wstrict-prototypes... yes
checking whether aarch64-linux-gnu-gcc supports -Wshadow=local... no
checking whether aarch64-linux-gnu-gcc supports -pedantic ... yes
checking whether aarch64-linux-gnu-gcc and cc understand -c and -o together...
yes
checking for an ANSI C-conforming const... yes
checking for inline... inline
checking whether byte ordering is bigendian... no
checking for a BSD-compatible install... /usr/bin/install -c
checking for sys/file.h... yes
checking for sys/param.h... yes
checking for limits.h... yes
checking for stdlib.h... (cached) yes
checking for malloc.h... yes
checking for string.h... (cached) yes
checking for unistd.h... (cached) yes
checking for strings.h... (cached) yes
checking for sys/time.h... yes
checking for time.h... yes
checking for sys/resource.h... yes
checking for sys/stat.h... (cached) yes
checking for sys/mman.h... yes
checking for fcntl.h... yes
checking for alloca.h... yes
checking for sys/pstat.h... no
checking for sys/sysmp.h... no
checking for sys/sysinfo.h... yes
checking for machine/hal_sysinfo.h... no
checking for sys/table.h... no
checking for sys/sysctl.h... yes
checking for sys/systemcfg.h... no
checking for stdint.h... (cached) yes
checking for stdio_ext.h... yes
checking for process.h... no
checking for sys/prctl.h... yes
checking for sys/wait.h that is POSIX.1 compatible... yes
checking whether time.h and sys/time.h may both be included... yes
checking whether errno must be declared... no
checking size of int... 4
checking size of long... 8
checking size of size_t... 8
checking for long long... yes
checking size of long long... 8
checking for a 64-bit type... uint64_t
checking for intptr_t... yes
checking for uintptr_t... yes
checking for ssize_t... yes
checking for pid_t... yes
checking for library containing strerror... none required
checking for asprintf... yes
checking for atexit... yes
checking for basename... yes
checking for bcmp... yes
checking for bcopy... yes
checking for bsearch... yes
checking for bzero... yes
checking for calloc... yes
checking for clock... yes
checking for ffs... yes
checking for getcwd... yes
checking for getpagesize... yes
checking for gettimeofday... yes
checking for index... yes
checking for insque... yes
checking for memchr... yes
checking for memcmp... yes
checking for memcpy... yes
checking for memmem... yes
checking for memmove... yes
checking for mempcpy... yes
checking for memset... yes
checking for mkstemps... yes
checking for putenv... yes
checking for random... yes
checking for rename... yes
checking for rindex... yes
checking for setenv... yes
checking for snprintf... yes
checking for sigsetmask... yes
checking for stpcpy... yes
checking for stpncpy... yes
checking for strcasecmp... yes
checking for strchr... yes
checking for strdup... yes
checking for strncasecmp... yes
checking for strndup... yes
checking for strnlen... yes
checking for strrchr... yes
checking for strstr... yes
checking for strtod... yes
checking for strtol... yes
checking for strtoul... yes
checking for strtoll... yes
checking for strtoull... yes
checking for strverscmp... yes
checking for tmpnam... yes
checking for vasprintf... yes
checking for vfprintf... yes
checking for vprintf... yes
checking for vsnprintf... yes
checking for vsprintf... yes
checking for waitpid... yes
checking for setproctitle... no
checking whether alloca needs Cray hooks... no
checking stack direction for C alloca... 0
checking for vfork.h... no
checking for fork... yes
checking for vfork... yes
checking for working fork... cross
checking for working vfork... (cached) yes
checking for _doprnt... no
checking for sys_errlist... yes
checking for sys_nerr... yes
checking for sys_siglist... yes
checking for external symbol _system_configuration... no
checking for __fsetlocking... yes
checking for canonicalize_file_name... yes
checking for dup3... yes
checking for getrlimit... yes
checking for getrusage... yes
checking for getsysinfo... no
checking for gettimeofday... (cached) yes
checking for on_exit... yes
checking for psignal... yes
checking for pstat_getdynamic... no
checking for pstat_getstatic... no
checking for realpath... yes
checking for setrlimit... yes
checking for sbrk... yes
checking for spawnve... no
checking for spawnvpe... no
checking for strerror... yes
checking for strsignal... yes
checking for sysconf... yes
checking for sysctl... no
checking for sysmp... no
checking for table... no
checking for times... yes
checking for wait3... yes
checking for wait4... yes
checking whether basename is declared... yes
checking whether ffs is declared... yes
checking whether asprintf is declared... yes
checking whether vasprintf is declared... yes
checking whether snprintf is declared... yes
checking whether vsnprintf is declared... yes
checking whether calloc is declared... yes
checking whether getenv is declared... yes
checking whether getopt is declared... yes
checking whether malloc is declared... yes
checking whether realloc is declared... yes
checking whether sbrk is declared... yes
checking whether strtol is declared... yes
checking whether strtoul is declared... yes
checking whether strtoll is declared... yes
checking whether strtoull is declared... yes
checking whether strverscmp is declared... yes
checking whether strnlen is declared... yes
checking whether canonicalize_file_name must be declared... no
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for getpagesize... (cached) yes
checking for working mmap... no
checking for working strncmp... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating testsuite/Makefile
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing default commands
checking sgtty.h usability... yes
checking sgtty.h presence... yes
checking for sgtty.h... yes
checking termio.h usability... yes
checking termio.h presence... yes
checking for termio.h... yes
checking termios.h usability... yes
checking termios.h presence... yes
checking for termios.h... yes
checking sys/reg.h usability... no
checking sys/reg.h presence... no
checking for sys/reg.h... no
checking for string.h... (cached) yes
checking proc_service.h usability... no
checking proc_service.h presence... no
checking for proc_service.h... no
checking sys/procfs.h usability... yes
checking sys/procfs.h presence... yes
checking for sys/procfs.h... yes
checking linux/elf.h usability... yes
checking linux/elf.h presence... yes
checking for linux/elf.h... yes
checking fcntl.h usability... yes
checking fcntl.h presence... yes
checking for fcntl.h... yes
checking signal.h usability... yes
checking signal.h presence... yes
checking for signal.h... yes
checking sys/file.h usability... yes
checking sys/file.h presence... yes
checking for sys/file.h... yes
checking sys/ioctl.h usability... yes
checking sys/ioctl.h presence... yes
checking for sys/ioctl.h... yes
checking netinet/in.h usability... yes
checking netinet/in.h presence... yes
checking for netinet/in.h... yes
checking sys/socket.h usability... yes
checking sys/socket.h presence... yes
checking for sys/socket.h... yes
checking netdb.h usability... yes
checking netdb.h presence... yes
checking for netdb.h... yes
checking netinet/tcp.h usability... yes
checking netinet/tcp.h presence... yes
checking for netinet/tcp.h... yes
checking arpa/inet.h usability... yes
checking arpa/inet.h presence... yes
checking for arpa/inet.h... yes
checking for pid_t... yes
checking vfork.h usability... no
checking vfork.h presence... no
checking for vfork.h... no
checking for fork... yes
checking for vfork... yes
checking for working fork... cross
checking for working vfork... (cached) yes
checking for getauxval... yes
checking for pread... yes
checking for pwrite... yes
checking for pread64... yes
checking for setns... yes
checking for ANSI C header files... (cached) yes
checking for working alloca.h... yes
checking for alloca... yes
checking for nl_langinfo and CODESET... yes
checking linux/perf_event.h usability... yes
checking linux/perf_event.h presence... yes
checking for linux/perf_event.h... yes
checking locale.h usability... yes
checking locale.h presence... yes
checking for locale.h... yes
checking for memory.h... (cached) yes
checking for signal.h... (cached) yes
checking sys/resource.h usability... yes
checking sys/resource.h presence... yes
checking for sys/resource.h... yes
checking for sys/socket.h... (cached) yes
checking sys/syscall.h usability... yes
checking sys/syscall.h presence... yes
checking for sys/syscall.h... yes
checking sys/un.h usability... yes
checking sys/un.h presence... yes
checking for sys/un.h... yes
checking sys/wait.h usability... yes
checking sys/wait.h presence... yes
checking for sys/wait.h... yes
checking thread_db.h usability... yes
checking thread_db.h presence... yes
checking for thread_db.h... yes
checking wait.h usability... yes
checking wait.h presence... yes
checking for wait.h... yes
checking for fdwalk... no
checking for getrlimit... yes
checking for pipe... yes
checking for pipe2... yes
checking for socketpair... yes
checking for sigaction... yes
checking whether strerror is declared... yes
checking whether strstr is declared... yes
checking for sigsetjmp... yes
checking sys/ptrace.h usability... yes
checking sys/ptrace.h presence... yes
checking for sys/ptrace.h... yes
checking ptrace.h usability... no
checking ptrace.h presence... no
checking for ptrace.h... no
checking whether ptrace is declared... yes
checking return type of ptrace... long
checking types of arguments for ptrace... enum __ptrace_request,int,long,long
checking for ust... no
checking compiler warning flags... -Wall -Wpointer-arith -Wno-unused
-Wunused-value -Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body
-Wunused-but-set-parameter -Wunused-but-set-variable -Wno-sign-compare
-Wno-narrowing -Wformat-nonliteral
checking for dladdr... yes
checking for long long... yes
checking size of long long... 8
checking whether basename is declared... yes
checking whether ffs is declared... yes
checking whether asprintf is declared... yes
checking whether vasprintf is declared... yes
checking whether snprintf is declared... yes
checking whether vsnprintf is declared... yes
checking whether strtol is declared... yes
checking whether strtoul is declared... yes
checking whether strtoll is declared... yes
checking whether strtoull is declared... yes
checking whether strverscmp is declared... yes
checking whether strerror is declared... (cached) yes
checking whether perror is declared... yes
checking whether vasprintf is declared... (cached) yes
checking whether vsnprintf is declared... (cached) yes
checking for struct stat.st_blocks... yes
checking for struct stat.st_blksize... yes
checking for struct user_regs_struct.fs_base... no
checking for struct user_regs_struct.gs_base... no
checking for socklen_t... yes
checking for Elf32_auxv_t... yes
checking for Elf64_auxv_t... yes
checking for PTRACE_GETREGS... no
checking for PTRACE_GETFPXREGS... no
checking for lwpid_t in sys/procfs.h... yes
checking for psaddr_t in sys/procfs.h... yes
checking for prgregset_t in sys/procfs.h... yes
checking for prfpregset_t in sys/procfs.h... yes
checking for elf_fpregset_t in sys/procfs.h... yes
checking for dlopen in -ldl... yes
checking for the dynamic export flag... -Wl,--dynamic-list
checking for TD_VERSION... yes
checking whether the target supports __sync_*_compare_and_swap... yes
checking whether ADDR_NO_RANDOMIZE is declared... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
config.status: config.h is unchanged
config.status: executing depdir commands
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>From gdb-prs-return-21886-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 06 13:02:48 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22091] PASS->FAIL: gdb.arch/thumb2-it.exp
Date: Wed, 06 Sep 2017 13:37:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Casts is the simplest. Can you give it a try? Assuming the function returns
nothing, then something like this should work:
- gdb_test "call ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
+ gdb_test "call (void) ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
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>From gdb-prs-return-21887-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 06 13:37:46 2017
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22091] PASS->FAIL: gdb.arch/thumb2-it.exp
Date: Wed, 06 Sep 2017 13:51:00 -0000
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--- Comment #2 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Pedro Alves from comment #1)
> Casts is the simplest. Can you give it a try? Assuming the function
> returns nothing, then something like this should work:
>
> - gdb_test "call ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
> + gdb_test "call (void) ${func}()" "Breakpoint.*@ Setup.*" "$func, call"
It works on the condition that the call to it_breakpoints below is also cast.
Thanks.
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>From gdb-prs-return-21888-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 06 13:51:16 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22091] PASS->FAIL: gdb.arch/thumb2-it.exp
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https://sourceware.org/bugzilla/show_bug.cgi?id=22091
--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Could you send the resulting patch to gdb-patches? With a ChangeLog entry, it
should be good to go.
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From: "thopre01 at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22091] PASS->FAIL: gdb.arch/thumb2-it.exp
Date: Wed, 06 Sep 2017 16:35:00 -0000
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--- Comment #4 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
(In reply to Pedro Alves from comment #3)
> Could you send the resulting patch to gdb-patches? With a ChangeLog entry,
> it should be good to go.
Absolutely, will do.
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From: "alfedotov at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22098] New: failed to build with mingw 5.1.0
Date: Wed, 06 Sep 2017 17:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22098
Bug ID: 22098
Summary: failed to build with mingw 5.1.0
Product: gdb
Version: 8.0
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gcc version 5.1.0 20150422 (Fedora MinGW 5.1.0-2.fc22) (GCC)
../../src_gdb/gdb/arm-linux-tdep.c:394:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:394:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:404:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:404:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:415:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:415:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:415:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:426:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:426:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:426:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:438:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:438:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:438:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:438:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:450:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:450:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:450:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:450:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:461:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
../../src_gdb/gdb/arm-linux-tdep.c:461:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
../../src_gdb/gdb/arm-linux-tdep.c:461:1: error: narrowing conversion of '-1ll'
from 'LONGEST {aka long long int}' to 'ULONGEST {aka long long unsigned int}'
inside { }
../../src_gdb/gdb/arm-linux-tdep.c:472:1: error: narrowing conversion of '-1'
from 'int' to 'ULONGEST {aka long long unsigned int}' inside { }
};
^
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Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Wed, 06 Sep 2017 17:13:00 -0000
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--- Comment #11 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5aec60eb2f6f0905bfc76f5949fd5d55c6a10f10
commit 5aec60eb2f6f0905bfc76f5949fd5d55c6a10f10
Author: Tom Tromey <tom@tromey.com>
Date: Wed Aug 30 16:12:56 2017 -0600
Cast char constant to int in sizeof.exp
PR gdb/22010 concerns a regression I introduced with the scalar
printing changes. The bug is that this code in sizeof.exp:
set signof_byte [get_integer_valueof "'\\377'" -1]
can incorrectly compute sizeof_byte. One underlying problem here is
that gdb's C parser doesn't treat a char constant as an int (this is
PR 19973).
However, it seems good to have an immediate fix for the regression.
The simplest is to cast to an int here.
testsuite/ChangeLog
2017-09-05 Tom Tromey <tom@tromey.com>
PR gdb/22010:
* gdb.base/sizeof.exp (check_valueof): Cast char constant to int.
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Subject: [Bug gdb/19973] gdb prints sizeof a char literal as 1 when the
language is C
Date: Wed, 06 Sep 2017 17:13:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=5aec60eb2f6f0905bfc76f5949fd5d55c6a10f10
commit 5aec60eb2f6f0905bfc76f5949fd5d55c6a10f10
Author: Tom Tromey <tom@tromey.com>
Date: Wed Aug 30 16:12:56 2017 -0600
Cast char constant to int in sizeof.exp
PR gdb/22010 concerns a regression I introduced with the scalar
printing changes. The bug is that this code in sizeof.exp:
set signof_byte [get_integer_valueof "'\\377'" -1]
can incorrectly compute sizeof_byte. One underlying problem here is
that gdb's C parser doesn't treat a char constant as an int (this is
PR 19973).
However, it seems good to have an immediate fix for the regression.
The simplest is to cast to an int here.
testsuite/ChangeLog
2017-09-05 Tom Tromey <tom@tromey.com>
PR gdb/22010:
* gdb.base/sizeof.exp (check_valueof): Cast char constant to int.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22010] PASS->FAIL: gdb.base/sizeof.exp: check valueof
"'\377'"
Date: Thu, 07 Sep 2017 06:17:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #12 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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Subject: [Bug remote/22021] Multi-arch exec fails with a remote target
Date: Thu, 07 Sep 2017 09:01:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.0.1
--- Comment #1 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by this series:
https://sourceware.org/ml/gdb-patches/2017-08/msg00503.html
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Subject: [Bug build/22098] failed to build with mingw 5.1.0
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https://sourceware.org/bugzilla/show_bug.cgi?id=22098
Alexander Fedotov <alfedotov at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|gdb |build
--- Comment #1 from Alexander Fedotov <alfedotov at gmail dot com> ---
Environment is:
Fedora 4.4.14-200.fc22.x86_64 #1 SMP Fri Jun 24 21:19:33 UTC 2016 x86_64 x86_64
x86_64 GNU/Linux
gcc version 5.1.0 20150422 (Fedora MinGW 5.1.0-2.fc22) (GCC)
../../src_gdb/gdb/aarch64-tdep.c: In function 'VEC_CORE_ADDR*
aarch64_software_single_step(regcache*)':
../../src_gdb/gdb/aarch64-tdep.c:2428:34: error: narrowing conversion of '-1'
from 'int' to 'CORE_ADDR {aka long long unsigned int}' inside { }
CORE_ADDR breaks[2] = { -1, -1 };
^
../../src_gdb/gdb/aarch64-tdep.c:2428:34: error: narrowing conversion of '-1'
from 'int' to 'CORE_ADDR {aka long long unsigned int}' inside { }
Makefile:1876: recipe for target 'aarch64-tdep.o' failed
--
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From: "sven.c.dack at sky dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22102] New: 32-bit gdb build fails with undefined
reference to amd64_create_target_description
Date: Thu, 07 Sep 2017 12:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22102
Bug ID: 22102
Summary: 32-bit gdb build fails with undefined reference to
amd64_create_target_description
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: sven.c.dack at sky dot com
Target Milestone: ---
Current binutils fails to build gdb on 32-bit (i686-pc-linux-gnu) with
undefined reference to amd64_create_target_description. The same source builds
just fine on 64-bit however.
The BFD_VERSION_DATE is 20170907.
The last working version of gdb for 32-bit that I have is 8.0.50.20170831-git.
The failure seems to have been introduced only recently.
g++ -pipe -O3 -march=native -fomit-frame-pointer -fno-checking -flto
-ffat-lto-objects -flto-partition=balanced -static-libstdc++ -static-libgcc
-Wl,-O1,--hash-style=gnu,--enable-new-dtags,-z,combreloc,-z,noexecstack,-z,relro,-z,now
-fno-checking -pipe -O3 -march=native -fomit-frame-pointer -fno-checking -flto
-ffat-lto-objects -flto-partition=balanced \
-o gdb gdb.o amd64-tdep.o amd64-linux-tdep.o i386-tdep.o i386.o
i386-linux-tdep.o glibc-tdep.o i387-tdep.o solib-svr4.o symfile-mem.o
linux-tdep.o linux-record.o ser-base.o ser-unix.o ser-pipe.o ser-tcp.o
inf-ptrace.o fork-child.o fork-inferior.o proc-service.o linux-thread-db.o
linux-nat.o linux-osdata.o linux-fork.o linux-procfs.o linux-ptrace.o
linux-waitpid.o linux-personality.o linux-namespaces.o x86-nat.o x86-dregs.o
i386-linux-nat.o x86-linux-nat.o linux-btrace.o
x86-linux.o x86-linux-dregs.o ax-gdb.o ax-general.o ctf.o dcache.o remote.o
remote-fileio.o remote-notif.o tracefile.o tracefile-tfile.o tracepoint.o
cli-cmds.o cli-decode.o cli-dump.o cli-interp.o cli-logging.o cli-script.o
cli-setshow.o cli-utils.o mi-cmd-break.o mi-cmd-catch.o mi-cmd-disas.o
mi-cmd-env.o mi-cmd-file.o mi-cmd-info.o mi-cmd-stack.o mi-cmd-target.o
mi-cmd-var.o mi-cmds.o mi-console.o mi-getopt.o mi-interp.o mi-main.o mi-out.o
mi-parse.o mi-symbol-cmds.o tui.o tui-command.o tui-data.o tui-disasm.o
tui-file.o tui-hooks.o tui-interp.o tui-io.o tui-layout.o tui-out.o tui-regs.o
tui-source.o tui-stack.o tui-win.o tui-windata.o tui-wingeneral.o
tui-winsource.o py-arch.o py-auto-load.o py-block.o py-bpevent.o
py-breakpoint.o py-cmd.o py-continueevent.o py-event.o py-evtregistry.o
py-evts.o py-exitedevent.o py-finishbreakpoint.o py-frame.o py-framefilter.o
py-function.o py-gdb-readline.o py-inferior.o py-infevents.o py-infthread.o
py-instruction.o py-lazy-string.o py-linetable.o py-newobjfileevent.o
py-objfile.o py-param.o py-prettyprint.o py-progspace.o py-record.o
py-record-btrace.o py-record-full.o py-signalevent.o py-stopevent.o py-symbol.o
py-symtab.o py-threadevent.o py-type.o py-unwind.o py-utils.o py-value.o
py-varobj.o py-xmethods.o python.o guile.o scm-arch.o scm-auto-load.o
scm-block.o scm-breakpoint.o scm-cmd.o scm-disasm.o scm-exception.o scm-frame.o
scm-gsmob.o scm-iterator.o scm-lazy-string.o scm-math.o scm-objfile.o
scm-param.o scm-ports.o scm-pretty-print.o scm-progspace.o scm-safe-call.o
scm-string.o scm-symbol.o scm-symtab.o scm-type.o scm-utils.o scm-value.o
elfread.o stap-probe.o dtrace-probe.o posix-hdep.o posix-strerror.o
array-view-selftests.o environ-selftests.o function-view-selftests.o
offset-type-selftests.o optional-selftests.o ptid-selftests.o
scoped_restore-selftests.o ada-exp.o c-exp.o cp-name-parser.o d-exp.o f-exp.o
go-exp.o m2-exp.o p-exp.o rust-exp.o ada-lang.o ada-tasks.o ada-typeprint.o
ada-valprint.o ada-varobj.o addrmap.o agent.o annotate.o arch-utils.o
auto-load.o auxv.o bcache.o bfd-target.o block.o blockframe.o break-catch-sig.o
break-catch-syscall.o break-catch-throw.o breakpoint.o btrace.o btrace-common.o
buffer.o build-id.o buildsym.o c-lang.o c-typeprint.o c-valprint.o c-varobj.o
charset.o cleanups.o cli-out.o coff-pe-read.o coffread.o common-agent.o
common-debug.o common-exceptions.o job-control.o common-regcache.o
common-utils.o complaints.o completer.o continuations.o copying.o corefile.o
corelow.o cp-abi.o cp-namespace.o cp-support.o cp-valprint.o d-lang.o
d-namespace.o d-valprint.o dbxread.o debug.o demangle.o dfp.o dictionary.o
disasm.o disasm-selftests.o doublest.o dummy-frame.o dwarf2-frame.o
dwarf2-frame-tailcall.o dwarf2expr.o dwarf2loc.o dwarf2read.o environ.o
errors.o eval.o event-loop.o event-top.o exceptions.o exec.o expprint.o
extension.o f-lang.o f-typeprint.o f-valprint.o fileio.o filename-seen-cache.o
filestuff.o filesystem.o findcmd.o findvar.o format.o frame.o frame-base.o
frame-unwind.o gcore.o gdb_bfd.o gdb-dlfcn.o gdb_obstack.o gdb_regex.o
gdb_usleep.o gdb_vecs.o gdbarch.o gdbarch-selftests.o gdbtypes.o gnu-v2-abi.o
gnu-v3-abi.o go-lang.o go-typeprint.o go-valprint.o inf-child.o inf-loop.o
infcall.o infcmd.o inferior.o infrun.o inline-frame.o interps.o jit.o
language.o linespec.o location.o m2-lang.o m2-typeprint.o m2-valprint.o
macrocmd.o macroexp.o macroscope.o macrotab.o main.o maint.o mdebugread.o
mem-break.o memattr.o memory-map.o memrange.o mi-common.o minidebug.o minsyms.o
mipsread.o namespace.o new-op.o objc-lang.o objfiles.o observer.o opencl-lang.o
osabi.o osdata.o p-lang.o p-typeprint.o p-valprint.o parse.o print-utils.o
printcmd.o probe.o progspace.o progspace-and-thread.o prologue-value.o
psymtab.o ptid.o record.o record-btrace.o record-full.o regcache.o reggroups.o
registry.o reverse.o rsp-low.o run-time-clock.o rust-lang.o selftest.o
selftest-arch.o sentinel-frame.o ser-event.o serial.o signals.o
signals-state-save-restore.o skip.o solib.o solib-target.o source.o stabsread.o
stack.o std-regs.o symfile.o symfile-debug.o symmisc.o symtab.o target.o
target-dcache.o target-descriptions.o target-memory.o thread.o thread-fsm.o
tid-parse.o top.o trad-frame.o tramp-frame.o typeprint.o ui-file.o ui-out.o
user-regs.o utils.o utils-selftests.o valarith.o valops.o valprint.o value.o
varobj.o vec.o version.o waitstatus.o xml-builtin.o xml-support.o xml-syscall.o
xml-tdesc.o xml-utils.o compile.o compile-c-support.o compile-c-symbols.o
compile-c-types.o compile-loc2c.o compile-object-load.o compile-object-run.o
inflow.o init.o \
../readline/libreadline.a ../opcodes/libopcodes.a ../bfd/libbfd.a
-L./../zlib -lz ../libiberty/libiberty.a ../libdecnumber/libdecnumber.a
-ldl -ldl -lncurses -lm -ldl -L/home/sven/gnu32/lib -lguile-2.0 -lgc -lpthread
-ldl -lutil -lm -lpython2.7 -lexpat /home/sven/gnu32/lib/liblzma.so -Wl,-rpath
-Wl,/home/sven/gnu32/lib ../libiberty/libiberty.a
build-gnulib/import/libgnu.a /home/sven/gnu32/lib/libiconv.so -Wl,-rpath
-Wl,/home/sven/gnu32/lib -ldl
-Wl,--dynamic-list=/dev/shm/build-pkg-18379/src/binutils-master/gdb/proc-service.list
/dev/shm/build-pkg-18379/src/binutils-master/gold/gdb-index.cc: In member
function 'visit_children':
/dev/shm/build-pkg-18379/src/binutils-master/gold/gdb-index.cc:404:1: warning:
stack usage might be unbounded [-Wstack-usage=]
Gdb_index_info_reader::visit_children(Dwarf_die* parent, Dwarf_die* context)
^
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c: In
function 'd_demangle':
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c:6274:1:
warning: stack usage might be unbounded [-Wstack-usage=]
d_demangle (const char *mangled, int options, size_t *palc)
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/layout.cc: In member function
'make_output_section':
/dev/shm/build-pkg-18379/src/binutils-master/gold/output.h:4758:18: warning:
'addr' may be used uninitialized in this function [-Wmaybe-uninitialized]
this->paddr_ = paddr;
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/layout.cc:1952:12: note:
'addr' was declared here
uint64_t addr;
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/gdb-index.cc: In member
function 'visit_children':
/dev/shm/build-pkg-18379/src/binutils-master/gold/gdb-index.cc:404:1: warning:
stack usage might be unbounded [-Wstack-usage=]
Gdb_index_info_reader::visit_children(Dwarf_die* parent, Dwarf_die* context)
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/gold.cc: In member function
'run':
/dev/shm/build-pkg-18379/src/binutils-master/gold/output.h:4758:18: warning:
'addr' may be used uninitialized in this function [-Wmaybe-uninitialized]
this->paddr_ = paddr;
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/layout.cc:1952:12: note:
'addr' was declared here
uint64_t addr;
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/layout.cc: In member function
'make_output_section':
/dev/shm/build-pkg-18379/src/binutils-master/gold/output.h:4758:18: warning:
'addr' may be used uninitialized in this function [-Wmaybe-uninitialized]
this->paddr_ = paddr;
^
/dev/shm/build-pkg-18379/src/binutils-master/gold/layout.cc:1952:12: note:
'addr' was declared here
uint64_t addr;
^
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c: In
function 'is_ctor_or_dtor':
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c:6480:1:
warning: stack usage might be unbounded [-Wstack-usage=]
is_ctor_or_dtor (const char *mangled,
^
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c: In
function 'd_demangle':
/dev/shm/build-pkg-18379/src/binutils-master/libiberty/cp-demangle.c:6274:1:
warning: stack usage might be unbounded [-Wstack-usage=]
d_demangle (const char *mangled, int options, size_t *palc)
^
make[4]: Leaving directory
'/dev/shm/build-pkg-18379/build/binutils-master/gold'
make[3]: Leaving directory
'/dev/shm/build-pkg-18379/build/binutils-master/gold'
make[2]: Leaving directory
'/dev/shm/build-pkg-18379/build/binutils-master/gold'
/dev/shm/build-pkg-18379/src/binutils-master/gdb/nat/linux-btrace.h:85:8:
warning: type 'struct btrace_target_info' violates the C++ One Definition Rule
[-Wodr]
struct btrace_target_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/remote.c:13103:8: note: a
different type is defined in another translation unit
struct btrace_target_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/nat/linux-btrace.h:102:5:
note: the first difference of corresponding definitions is field 'variant'
} variant;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/remote.c:13103:8: note: a type
with different number of fields is defined in another translation unit
struct btrace_target_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/linux-thread-db.c:254:8:
warning: type 'struct private_thread_info' violates the C++ One Definition Rule
[-Wodr]
struct private_thread_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/remote.c:450:8: note: a
different type is defined in another translation unit
struct private_thread_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/linux-thread-db.c:257:22:
note: the first difference of corresponding definitions is field 'dying'
unsigned int dying:1;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/remote.c:452:9: note: a field
with different name is defined in another translation unit
char *extra;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/linux-thread-db.c:1166:8:
warning: type 'struct callback_data' violates the C++ One Definition Rule
[-Wodr]
struct callback_data
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/cli/cli-dump.c:391:8: note: a
different type is defined in another translation unit
struct callback_data {
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/linux-thread-db.c:1168:26:
note: the first difference of corresponding definitions is field 'info'
struct thread_db_info *info;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/cli/cli-dump.c:392:13: note: a
field with different name is defined in another translation unit
CORE_ADDR load_offset;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/python/py-prettyprint.c:32:6:
warning: type 'string_repr_result' violates the C++ One Definition Rule [-Wodr]
enum string_repr_result
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/guile/scm-pretty-print.c:34:6:
note: an enum with different value name is defined in another translation unit
enum string_repr_result
^
ada-exp.c:283:7: warning: type 'union YYSTYPE' violates the C++ One Definition
Rule [-Wodr]
union YYSTYPE
^
c-exp.c:273:7: note: a different type is defined in another translation unit
union YYSTYPE
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/ada-exp.y:129:7: note: the
first difference of corresponding definitions is field 'typed_val'
} typed_val;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/c-exp.y:89:7: note: a field
with different name is defined in another translation unit
} typed_val_int;
^
ada-exp.c:502:7: warning: type 'union yyalloc' violates the C++ One Definition
Rule [-Wodr]
union yyalloc
^
c-exp.c:521:7: note: a different type is defined in another translation unit
union yyalloc
^
ada-exp.c:505:11: note: the first difference of corresponding definitions is
field 'yyvs_alloc'
YYSTYPE yyvs_alloc;
^
c-exp.c:524:11: note: a field of same name but different type is defined in
another translation unit
YYSTYPE yyvs_alloc;
^
ada-exp.c:305:23: note: type 'union YYSTYPE' should match type 'union YYSTYPE'
typedef union YYSTYPE YYSTYPE;
^
c-exp.c:310:23: note: the incompatible type is defined here
typedef union YYSTYPE YYSTYPE;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/c-exp.y:2862:3: warning: type
'struct token_and_value' violates the C++ One Definition Rule [-Wodr]
} token_and_value;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/d-exp.y:1332:3: note: a
different type is defined in another translation unit
} token_and_value;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/c-exp.y:2861:11: note: the
first difference of corresponding definitions is field 'value'
YYSTYPE value;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/d-exp.y:1331:11: note: a field
of same name but different type is defined in another translation unit
YYSTYPE value;
^
c-exp.c:310:23: note: type 'union YYSTYPE' should match type 'union YYSTYPE'
typedef union YYSTYPE YYSTYPE;
^
d-exp.c:265:23: note: the incompatible type is defined here
typedef union YYSTYPE YYSTYPE;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/c-exp.y:2284:8: warning: type
'struct token' violates the C++ One Definition Rule [-Wodr]
struct token
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/d-exp.y:958:8: note: a
different type is defined in another translation unit
struct token
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/c-exp.y:2289:15: note: the
first difference of corresponding definitions is field 'flags'
token_flags flags;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/d-exp.y:958:8: note: a type
with different number of fields is defined in another translation unit
struct token
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dbxread.c:70:8: warning: type
'struct symloc' violates the C++ One Definition Rule [-Wodr]
struct symloc
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/mdebugread.c:89:8: note: a
different type is defined in another translation unit
struct symloc
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dbxread.c:75:9: note: the
first difference of corresponding definitions is field 'ldsymoff'
int ldsymoff;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/mdebugread.c:92:9: note: a
field with different name is defined in another translation unit
int fdr_idx;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dwarf2read.c:1444:8: warning:
type 'struct nextfield' violates the C++ One Definition Rule [-Wodr]
struct nextfield
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/stabsread.c:57:8: note: a
different type is defined in another translation unit
struct nextfield
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dwarf2read.c:1447:7: note: the
first difference of corresponding definitions is field 'accessibility'
int accessibility;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/stabsread.c:64:7: note: a
field with different name is defined in another translation unit
int visibility;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dwarf2read.c:1474:8: warning:
type 'struct field_info' violates the C++ One Definition Rule [-Wodr]
struct field_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/stabsread.c:81:8: note: a
different type is defined in another translation unit
struct field_info
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/dwarf2read.c:1477:23: note:
the first difference of corresponding definitions is field 'fields'
struct nextfield *fields, *baseclasses;
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/stabsread.c:83:23: note: a
field with different name is defined in another translation unit
struct nextfield *list;
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal32.c:53:13:
warning: type of 'decDigitsFromDPD' does not match original declaration
[-Wlto-type-mismatch]
extern void decDigitsFromDPD(decNumber *, const uInt *, Int);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal128.c:52:13:
warning: type of 'decDigitsFromDPD' does not match original declaration
[-Wlto-type-mismatch]
extern void decDigitsFromDPD(decNumber *, const uInt *, Int);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal64.c:741:6:
note: 'decDigitsFromDPD' was previously declared here
void decDigitsFromDPD(decNumber *dn, const uInt *sour, Int declets) {
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal64.c:741:6:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal32.c:52:13:
warning: type of 'decDigitsToDPD' does not match original declaration
[-Wlto-type-mismatch]
extern void decDigitsToDPD(const decNumber *, uInt *, Int);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal128.c:53:13:
warning: type of 'decDigitsToDPD' does not match original declaration
[-Wlto-type-mismatch]
extern void decDigitsToDPD(const decNumber *, uInt *, Int);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal64.c:615:6:
note: 'decDigitsToDPD' was previously declared here
void decDigitsToDPD(const decNumber *dn, uInt *targ, Int shift) {
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/dpd/decimal64.c:615:6:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:179:16:
warning: type of 'decNumberZero' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberZero(decNumber *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:179:16:
warning: type of 'decNumberZero' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberZero(decNumber *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:179:16:
warning: type of 'decNumberZero' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberZero(decNumber *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:3582:13:
note: 'decNumberZero' was previously declared here
decNumber * decNumberZero(decNumber *dn) {
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:3582:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:150:15:
warning: type of 'decNumberPlus' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberPlus(decNumber *, const decNumber *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:150:15:
warning: type of 'decNumberPlus' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberPlus(decNumber *, const decNumber *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:150:15:
warning: type of 'decNumberPlus' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberPlus(decNumber *, const decNumber *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1875:13:
note: 'decNumberPlus' was previously declared here
decNumber * decNumberPlus(decNumber *res, const decNumber *rhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1875:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:118:15:
warning: type of 'decNumberFromString' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberFromString(decNumber *, const char *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:118:15:
warning: type of 'decNumberFromString' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberFromString(decNumber *, const char *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:118:15:
warning: type of 'decNumberFromString' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberFromString(decNumber *, const char *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:489:13:
note: 'decNumberFromString' was previously declared here
decNumber * decNumberFromString(decNumber *dn, const char chars[],
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:489:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:120:14:
warning: type of 'decNumberToEngString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToEngString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:120:14:
warning: type of 'decNumberToEngString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToEngString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:120:14:
warning: type of 'decNumberToEngString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToEngString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:464:8:
note: 'decNumberToEngString' was previously declared here
char * decNumberToEngString(const decNumber *dn, char *string){
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:464:8:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:119:14:
warning: type of 'decNumberToString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:119:14:
warning: type of 'decNumberToString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.h:119:14:
warning: type of 'decNumberToString' does not match original declaration
[-Wlto-type-mismatch]
char * decNumberToString(const decNumber *, char *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:459:8:
note: 'decNumberToString' was previously declared here
char * decNumberToString(const decNumber *dn, char *string){
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:459:8:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:278:12:
warning: type of '_rl_isearch_callback' does not match original declaration
[-Wlto-type-mismatch]
extern int _rl_isearch_callback PARAMS((_rl_search_cxt *));
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/isearch.c:686:1: note:
'_rl_isearch_callback' was previously declared here
_rl_isearch_callback (cxt)
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/isearch.c:686:1: note:
code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:433:24:
warning: type of '_rl_iscxt' does not match original declaration
[-Wlto-type-mismatch]
extern _rl_search_cxt *_rl_iscxt;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:99:3: note:
type 'struct _rl_search_cxt' should match type 'struct _rl_search_cxt'
} _rl_search_cxt;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/isearch.c:60:17: note:
'_rl_iscxt' was previously declared here
_rl_search_cxt *_rl_iscxt = 0;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/isearch.c:60:17: note:
code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:321:12:
warning: type of '_rl_nsearch_callback' does not match original declaration
[-Wlto-type-mismatch]
extern int _rl_nsearch_callback PARAMS((_rl_search_cxt *));
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/search.c:435:1: note:
'_rl_nsearch_callback' was previously declared here
_rl_nsearch_callback (cxt)
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/search.c:435:1: note:
code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:466:24:
warning: type of '_rl_nscxt' does not match original declaration
[-Wlto-type-mismatch]
extern _rl_search_cxt *_rl_nscxt;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/rlprivate.h:99:3: note:
type 'struct _rl_search_cxt' should match type 'struct _rl_search_cxt'
} _rl_search_cxt;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/search.c:55:17: note:
'_rl_nscxt' was previously declared here
_rl_search_cxt *_rl_nscxt = 0;
^
/dev/shm/build-pkg-18379/src/binutils-master/readline/search.c:55:17: note:
code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:130:15:
warning: type of 'decNumberCompare' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberCompare(decNumber *, const decNumber *, const decNumber
*, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:864:13:
note: 'decNumberCompare' was previously declared here
decNumber * decNumberCompare(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:864:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:128:15:
warning: type of 'decNumberAdd' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberAdd(decNumber *, const decNumber *, const decNumber *,
decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:770:13:
note: 'decNumberAdd' was previously declared here
decNumber * decNumberAdd(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:770:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:162:15:
warning: type of 'decNumberSubtract' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberSubtract(decNumber *, const decNumber *, const
decNumber *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:3139:13:
note: 'decNumberSubtract' was previously declared here
decNumber * decNumberSubtract(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:3139:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:147:15:
warning: type of 'decNumberMultiply' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberMultiply(decNumber *, const decNumber *, const
decNumber *, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1905:13:
note: 'decNumberMultiply' was previously declared here
decNumber * decNumberMultiply(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1905:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:134:15:
warning: type of 'decNumberDivide' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberDivide(decNumber *, const decNumber *, const decNumber
*, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:991:13:
note: 'decNumberDivide' was previously declared here
decNumber * decNumberDivide(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:991:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:151:15:
warning: type of 'decNumberPower' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberPower(decNumber *, const decNumber *, const decNumber
*, decContext *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1942:13:
note: 'decNumberPower' was previously declared here
decNumber * decNumberPower(decNumber *res, const decNumber *lhs,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:1942:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:117:15:
warning: type of 'decNumberFromUInt32' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberFromUInt32(decNumber *, uint32_t);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:358:13:
note: 'decNumberFromUInt32' was previously declared here
decNumber * decNumberFromUInt32(decNumber *dn, uInt uin) {
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:358:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/decNumber.h:116:15:
warning: type of 'decNumberFromInt32' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decNumberFromInt32(decNumber *, int32_t);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:345:13:
note: 'decNumberFromInt32' was previously declared here
decNumber * decNumberFromInt32(decNumber *dn, Int in) {
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/decNumber.c:345:13:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/dpd/decimal32.h:92:15:
warning: type of 'decimal32ToNumber' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decimal32ToNumber(const decimal32 *, decNumber *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal32.c:87:1:
note: 'decimal32ToNumber' was previously declared here
decimal32ToNumber (const decimal32 *bid32, decNumber *dn)
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal32.c:87:1:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/dpd/decimal64.h:94:15:
warning: type of 'decimal64ToNumber' does not match original declaration
[-Wlto-type-mismatch]
decNumber * decimal64ToNumber(const decimal64 *, decNumber *);
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal64.c:87:1:
note: 'decimal64ToNumber' was previously declared here
decimal64ToNumber (const decimal64 *bid64, decNumber *dn)
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal64.c:87:1:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/dpd/decimal32.h:90:15:
warning: type of 'decimal32FromNumber' does not match original declaration
[-Wlto-type-mismatch]
decimal32 * decimal32FromNumber(decimal32 *, const decNumber *,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal32.c:58:1:
note: 'decimal32FromNumber' was previously declared here
decimal32FromNumber (decimal32 *d32, const decNumber *dn,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal32.c:58:1:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/../libdecnumber/dpd/decimal64.h:92:15:
warning: type of 'decimal64FromNumber' does not match original declaration
[-Wlto-type-mismatch]
decimal64 * decimal64FromNumber(decimal64 *, const decNumber *,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal64.c:58:1:
note: 'decimal64FromNumber' was previously declared here
decimal64FromNumber (decimal64 *d64, const decNumber *dn,
^
/dev/shm/build-pkg-18379/src/binutils-master/libdecnumber/bid/decimal64.c:58:1:
note: code may be misoptimized unless -fno-strict-aliasing is used
/dev/shm/build-pkg-18379/src/binutils-master/gdb/maint.c:704:12: warning: type
of 'main' does not match original declaration [-Wlto-type-mismatch]
extern int main ();
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/gdb.c:24:1: note: type
mismatch in parameter 1
main (int argc, char **argv)
^
/dev/shm/build-pkg-18379/src/binutils-master/gdb/gdb.c:24:1: note: type 'int'
should match type 'void'
/dev/shm/build-pkg-18379/src/binutils-master/gdb/gdb.c:24:1: note: 'main' was
previously declared here
In function 'tui_set_locator_fullname',
inlined from 'tui_show_disassem_and_update_source' at
/dev/shm/build-pkg-18379/src/binutils-master/gdb/tui/tui-stack.c:346:28,
inlined from '_Z35tui_update_source_windows_with_addrP7gdbarchy.part.1' at
/dev/shm/build-pkg-18379/src/binutils-master/gdb/tui/tui-winsource.c:149:40,
inlined from 'tui_update_source_windows_with_addr':
/dev/shm/build-pkg-18379/src/binutils-master/gdb/tui/tui.c:570:10: warning:
'strncat': specified bound between 2147487746 and 4294967295 exceeds maximum
object size 2147483647 [-Wstringop-overflow=]
strncat (buf, item_to_add, (buflen - strlen (buf)));
^
/tmp/ccUhQauM.ltrans0.ltrans.o: In function
`amd64_x32_linux_init_abi(gdbarch_info, gdbarch*) [clone .lto_priv.3305]':
<artificial>:(.text+0x290c9): undefined reference to
`amd64_create_target_description(unsigned long long, bool, bool)'
/tmp/ccUhQauM.ltrans0.ltrans.o: In function `amd64_linux_init_abi(gdbarch_info,
gdbarch*) [clone .lto_priv.3304]':
<artificial>:(.text+0x29999): undefined reference to
`amd64_create_target_description(unsigned long long, bool, bool)'
/tmp/ccUhQauM.ltrans0.ltrans.o: In function
`amd64_linux_core_read_description(gdbarch*, target_ops*, bfd*)':
<artificial>:(.text+0x29c98): undefined reference to
`amd64_create_target_description(unsigned long long, bool, bool)'
/tmp/ccUhQauM.ltrans20.ltrans.o: In function `initialize_all_files()':
<artificial>:(.text+0x13ff0): undefined reference to
`amd64_create_target_description(unsigned long long, bool, bool)'
<artificial>:(.text+0x1728e): undefined reference to
`amd64_create_target_description(unsigned long long, bool, bool)'
/tmp/ccUhQauM.ltrans20.ltrans.o:<artificial>:(.text+0x172d4): more undefined
references to `amd64_create_target_description(unsigned long long, bool, bool)'
follow
collect2: error: ld returned 1 exit status
make[2]: *** [Makefile:2248: gdb] Error 1
make[2]: Leaving directory '/dev/shm/build-pkg-18379/build/binutils-master/gdb'
make[1]: *** [Makefile:10741: all-gdb] Error 2
make[1]: Leaving directory '/dev/shm/build-pkg-18379/build/binutils-master'
make: *** [Makefile:850: all] Error 2
--
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>From gdb-prs-return-21897-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Sep 07 12:10:06 2017
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From: "sven.c.dack at sky dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22102] 32-bit gdb build fails with undefined reference to
amd64_create_target_description
Date: Fri, 08 Sep 2017 22:20:00 -0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gdb
X-Bugzilla-Component: build
X-Bugzilla-Version: HEAD
X-Bugzilla-Keywords:
X-Bugzilla-Severity: critical
X-Bugzilla-Who: sven.c.dack at sky dot com
X-Bugzilla-Status: UNCONFIRMED
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Sven <sven.c.dack at sky dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |i686-pc-linux-gnu
--- Comment #1 from Sven <sven.c.dack at sky dot com> ---
The bug seems to have been introduced with
commit 22916b0786336394bf84f68ba71875ac3cd48fea (HEAD)
Author: Yao Qi <yao.qi@linaro.org>
Date: Tue Sep 5 09:54:54 2017 +0100
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Subject: [Bug python/15622] no "new thread" event
Date: Fri, 08 Sep 2017 23:30:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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>From gdb-prs-return-21899-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Sep 08 23:30:53 2017
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From: "temp4746 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug remote/16622] set sysroot remote: is not enough for set
debug-file-directory
Date: Mon, 11 Sep 2017 02:15:00 -0000
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--- Comment #1 from temp4746 at gmail dot com ---
There are probably multiple causes for this not working.
One is that the colon character is used as a separator for debug-file-directory
so instead of search for "target:/usr/lib/debug/<...>" it will search for
"target/<...>" and "/usr/lib/debug/<...>" locally.
And since the directory to search for a symbol file for a remote file already
has a "target:" prefix (if I understood the code correctly), than it will be
looking for /usr/lib/debug/target:/.../<...> locally anyhow. The "target:"
prefix will be in the middle of the path.
A newer gdb with "set debug separate-debug-file 1" can help show what is going
on.
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From: "stephen.kim at oracle dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug symtab/21695] Loss of line info
Date: Mon, 11 Sep 2017 02:44:00 -0000
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--- Comment #4 from Stephen Kim <stephen.kim at oracle dot com> ---
Hi, all,
I could not reproduce this bug. Here are my configurations:
I have an Ubuntu box:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.10
Release: 16.10
Codename: yakkety
It comes up with a binary package for the cross compiler:
$ arm-none-eabi-gcc --version
arm-none-eabi-gcc (15:4.9.3+svn231177-1) 4.9.3 20150529 (prerelease)
Copyright (C) 2014 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
I think I configured my GDB with the options in this bug report, and the
version is:
$ ./gdb --version
GNU gdb (GDB) 8.0.50.20170908-git
The test case was from:
https://bugs.launchpad.net/gcc-arm-embedded/+bug/1700646
There was a batch file as far as I remember it. I made a bash script from it as
follows:
$ cat ./build.sh
#!/bin/bash
arm-none-eabi-gcc -O0 -fno-common -fpie -ffunction-sections -fdata-sections
-Wall -mcpu=cortex-m0 -mthumb -mfloat-abi=soft -g3 -T"linker_script.ld"
-Wl,-Map,gdb_test.map,--gc-sections,-emain -nostdlib main.c -o gdb_test2.elf
arm-none-eabi-objcopy --output-target binary gdb_test2.elf gdb_test2.bin
Then, I did what is described in this bug report:
$ ./gdb
GNU gdb (GDB) 8.0.50.20170908-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) add-symbol-file ./gdb_test2.elf 0x1fff0000
add symbol table from file "./gdb_test2.elf" at
.text_addr = 0x1fff0000
The bug was not reproducible. Would you check if the bug is gone in the
8..50-20170908 GDB? Otherwise, I guess the difference would be the compiler we
used.
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Subject: [Bug testsuite/19127] func sum and func print_average fail in
dbx.exp
Date: Mon, 11 Sep 2017 02:48:00 -0000
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Stephen Kim <stephen.kim at oracle dot com> changed:
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CC| |stephen.kim at oracle dot com
--- Comment #1 from Stephen Kim <stephen.kim at oracle dot com> ---
It seems to me that nobody has taken this bug yet. As I would like to work on
this bug, I am leaving this comment here.
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Subject: [Bug symtab/21695] Loss of line info
Date: Mon, 11 Sep 2017 20:27:00 -0000
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--- Comment #5 from Stephen Kim <stephen.kim at oracle dot com> ---
(y or n) y
Reading symbols from ./gdb_test2.elf...done.
(gdb) br main
Breakpoint 1 at 0x1fff0000
I cannot modify my comments. The add-symbol-file command asked a "yes or no"
question above. I answered "y" to it, and was able to set a break point with
the address of main, I believe.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/15622] no "new thread" event
Date: Mon, 11 Sep 2017 20:31:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960
commit 7c96f8c1dae023c7d0b1cabc5e50c4d18fd06960
Author: Tom Tromey <tom@tromey.com>
Date: Tue Sep 5 12:07:00 2017 -0600
Add new_inferior, inferior_deleted, and new_thread events
This adds a few new events to gdb's Python layer: new_inferior,
inferior_deleted, and new_thread. I wanted to be able to add a
combined inferior/thread display window to my GUI, and I needed a few
events to make this work. This is PR python/15622.
ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
PR python/15622:
* NEWS: Add entry.
* python/python.c (do_start_initialization): Initialize new event
types.
* python/python-internal.h (gdbpy_initialize_new_inferior_event)
(gdbpy_initialize_inferior_deleted_event)
(gdbpy_initialize_new_thread_event): Declare.
* python/py-threadevent.c (create_thread_event_object): Add option
"thread" parameter.
* python/py-inferior.c (new_thread_event_object_type)
(new_inferior_event_object_type)
(inferior_deleted_event_object_type): Declare.
(python_new_inferior, python_inferior_deleted): New functions.
(add_thread_object): Emit new_thread event.
(gdbpy_initialize_inferior): Attach new functions to corresponding
observers.
(new_thread, new_inferior, inferior_deleted): Define new event
types.
* python/py-evts.c (gdbpy_initialize_py_events): Add new
registries.
* python/py-events.h (events_object) <new_inferior,
inferior_deleted, new_thread>: New fields.
* python/py-event.h (create_thread_event_breakpoint): Add optional
"thread" parameter.
doc/ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
* python.texi (Events In Python): Document new events.
testsuite/ChangeLog
2017-09-11 Tom Tromey <tom@tromey.com>
* gdb.python/py-infthread.exp: Add tests for new_thread event.
* gdb.python/py-inferior.exp: Add tests for new inferior events.
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #3 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug breakpoints/21870] aarch64: Leftover uncleared debug registers
Date: Tue, 12 Sep 2017 14:33:00 -0000
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weimin.pan at oracle dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |weimin.pan at oracle dot com
--- Comment #1 from weimin.pan at oracle dot com ---
Looks like it's the kernel that set these control registers with non-zero
values. To experiment and verify the new register contents, just added a
PTRACE_GETREGSET call, immediately following the PTRACE_SETREGSET call in
aarch64_linux_set_debug_regs().
Register contents for the PTRACE_SETREGSET call:
gdb) p/x regs
$3 = {dbg_info = 0x0, pad = 0x0, dbg_regs = {{addr = 0x0, ctrl = 0x0,
pad = 0x0} <repeats 16 times>}}
588 if (ptrace (PTRACE_SETREGSET, tid,
(gdb) n
596 if (ptrace (PTRACE_GETREGSET, tid, NT_ARM_HW_WATCH, &iov) == 0)
(gdb) n
598 regs.dbg_regs[0].addr, regs.dbg_regs[0].ctrl);
After the PTRACE_GETREGSET call:
(gdb) p/x regs
$4 = {dbg_info = 0x604, pad = 0x0, dbg_regs = {{addr = 0x0, ctrl = 0x1fc,
pad = 0x0}, {addr = 0x0, ctrl = 0x1fc, pad = 0x0}, {addr = 0x0,
ctrl = 0x1fc, pad = 0x0}, {addr = 0x0, ctrl = 0x1fc, pad = 0x0}, {
addr = 0x0, ctrl = 0x0, pad = 0x0} <repeats 12 times>}}
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Subject: [Bug cli/16238] "show user" doesn't complete properly
Date: Thu, 14 Sep 2017 17:21:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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CC| |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Tripped over this again, went to file a bug, and saw that I already had.
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From: "aboya at igalia dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug server/22137] New: gdbserver crashes on hosts with pkru
register
Date: Thu, 14 Sep 2017 17:53:00 -0000
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Bug ID: 22137
Summary: gdbserver crashes on hosts with pkru register
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: server
Assignee: unassigned at sourceware dot org
Reporter: aboya at igalia dot com
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How to reproduce (as a Bash snippet):
cat > /tmp/a.c <<EOF
#include <stdio.h>
int main(int argc, char** argv) {
puts("hi\n");
return 0;
}
EOF
gcc -g -O0 -o /tmp/a /tmp/a.c
gdbserver localhost:5000 /tmp/a &
gdb -q /tmp/a <<EOF
target remote localhost:5000
quit
EOF
Expected behavior:
The client connects to the server and quits without errors.
Actual behavior:
The server crashes when the client connects:
Remote debugging from host 127.0.0.1
../../../gdb/gdbserver/regcache.c:264: A problem internal to GDBserver has been
detected.
Unknown register pkru requested
This is only reproducible in hosts that support the Intel Protection Keys for
Userspace x86 extension (lscpu |grep -w pku).
Version:
GNU gdbserver (GDB) Fedora 8.0.1-26.fc26
GNU gdb (GDB) Fedora 8.0.1-26.fc26
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
Date: Thu, 14 Sep 2017 19:52:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |palves at redhat dot com,
| |walfred.tedeschi at intel dot com
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From: "Jim_Muchow at Dell dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/20020] GDB segfault on printing objects
Date: Fri, 15 Sep 2017 19:59:00 -0000
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Jim Muchow <Jim_Muchow at Dell dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |Jim_Muchow at Dell dot com
--- Comment #7 from Jim Muchow <Jim_Muchow at Dell dot com> ---
This is very interesting; I thought it was only me that experienced this. I
have been looking into this issue, off and on (tho' mostly off) for some
months. I have found that it can be avoided in our situation, by running "set
print static-members off" either by hand or in .gdbinit.
While I agree with Thilo's approach below of testing for a NULL-pointer before
calling cp_print_static_field(), it seems to me that this may not actually fix
the problem - and perhaps cause another.
I was concerned with the latter case because if gdb was unable to find a
variable (in the call to value_static_field()), then perhaps it is better to
crash (perhaps using gdb_assert())? This call to value_static_field() after all
occurs in a for-loop and so perhaps the problem worsens ignoring by the
NULL-pointer? Maybe? I defer to Thilo's experience in this regard; if the fix
seems to work with no side effect, great.
I bring up the problem of something else being the real source of the problem
because I found in my cases that GDB was trying to reference a variable that I
couldn't even find (ie, the cause of the NULL-pointer). In my case there was a
C++ template:
template<class BlockConfigurator>
class BlockHolder
{
...
static const uns32 DEBUGLOG_ENUM_LOGALL = 0xFFFFFFFF;
}
During investigation, I discovered that the symbol is not even present in the
output of "objdump -t <path>/binary_unstripped". I made the assumption that the
symbol was a prime candidate to be optimized out since it is static, const, and
with a predefined value. I also assumed that if I used a debug build, that the
symbol was more likely to be found. Oddly, it wasn't.
In short, this looks like a situation in which the compiler/linker have
conspired, so to speak, against gdb. I'm not really sure there is anything that
can be done in this situation except add various conditionals like Thilo's to
avoid the problem.
Regards,
Jim Muchow
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From: "bgraham at technosofteng dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22143] New: gdb dies in E2 Studio
Date: Sun, 17 Sep 2017 15:37:00 -0000
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See console output below.
[338 ssp\src\framework\el\tx\tx_src\synergy\tx_thread_schedule.c: No such
file or directory.
Thread 1.1] #1 stopped.
_skip_vfp_restore () at
ssp\src\framework\el\tx\tx_src\synergy\tx_thread_schedule.c:338
../../ARM_python_GDB/gdb/inline-frame.c:169: internal-error:
inline_frame_this_id: Assertion `frame_id_p (*this_id)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
../../ARM_python_GDB/gdb/inline-frame.c:169: internal-error:
inline_frame_this_id: Assertion `frame_id_p (*this_id)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information.
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Subject: [Bug python/18621] No "frame change" event
Date: Mon, 18 Sep 2017 21:01:00 -0000
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----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |OBSOLETE
--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
It seems to me that any sort of frame-changed event could
only be triggered before a prompt. So, anybody needing this
could synthesize it pretty easily.
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22102] 32-bit gdb build fails with undefined reference to
amd64_create_target_description
Date: Tue, 19 Sep 2017 00:33:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Sven from comment #1)
> The bug seems to have been introduced with
>
> commit 22916b0786336394bf84f68ba71875ac3cd48fea (HEAD)
> Author: Yao Qi <yao.qi@linaro.org>
> Date: Tue Sep 5 09:54:54 2017 +0100
The build failure should be fixed by this patch,
https://sourceware.org/ml/gdb-patches/2017-09/msg00403.html
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From: "walfred.tedeschi at intel dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
Date: Wed, 20 Sep 2017 13:19:00 -0000
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--- Comment #1 from Walfred Tedeschi <walfred.tedeschi at intel dot com> ---
Created attachment 10433
--> https://sourceware.org/bugzilla/attachment.cgi?id=10433&action=edit
Previous commiter did not regenerated the dat files.
Partially added to Master branch by Yao.
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
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--- Comment #2 from Walfred Tedeschi <walfred.tedeschi at intel dot com> ---
Bug is confirmed.
Patch should fix the issue.
Thanks and regards,
/Fred
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Subject: [Bug c++/14186] const volatile is ignored for TYPE_INSTANCE
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Keith informed me today that I fixed this PR with this patch:
https://sourceware.org/ml/gdb-patches/2017-07/msg00147.html
commit 3693fdb3c8ec14bd8ecb4ebb39e4384b330a2999
Author: Pedro Alves <palves@redhat.com>
AuthorDate: Mon Sep 4 20:21:16 2017 +0100
Make "p S::method() const::static_var" work too
Somehow I completely managed to overlook that that caused:
KPASS: gdb.cp/cpexprs.exp: p CV::m(int) const (PRMS c++/14186)
KPASS: gdb.cp/cpexprs.exp: p CV::m(int) volatile (PRMS c++/14186)
KPASS: gdb.cp/cpexprs.exp: p CV::m(int) const volatile (PRMS c++/14186)
It pains me to realize that this had a partially written patch here...
There are some similarities, and some differences; In your version from 2012,
it seems like you avoided touching dwarf2read.c, with the "inexact_match"
check in value_struct_elt_for_reference, but I'm not really sure I understand
that. And now I'm wondering whether we're missing something in master around
overload resolution, since in the use case I was aiming for [accessing local
statics], I was only thinking of exact matches.
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From: "zontik77 at poczta dot fm" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/22177] New: set detach-on-fork off does not work
properly
Date: Thu, 21 Sep 2017 16:30:00 -0000
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Bug ID: 22177
Summary: set detach-on-fork off does not work properly
Product: gdb
Version: 8.0.1
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Reporter: zontik77 at poczta dot fm
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Even for the simplest fork c program (no shared libs etc.) it is impossible to
turn off detaching processes. After fork with this option set (set
detach-on-fork off) there is always the same info from the GDB :
...
(gdb) n
Single stepping until exit from function fork,
which has no line number information.
[New process <...> ]
Reading symbols from <...>
Warning:
Cannot insert breakpoint <...>.
Cannot access memory at address <...>
(gdb) n
Cannot find the bound of the current function
...
My gcc version : 7.2.0-2
My kernel version: 4.12.13-1
My gdb version :8.0.1-1
Bush fix: downgrading gdb from 8.0.1-1 to 8.0.1 fixed the problem.
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Subject: [Bug threads/22177] set detach-on-fork off does not work properly
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Subject: [Bug gdb/15828] GDB crashed during process attachment when that
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
I cannot reproduce it, do you still have it reproducible?
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From: "ro at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22185] New: Obsolete/remove support for Solaris < 10
Date: Fri, 22 Sep 2017 14:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22185
Bug ID: 22185
Summary: Obsolete/remove support for Solaris < 10
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: ro at gcc dot gnu.org
Reporter: ro at gcc dot gnu.org
Target Milestone: 8.1
Target: *-*-solaris2.[01], *-*-solaris2.[2-9]*
This is tracking bug according to
https://sourceware.org/gdb/wiki/Internals%20Obsoleting-code:
GCC has obsoleted/removed support for Solaris 9 in GCC 4.9/5 in 2013:
https://gcc.gnu.org/gcc-4.9/changes.html
https://gcc.gnu.org/ml/gcc-patches/2013-05/msg00728.html
While gdb 7.12.1 can still be built (only with --disable-build-with-cxx), the
8.0 branch and trunk cannot, and it seems a waste of time to even try to make
it
work.
Therefore, support will be removed for the gdb 8.1 release.
Rainer
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From: "ro at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22185] Obsolete/remove support for Solaris < 10
Date: Fri, 22 Sep 2017 16:26:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
URL| |https://sourceware.org/ml/g
| |db-patches/2017-09/msg00674
| |.html
--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Patch posted.
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From: "dilyan.palauzov at aegee dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug compile/22188] New: gdb/arm-tdep.c:6449: (rn & 0xe) == 0x1 -
tautology
Date: Fri, 22 Sep 2017 21:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22188
Bug ID: 22188
Summary: gdb/arm-tdep.c:6449: (rn & 0xe) == 0x1 - tautology
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Compiling with GCC 8 I get:
binutils-gdb/gdb/arm-tdep.c: In function ‘int
arm_decode_misc_memhint_neon(gdbarch*, uint32_t, regcache*,
displaced_step_closure*)’:
binutils-gdb/gdb/arm-tdep.c:6449:52: error: bitwise comparison always evaluates
to false [-Werror=tautological-compare]
else if (op1 == 0x10 && op2 == 0x0 && (rn & 0xe) == 0x1)
~~~~~~~~~~~^~~~~~
Indeed (whatever & 0xe) cannot have zero as least significant bit.
Likewise
binutils-gdb/gdb/rs6000-tdep.c: In function ‘CORE_ADDR skip_prologue(gdbarch*,
CORE_ADDR, CORE_ADDR, rs6000_framedata*)’:
binutils-gdb/gdb/rs6000-tdep.c:1859:34: error: bitwise comparison always
evaluates to false [-Werror=tautological-compare]
else if ((op & 0xfc1f016a) == 0x7c01016e)
~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
op & 0x....a cannot be 0x....e
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/22177] set detach-on-fork off does not work properly
Date: Sun, 24 Sep 2017 04:32:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the bug report.
There is no "8.0.1-1" release; this is usually an indicative of a distribution
version. Are you using a specific GNU/Linux distribution? If yes, can you
reproduce the bug using the upstream GDB repository?
Thanks.
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From: "ciro.santilli at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22195] New: Provide a help() method to gdb.Command that
overrides the docstring
Date: Sun, 24 Sep 2017 13:04:00 -0000
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Bug ID: 22195
Summary: Provide a help() method to gdb.Command that overrides
the docstring
Product: gdb
Version: 7.11.1
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I want to use pythons argparse for command parameter handling after
gdb.string_to_argv
If I had a method:
define help():
that would override the class docstring for:
help mycmd
I could return:
return parser.format_usage()
there and everything would be DRY and beautiful.
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From: "stephen.kim at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/19127] func sum and func print_average fail in
dbx.exp
Date: Sun, 24 Sep 2017 13:06:00 -0000
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--- Comment #2 from Stephen Kim <stephen.kim at oracle dot com> ---
The last comment was 2015-10-14. As of Sep. 24th 2017 in Tokyo time, I have
done the following, and it does not look like the bug is reproducible. If I am
mistaken somewhere, please, let me know.
1. arm-none-eabi-gcc/g++
- Downloaded binaries from
https://developer.arm.com/open-source/gnu-toolchain/gnu-rm/downloads
2. gdb
a. as of the date above, git clone as follows:
git clone git://sourceware.org/git/binutils-gdb.git gdb_arm
b. configure'd as follows:
mkdir build
cd build; ../configure --target=arm-none-eabi --with-libexpat --with-lzma=no
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --with-python=no
c. make
After 1 and 2 are done, the following command was run and 5 failures were
reported:
make check RUNTESTFLAGS="CFLAGS_FOR_TARGET='--specs=nosys.specs'
gdb.base/dbx.exp"
However, when I looked into the gdb.log, it seems like all failures were due to
that the debugee was not really running. According to the gdb.log from another
gdb on and for x86, I tried to run the gdb commands in the test case one by
one.
Only that I should have added 'target sim' and 'load' command. Please, see
below:
aion1223@localhost ~/workspace/srcs/gdb_arm/build $
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../gdb/gdb -nw -nx
-data-directory
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../data-directory
--dbx
GNU gdb (GDB) 8.0.50.20170924-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-linux-gnu --target=arm-none-eabi".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) set height 0
(gdb) set width 0
(gdb) use
Reinitialize source path to empty? (y or n) y
Source directories searched: $cdir:$cwd
(gdb) use
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base
Source directories searched:
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base:$cdir:$cwd
(gdb) symbol-file
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/outputs/gdb.base/dbx/dbx
Reading symbols from
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/outputs/gdb.base/dbx/dbx...done.
(gdb) exec-file
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/outputs/gdb.base/dbx/dbx
(gdb) stop in main
Breakpoint 1 at 0x82d8: file
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c,
line 25.
(gdb) status
Num Type Disp Enb Address What
1 breakpoint keep y 0x000082d8 in main at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:25
(gdb) stop at average.c:30
Breakpoint 2 at 0x8300: file
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c,
line 30.
(gdb) stop in average.c:30
Usage: stop in <function | address>
(gdb) stop at main
Usage: stop at <line>
(gdb) run
Don't know how to run. Try "help target".
(gdb) target sim
Connected to the simulator.
(gdb) load
Loading section .init, size 0x18 lma 0x8000
Loading section .text, size 0xa844 lma 0x8018
Loading section .fini, size 0x18 lma 0x1285c
Loading section .rodata, size 0x2d5 lma 0x12878
Loading section .ARM.exidx, size 0x8 lma 0x12b50
Loading section .eh_frame, size 0x4 lma 0x12b58
Loading section .init_array, size 0x8 lma 0x22b5c
Loading section .fini_array, size 0x4 lma 0x22b64
Loading section .jcr, size 0x4 lma 0x22b68
Loading section .data, size 0x9d8 lma 0x22b70
Start address 0x8130
Transfer rate: 371176 bits in <1 sec.
(gdb) run
Starting program:
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/outputs/gdb.base/dbx/dbx
Breakpoint 1, main () at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:25
25 int first = 0, last = 0; /* stop-in-main */
(gdb) assign first=1
(gdb) print first
$1 = 1
(gdb) whereis my_list
All variables matching regular expression "my_list":
File
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:
static int my_list[10];
(gdb) file average.c:1
1 /* This is a sample program for the HP WDB debugger. */
2
3 #include <stdio.h>
4 #include <stdlib.h>
5
6 extern int sum(int *, int, int);
7
8 #define num 10
9
10 static int my_list[num] = {3,4,2,0,2,1,8,3,6,7};
(gdb) cont
Continuing.
Breakpoint 2, main () at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:30
30 print_average (my_list, first, last - 3); /* stop-at-call */
(gdb) step
print_average (list=0x22b74 <my_list>, low=0, high=6) at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:14
14 int total = 0, num_elements = 0, average = 0;
(gdb) func sum
'sum' not within current stack frame.
(gdb) stop in sum
Breakpoint 3 at 0x833c: file
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/sum.c,
line 6.
(gdb) cont
Continuing.
Breakpoint 3, sum (list=0x22b74 <my_list>, low=0, high=6) at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/sum.c:6
6 int i = 0, s = 0; /* stop-in-sum */
(gdb) func print_average
#1 0x00008284 in print_average (list=0x22b74 <my_list>, low=0, high=6) at
/home/aion1223/workspace/srcs/gdb_arm/build/gdb/testsuite/../../../gdb/testsuite/gdb.base/average.c:15
15 total = sum(list, low, high);
I believe that the output is as expected. In other words, GDB on and for x86
passes this test case, and the output above seems the same. I am not sure if
this bug is reproducible.
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Subject: [Bug breakpoints/22198] New: Allow skip -gfi globs to match
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E.g., I'd like to do:
skip -gfi /usr/include/c++/**/*.h
to skip all C++ standard library files, in particular entering unique_ptr.
The ** part does not work.
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From: "ro at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug build/22206] New: [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Mon, 25 Sep 2017 14:36:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22206
Bug ID: 22206
Summary: [8.1 regression] SPARC M7 ADI patches break Solaris
build
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
Component: build
Assignee: unassigned at sourceware dot org
Reporter: ro at gcc dot gnu.org
CC: weimin.pan at oracle dot com
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Target: sparc*-sun-solaris2.*
Created attachment 10480
--> https://sourceware.org/bugzilla/attachment.cgi?id=10480&action=edit
Minimal patch
The recent SPARC M7 ADI patches break the gdb build on Solaris/SPARC
(which is a total shame: feels like one side of Oracle doesn't care about what
the
other side is doing ;-(). I'm seeing it on Solaris 10/SPARC, haven't tried
11.3
or 11.4 beta yet:
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1876:0: error: "PSR_ICC"
redefined [-Werror]
#define PSR_ICC 0x00f00000
^
In file included from /usr/include/v7/sys/privregs.h:24:0,
from /usr/include/sys/regset.h:420,
from /usr/include/sys/ucontext.h:21,
from /usr/include/sys/signal.h:231,
from /usr/include/sys/procset.h:23,
from /usr/include/sys/wait.h:25,
from /usr/include/stdlib.h:21,
from build-gnulib/import/stdlib.h:36,
from /vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:35:0: note: this is the location of the previous
definition
#define PSR_ICC 0x00F00000 /* integer condition codes */
^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1878:0: error: "PSR_IMPL"
redefined [-Werror]
#define PSR_IMPL 0xf0000000
^
In file included from /usr/include/v7/sys/privregs.h:24:0,
from /usr/include/sys/regset.h:420,
from /usr/include/sys/ucontext.h:21,
from /usr/include/sys/signal.h:231,
from /usr/include/sys/procset.h:23,
from /usr/include/sys/wait.h:25,
from /usr/include/stdlib.h:21,
from build-gnulib/import/stdlib.h:36,
from /vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:41:0: note: this is the location of the previous
definition
#define PSR_IMPL 0xF0000000 /* implementation */
^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function ‘int adi_tag_fd()’:
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:296:63: error: format ‘%d’
expects argument of type ‘int’, but argument 4 has type ‘pid_t {aka long int}’
[-Werror=format=]
snprintf (cl_name, sizeof(cl_name), "/proc/%d/adi/tags", pid);
^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function ‘bool
adi_is_addr_mapped(CORE_ADDR, std::size_t)’:
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:314:64: error: format ‘%d’
expects argument of type ‘int’, but argument 4 has type ‘pid_t {aka long int}’
[-Werror=format=]
snprintf (filename, sizeof filename, "/proc/%d/adi/maps", pid);
^
The attached patch at least allows the build to finish, but there are way
more problems with this code (only from a quick inspection):
* The Solaris/SPARC codes doesn't make use of/support ADI; it's currently
Linux-only.
* Some of the new code in sparc64-tdep.c is Linux-specific, although this is
supposed to be platform-independent code:
** ADI support in procfs is way different from the way used here, which is
Linux-specific.
** Same for ADI support in auxv: none of AT_ADI_BLKSZ, AT_ADI_NBITS, and
AT_ADI_UEONADI exist on Solaris, and the latter is unused beside its
definition.
Rainer
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From: "ro at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Tue, 26 Sep 2017 05:43:00 -0000
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From: "matthias291999 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22208] Deadlock in watchpoint handling
Date: Tue, 26 Sep 2017 05:48:00 -0000
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>From gdb-prs-return-21933-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Sep 26 05:43:09 2017
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Subject: [Bug breakpoints/22208] New: Deadlock in watchpoint handling
Date: Tue, 26 Sep 2017 05:48:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22208
Bug ID: 22208
Summary: Deadlock in watchpoint handling
Product: gdb
Version: 7.12
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When i use::
>watch *(long int)$rsp
>command
>silent
>si
>end
I am also using pwndbg
Then ni a few times.
Gdb enters a deadlock, polling for something...
The stack & registers of the deadlocked process... I am using Ubuntu 17.04
RAX 0xfffffffffffffdfc
RBX 0xffffffff
RCX 0x7efbf5bf5d70 (__poll_nocancel+7) ◂— cmp rax, -0xfff
RDX 0xffffffff
RDI 0x565558f4fb60 ◂— 0x100000003
RSI 0x3
R8 0x7efbf5ebc750 (_IO_stdfile_2_lock) ◂— 0x0
R9 0x7efbf7fba780 ◂— 0x7efbf7fba780
R10 0x8
*R11 0x346
R12 0x0
R13 0x5655581c8950 —▸ 0x565555e2bcb8 —▸ 0x565555758430
(linux_ptrace_test_ret_to_nx_instr+992351) ◂— lea rax, [rip + 0x6d3881]
R14 0x56555580b3a0 ◂— push rbx
R15 0x565555a73980 ◂— add byte ptr [rax], al
RBP 0x565555f31db0 ◂— 0x0
RSP 0x7ffbffffa898 —▸ 0x5655557b2f31 ◂— cmp eax, -1
RIP 0x7efbf5bf5d70 (__poll_nocancel+7) ◂— cmp rax, -0xfff
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21328] checkpoint deadlock
Date: Tue, 26 Sep 2017 09:10:00 -0000
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Matthias Zimmerman <matthias291999 at gmail dot com> changed:
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--- Comment #1 from Matthias Zimmerman <matthias291999 at gmail dot com> ---
This is not a bug, you have a breakpoint in an area that you later call from
gdb, ie
>break exit
>p exit()
<The program being debugged was signaled while in a function called from GDB.
<GDB remains in the frame where the signal was received.
<To change this behavior use "set unwindonsignal on".
<Evaluation of the expression containing the function
Sometimes you can type `ret` until you get back to the right code, but not
always.
The stack and registers(if mangled) will not be restored(your program may go
into unintended areas) ie a while loop, in a state where it is a infinite loop.
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>From gdb-prs-return-21936-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Sep 26 09:10:18 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22211] New: gdb 8.0.1 x86_64 thread.c:1123: internal-error:
void finish_thread_state(ptid_t): Assertion `tp' failed.
Date: Tue, 26 Sep 2017 09:37:00 -0000
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Bug ID: 22211
Summary: gdb 8.0.1 x86_64 thread.c:1123: internal-error: void
finish_thread_state(ptid_t): Assertion `tp' failed.
Product: gdb
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Created attachment 10485
--> https://sourceware.org/bugzilla/attachment.cgi?id=10485&action=edit
code and python script to reproduce
gdb 8.0.1 arch linux package
Linux 4.12.13-1-ARCH #1 SMP PREEMPT Fri Sep 15 06:36:43 UTC 2017 x86_64
GNU/Linux
Code and script to reproduce: see attachment or
https://github.com/spacejam/gdb-bug
Description:
Two threads are run one at a time in non-stop mode until they reach a "stop"
breakpoint. Then we "run" and gdb crashes when in thread.c at
finish_thread_state
Crash log:
GNU gdb (GDB) 8.0.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
seeding with 752097355547
+file target/debug/race
warning: Missing auto-load script at offset 0 in section .debug_gdb_scripts
of file /home/t/src/gdb-bug/target/debug/race.
Use `info auto-load python-scripts [REGEXP]' to list them.
+set non-stop on
+set confirm off
+b src/main.rs:8
Breakpoint 1 at 0xf0f2: file src/main.rs, line 8.
+r
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff6bff700 (LWP 20352)]
[New Thread 0x7ffff69fe700 (LWP 20353)]
Thread 2 "race" hit Breakpoint 1, race::bad_txn () at src/main.rs:8
8 if A.load(SeqCst) == 0 {
(gdb) running schedule
+d
Breakpoint 2 at 0x5555555630f2: file src/main.rs, line 8.
Breakpoint 3 at 0x55555556312a: file src/main.rs, line 9.
Breakpoint 4 at 0x555555596e71: file /checkout/src/liballoc/boxed.rs, line 241.
Breakpoint 5 at 0x55555556330a: file src/main.rs, line 12.
+t 2
[Switching to thread 2 (Thread 0x7ffff6bff700 (LWP 20352))]
#0 race::bad_txn () at src/main.rs:8
8 if A.load(SeqCst) == 0 {
+c
Selected thread is running.
(gdb) thread 2 hit breakpoint at src/main.rs:9
+t 2
[Switching to thread 2 (Thread 0x7ffff6bff700 (LWP 20352))]
#0 race::bad_txn () at src/main.rs:9
9 A.fetch_add(10, SeqCst);
+c
Selected thread is running.
(gdb) success!
+t 3
[Switching to thread 3 (Thread 0x7ffff69fe700 (LWP 20353))]
#0 race::bad_txn () at src/main.rs:8
8 if A.load(SeqCst) == 0 {
+c
Selected thread is running.
(gdb) restarting execution after running out of valid threads
+k
+file target/debug/race
warning: Missing auto-load script at offset 0 in section .debug_gdb_scripts
of file /home/t/src/gdb-bug/target/debug/race.
Use `info auto-load python-scripts [REGEXP]' to list them.
reseeding with 84716566159
+b src/main.rs:8
Breakpoint 6 at 0xf0f2: file src/main.rs, line 8.
+r
thread.c:1123: internal-error: void finish_thread_state(ptid_t): Assertion `tp'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
[1] 20343 abort (core dumped) ./debug.py
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Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Tue, 26 Sep 2017 13:01:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
URL| |https://sourceware.org/ml/g
| |db-patches/2017-09/msg00787
| |.html
--- Comment #1 from Rainer Orth <ro at gcc dot gnu.org> ---
Minimal patch posted.
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Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Tue, 26 Sep 2017 13:05:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=39b06c208fb7b7edb98866252cbd05ba0918f666
commit 39b06c208fb7b7edb98866252cbd05ba0918f666
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Tue Sep 26 14:58:53 2017 +0200
Fix gdb 8.1 Solaris/SPARC compilation (PR build/22206)
When testing my Solaris < 10 removal patch on Solaris/SPARC, I found
that gdb mainline is currently broken there due to the recent SPARC M7
ADI patches:
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1876:0: error: "PSR_ICC"
redefined [-Werror]
#define PSR_ICC 0x00f00000
^
In file included from /usr/include/v7/sys/privregs.h:24:0,
from /usr/include/sys/regset.h:420,
from /usr/include/sys/ucontext.h:21,
from /usr/include/sys/signal.h:231,
from /usr/include/sys/procset.h:23,
from /usr/include/sys/wait.h:25,
from /usr/include/stdlib.h:21,
from build-gnulib/import/stdlib.h:36,
from
/vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:35:0: note: this is the location of the previous
definition
#define PSR_ICC 0x00F00000 /* integer condition codes */
^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:1878:0: error: "PSR_IMPL"
redefined [-Werror]
#define PSR_IMPL 0xf0000000
^
In file included from /usr/include/v7/sys/privregs.h:24:0,
from /usr/include/sys/regset.h:420,
from /usr/include/sys/ucontext.h:21,
from /usr/include/sys/signal.h:231,
from /usr/include/sys/procset.h:23,
from /usr/include/sys/wait.h:25,
from /usr/include/stdlib.h:21,
from build-gnulib/import/stdlib.h:36,
from
/vol/src/gnu/gdb/gdb/local/gdb/common/common-defs.h:53,
from /vol/src/gnu/gdb/gdb/local/gdb/defs.h:28,
from /vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:20:
/usr/include/v7/sys/psr.h:41:0: note: this is the location of the previous
definition
#define PSR_IMPL 0xF0000000 /* implementation */
^
Comparing Solaris 11.4 <v7/sys/psr.h> and sparc64-tdep.c, there are more
inconsistencies:
<v7/sys/psr.h>:
#define PSR_S 0x00000080 /* supervisor mode */
#define PSR_ICC 0x00F00000 /* integer condition codes */
#define PSR_VER 0x0F000000 /* mask version */
#define PSR_IMPL 0xF0000000 /* implementation */
#define PSR_RSV 0x000FC000 /* reserved */
sparc64-tdep.c:
#define PSR_S 0x00000080
#define PSR_ICC 0x00f00000
#define PSR_VERS 0x0f000000
#define PSR_IMPL 0xf0000000
#define PSR_V8PLUS 0xff000000
#define PSR_XCC 0x000f0000
Apart from the capitalization differences that trip g++, the names
differ (PSR_VER vs. PSR_VERS), PSR_XCC is included in Solaris' PSR_RSV,
and there's no PSR_V8PLUS on Solaris either.
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function `int
adi_tag_fd()':
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:296:63: error: format `%d'
expects argument of type `int', but argument 4 has type `pid_t {aka long int}'
[-Werror=format=]
snprintf (cl_name, sizeof(cl_name), "/proc/%d/adi/tags", pid);
^
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c: In function `bool
adi_is_addr_mapped(CORE_ADDR, std::size_t)':
/vol/src/gnu/gdb/gdb/local/gdb/sparc64-tdep.c:314:64: error: format `%d'
expects argument of type `int', but argument 4 has type `pid_t {aka long int}'
[-Werror=format=]
snprintf (filename, sizeof filename, "/proc/%d/adi/maps", pid);
^
You cannot always print a pid_t, which can be either int or long on
Solaris, as an int.
Obviously, the ADI patch which modifies code shared between all SPARC
targets, hasn't been tested on anything but Linux/SPARC.
The patch below includes the minimal fixes necessary to unbreak the
Solaris/SPARC build.
However, as detailed in the PR, there's more breakage here: apart from
not bothering to implement ADI support on Solaris, the code contains
several more changes to shared/common SPARC code that are simply wrong
on anything but Linux/SPARC.
The patch was tested on sparcv9-sun-solaris2.10 and
sparcv9-sun-solaris2.11.4 (build and gdb/gdb gdb/gdb smoke test only).
PR build/22206
* sparc64-tdep.c (adi_tag_fd): Print pid as long.
(adi_is_addr_mapped): Likewise.
(PSR_ICC): Don't redefine.
(PSR_IMPL): Likewise.
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Tue, 26 Sep 2017 13:22:00 -0000
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--- Comment #3 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
The minimal patch has been installed to unbreak the Solaris/SPARC build.
I'm leaving the PR open for now to figure out how to properly deal with
SPARC M7 ADI support on anything but Linux/SPARC.
Rainer
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Subject: [Bug gdb/22185] Obsolete/remove support for Solaris < 10
Date: Tue, 26 Sep 2017 13:56:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Rainer Orth <ro@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=281c4447738409888d9659924937da182a65b4e1
commit 281c4447738409888d9659924937da182a65b4e1
Author: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
Date: Tue Sep 26 15:19:10 2017 +0200
Remove support for Solaris < 10 (PR gdb/22185)
Given that GCC has obsoleted/removed support for Solaris 9 in GCC 4.9/5 in
2013:
https://gcc.gnu.org/gcc-4.9/changes.html
https://gcc.gnu.org/ml/gcc-patches/2013-05/msg00728.html
and the last gdb version that can be compiled with gcc 4.9 is 7.12.1 only
when
configured with --disable-build-with-cxx, it's time to obsolete/remove
support
for Solaris < 10.
This patch does this, simplifying configure.nat along the way (only a
single
sol2 configuration with variants for i386 and sparc).
Some configure checks for older Solaris versions can go, too, and the check
for libthread_db.so.1 removed:
* Since Solaris 10, dlopen has moved to libc and libdl.so is just a
filter on ld.so.1, so no need to check.
* $RDYNAMIC is already handled above (and is a no-op with Solaris ld
anyway).
Both proc-service.c and sol-thread.c lose support for (Solaris-only)
PROC_SERVICE_IS_OLD.
The attached revised patch has been tested on sparcv9-sun-solaris2.10,
sparcv9-sun-solaris2.11.4, amd64-pc-solaris2.10, amd64-pc-solaris2.11.4,
and x86_64-pc-linux-gnu.
I've also started an i386-pc-solaris2.9 build to check that it really
stops as expected.
PR gdb/22185
* configure.host <*-*-solaris2.[01], *-*-solaris2.[2-9]*>: Mark as
obsolete.
Use gdb_host sol2 for i[34567]86-*-solaris2*, x86_64-*-solaris2*.
Remove i386sol2 support.
* configure.nat <i386sol2>: Remove.
<sol2-64>: Fold into ...
<sol2>: ... this.
Move common settings to default section.
Add sol-thread.o.
* configure.tgt <i[34567]86-*-solaris2.1[0-9]*,
x86_64-*-solaris2.1[0-9]*>: Rename to ...
<i[34567]86-*-solaris2*, x86_64-*-solaris2*>: ... this.
<i[34567]86-*-solaris*>: Remove.
<sparc-*-solaris2.[0-6], sparc-*-solaris2.[0-6].*>: Remove.
* configure.ac: Remove wctype in libw check.
(_MSE_INT_H): Don't define on Solaris 7-9.
<solaris*>: Remove libthread_db.so.1 check.
* configure: Regenerate.
* config.in: Regenerate.
* proc-service.c: Remove PROC_SERVICE_IS_OLD handling.
(gdb_ps_prochandle_t, gdb_ps_read_buf_t, gdb_ps_write_buf_t)
(gdb_ps_size_t): Remove.
Use base types in users.
* sol-thread.c: Likewise, also for gdb_ps_addr_t.
* NEWS (Changes since GDB 8.0): Document Solaris 2.0-9 removal.
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Subject: [Bug gdb/22185] Obsolete/remove support for Solaris < 10
Date: Tue, 26 Sep 2017 19:25:00 -0000
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Rainer Orth <ro at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #3 from Rainer Orth <ro at gcc dot gnu.org> ---
gdb-announce, gdb FYI posted
https://sourceware.org/ml/gdb/2017-09/msg00128.html
Closing.
Rainer
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From: "kevinb at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/22214] New: Cannot view all variables in scope within
OpenMP parallel region
Date: Tue, 26 Sep 2017 19:26:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22214
Bug ID: 22214
Summary: Cannot view all variables in scope within OpenMP
parallel region
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: threads
Assignee: unassigned at sourceware dot org
Reporter: kevinb at redhat dot com
Target Milestone: ---
Created attachment 10488
--> https://sourceware.org/bugzilla/attachment.cgi?id=10488&action=edit
Test case demonstrating problem with printing all variables in scope in OpenMP
program
When a breakpoint is placed within a parallel region within an OpenMP program,
GDB is unable to print variables which are in scope, but which are not
referenced within the parallel region.
I've attached an example which I intend to use as a test which I plan to post
to gdb-patches. (I'm filing this bug so I have a bug id to use for tests which
I need to kfail.)
This program can be compiled with the following command:
gcc -o omp-par-scope -g -fopenmp omp-par-scope.c
Debugging it in gdb and placing a breakpoint on the first printf (on line 39)
and running to that breakpoint reveals that variable i3 cannot be printed...
(gdb) b 39
Breakpoint 1 at 0x400b20: file omp-par-scope.c, line 39.
(gdb) run
Starting program: omp-par-scope
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff73d6700 (LWP 8483)]
Breakpoint 1, single_scope._omp_fn.0 () at omp-par-scope.c:39
39 printf ("single_scope: thread_num=%d, s1=%d, i1=%d, s2=%d,
i2=%d\n",
(gdb) print i3
No symbol "i3" in current context.
This is what it looks like when it works correctly:
(gdb) b 39
Breakpoint 1 at 0x400a6a: file omp-par-scope.c, line 39.
(gdb) run
Starting program:
/mesquite2/sourceware-git/binutils-gdb/gdb/testsuite/gdb.threads/omp-par-scope
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7ffff73cb700 (LWP 8504)]
[Switching to Thread 0x7ffff73cb700 (LWP 8504)]
Thread 2 "omp-par-scope" hit Breakpoint 1, single_scope._omp_fn.0 () at
omp-par-scope.c:39
39 printf ("single_scope: thread_num=%d, s1=%d, i1=%d, s2=%d,
i2=%d\n",
(gdb) print i3
$1 = 13
Moreover, continuing to the breakpoint again in the second/other thread should
also correctly print i3:
(gdb) c
Continuing.
single_scope: thread_num=1, s1=-41, i1=11, s2=202, i2=212
[Switching to Thread 0x7ffff7fd9780 (LWP 8500)]
Thread 1 "omp-par-scope" hit Breakpoint 1, single_scope._omp_fn.0 () at
omp-par-scope.c:39
39 printf ("single_scope: thread_num=%d, s1=%d, i1=%d, s2=%d,
i2=%d\n",
(gdb) print i3
$2 = 13
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Subject: [Bug threads/22214] Cannot view all variables in scope within OpenMP
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----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |kevinb at redhat dot com
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
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Chris Friedt <chrisfriedt at gmail dot com> changed:
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--- Comment #4 from Chris Friedt <chrisfriedt at gmail dot com> ---
I'm also encountering this on 10.12.6 ... sigh..
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>From gdb-prs-return-21946-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 04:40:12 2017
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From: "grassfedcode at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug mi/22217] New: gdb mi command -thread-list-ids
Date: Wed, 27 Sep 2017 04:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22217
Bug ID: 22217
Summary: gdb mi command -thread-list-ids
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: mi
Assignee: unassigned at sourceware dot org
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Example output of "-thread-list-ids" is as follows:
^done,thread-ids={thread-id="1",thread-id="2"},current-thread-id="2",number-of-threads="2"
The problem with this output is that the key "thread-id" is used multiple
times. In all other cases, this type of output corresponds to an associative
array (Python dictionary, JavaScript object, etc.) with unique keys. In this
case, the keys are not distinct. The output *should* be:
^done,thread-ids=["1","2"},current-thread-id="2",number-of-threads="2"
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>From gdb-prs-return-21945-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 00:00:33 2017
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From: "alexander.v.shaposhnikov at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22215] New: Triggered assert at dwarf2read.c:10986
elf_section_nr < dwp_file->num_sections
Date: Wed, 27 Sep 2017 04:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22215
Bug ID: 22215
Summary: Triggered assert at dwarf2read.c:10986 elf_section_nr
< dwp_file->num_sections
Product: gdb
Version: HEAD
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This assert triggers if the section .strtab is the first one
(probably, more generally (but i didn't verify that), the same issue can come
up if .strtab is not the last section.
Example:
main.cpp:
struct Foo {
int bar;
};
int main() {
Foo foo;
foo.bar = 1;
int x = foo.bar + 1;
return x;
}
build commands:
g++ -fPIC -gsplit-dwarf -g -O0 main.cpp -o main.exe
llvm-dwp main.dwo -o main.exe.dwp
llvm-dwp (built from LLVM upstream, or, alternatively,
5.0 version should work as well)
places .strtab section at the beginning of the binary:
Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
[ 0] NULL 0000000000000000 00000000
0000000000000000 0000000000000000 0 0 0
[ 1] .strtab STRTAB 0000000000000000 000002a0
0000000000000053 0000000000000000 0 0 1
Next one needs to build GDB from the upstream + make sure the patch
https://sourceware.org/ml/gdb-patches/2017-09/msg00814.html is included
(it fixes a separate issue, otherwise gdb will segfault much earlier).
run gdb:
gdb
and see
(gdb) file main.exe
Reading symbols from main.exe...dwarf2read.c:10986: internal-error: void
dwarf2_locate_common_dwp_sections(bfd*, asection*, void*): Assertion
`elf_section_nr < dwp_file->num_sections' failed.
A problem internal to GDB has been detected,
Some remarks:
1. To workaround this issue one can use the following trick:
objcopy --remove-section .strtab main.exe.dwp
objcopy will remove ".strtab" section but will create a new section ".shstrtab"
and will put it at the end. GDB works fine with the newly created .dwp.
2. It looks like that the value of
dwp_file->num_sections is not correct. I didn't dig deep into this issue, but
one potential scenario might look as follows (i'm not sure, it's just a guess,
might be completely wrong):
in the file elf.c, inside the function
bfd_section_from_shdr (bfd *abfd, unsigned int shindex),
at the line 2242, case SHT_STRTAB:
for the section .strtab the function _bfd_elf_make_section_from_shdr is not
called
=> the function bfd_section_init is not called => abfd->section_count is not
incremented.
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>From gdb-prs-return-21947-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 04:40:35 2017
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Subject: [Bug mi/22217] gdb mi command -thread-list-ids produces duplicate
keys
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----------------------------------------------------------------------------
Summary|gdb mi command |gdb mi command
|-thread-list-ids |-thread-list-ids produces
| |duplicate keys
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>From gdb-prs-return-21948-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 16:02:08 2017
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Subject: [Bug python/22223] New: python event.new_thread does not exist but
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Bug ID: 22223
Summary: python event.new_thread does not exist but described
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gdb-mi output:
&"source ./Command/new_thread_trigger.py\n"
&"Traceback (most recent call last):\n"
&" File \"./Command/new_thread_trigger.py\", line 9, in <module>\n"
&" gdb.events.new_thread.connect (new_thread_handler)\n"
&"AttributeError: 'module' object has no attribute 'new_thread'\n"
source file(new_thread_trigger.py):
import gdb
def new_thread_handler (event):
print("NEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEW Thread!!!!!")
gdb.events.new_thread.connect (new_thread_handler)
event document:
https://sourceware.org/gdb/current/onlinedocs/gdb/Events-In-Python.html#Events-In-Python
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>From gdb-prs-return-21949-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 20:13:20 2017
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From: "vomlehn at texas dot net" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22224] New: Documentation for add-symbol-file could be
clarified
Date: Wed, 27 Sep 2017 23:09:00 -0000
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Bug ID: 22224
Summary: Documentation for add-symbol-file could be clarified
Product: gdb
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I ran into a piece of code whose .text section began at a higher address than
another section. The documentation for add-symbol-file implies that the address
is that of the file, but it appears as though this is incorrect. When I supply
the virtual address of the start of the .text section, things work correctly.
If my deduction is correct, a clarification of this would be helpful.
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>From gdb-prs-return-21950-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Sep 27 23:09:21 2017
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Subject: [Bug gdb/18071] TLS variables can't be resolved on aarch64-linux-gnu
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--- Comment #1 from weimin.pan at oracle dot com ---
These problems can still be reproduced with upstream gcc/gdb
and can be addressed first by having the compiler emit dwarf
attribute DW_AT_location for these thread-local variables.
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>From gdb-prs-return-21951-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Sep 28 21:12:11 2017
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Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Fri, 29 Sep 2017 17:36:00 -0000
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Adam Stylinski <kungfujesus06 at gmail dot com> changed:
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----------------------------------------------------------------------------
Version|7.12.1 |8.0
--- Comment #12 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Keith Seitz from comment #11)
> (In reply to Adam Stylinski from comment #10)
> > So it's been about 3 months, any luck reproducing this?
>
> I'm very sorry, I've not been able to work on this for some time, but I do
> have plans to investigate this further soon. I just wanted to drop you a
> note letting you know that I haven't (completely) forgotten about you/your
> problem.
Any luck reproducing this? I still see it on gdb 8.0.
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From: "sillyduckyang at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/22228] New: Arguments shift when print/call (sometimes
causing gdb crash)
Date: Fri, 29 Sep 2017 17:40:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22228
Bug ID: 22228
Summary: Arguments shift when print/call (sometimes causing gdb
crash)
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: sillyduckyang at gmail dot com
Target Milestone: ---
Description:
------------
If a function is returning a inheritance class object,
the print/call of that function will have an argument shift.
Testcase:
---------
#include <iostream>
using namespace std;
class Dad {
public:
Dad(int i): _value(i) {}
private:
int _value ;
};
class Son : public Dad {
public:
Son() : Dad(777) {}
};
class B{
public:
Son f(int a, int b, B* c){
cout << this << " " << a << " " << b << " " << c << endl;
cout << (this == c) << endl;
return Son();
}
};
int main(){
B* p = new B();
p->f(1,2,p);
return 0;
}
How to reproduce:
-----------------
Compile the above mentioned testcase
(gdb) b main
Breakpoint 1 at 0x4009ee: file test.cpp, line 27.
(gdb) r
Starting program: /home/SillyDuck/bad
Breakpoint 1, main () at test.cpp:27
27 B* p = new B();
(gdb) n
28 p->f(1,2,p);
(gdb) p p->f(1,2,p)
0x7fffffffda00 6376480 1 0x2
0
$1 = {<Dad> = {_value = 0}, <No data fields>}
Environment:
------------
GNU gdb (GDB) 8.0.1
gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.4)
Also appears in the gcc 4.8.3 with gdb 7.12 in CentOS 6.6
(In fact it appears in most linux system)
Discussion:
-----------
After tracing the src,
I think the root problem may be in the
gnu-v3-api.c --> gnuv3_pass_by_reference
the assembly of test.cpp did not has a pointer passed as the first argument for
the return value.
But gdb is somehow inconsist with gcc's behavior...
If the function is calling some other function with incorrect "this" pointer,
it sometimes also crashes the gdb...
00000000004009e6 <main>:
4009e6: 55 push %rbp
4009e7: 48 89 e5 mov %rsp,%rbp
4009ea: 48 83 ec 10 sub $0x10,%rsp
4009ee: bf 01 00 00 00 mov $0x1,%edi
4009f3: e8 d8 fe ff ff callq 4008d0 <_Znwm@plt>
4009f8: 48 89 45 f8 mov %rax,-0x8(%rbp)
4009fc: 48 8b 55 f8 mov -0x8(%rbp),%rdx
400a00: 48 8b 45 f8 mov -0x8(%rbp),%rax
400a04: 48 89 d1 mov %rdx,%rcx
400a07: ba 02 00 00 00 mov $0x2,%edx
400a0c: be 01 00 00 00 mov $0x1,%esi
400a11: 48 89 c7 mov %rax,%rdi
400a14: e8 cf 00 00 00 callq 400ae8 <_ZN1B1fEiiPS_>
400a19: b8 00 00 00 00 mov $0x0,%eax
400a1e: c9 leaveq
400a1f: c3 retq
Interesting thing is that if we add a copy constructor in Dad, this problem is
gone...
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To: gdb-prs@sourceware.org
Subject: [Bug c++/22228] Arguments shift when print/call (sometimes causing
gdb crash)
Date: Fri, 29 Sep 2017 19:01:00 -0000
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----------------------------------------------------------------------------
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From: "sillyduckyang at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/22228] Arguments shift when print/call (sometimes causing
gdb crash)
Date: Sat, 30 Sep 2017 17:37:00 -0000
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--- Comment #1 from sillyduckyang at gmail dot com ---
Created attachment 10492
--> https://sourceware.org/bugzilla/attachment.cgi?id=10492&action=edit
Arg shift illustration
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>From gdb-prs-return-21956-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 02 11:16:11 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/22234] New: complaints don't end with newlines
Date: Mon, 02 Oct 2017 11:16:00 -0000
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Bug ID: 22234
Summary: complaints don't end with newlines
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
Component: cli
Assignee: unassigned at sourceware dot org
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I did "set complaints 1" and ran gdb on an executable that
has some DWARF issues (see https://github.com/rust-lang/rust/issues/44412).
I got output like this:
(gdb) file -readnow libxul.so.dbg
Reading symbols from libxul.so.dbg...expanding to full symbols...unsupported
tag: 'DW_TAG_unspecified_type'...const value length mismatch for
'nsISupports::COMTypeInfo<nsISupports, void>::kIID', got 16, expected 0...Child
DIE 0x9a0d and its abstract origin 0x9e60 have different parents...cannot get
low and high bounds for subprogram DIE at 42795....debug_line address at offset
0x19c6 is 0 [in module /tmp/libxul.so.dbg]...Member function "~MetaData"
(offset 74544) is virtual but the vtable offset is not
specified...DW_AT_call_target target DIE has invalid low pc, for referencing
DIE 0x1d356 [in module /tmp/libxul.so.dbg]...Multiple children of DIE 0xa8f7c
refer to DIE 0xa2549 as their abstract origin...location expression too
complex...No DW_FORM_block* DW_AT_call_value for DW_TAG_call_site child DIE
0x10ea38 [in module /tmp/libxul.so.dbg]...missing name for subprogram DIE at
9803491...Only single DW_OP_reg or DW_OP_fbreg is supported for DW_FORM_block*
DW_AT_location is supported for DW_TAG_call_site child DIE 0xf8c6ae [in module
/tmp/libxul.so.dbg]...Duplicate PC 0xf1202e for DW_TAG_call_site DIE 0x5d0ad32
[in module /tmp/libxul.so.dbg]...^CQuit
This would be a lot more readable with newlines.
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Subject: [Bug rust/22236] New: string slices print too much
Date: Mon, 02 Oct 2017 16:50:00 -0000
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Bug ID: 22236
Summary: string slices print too much
Product: gdb
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Status: NEW
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Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
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Consider this program:
fn main() {
let c = "a/b";
let d = &c[..1];
println!("done");
}
Set a breakpoint on the println and run.
Then print "d":
(gdb) p d
$2 = &str {
data_ptr: 0x100044280 <str> "a/b\000",
length: 1
}
Since length is 1 I would expect this to just print "a".
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>From gdb-prs-return-21958-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 02 17:57:48 2017
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Subject: [Bug rust/22236] string slices print too much
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>From gdb-prs-return-21959-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 02 18:02:39 2017
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Subject: [Bug rust/20164] fix string printing in rust
Date: Mon, 02 Oct 2017 18:02:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Special-casing &str is being done in bug 22236.
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>From gdb-prs-return-21960-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 02 20:13:42 2017
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Subject: [Bug rust/22236] string slices print too much
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/22236] string slices print too much
Date: Mon, 02 Oct 2017 20:13:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=45320ffa0450b27e232d933d2a1c6a09d94ac18b
commit 45320ffa0450b27e232d933d2a1c6a09d94ac18b
Author: Tom Tromey <tom@tromey.com>
Date: Mon Oct 2 13:55:42 2017 -0600
Fix &str printing in Rust
Printing a string slice ("&str") in Rust would print until the
terminating \0; but that is incorrect because a slice has a length.
This fixes &str printing, and arranges to preserve the type name when
slicing a slice, so that printing a slice of an "&str" works as well.
This is PR rust/22236.
2017-10-02 Tom Tromey <tom@tromey.com>
PR rust/22236:
* rust-lang.c (rust_val_print_str): New function.
(val_print_struct): Call it.
(rust_subscript): Preserve name of slice type.
2017-10-02 Tom Tromey <tom@tromey.com>
PR rust/22236:
* gdb.rust/simple.rs (main): New variable "fslice".
* gdb.rust/simple.exp: Add slice tests. Update string tests.
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Subject: [Bug c++/22242] New: recursive display of variable information
Date: Tue, 03 Oct 2017 13:14:00 -0000
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Bug ID: 22242
Summary: recursive display of variable information
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Created attachment 10502
--> https://sourceware.org/bugzilla/attachment.cgi?id=10502&action=edit
Code for demonstrating the "infinite print"
Seems like the heuristics to prevent recursing into static members ain't
working with more complex code.
This is rather annoying cause it kills the debugger session in eclipse.
To reproduce the issue:
1) Compile the attached source with g++:
g++ -O0 -g3 recursivegdb.cpp
2) Debug the output:
gdb a.out
3) Set breakpoint at main and run
b main
run
4) display variable v
p v
5) Try some minutes to reach the end of it...
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Subject: [Bug rust/22251] New: &str type should be built in
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Bug ID: 22251
Summary: &str type should be built in
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pokyo. gdb -nx -quiet
(gdb) set lang rust
(gdb) ptype &str
No symbol 'str' in current context
&str is a built-in type, gdb should probably know about it.
This happens when debugging a rust program as well, where &str
is in the debuginfo.
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Subject: [Bug rust/22251] &str type should be built in
Date: Wed, 04 Oct 2017 17:16:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
This may also fall into the problem where ptype isn't
trying to parse as a type. I notice that "ptype &[u8]" doesn't
work either.
This probably requires some core change so the parser can
know if it should try a type parse (since I don't want to
introduce ambiguities into the grammar)
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Subject: [Bug rust/22254] New: rust needs value_print as well
Date: Wed, 04 Oct 2017 20:58:00 -0000
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Bug ID: 22254
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Printing a Path ("*a" in this example):
use std::path::Path;
use std::ffi::OsString;
fn main() {
let a = Path::new("a/b");
let b = a.parent().unwrap();
let bs = b.as_os_str();
let c = b"a/b";
let d = &c[..1];
let e = OsString::from("a/b");
let f = &e[..];
let zzzzz = 3;
println!("done {}", b.display());
}
will show
$23 = (std::path::Path ?) std::path::Path {
inner: std::ffi::os_str::OsStr {
inner: std::sys::imp::os_str::Slice {
inner: 0x555555599800 <str>
}
}
}
The type is printed twice here - once with the "?" from c_value_print.
Rust should implement the value_print hook as well to avoid this.
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Subject: [Bug breakpoints/18144] [aarch64] the skip prologue functionality
doesn't work well for same assembly functions
Date: Thu, 05 Oct 2017 01:39:00 -0000
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weimin.pan at oracle dot com changed:
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----------------------------------------------------------------------------
CC| |weimin.pan at oracle dot com
--- Comment #2 from weimin.pan at oracle dot com ---
It works fine now with current git master:
(gdb) disass _start
Dump of assembler code for function _start:
0x0000000000400244 <+0>: nop
0x0000000000400248 <+4>: nop
0x000000000040024c <+8>: ret
End of assembler dump.
(gdb) b _start
Breakpoint 1 at 0x400244
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Subject: [Bug breakpoints/18144] [aarch64] the skip prologue functionality
doesn't work well for same assembly functions
Date: Thu, 05 Oct 2017 14:24:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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CC| |palves at redhat dot com
--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
GDB stopped skipping the prologue of asm sources with:
commit 6e22494e5076e4d3c0b2c2785883162f83db499e
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
AuthorDate: Fri Jun 26 15:11:14 2015 +0200
Do not skip prologue for asm (.S) files
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To: gdb-prs@sourceware.org
Subject: [Bug compile/22188] gdb/arm-tdep.c:6449: (rn & 0xe) == 0x1 -
tautology
Date: Fri, 06 Oct 2017 09:52:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jose E. Marchesi
<jemarch@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=2f924de654ff8f719faf60b84948397809baaac6
commit 2f924de654ff8f719faf60b84948397809baaac6
Author: Jose E. Marchesi <jose.marchesi@oracle.com>
Date: Fri Oct 6 11:49:39 2017 +0200
gdb: Fix decoding of ARM neon memory hint insns.
gdb/ChangeLog:
2017-10-05 Jose E. Marchesi <jose.marchesi@oracle.com>
PR build/22188
* arm-tdep.c (arm_decode_misc_memhint_neon): Fix decoding of CPS
and SETEND.
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Subject: [Bug build/22188] gdb/arm-tdep.c:6449: (rn & 0xe) == 0x1 -
tautology
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-10-06
CC| |qiyao at gcc dot gnu.org
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--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
One build error is fixed.
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
Assignee|unassigned at sourceware dot org |palves at redhat dot com
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
This series should fix it:
https://sourceware.org/ml/gdb-patches/2017-06/msg00012.html
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From: "night_ghost at ykoctpa dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22271] New: GDB fails on "assertion failed"
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Bug ID: 22271
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/home/build/work/GCC-5-0-build/src/gdb/gdb/inline-frame.c:167: internal-error:
inline_frame_this_id: Assertion `frame_id_p (*this_id)' failed.
gdb version which comes with gcc-arm-none-eabi-5_4-2016q2
ELF can be sent
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22271] GDB fails on "assertion failed"
Date: Mon, 09 Oct 2017 14:04:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Hi! Sorry for the error...
> gdb version which comes with gcc-arm-none-eabi-5_4-2016q2
I don't think it's reasonable to expect that we know what version that is.
> ELF can be sent
That'd be better, because from the info you've provided alone it's impossible
to debug this. Though, I suspect that it still wouldn't be sufficient. To
trigger that assertion, it must be that you run some commands in some sequence
that triggers the bug, and some of those commands must have been execution
commands (run, continue, step, etc.), and we have no idea which those were.
Best would be a small self-contained reproducer.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug guile/21104] 7.12.1 does not compile with latest guile (2.1.6)
Date: Mon, 09 Oct 2017 16:52:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6e66f7538112d2f5fb1af17dbde33ba37a7171be
commit 6e66f7538112d2f5fb1af17dbde33ba37a7171be
Author: Simon Marchi <simon.marchi@polymtl.ca>
Date: Mon Oct 9 12:50:58 2017 -0400
Don't try building gdb against guile-2.2
GDB currently doesn't build with Guile 2.2 (see PR 21104). If one has
both Guile 2.2 and 2.0 installed, GDB will pick up Guile 2.2 first and
fail building. Until somebody does the work of adapting the GDB code to
Guile 2.2, we should not try using it. This patch therefore removes it
from configure.
gdb/ChangeLog:
* configure.ac (try_guile_versions): Remove guile-2.2.
* configure: Regenerate.
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From: "sbansal at ciena dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22275] New: Configuration powerpc-wrs-vxworks is obsolete.
Date: Tue, 10 Oct 2017 03:35:00 -0000
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Bug ID: 22275
Summary: Configuration powerpc-wrs-vxworks is obsolete.
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: sbansal at ciena dot com
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I am trying to build gdb 8.0 version on my host machine x86 having compiler
version 4.8.5 and make 3.82 version.
Configuration used :
===========================
../gdb-8.0/configure --target=powerpc-vxworks
Getting below error while compiling :
checking whether NLS is requested... yes
checking for catalogs to be installed...
checking whether makeinfo --split-size=5000000 supports @click... yes
checking for default auto-load directory... $debugdir:$datadir/auto-load
checking for default auto-load safe-path... $debugdir:$datadir/auto-load
*** Configuration powerpc-wrs-vxworks is obsolete.
*** Support has been REMOVED.
make[1]: *** [configure-gdb] Error 1
make[1]: Leaving directory `/home/sbansal/vik/gdb/build-gdb'
make: *** [all] Error 2
Please let me know if other information is required.
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From: "night_ghost at ykoctpa dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
Date: Tue, 10 Oct 2017 06:02:00 -0000
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--- Comment #2 from night_ghost at ykoctpa dot ru ---
Created attachment 10520
--> https://sourceware.org/bugzilla/attachment.cgi?id=10520&action=edit
ELF for testcase
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>From gdb-prs-return-21977-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 10 06:07:25 2017
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From: "night_ghost at ykoctpa dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
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--- Comment #3 from night_ghost at ykoctpa dot ru ---
sources https://github.com/night-ghost/ardupilot
#/arm-none-eabi-gdb --version
GNU gdb (GNU Tools for ARM Embedded Processors) 7.10.1.20160616-cvs
stop at breakpoint in REVOMINIScheduler::do_task() causes this error
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>From gdb-prs-return-21978-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 10 11:16:17 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22275] Configuration powerpc-wrs-vxworks is obsolete.
Date: Tue, 10 Oct 2017 11:16:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
> Please let me know if other information is required.
Yes. What is the actual bug you're reporting?
VxWorks support was removed from GDB in 2004.
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>From gdb-prs-return-21979-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 10 11:20:11 2017
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
(In reply to night_ghost from comment #3)
> #/arm-none-eabi-gdb --version
> GNU gdb (GNU Tools for ARM Embedded Processors) 7.10.1.20160616-cvs
This is not an upstream GDB version, and it's getting a bit old -- did you
report the bug to whom you got toolchain from?
Could you try with a more up to date pristine/upstream GDB?
It's possible that the bug is already fixed.
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Subject: [Bug server/22279] New: gdbserver 100% CPU usage after gdb quit
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Bug ID: 22279
Summary: gdbserver 100% CPU usage after gdb quit
Product: gdb
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Currently tested with 7.12, but it has been around for a while and I don't
think anyone has done anything since 7.12.
#!/usr/bin/gdb -x
set sysroot /
target extended-remote | gdbserver --multi stdio
quit
At this point, the spawned gdbserver will have 100% CPU usage indefinitely.
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>From gdb-prs-return-21981-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 10 18:16:02 2017
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Subject: [Bug server/22279] gdbserver 100% CPU usage after gdb quit
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
gdb seemingly hangs because it just closes the pipe and then waits for the
child
(gdbserver in this case) to exit gracefully in reaction to stdin closing.
However, gdbserver doesn't normally exit when GDB disconnects. Instead it goes
back to waiting for another connection.
That doesn't seem to make sense when connected with STDIO though. If
gdbserver's stdin pipe is closed, then you won't be able to reconnect anyway.
The workaround is to start gdbserver with "--once". I.e.,
(gdb) target extended-remote | gdbserver --once --multi stdio
"--once" makes gdbserver exit when gdb disconnects instead of waiting for
another connection, which is exactly what we want here.
gdbserver already special-cases a few things when connected in STDIO mode.
I think it'd make sense to make STDIO imply --once too. That's probably easy.
As usual for smaller user-visible changes, documentation changes and especially
testcase will probably be more work than the gdbserver patch itself.
(GDB doesn't stay around for me indefinitely, there's a timeout after a few
seconds.)
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>From gdb-prs-return-21987-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:44:22 2017
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>From gdb-prs-return-21986-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:44:19 2017
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>From gdb-prs-return-21988-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:44:23 2017
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>From gdb-prs-return-21991-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:48:32 2017
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>From gdb-prs-return-21993-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:48:38 2017
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>From gdb-prs-return-21992-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 10:48:34 2017
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>From gdb-prs-return-21999-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 16:40:44 2017
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Subject: [Bug gdb/22282] info locals 1 freeze at 100%
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>From gdb-prs-return-21998-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 11 16:40:31 2017
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Subject: [Bug gdb/22282] New: info locals 1 freeze at 100%
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Bug ID: 22282
Summary: info locals 1 freeze at 100%
Product: gdb
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Hi,
I'm using OS X Yosemite. I've compiled with gcc 7.10. When I debug with gdb
7.10.1 or with gdb 8.0, info locals put gdb at 100% and never returns, but it
doesn't crash.
I can supply the executable file.
Is it known ? Is there something that I can do. I can consider to debug gdb,
ut can you point me in the right direction ?
Regards.
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>From gdb-prs-return-22000-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Oct 12 11:06:17 2017
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From: "paul.hua.gm at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22286] New: [MIPS] internal-error when read dspctl
register
Date: Thu, 12 Oct 2017 11:06:00 -0000
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Bug ID: 22286
Summary: [MIPS] internal-error when read dspctl register
Product: gdb
Version: HEAD
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Priority: P2
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I use 'info r' to read registers on mips64 target with dsp.
something wrong.
internal-error: void inf_ptrace_fetch_register(regcache*, int): Assertion
`(size % sizeof (PTRACE_TYPE_RET)) == 0' failed.
----------------cut-------------------------------
(gdb) b main
Breakpoint 1 at 0x1200038b4
(gdb) r
Starting program: /usr/bin/ls
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Breakpoint 1, 0x00000001200038b4 in main ()
(gdb) info r
zero at v0 v1
R0 0000000000000000 0000000000000001 0000000000000000 000000fff7ffcf80
a0 a1 a2 a3
R4 0000000000000001 000000ffffffad98 000000ffffffada8 0000000000000000
a4 a5 a6 a7
R8 000000fff7f36820 000000fff7fdba18 000000ffffffad90 0000000000000001
t0 t1 t2 t3
R12 000000fff7d75140 000000000000000b 00000000f63d4e2e 000000fff7ffde28
s0 s1 s2 s3
R16 000000fff7f34cc8 000000012001d5e0 0000000000000000 0000000000000000
s4 s5 s6 s7
R20 000000012016d750 000000012015af48 0000000000000000 0000000000000000
t8 t9 k0 k1
R24 0000000000000000 00000001200038a0 0000000000000000 0000000000000000
gp sp s8 ra
R28 00000001200438a0 000000ffffffa900 0000000000000000 000000fff7d931a0
status lo hi badvaddr
ffffffff8500c8f3 0000000000000000 000000000000000a 000000fff7daefe8
cause pc
0000000010000024 00000001200038b4
fcsr fir hi1 lo1
00000000 00770501 0000000000000000 0000000000000000
hi2 lo2 hi3 lo3
0000000000000000 0000000000000000 0000000000000000 0000000000000000
dspctl restart
../../binutils-gdb_git_trunk/gdb/inf-ptrace.c:735: internal-error: void
inf_ptrace_fetch_register(regcache*, int): Assertion `(size % sizeof
(PTRACE_TYPE_RET)) == 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
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Subject: [Bug gdb/22286] [MIPS] internal-error when read dspctl register
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--- Comment #1 from Paul Hua <paul.hua.gm at gmail dot com> ---
In mips64-dsp-linux.c:102
102 tdesc_create_reg (feature, "dspctl", 78, 1, NULL, 32, "int");
define the reg size is '32'。
but in inf-ptrace.c：
734 size = register_size (gdbarch, regnum);
735 gdb_assert ((size % sizeof (PTRACE_TYPE_RET)) == 0);
the PTRACE_TYPE_RET is long, sizeof (PTRACE_TYPE_RET) is 8, size is 4, so
triger the gdb_assert.
we should define dspctl size is 64, like status/cause register.
Changelog:
2017-10-12 Chenghua Xu <paul.hua.gm@gmail.com>
* mips64-dsp-linux.c (initialize_tdesc_mips64_dsp_linux): Change
dspctl from 32 to 64 bit.
-----------------------------------------------------------------------
diff --git a/gdb/features/mips64-dsp-linux.c b/gdb/features/mips64-dsp-linux.c
index 05317b7..b42a8ce 100644
--- a/gdb/features/mips64-dsp-linux.c
+++ b/gdb/features/mips64-dsp-linux.c
@@ -99,7 +99,7 @@ initialize_tdesc_mips64_dsp_linux (void)
tdesc_create_reg (feature, "lo2", 75, 1, NULL, 64, "int");
tdesc_create_reg (feature, "hi3", 76, 1, NULL, 64, "int");
tdesc_create_reg (feature, "lo3", 77, 1, NULL, 64, "int");
- tdesc_create_reg (feature, "dspctl", 78, 1, NULL, 32, "int");
+ tdesc_create_reg (feature, "dspctl", 78, 1, NULL, 64, "int");
feature = tdesc_create_feature (result, "org.gnu.gdb.mips.linux");
tdesc_create_reg (feature, "restart", 79, 1, "system", 64, "int");
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Subject: [Bug gdb/22286] [MIPS] internal-error when read dspctl register
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Paul Hua <paul.hua.gm at gmail dot com> changed:
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--- Comment #2 from Paul Hua <paul.hua.gm at gmail dot com> ---
CC: macro@linux-mips.org, cause git blame to you.
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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----------------------------------------------------------------------------
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--- Comment #3 from Maciej W. Rozycki <macro@linux-mips.org> ---
Hi Paul,
Thank you for your bug report and the proposed fix.
However the DSPControl register is architecturally 32-bit even on 64-bit
hardware, like CP1 control registers (e.g. FCSR, etc.) and unlike CP0
registers in general. So I'd rather fix the problem the other way round.
I'll look into it.
NB I agree Status and Cause are inconsistent in that they are exposed as
64-bit while they are not. The reason is historical and boils down to
the layout of the `g'/`G' RSP packets matching debug stubs which predate
the introduction of XML register descriptions. This could be fixed in
a way similar to how I adjusted the handling of FCSR and FIR not so long
ago, however as a non-fatal issue this is not urgent.
Maciej
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Jon Turney <jon.turney at dronecode dot org.uk> changed:
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--- Comment #6 from Jon Turney <jon.turney at dronecode dot org.uk> ---
This problem is also seen on x86 Cygwin, and same workaround applies.
It would be nice if we understood what was going wrong in the unwinder to cause
this problem, though...
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--- Comment #7 from asmwarrior <asmwarrior at gmail dot com> ---
I don't see this issue, I build GDB git master under msys + mingw-w64
mingw-build 5.4 gcc 32 bit version, if you would like to test, I have the
binary here: http://forums.codeblocks.org/index.php/topic,22185.0.html, you
need to install the official python 2.7 distribution, because my gdb was build
against this python.
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
> Bug is confirmed.
Updating status then. Waldfred, if your account doesn't let you do that
yourself, please let me know.
And, I believe the bug is fixed in both master and 8.0 branch, right?
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
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--- Comment #4 from Walfred Tedeschi <walfred.tedeschi at intel dot com> ---
> -----Original Message-----
> From: palves at redhat dot com [mailto:sourceware-
> bugzilla@sourceware.org]
> Sent: Friday, October 13, 2017 11:06 AM
> To: Tedeschi, Walfred <walfred.tedeschi@intel.com>
> Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
>
> https://sourceware.org/bugzilla/show_bug.cgi?id=22137
>
> Pedro Alves <palves at redhat dot com> changed:
>
> What |Removed |Added
> ----------------------------------------------------------------------------
> Status|UNCONFIRMED |NEW
> Last reconfirmed| |2017-10-13
> Ever confirmed|0 |1
>
> --- Comment #3 from Pedro Alves <palves at redhat dot com> ---
> > Bug is confirmed.
>
> Updating status then. Waldfred, if your account doesn't let you do that
> yourself, please let me know.
>
> And, I believe the bug is fixed in both master and 8.0 branch, right?
>
Patch works for both!
I will patch then!
Thanks and regards,
/Fred
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Subject: [Bug gdb/21078] gdb compiled with mingw32 crashes on Windows7 when
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--- Comment #8 from Jon Turney <jon.turney at dronecode dot org.uk> ---
(In reply to asmwarrior from comment #7)
> I don't see this issue, I build GDB git master under msys + mingw-w64
> mingw-build 5.4 gcc 32 bit version, if you would like to test, I have the
> binary here: http://forums.codeblocks.org/index.php/topic,22185.0.html, you
> need to install the official python 2.7 distribution, because my gdb was
> build against this python.
Since it seems to be something to do with unwinding across DLL boundaries, I'm
going to wildly guess that building without --with-system-readline also
prevents
this problem.
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To: gdb-prs@sourceware.org
Subject: [Bug python/12966] python threads incompatible with gdbserver
Date: Fri, 13 Oct 2017 12:29:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ebe3b40202042fc644df5ea3bd111425ba1aeeee
commit ebe3b40202042fc644df5ea3bd111425ba1aeeee
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 13 13:25:20 2017 +0100
Remove is_remote kfail from gdb.python/py-evthreads.exp
This testcase works fine with gdbserver nowadays. So remove the
kfail.
gdb/testsuite/ChangeLog:
2017-10-13 Pedro Alves <palves@redhat.com>
Simon Marchi <simon.marchi@polymtl.ca>
PR python/12966
* gdb.python/py-evthreads.exp: Remove is_remote target kfail.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22293] New: find command's "halting search" warning missing
against gdbserver
Date: Fri, 13 Oct 2017 15:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22293
Bug ID: 22293
Summary: find command's "halting search" warning missing
against gdbserver
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
Target Milestone: ---
Currently, native-testing gdb.base/find-unmapped.exp we see:
find global_var_0, global_var_2, 0xff
warning: Unable to access 398 bytes of target memory at 0x7ffff7ff5e83,
halting search.
Pattern not found.
(gdb) PASS: gdb.base/find-unmapped.exp: find global_var_0, global_var_2, 0xff
While with native-extended-gdbserver we get:
find global_var_0, global_var_2, 0xff
Pattern not found.
(gdb) FAIL: gdb.base/find-unmapped.exp: find global_var_0, global_var_2, 0xff
The test fails because the testcase is expecting the "halting search" warning.
And the warning is missing because gdbserver supports the search memory packet,
and in that case, the warning is output by gdbserver instead of gdb.
Printing the warning in gdbserver's terminal doesn't really help users. It'd
be much better if the search memory packet was extended to allow reporting back
the memory range that couldn't be read, and then have GDB print the warning,
instead of gdbserver.
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Subject: [Bug gdb/22293] find command's "halting search" warning missing
against gdbserver
Date: Fri, 13 Oct 2017 15:54:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=8b0553c18f0dc63ab0ae930f2e8eed2bce4cd32c
commit 8b0553c18f0dc63ab0ae930f2e8eed2bce4cd32c
Author: Pedro Alves <palves@redhat.com>
Date: Fri Oct 13 16:34:50 2017 +0100
Make gdb.base/find-unmapped.exp pass on remote targets
Currently, with --target_board=native-extended-gdbserver, we get:
Running .../src/gdb/testsuite/gdb.base/find-unmapped.exp ...
FAIL: gdb.base/find-unmapped.exp: find global_var_0, global_var_2, 0xff
FAIL: gdb.base/find-unmapped.exp: find global_var_1, global_var_2, 0xff
FAIL: gdb.base/find-unmapped.exp: find global_var_2, (global_var_2 + 16),
0xff
This commit makes the test pass there, and also enables in on
--target_board=native-gdbserver, and other remote targets.
I've filed PR gdb/22293 to track the missing-warning problem.
gdb/testsuite/ChangeLog:
2017-10-13 Pedro Alves <palves@redhat.com>
PR gdb/22293
* gdb.base/find-unmapped.exp: Don't skip if is_remote target.
(top level): Move some tests to ...
(test_not_found): ... this new procedure.
(top level): Call it.
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Subject: [Bug uprobes/22297] New: Program terminated with signal SIGTRAP,
Trace/breakpoint trap
Date: Sun, 15 Oct 2017 12:48:00 -0000
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Bug ID: 22297
Summary: Program terminated with signal SIGTRAP,
Trace/breakpoint trap
Product: systemtap
Version: unspecified
Status: UNCONFIRMED
Severity: critical
Priority: P1
Component: uprobes
Assignee: systemtap at sourceware dot org
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CC: drow at false dot org, gdb-prs at sourceware dot org,
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Target Milestone: ---
+++ This bug was initially created as a clone of Bug #9463 +++
[Converted from Gnats 2358]
I have a simple program dynamically linked agains pthread.
When i try to set a breakpoint in a child thread created with pthread_create i
get
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
I am using NPTL
Release:
> gdb 6.6
Environment:
Gentoo distribution, all patches,kernel 2.6.22-gentoo-r8, also happens with
newer kernels
gcc (GCC) 4.1.2 (Gentoo 4.1.2)
---------------
GNU C Library stable release version 2.6.1, by Roland McGrath et al.
Compiled by GNU CC version 4.1.2 (Gentoo 4.1.2).
Compiled on a Linux >>2.6.22-gentoo-r8<< system on 2007-11-06.
Available extensions:
C stubs add-on version 2.1.2
crypt add-on version 2.1 by Michael Glad and others
Gentoo patchset 1.1
GNU Libidn by Simon Josefsson
Native POSIX Threads Library by Ulrich Drepper et al
Support for some architectures added on, not maintained in glibc core.
BIND-8.2.3-T5B
How-To-Repeat:
Just compile the program with
gcc -g -o pthreadtest pthreadtest.c -lpthreads
run program with
./pthreadtest &
gdb -p `pgrep pthreadtest`
In gdb
br 12
continue
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From: "IsaacOscar at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22301] New: [AARCH64] can't place breakpoint on STP
of double registers
Date: Mon, 16 Oct 2017 04:26:00 -0000
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Bug ID: 22301
Summary: [AARCH64] can't place breakpoint on STP of double
registers
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: IsaacOscar at hotmail dot com
Target Milestone: ---
On aarch64 (the armv8-a version), gdb fails to place breakpoints on STP
instruction with double registers as operands, e.g:
```
.globl main
main:
STP D9, D8, [SP,#-16]!
RET
```
When compiled with gcc, and run through gdb:
```
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.04) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "aarch64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a.out...(no debugging symbols found)...done.
(gdb) b main
/build/gdb-g58BK_/gdb-7.11.1/gdb/aarch64-tdep.c:334: internal-error:
aarch64_analyze_prologue: Assertion `inst.operands[0].type == AARCH64_OPND_Rt'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-g58BK_/gdb-7.11.1/gdb/aarch64-tdep.c:334: internal-error:
aarch64_analyze_prologue: Assertion `inst.operands[0].type == AARCH64_OPND_Rt'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted (core dumped)
```
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From: "IsaacOscar at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22301] [AARCH64] can't place breakpoint on STP of
double registers
Date: Mon, 16 Oct 2017 04:28:00 -0000
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--- Comment #1 from Isaac <IsaacOscar at hotmail dot com> ---
Created attachment 10531
--> https://sourceware.org/bugzilla/attachment.cgi?id=10531&action=edit
Core dump
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22301] [AARCH64] can't place breakpoint on STP of
double registers
Date: Mon, 16 Oct 2017 04:31:00 -0000
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--- Comment #2 from Isaac <IsaacOscar at hotmail dot com> ---
Interestingly, adding a breakpoint to the actual first instruction of main
works, but using 'si' after breaking dosn't:
```
(gdb) b *&main
Breakpoint 1 at 0x400570
(gdb) r
Starting program: /home/isaacg/a.out
Breakpoint 1, 0x0000000000400570 in main ()
(gdb) si
/build/gdb-g58BK_/gdb-7.11.1/gdb/aarch64-tdep.c:334: internal-error:
aarch64_analyze_prologue: Assertion `inst.operands[0].type == AARCH64_OPND_Rt'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-g58BK_/gdb-7.11.1/gdb/aarch64-tdep.c:334: internal-error:
aarch64_analyze_prologue: Assertion `inst.operands[0].type == AARCH64_OPND_Rt'
failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted (core dumped)
```
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>From gdb-prs-return-22016-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 16 05:45:26 2017
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Subject: [Bug breakpoints/22301] [AARCH64] can't place breakpoint on STP of
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Date: Mon, 16 Oct 2017 05:45:00 -0000
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Isaac <IsaacOscar at hotmail dot com> changed:
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--- Comment #3 from Isaac <IsaacOscar at hotmail dot com> ---
It seems it is fixed in version '8.0.1', sorry about the pointless bug report.
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>From gdb-prs-return-22018-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 17 19:14:18 2017
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Subject: [Bug threads/22297] Program terminated with signal SIGTRAP,
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
I'm confused by this bug. Why was 10-year-old bug cloned?
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>From gdb-prs-return-22019-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 17 19:15:44 2017
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Subject: [Bug threads/22297] Program terminated with signal SIGTRAP,
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Closing.
*** This bug has been marked as a duplicate of bug 9463 ***
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Subject: [Bug threads/9463] Program terminated with signal SIGTRAP,
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
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CC| |orgusuk at gmail dot com
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
*** Bug 22297 has been marked as a duplicate of this bug. ***
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>From gdb-prs-return-22021-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Oct 17 19:18:15 2017
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Subject: [Bug threads/9463] Program terminated with signal SIGTRAP,
Trace/breakpoint trap
Date: Tue, 17 Oct 2017 19:18:00 -0000
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
> This is the same as PR threads/2321. I think something must be wrong
> with Gentoo's latest glibc; it does not happen on any other system.
>
Marking as dup then.
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Subject: [Bug threads/9426] After upgrading glibc to v. 2.6.1, receive error
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |mihai.stanescu at gmail dot com
--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
*** Bug 9463 has been marked as a duplicate of this bug. ***
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Subject: [Bug threads/9463] Program terminated with signal SIGTRAP,
Trace/breakpoint trap
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
CC| |palves at redhat dot com
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
Really marking as dup.
*** This bug has been marked as a duplicate of bug 9426 ***
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To: gdb-prs@sourceware.org
Subject: [Bug threads/9426] After upgrading glibc to v. 2.6.1, receive error
stating "ptrace: No such process."
Date: Tue, 17 Oct 2017 19:20:00 -0000
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--- Comment #9 from Pedro Alves <palves at redhat dot com> ---
There's no point in keeping this open. Too much has changed meanwhile. If
there's still a problem, please file a new bug with new info.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug threads/9426] After upgrading glibc to v. 2.6.1, receive error
stating "ptrace: No such process."
Date: Tue, 17 Oct 2017 19:21:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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>From gdb-prs-return-22026-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 18 16:44:44 2017
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18072] 180 fails in gdb.base/watchpoint-reuse-slot.exp on
aarch64-linux-gnu
Date: Wed, 18 Oct 2017 16:44:00 -0000
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weimin.pan at oracle dot com changed:
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CC| |weimin.pan at oracle dot com
--- Comment #1 from weimin.pan at oracle dot com ---
The test is now passing with upstream gdb:
% make check TESTS="gdb.base/watchpoint-reuse-slot.exp"
make[1]: Entering directory '/home/wepan/binutils-gdb/gdb/testsuite'
Nothing to be done for all...
make check-single
make[2]: Entering directory '/home/wepan/binutils-gdb/gdb/testsuite'
rootme=`pwd`; export rootme; srcdir=. ; export srcdir ; EXPECT=`if [ "${READ1}"
!= "" ] ; then echo ${rootme}/expect-read1; elif [ -f
${rootme}/../../expect/expect ] ; then echo ${rootme}/../../expect/expect ;
else echo expect ; fi` ; export EXPECT ; EXEEXT= ; export EXEEXT ;
LD_LIBRARY_PATH=$rootme/../../expect:$rootme/../../libstdc++:$rootme/../../tk/unix:$rootme/../../tcl/unix:$rootme/../../bfd:$rootme/../../opcodes:$LD_LIBRARY_PATH;
export LD_LIBRARY_PATH; if [ -f ${rootme}/../../expect/expect ] ; then
TCL_LIBRARY=${srcdir}/../../tcl/library ; export TCL_LIBRARY ; fi ; runtest
--status gdb.base/watchpoint-reuse-slot.exp
Test Run By wepan on Wed Oct 18 09:35:30 2017
Native configuration is aarch64-unknown-linux-gnu
=== gdb tests ===
Schedule of variations:
unix
Running target unix
Using /usr/share/dejagnu/baseboards/unix.exp as board description file for
target.
Using /usr/share/dejagnu/config/unix.exp as generic interface file for target.
Using /home/wepan/binutils-gdb/gdb/testsuite/config/unix.exp as
tool-and-target-specific interface file.
Running
/home/wepan/binutils-gdb/gdb/testsuite/gdb.base/watchpoint-reuse-slot.exp ...
=== gdb Summary ===
# of expected passes 1521
/home/wepan/binutils-gdb/gdb/testsuite/../../gdb/gdb version
8.0.50.20170915-git -nw -nx -data-directory
/home/wepan/binutils-gdb/gdb/testsuite/../data-directory
make[2]: Leaving directory '/home/wepan/binutils-gdb/gdb/testsuite'
make[1]: Leaving directory '/home/wepan/binutils-gdb/gdb/testsuite'
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>From gdb-prs-return-22027-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 18 16:51:08 2017
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Subject: [Bug gdb/18071] TLS variables can't be resolved on aarch64-linux-gnu
Date: Wed, 18 Oct 2017 16:51:00 -0000
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>From gdb-prs-return-22028-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 18 20:00:45 2017
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From: "mgulick at mathworks dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug backtrace/16577] GDB crash on attempted read from deleted
shared library
Date: Wed, 18 Oct 2017 20:00:00 -0000
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Mike Gulick <mgulick at mathworks dot com> changed:
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--- Comment #3 from Mike Gulick <mgulick at mathworks dot com> ---
I bisected this crash and git points to commit
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=4bf44c1cf1abad13fcda09e20983757f175c6dca
Debugging gdb built from this revision gives the following stack trace:
Program received signal SIGSEGV, Segmentation fault.
0x0000000000739dd8 in bfd_getl32 (p=0x0) at libbfd.c:622
622 v = (unsigned long) addr[0];
(gdb) bt
#0 0x0000000000739dd8 in bfd_getl32 (p=0x0) at libbfd.c:622
#1 0x00000000006694ac in read_initial_length (abfd=0x11fe4110, buf=0x0,
bytes_read_ptr=0x7ffc4e4dcd84) at dwarf2-frame.c:1526
#2 0x0000000000669eb6 in decode_frame_entry_1 (unit=0x145a6410, start=0x0,
eh_frame_p=1, cie_table=0x7ffc4e4dcef0, fde_table=0x7ffc4e4dcee0,
entry_type=EH_CIE_OR_FDE_TYPE_ID) at dwarf2-frame.c:1837
#3 0x000000000066aa43 in decode_frame_entry (unit=0x145a6410, start=0x0,
eh_frame_p=1, cie_table=0x7ffc4e4dcef0, fde_table=0x7ffc4e4dcee0,
entry_type=EH_CIE_OR_FDE_TYPE_ID) at dwarf2-frame.c:2135
#4 0x000000000066af60 in dwarf2_build_frame_info (objfile=0x1484e2a0)
at dwarf2-frame.c:2292
#5 0x0000000000669b86 in dwarf2_frame_find_fde (pc=0x7ffc4e4dd070,
out_offset=0x0) at dwarf2-frame.c:1749
#6 0x0000000000669245 in dwarf2_frame_sniffer (
self=0x8a4da0 <dwarf2_frame_unwind>, this_frame=0x116fd00,
this_cache=0x116fd18) at dwarf2-frame.c:1382
#7 0x00000000006d735f in frame_unwind_find_by_frame (this_frame=0x116fd00,
this_cache=0x116fd18) at frame-unwind.c:112
#8 0x00000000006d2a1a in get_frame_id (fi=0x116fd00) at frame.c:334
#9 0x00000000005b6399 in step_1 (skip_subroutines=1, single_inst=0,
count_string=0x0) at infcmd.c:917
#10 0x00000000005b61bf in next_command (count_string=0x0, from_tty=1)
at infcmd.c:855
I believe there are two separate issues to (possibly) fix here:
1. The gdb segfault when stepping the debugger.
2. The errors/warnings about not being able to open the jna file.
I have a preliminary patch to fix 1) that I will post to gdb-patches for
feedback. It is debatable whether 2) should be fixed, as that likely involves
a special-case to detect and bypass jna files that could yield false-positives.
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>From gdb-prs-return-22029-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Oct 19 02:17:32 2017
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/21870] aarch64: Leftover uncleared debug registers
Date: Thu, 19 Oct 2017 02:17:00 -0000
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--- Comment #2 from weimin.pan at oracle dot com ---
A proposed fix was submitted:
https://sourceware.org/ml/gdb-patches/2017-10/msg00149.html
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>From gdb-prs-return-22030-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Oct 19 07:53:04 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18072] 180 fails in gdb.base/watchpoint-reuse-slot.exp on
aarch64-linux-gnu
Date: Thu, 19 Oct 2017 07:53:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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----------------------------------------------------------------------------
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--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
This bug was fixed by commit ca5fd19bfb2a41fae7696d67d1f4dce5d5a9053a
(watchpoint-reuse-slot.exp: skip setting HW breakpoints on some address), but I
forgot to mention the PR in commit log, so that commit wasn't associated with
this PR. Thanks for verifying this. I'll close this bug.
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>From gdb-prs-return-22031-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Oct 19 08:33:12 2017
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--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to Jan Kratochvil from comment #0)
> Created attachment 10295 [details]
> .c standalone testcase
>
> Testcase verifies if the debug registers are cleared after it is run.
> Standalone execution is OK but being spawned from GDB reports an error:
>
> # ./gdb ~/aarch64-watchpoint
> GNU gdb (GDB) 8.0.50.20170731-git
> (gdb) run
> Starting program: /root/aarch64-watchpoint
> aarch64-watchpoint: aarch64-watchpoint.c:91: set_watchpoint: Assertion
> `(((dreg_state.dbg_regs[0].ctrl) >> 5) & 0xff) == 0' failed.
I don't see how does GDB touches hw debug registers, in this case. I have no
idea that why DR_CONTROL_LENGTH (dreg_state.dbg_regs[0].ctrl) is changed to
non-zero.
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Subject: [Bug backtrace/16577] GDB crash on attempted read from deleted
shared library
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--- Comment #4 from Mike Gulick <mgulick at mathworks dot com> ---
Created attachment 10544
--> https://sourceware.org/bugzilla/attachment.cgi?id=10544&action=edit
Updated reproducer to reproduce crash on current git tip
See README.TXT for instructions.
Updated reproducer no longer relies on being in /tmp, and reproduces the
problem instantly (no more sleep()).
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From: "night_ghost at ykoctpa dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
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--- Comment #5 from night_ghost at ykoctpa dot ru ---
>did you report the bug to whom you got toolchain from?
toolchain is from arm.com and they sayd to report bugs to GDB developers
>Could you try with a more up to date pristine/upstream GDB?
where I can get recent toolchain for Linux 32bit with upstream GDB
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #6 from Yao Qi <qiyao at gcc dot gnu.org> ---
(In reply to night_ghost from comment #5)
> >did you report the bug to whom you got toolchain from?
>
> toolchain is from arm.com and they sayd to report bugs to GDB developers
>
>
> >Could you try with a more up to date pristine/upstream GDB?
>
> where I can get recent toolchain for Linux 32bit with upstream GDB
You can get gdb release here https://sourceware.org/gdb/download/, configure
it with --target=arm-none-eabi.
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Subject: [Bug gdb/22340] New: attach in gdb/mi doesn't display prompt
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Bug ID: 22340
Summary: attach in gdb/mi doesn't display prompt
Product: gdb
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When using gdb in mi mode (gdb -i=mi), the "(gdb)" prompt is not displayed
properly when running the "attach" command. This is reproducible in emacs gdb
mode. I also tested this with the 'gdbgui' tool, which also gets confused as
to whether gdb is ready to accept more input after attaching to a process.
The issue seems to be that the gdb output doesn't print the "(gdb)\n" prompt
immediately after printing "^done" (output is from GDB 8.0.1):
(gdb)
attach 31473
&"attach 31473\n"
~"Attaching to process 31473\n"
=thread-group-started,id="i1",pid="31473"
=thread-created,id="1",group-id="i1"
--> ^done
~"Reading symbols from /bin/sleep..."
~"(no debugging symbols found)...done.\n"
=library-loaded,id="/lib/x86_64-linux-gnu/libc.so.6",target-name="/lib/x86_64-linux-gnu/libc.so.6",host-name="/lib/x86_64-linux-gnu/libc.so.6",symbols-loaded="0",thread-group="i1",ranges=[{from="0x00007f3869fd34a0",to="0x00007f386a0ff943"}]
=library-loaded,id="/lib64/ld-linux-x86-64.so.2",target-name="/lib64/ld-linux-x86-64.so.2",host-name="/lib64/ld-linux-x86-64.so.2",symbols-loaded="0",thread-group="i1",ranges=[{from="0x00007f386a35fae0",to="0x00007f386a378140"}]
~"Reading symbols from /lib/x86_64-linux-gnu/libc.so.6..."
~"(no debugging symbols found)...done.\n"
~"Reading symbols from /lib64/ld-linux-x86-64.so.2..."
~"(no debugging symbols fou2nd)...done.\n"
~"0x00007f386a06df10 in nanosleep () from
/lib/x86_64-linux-gnu/libc.so.6\n"
*stopped,frame={addr="0x00007f386a06df10",func="nanosleep",args=[],from="/lib/x86_64-linux-gnu/libc.so.6"},thread-id="1",stopped-threads="all",core="5"
--> (gdb)
I get the impression from the GDB/MI syntax
(https://sourceware.org/gdb/onlinedocs/gdb/GDB_002fMI-Output-Syntax.html#GDB_002fMI-Output-Syntax)
that a result record *must* be immediately followed by a "(gdb)\n" prompt.
This behavior apparently changed in GDB 7.8 (I only very recently started using
GDB/MI mode, so never noticed this change). A git bisect points at this
commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=329ea57934a9d4b250a0b417af1ec47bc2d0ceb6
Up until GDB 7.11, I could work around this by running 'maint set target-async
off'. This restored the previous prompting behavior, and this make emacs work
as expected. However this stopped working in GDB 7.11. It looks like this
behavior changed with this commit:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=0b333c5e7d6c3fc65d37ffa11bd21ba52c4adb25.
Reproduction steps:
$ emacs --version
GNU Emacs 24.4.1
$ sleep 1000 &
[1] 14132
$ emacs -nw
...
>> M-x gdb
>> Run gdb (like this): gdb -n -i=mi
...
GNU gdb (GDB) 8.0.50.20171023-git
...
(gdb) attach 14132
Attaching to process 14132
(gdb) Reading symbols from /bin/sleep...(no debugging symbols found)...done.
Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...(no debugging symbols
found)...done.
Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols
found)...done.
0x00007f29a9214f10 in nanosleep () from /lib/x86_64-linux-gnu/libc.so.6
---
Also tested on Emacs 25.1.1 (Debian 9), with no change in behavior.
I'm inclined to point the finger at gdb's mi mode rather than emacs, since
'gdbgui' also fails under similar conditions, but an emacs fix would be just as
good.
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
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--- Comment #5 from evan.torrie at yahoo dot com ---
This also occurs on Mac OS X 10.13 (High Sierra)
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Wed, 25 Oct 2017 04:31:00 -0000
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--- Comment #6 from Shahzeb <shahzeb001 at gmail dot com> ---
This problem still isn't resolved, but I came up with a solution: Simply run a
docker container I've built which has GDB within it. Instructions on my github:
https://github.com/shahzeb1/cpp-gdb-docker-image
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Subject: [Bug breakpoints/22350] New: Attempt to set a breakpoint results in
out of bounds access to std::vector<partial_symbol*>
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https://sourceware.org/bugzilla/show_bug.cgi?id=22350
Bug ID: 22350
Summary: Attempt to set a breakpoint results in out of bounds
access to std::vector<partial_symbol*>
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: b7.10110111 at gmail dot com
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Created attachment 10555
--> https://sourceware.org/bugzilla/attachment.cgi?id=10555&action=edit
Abort backtrace
I'm using a modified version of stl_vector.h, where I added some assertions
into methods like std::vector::operator[]() which check that the argument fits
actual size of the vector.
When compiling GDB 8.0.50.20171025-git with this setup (GCC 5.4.1), I get the
following assertion failure on any attempt to set a breakpoint:
$ gdb -q -ex 'b main' gdb
Reading symbols from gdb...done.
gdb: /usr/include/c++/5/bits/stl_vector.h:792: std::vector<_Tp,
_Alloc>::reference std::vector<_Tp, _Alloc>::operator[](std::vector<_Tp,
_Alloc>::size_type) [with _Tp = partial_symbol*; _Alloc =
std::allocator<partial_symbol*>; std::vector<_Tp, _Alloc>::reference =
partial_symbol*&; std::vector<_Tp, _Alloc>::size_type = long unsigned int]:
Assertion `__n<size()' failed.
I'm attaching the full backtrace of aborted GDB.
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>From gdb-prs-return-22039-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Oct 25 17:01:30 2017
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22350] Attempt to set a breakpoint results in out
of bounds access to std::vector<partial_symbol*>
Date: Wed, 25 Oct 2017 17:01:00 -0000
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--- Comment #1 from Ruslan <b7.10110111 at gmail dot com> ---
Test system is Kubuntu 14.04 amd64.
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>From gdb-prs-return-22040-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Oct 26 23:39:08 2017
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Subject: [Bug symtab/20899] "dwarf2_string_attr" does not check for
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-8.0-branch branch has been updated by Simon Marchi
<simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=06848393c68c1b370cf2441756ed7413f4442515
commit 06848393c68c1b370cf2441756ed7413f4442515
Author: Leszek Swirski <leszeks@google.com>
Date: Thu Oct 26 19:19:33 2017 -0400
Fix dwarf2_string_attr for -gsplit-dwarf
The dwarf2_string_attr did not allow DW_FORM_GNU_str_index as a form for
string types. This manifested as null strings in the namespace_name
lookup (replaced with "(anonymous namespace)") when debugging
Fission-compiled code.
(cherry picked from commits 16eb6b2db49e6cf2fdca56efd37689fcc170cd37 and
b33404388e5bbd8a1fddfde73cd4593ae2b557e8)
gdb/ChangeLog:
PR symtab/20899
* dwarf2read.c (dwarf2_string_attr): Allow DW_FORM_GNU_str_index.
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>From gdb-prs-return-22041-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Oct 27 06:22:44 2017
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From: "night_ghost at ykoctpa dot ru" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
Date: Fri, 27 Oct 2017 06:22:00 -0000
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--- Comment #7 from night_ghost at ykoctpa dot ru ---
tested with upstream, crash seems to be gone
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>From gdb-prs-return-22042-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Oct 27 08:17:04 2017
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Subject: [Bug gdb/22271] GDB fails on "assertion failed"
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #8 from Yao Qi <qiyao at gcc dot gnu.org> ---
It is already fixed in the recent GDB releases. Close it.
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>From gdb-prs-return-22043-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Oct 27 12:27:15 2017
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Fri, 27 Oct 2017 12:27:00 -0000
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Andy Law <question123446 at gmail dot com> changed:
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--- Comment #7 from Andy Law <question123446 at gmail dot com> ---
Gdb 8.0.1 doesn't have this problem as I see. However, the dynamic library
still can't debug at all. It can't collect debug symbols...
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Subject: [Bug gdb/13669] Infinite recursion in cp_print_value_fields
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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--- Comment #18 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=a43f3893f6cb66dfca7f628cd159a008009ad06f
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>From gdb-prs-return-22045-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Oct 27 14:39:42 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/22356] New: [AArch64] 128-bit Q registers are not well
handled in displaced stepping and fast tracepoint
Date: Fri, 27 Oct 2017 14:39:00 -0000
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Bug ID: 22356
Summary: [AArch64] 128-bit Q registers are not well handled in
displaced stepping and fast tracepoint
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
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AArch64 GDB relies on "instruction relocation" (in arch/aarch64-insn.c) to
handle both displaced stepping and fast tracepoint. However, it doesn't handle
any instructions using Q registers.
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Subject: [Bug tdep/22356] [AArch64] 128-bit Q registers are not well handled
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--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Created attachment 10558
--> https://sourceware.org/bugzilla/attachment.cgi?id=10558&action=edit
A patch as a reproducer.
With this patch applied, the bug can be reproduced running
disp-step-insn-reloc.exp.
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Subject: [Bug python/21213] garbarge collector eats gdb.selected_thread()
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |simon.marchi at ericsson dot com
Resolution|--- |FIXED
--- Comment #2 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=484d8d361de65a8489252d14511b77c142d859a1
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To: gdb-prs@sourceware.org
Subject: [Bug symtab/22365] New: "info locals" on an unitialized yet vector
causes long garbage print
Date: Sun, 29 Oct 2017 12:47:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22365
Bug ID: 22365
Summary: "info locals" on an unitialized yet vector causes long
garbage print
Product: gdb
Version: 7.11.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: symtab
Assignee: unassigned at sourceware dot org
Reporter: n-gcc at nn dot kiev.ua
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With the code of function shown below, "info locals" causes print of local
variable (namely, std::vector) of uninitialized value. Due to extreme length as
result of garbage, this spoils output and hangs execution.
The function beginning (relevant part) is:
int solution(int N, int A, int B, int C, int D) {
Point pointF = Point(A, B);
Point pointS = Point(C, D);
if (pointS == pointF) {
return 0;
}
int basicMazeSize = int(pow(2, N + 1));
Maze basicMaze = Maze(Point(0, 0), Point(basicMazeSize,
basicMazeSize));
vector <OrientedMaze> mazesF;
mazesF.push_back(OrientedMaze(basicMaze, O_up));
vector <OrientedMaze> mazesS;
mazesS.push_back(OrientedMaze(basicMaze, O_up));
[... skip rest ...]
debugger is stopped at breakpoint at the first function line (`Point pointF =
Point(A, B);`);
and, `info locals` emits: (prefix [debug] is from Code::Blocks debugger window)
[debug]> info locals
[debug]pointF = {
[debug] x = 2,
[debug] y = 0
[debug]}
[debug]pointS = {
[debug] x = 20974602,
[debug] y = 0
[debug]}
[debug]basicMazeSize = 32767
[debug]basicMaze = {
[debug] lowerLeft = {
[debug] x = -7268,
[debug] y = 32767
[debug] },
[debug] upperRight = {
[debug] x = -7264,
[debug] y = 32767
[debug] }
[debug]}
[debug]mazesF = std::vector of length 6954038, capacity 6954038 = {{
[debug] maze = {
[debug] lowerLeft = {
[debug] x = 415531848,
[debug] y = 254699203
[debug] },
[debug] upperRight = {
[debug] x = 33823,
[debug] y = 1207959552
[debug] }
[debug] },
[debug] orientation = 1208544387
[debug] }, {
[debug] maze = {
[debug] lowerLeft = {
and so on (millions of lines until stopped).
here, not only mazesF is wrong (pointF, pointS are also filled with initial
garbage), but vector length causes its full printing.
Exact gdb version:
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
(gdb) show configuration
This GDB was configured as follows:
configure --host=x86_64-linux-gnu --target=x86_64-linux-gnu
--with-auto-load-dir=$debugdir:$datadir/auto-load
--with-auto-load-safe-path=$debugdir:$datadir/auto-load
--with-expat
--with-gdb-datadir=/usr/share/gdb (relocatable)
--with-jit-reader-dir=/usr/lib/gdb (relocatable)
--without-libunwind-ia64
--with-lzma
--with-python=/usr (relocatable)
--without-guile
--with-separate-debug-dir=/usr/lib/debug (relocatable)
--with-system-gdbinit=/etc/gdb/gdbinit
--with-babeltrace
For solution: I don't have a patch, but only an idea that pretty printer shall
take variable initialization status into account, and avoid working on details
in such cases.
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From: "n-gcc at nn dot kiev.ua" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/22365] "info locals" on an unitialized yet vector causes
long garbage print
Date: Sun, 29 Oct 2017 14:28:00 -0000
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--- Comment #1 from Valentin Nechayev <n-gcc at nn dot kiev.ua> ---
I have found gdb has limit on this print (`set print elements`) but
Code::Blocks directly disables it with `set print elements 0`.
So, anyway this isn't a _bug_ in gdb because it behaves exactly as specified.
I'll consider filing a bug to Code::Blocks.
OTOH, protection against printing unitialized values can be useful, so I
consider not closing it. Feel free to deal with this report in any way.
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>From gdb-prs-return-22050-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 30 01:41:57 2017
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From: "astian at elude dot in" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug record/22368] New: Assertion failure during recorded execution
Date: Mon, 30 Oct 2017 01:41:00 -0000
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Bug ID: 22368
Summary: Assertion failure during recorded execution
Product: gdb
Version: 8.0
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Assignee: unassigned at sourceware dot org
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I ran into the following 2 assertion failures when trying to record execution
of a function:
1. /build/gdb-uGdIdO/gdb-7.12/gdb/record-full.c:1066: internal-error: ptid_t
record_full_wait_1(target_ops*, ptid_t, target_waitstatus*, int): Assertion
`(options & TARGET_WNOHANG) != 0' failed.
2. /build/gdb-uGdIdO/gdb-7.12/gdb/nat/x86-linux-dregs.c:146: internal-error:
void x86_linux_update_debug_registers(lwp_info*): Assertion `lwp_is_stopped
(lwp)' failed.
It happened for the first time while trying to record execution of a keyboard
event handler for a GTK+ widget provided by the `spice-gtk` library and used
in the SPICE client `remote-viewer`, part of the `virt-viewer` package.
Initially I thought it had something to do with the peculiar situation I was
trying to debug: with the keyboard partially "stuck" due to (methinks) being
in the middle of an X server "grab". However, after some experimentation, I
rather think that some threading shenanigans are at play: the same errors
occur when attempting to record other, more typical, functions in the same
program.
I also confirmed that the recording steps I'm trying to carry out do work when
applied to other functions and other programs.
STR:
1. On a Debian unstable system (with a configured debug-symbols repository):
# apt install gdb virt-viewer virt-viewer-dbgsym
libspice-client-gtk-3.0-5-dbgsym
Which should give you the following packages (among others):
Package Version
-------------------------------------------------------------
gdb 7.12-6+b1 (7.12.0.20161007-git)
virt-viewer 6.0-2
libspice-client-gtk-3.0-5 0.34-1.1
2. Set up some SPICE server. In my case I have a Xen VM for which QEMU
serves the desktop via a SPICE server.
3. Run:
$ gdb -x rv.gdb
Where "rv.gdb" contains (change the address of the spice server as
needed):
# Avoid problems with GDB's "record" and call trampolines which
# usually manifests as:
# Process record does not support instruction 0xc5 at address
0x7ffff7be0990.
# Process record: failed to record execution log.
set environment LD_BIND_NOW 1
# Avoid interruptions.
set pagination off
set record full stop-at-limit off
file /usr/bin/remote-viewer
start spice://localhost:12333
# This was the original reproducer for this bug. To trigger this
# breakpoint, bring remote-viewer's window into focus and press (or
# release) some key.
#
# Function "key_event" (in library "spice-gtk") is a GTK+ widget
# keyboard event handler.
#break key_event
#commands
#echo Recording function...\n
#record
#finish
#end
break virt_viewer_app_on_application_startup
# Uncomment this "next" and you get a different error, see below.
#next
continue
next
Result: GDB stops because of an assertion failure. The failed assertion is
one of the two listed above. It varies which one but the 1st is most common.
I also reproduced the bug using my own from-source debug builds of GDB (from
8.0.50-20171029 tarball), virt-viewer (from Debian source package) and
spice-gtk (from Debian source package).
Example transcript showing the first assertion failure:
$ gdb -x rv.gdb
GNU gdb (Debian 7.12-6+b1) 7.12.0.20161007-git
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Temporary breakpoint 1 at 0x129b0: file remote-viewer-main.c, line 35.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1, main (argc=2, argv=0x7fffffffe278) at
remote-viewer-main.c:35
35 remote-viewer-main.c: No such file or directory.
Breakpoint 2 at 0x5555555709a0: file virt-viewer-app.c, line 1811.
[New Thread 0x7fffe18cf700 (LWP 15211)]
[New Thread 0x7fffe10ce700 (LWP 15212)]
Thread 1 "remote-viewer" hit Breakpoint 2,
virt_viewer_app_on_application_startup (app=0x5555557f2300 [RemoteViewer]) at
virt-viewer-app.c:1811
1811 virt-viewer-app.c: No such file or directory.
/build/gdb-uGdIdO/gdb-7.12/gdb/record-full.c:1066: internal-error: ptid_t
record_full_wait_1(target_ops*, ptid_t, target_waitstatus*, int): Assertion
`(options & TARGET_WNOHANG) != 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/build/gdb-uGdIdO/gdb-7.12/gdb/record-full.c:1066: internal-error: ptid_t
record_full_wait_1(target_ops*, ptid_t, target_waitstatus*, int): Assertion
`(options & TARGET_WNOHANG) != 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
Aborted (core dumped)
(I can provide the core dump if required.)
In the script, if instead of:
break ...
continue
next
...one does:
break ...
next
continue
next
...instead of the assertion failure we get:
[...]
Temporary breakpoint 1, main (argc=2, argv=0x7fffffffe278) at
remote-viewer-main.c:35
35 remote-viewer-main.c: No such file or directory.
Breakpoint 2 at 0x5555555709a0: file virt-viewer-app.c, line 1811.
[New Thread 0x7fffe18cf700 (LWP 15504)]
[New Thread 0x7fffe10ce700 (LWP 15505)]
Thread 1 "remote-viewer" hit Breakpoint 2,
virt_viewer_app_on_application_startup (app=0x5555557f2300 [RemoteViewer]) at
virt-viewer-app.c:1811
1811 virt-viewer-app.c: No such file or directory.
1812 in virt-viewer-app.c
rv.gdb:16: Error in sourced command file:
Couldn't get registers: No such process.
(gdb)
The inferior seems to be in a very bad state now:
(gdb) next
Cannot execute this command while the selected thread is running.
Also note that the active thread was changed from 1 to 3:
(gdb) info thread
Id Target Id Frame
1 Thread 0x7ffff7f8c540 (LWP 15500) "remote-viewer" (running)
2 Thread 0x7fffe18cf700 (LWP 15504) "gmain" (running)
* 3 Thread 0x7fffe10ce700 (LWP 15505) "gdbus" (running)
Changing it back to 1 does not help.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug symtab/22365] "info locals" on an unitialized yet vector causes
long garbage print
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https://sourceware.org/bugzilla/show_bug.cgi?id=22365
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
> OTOH, protection against printing unitialized values can be useful, so I
> consider not closing it. Feel free to deal with this report in any way.
There's no way for GDB to know whether the value was initialized or not. Also,
printing an uninitialized value is really no different from printing a value
that was initialized but has meanwhile been corrupted. gdb and pretty printers
must be robust against either case.
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>From gdb-prs-return-22052-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Oct 30 14:27:35 2017
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From: "astian at elude dot in" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug record/22368] Assertion failure during recorded execution
Date: Mon, 30 Oct 2017 14:27:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22368
--- Comment #1 from astian at elude dot in ---
But of course I screw up the STR!
This:
> break virt_viewer_app_on_application_startup
> # Uncomment this "next" and you get a different error, see below.
> #next
> continue
> next
Should be:
> break virt_viewer_app_on_application_startup
continue
> # Uncomment this "next" and you get a different error, see below.
> #next
record
> next
That is: run until the breakpoint, optionally execute one line, start
recording, execute one line (instead of "next", "step" or even "stepi" also
work).
Similarly, this:
> In the script, if instead of:
>
> break ...
> continue
> next
>
> ...one does:
>
> break ...
> next
> continue
> next
Should be:
> In the script, if instead of:
>
> break ...
> continue
record
> next
>
> ...one does:
>
> break ...
continue
> next
record
> next
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To: gdb-prs@sourceware.org
Subject: [Bug record/22368] Assertion failure during recorded execution
Date: Mon, 30 Oct 2017 14:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22368
--- Comment #2 from astian at elude dot in ---
Here's a transcript of a debug build of GDB 8.0.50.20171029-git debugging
another instance of itself while the bug is triggered:
$ ~/src/gdb/build/gdb/gdb --data-directory ~/src/gdb/build/gdb/data-directory
-ex 'add-auto-load-safe-path ~/src/gdb/build/gdb/gdb-gdb.gdb' -ex 'set
pagination off' -ex 'file ~/src/gdb/build/gdb/gdb' -ex 'run --data-directory
~/src/gdb/build/gdb/data-directory -q -x /tmp/rv.gdb'
GNU gdb (GDB) 8.0.50.20171029-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
Reading symbols from ~/src/gdb/build/gdb/gdb...done.
Setting up the environment for debugging gdb.
During symbol reading, unsupported tag: 'DW_TAG_unspecified_type'.
Breakpoint 1 at 0x23bee7: file
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/common/errors.c, line 51.
During symbol reading, const value length mismatch for 'std::ratio<1,
1000000000>::num', got 8, expected 0.
During symbol reading, cannot get low and high bounds for subprogram DIE at
5383969.
During symbol reading, Child DIE 0x5379df and its abstract origin 0x53ea06
have different parents.
During symbol reading, DIE 0x540b48 and its abstract origin 0x53d20b have
different tags.
During symbol reading, DW_AT_call_target target DIE has invalid low pc, for
referencing DIE 0x5448a7 [in module /home/astian/src/gdb/build/gdb/gdb].
Breakpoint 2 at 0x113eb8: file
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c, line 214.
Starting program: /home/astian/src/gdb/build/gdb/gdb --data-directory
~/src/gdb/build/gdb/data-directory -q -x /tmp/rv.gdb
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1 at 0x163aa: file remote-viewer-main.c, line 35.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Temporary breakpoint 1, main (argc=2, argv=0x7fffffffe1e8) at
remote-viewer-main.c:35
35 {
Breakpoint 2 at 0x555555570ac4: file virt-viewer-app.c, line 1811.
[New Thread 0x7fffe18cf700 (LWP 30603)]
[New Thread 0x7fffe10ce700 (LWP 30604)]
Thread 1 "remote-viewer" hit Breakpoint 2,
virt_viewer_app_on_application_startup (app=0x5555557f2300) at
virt-viewer-app.c:1811
1811 {
Breakpoint 1, internal_error (During symbol reading, incomplete CFI data;
unspecified registers (e.g., rax) at 0x55555578feee.
During symbol reading, unsupported tag: 'DW_TAG_unspecified_type'.
During symbol reading, const value length mismatch for 'std::ratio<1,
1000000000>::num', got 8, expected 0.
During symbol reading, Child DIE 0x22bc781 and its abstract origin 0x22c6c36
have different parents.
During symbol reading, cannot get low and high bounds for subprogram DIE at
36440152.
file=file@entry=0x555555a67068
"/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c",
line=line@entry=1050, fmt=0x5555559a849f "%s: Assertion `%s' failed.") at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/common/errors.c:51
51 {
(top-gdb) bt
#0 internal_error (file=file@entry=0x555555a67068
"/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c",
line=line@entry=1050, fmt=0x5555559a849f "%s: Assertion `%s' failed.") at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/common/errors.c:51
#1 0x0000555555828a31 in record_full_wait_1 (During symbol reading, DIE
0x25d29d9 and its abstract origin 0x25cab35 have different tags.
ops=0x555555ece680 <record_full_ops>, ptid=...,
status=status@entry=0x7fffffffd7b0, options=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1050
#2 0x00005555558295e5 in record_full_wait (ops=<optimized out>, ptid=...,
status=0x7fffffffd7b0, options=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1330
#3 0x000055555585e907 in delegate_wait (self=<optimized out>, arg1=...,
arg2=<optimized out>, arg3=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/target-delegates.c:138
#4 0x000055555586cd9d in target_wait (During symbol reading, Member function
"~displaced_step_closure" (offset 30910879) is virtual but the vtable offset is
not specified.
During symbol reading, DW_AT_call_target target DIE has invalid low pc, for
referencing DIE 0x1d8a856 [in module /home/astian/src/gdb/build/gdb/gdb].
During symbol reading, Child DIE 0x1d94d41 and its abstract origin 0x1d95953
have different tags.
ptid=..., status=status@entry=0x7fffffffd7b0, options=options@entry=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/target.c:2179
#5 0x00005555557d0f25 in wait_one (ws=ws@entry=0x7fffffffd7b0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:4345
#6 0x00005555557d5599 in stop_all_threads () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:4558
#7 0x00005555557d599e in stop_waiting (ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:7658
#8 0x00005555557d59b7 in end_stepping_range (ecs=ecs@entry=0x7fffffffdc50)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:7838
#9 0x00005555557d8c6f in process_event_stop_test
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:6979
#10 0x00005555557d9d67 in handle_signal_stop (ecs=ecs@entry=0x7fffffffdc50)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:6189
#11 0x00005555557daf50 in handle_inferior_event_1
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:5378
#12 0x00005555557db061 in handle_inferior_event
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:5413
#13 0x00005555557db663 in fetch_inferior_event
(client_data=client_data@entry=0x0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:3927
#14 0x00005555557c554e in inferior_event_handler
(event_type=event_type@entry=INF_REG_EVENT, client_data=client_data@entry=0x0)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/inf-loop.c:43
#15 0x0000555555825e45 in record_full_async_inferior_event_handler
(data=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:769
#16 0x0000555555796384 in check_async_event_handlers () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-loop.c:1064
#17 0x0000555555796ef8 in gdb_do_one_event () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-loop.c:326
During symbol reading, Multiple children of DIE 0x26da14a refer to DIE
0x26da13a as their abstract origin.
#18 0x000055555587f0b5 in wait_sync_command_done () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:505
#19 0x000055555587f104 in maybe_wait_sync_command_done (was_sync=<optimized
out>, was_sync@entry=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:522
#20 0x000055555587f2f1 in execute_command (p=<optimized out>,
p@entry=0x55555610f440 "next", from_tty=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:610
#21 0x0000555555797f6f in command_handler (command=0x55555610f440 "next") at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-top.c:583
#22 0x000055555587fa3f in read_command_file (During symbol reading, No
DW_FORM_block* DW_AT_call_value for DW_TAG_call_site child DIE 0x5cd91f [in
module /home/astian/src/gdb/build/gdb/gdb].
stream=stream@entry=0x5555560c4a80) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:426
#23 0x0000555555672318 in script_from_file (stream=0x5555560c4a80,
file=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-script.c:1582
#24 0x0000555555666f10 in source_script_from_stream (stream=0x5555560c4a80,
file=0x7fffffffe558 "/tmp/rv.gdb", file_to_open=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:596
#25 0x00005555556699d5 in source_script_with_search (file=0x7fffffffe558
"/tmp/rv.gdb", from_tty=1, search_path=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:632
#26 0x0000555555669ab3 in source_script (file=file@entry=0x7fffffffe558
"/tmp/rv.gdb", from_tty=from_tty@entry=1) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:642
#27 0x00005555557f0939 in catch_command_errors (command=0x555555669aa5
<source_script(char const*, int)>, arg=0x7fffffffe558 "/tmp/rv.gdb",
from_tty=1) at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:405
#28 0x00005555557f1983 in captured_main_1
(context=context@entry=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1116
#29 0x00005555557f1abe in captured_main (data=data@entry=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1142
#30 0x00005555557f1b63 in gdb_main (args=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1168
#31 0x00005555555fbe85 in main (argc=<optimized out>, argv=<optimized out>)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/gdb.c:32
(top-gdb) c
Continuing.
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1050:
internal-error: ptid_t record_full_wait_1(target_ops*, ptid_t,
target_waitstatus*, int): Assertion `(options & TARGET_WNOHANG) != 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1050:
internal-error: ptid_t record_full_wait_1(target_ops*, ptid_t,
target_waitstatus*, int): Assertion `(options & TARGET_WNOHANG) != 0' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
Program received signal SIGABRT, Aborted.
0x00007ffff6318fff in raise () from /lib/x86_64-linux-gnu/libc.so.6
(top-gdb) bt
#0 0x00007ffff6318fff in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007ffff631a42a in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x0000555555883855 in dump_core () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/utils.c:282
#3 0x0000555555886e20 in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *)
(problem=problem@entry=0x555555ea8820 <internal_error_problem>, file=<optimized
out>, line=1050, fmt=<optimized out>, ap=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/utils.c:491
#4 0x0000555555886fa5 in internal_verror (file=<optimized out>,
line=<optimized out>, fmt=<optimized out>, ap=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/utils.c:516
#5 0x000055555578ff69 in internal_error (file=file@entry=0x555555a67068
"/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c",
line=line@entry=1050, fmt=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/common/errors.c:55
#6 0x0000555555828a31 in record_full_wait_1 (ops=0x555555ece680
<record_full_ops>, ptid=..., status=status@entry=0x7fffffffd7b0, options=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1050
#7 0x00005555558295e5 in record_full_wait (ops=<optimized out>, ptid=...,
status=0x7fffffffd7b0, options=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:1330
#8 0x000055555585e907 in delegate_wait (self=<optimized out>, arg1=...,
arg2=<optimized out>, arg3=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/target-delegates.c:138
#9 0x000055555586cd9d in target_wait (ptid=...,
status=status@entry=0x7fffffffd7b0, options=options@entry=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/target.c:2179
#10 0x00005555557d0f25 in wait_one (ws=ws@entry=0x7fffffffd7b0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:4345
#11 0x00005555557d5599 in stop_all_threads () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:4558
#12 0x00005555557d599e in stop_waiting (ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:7658
#13 0x00005555557d59b7 in end_stepping_range (ecs=ecs@entry=0x7fffffffdc50)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:7838
#14 0x00005555557d8c6f in process_event_stop_test
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:6979
#15 0x00005555557d9d67 in handle_signal_stop (ecs=ecs@entry=0x7fffffffdc50)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:6189
#16 0x00005555557daf50 in handle_inferior_event_1
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:5378
#17 0x00005555557db061 in handle_inferior_event
(ecs=ecs@entry=0x7fffffffdc50) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:5413
#18 0x00005555557db663 in fetch_inferior_event
(client_data=client_data@entry=0x0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/infrun.c:3927
#19 0x00005555557c554e in inferior_event_handler
(event_type=event_type@entry=INF_REG_EVENT, client_data=client_data@entry=0x0)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/inf-loop.c:43
#20 0x0000555555825e45 in record_full_async_inferior_event_handler
(data=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/record-full.c:769
#21 0x0000555555796384 in check_async_event_handlers () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-loop.c:1064
#22 0x0000555555796ef8 in gdb_do_one_event () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-loop.c:326
#23 0x000055555587f0b5 in wait_sync_command_done () at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:505
#24 0x000055555587f104 in maybe_wait_sync_command_done (was_sync=<optimized
out>, was_sync@entry=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:522
#25 0x000055555587f2f1 in execute_command (p=<optimized out>,
p@entry=0x55555610f440 "next", from_tty=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:610
#26 0x0000555555797f6f in command_handler (command=0x55555610f440 "next") at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/event-top.c:583
#27 0x000055555587fa3f in read_command_file
(stream=stream@entry=0x5555560c4a80) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/top.c:426
#28 0x0000555555672318 in script_from_file (stream=0x5555560c4a80,
file=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-script.c:1582
#29 0x0000555555666f10 in source_script_from_stream (stream=0x5555560c4a80,
file=0x7fffffffe558 "/tmp/rv.gdb", file_to_open=<optimized out>) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:596
#30 0x00005555556699d5 in source_script_with_search (file=0x7fffffffe558
"/tmp/rv.gdb", from_tty=1, search_path=0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:632
#31 0x0000555555669ab3 in source_script (file=file@entry=0x7fffffffe558
"/tmp/rv.gdb", from_tty=from_tty@entry=1) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/cli/cli-cmds.c:642
#32 0x00005555557f0939 in catch_command_errors (command=0x555555669aa5
<source_script(char const*, int)>, arg=0x7fffffffe558 "/tmp/rv.gdb",
from_tty=1) at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:405
#33 0x00005555557f1983 in captured_main_1
(context=context@entry=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1116
#34 0x00005555557f1abe in captured_main (data=data@entry=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1142
#35 0x00005555557f1b63 in gdb_main (args=0x7fffffffe0d0) at
/home/astian/src/gdb/gdb-8.0.50.20171029/gdb/main.c:1168
#36 0x00005555555fbe85 in main (argc=<optimized out>, argv=<optimized out>)
at /home/astian/src/gdb/gdb-8.0.50.20171029/gdb/gdb.c:32
(top-gdb)
With "/tmp/rv.gdb" being:
$ cat /tmp/rv.gdb
# Avoid problems with GDB's "record" and call trampolines which
# usually manifests as:
# Process record does not support instruction 0xc5 at address
0x7ffff7be0990.
# Process record: failed to record execution log.
set environment LD_BIND_NOW 1
# Avoid interruptions.
set pagination off
set record full stop-at-limit off
directory ~/src/virt-viewer/virt-viewer-6.0/src
directory ~/src/virt-viewer/spice-gtk-0.34/src
#file /usr/bin/remote-viewer
file ~/src/virt-viewer/virt-viewer-6.0/src/remote-viewer
start spice://localhost:12333
# This was the original reproducer for this bug. To trigger this
# breakpoint, bring remote-viewer's window into focus and press (or
# release) some key.
#
# Function "key_event" (in library "spice-gtk") is a GTK+ widget
# keyboard event handler.
#break key_event
#commands
#echo Recording function...\n
#record
#finish
#end
break virt_viewer_app_on_application_startup
continue
# Uncomment this "next" and you get a different error.
#next
record
next
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>From gdb-prs-return-22054-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 01 14:43:37 2017
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From: "djordje.todorovic@rt-rk.com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug threads/22381] New: GDB can not read TLS from cross-target core
files
Date: Wed, 01 Nov 2017 14:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22381
Bug ID: 22381
Summary: GDB can not read TLS from cross-target core files
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: threads
Assignee: unassigned at sourceware dot org
Reporter: djordje.todorovic@rt-rk.com
Target Milestone: ---
GDB loads native libthread_db that is only good for native debugging.
When GDB is configured to run on Linux x86_64 with MIPS target like this:
# ./configure --target=mips-mti-linux-gnu
and when try to read value of TLS variable from MIPS cross-target core file
this message would be printed out:
(gdb) p tls_variable
Cannot find thread-local storage for LWP 21808, executable file ...
Cannot find thread-local variables on this target
The same problem would occur with all supported cross-target architectures.
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>From gdb-prs-return-22055-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 01 18:08:51 2017
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From: "sourceware_bugzilla at codyps dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/22383] New: fileio pathnames are not NUL terminated
after reading from target memory
Date: Wed, 01 Nov 2017 18:08:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22383
Bug ID: 22383
Summary: fileio pathnames are not NUL terminated after reading
from target memory
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: sourceware_bugzilla at codyps dot com
Target Milestone: ---
Created attachment 10564
--> https://sourceware.org/bugzilla/attachment.cgi?id=10564&action=edit
0001-gdb-remote-fileio-ensure-that-pathname-is-nul-termin.patch
This was noted when using firmware using mbed 5.2's LocalFileSystem to trigger
semihosting calls. openocd (latest) was then used with semihosting and
semihosting_fileio enabled. Gdb was connected to the gdb server provided by
openocd.
The failure is (generally) observed as a failure to open files.
This is due to a few junk bytes after the memory allocated in gdb by alloca()
being treated as part of the path:
Here is some output from gdb with a patch to show open calls:
> FIO: open("ABCDEFG.TXTM�U", 0, 1a4)
The semihosting code is, in this case, trying to open "ABCDEFG.TXT", but has
some extra chaf on the end.
Here is the relevent code from gdb:
/* Request pathname. */
pathname = (char *) alloca (length);
if (target_read_memory (ptrval, (gdb_byte *) pathname, length) != 0)
{
remote_fileio_ioerror ();
return;
}
/* Check if pathname exists and is not a regular file or directory. If so,
return an appropriate error code. Same for trying to open directories
for writing. */
if (!stat (pathname, &st))
Note that it is trusting that `pathname` is null terminated within the length
given in the `Fopen` packet.
I've attached a diff that appears to fix this issue for me.
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>From gdb-prs-return-22056-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 01 19:57:48 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/22383] fileio pathnames are not NUL terminated after
reading from target memory
Date: Wed, 01 Nov 2017 19:57:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Hello,
This patch makes sense to me. Can you please submit it to
<gdb-patches@sourceware.org> with a proper ChangeLog entry (see
<https://sourceware.org/gdb/wiki/ContributionChecklist#ChangeLog>) so that the
maintainers can check and approve it?
Thanks.
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>From gdb-prs-return-22057-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 02 20:42:03 2017
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From: "pcarroll at codesourcery dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22388] New: assertion "xfered_len>0" in target.c for remote
connection
Date: Thu, 02 Nov 2017 20:42:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22388
Bug ID: 22388
Summary: assertion "xfered_len>0" in target.c for remote
connection
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: pcarroll at codesourcery dot com
Target Milestone: ---
We have a customer who is using a Corelis gdb server to connect to gdb.
Occasionally, the gdb server will send a 0-byte block of memory for a read.
When this happens, gdb gives an assertion from target.c:
internal-error: target_xfer_partial: Assertion `*xfered_len > 0' failed.
This problem is almost identical to that fixed in
https://sourceware.org/ml/gdb-patches/2014-02/msg00636.html
In this case, remote.c needs to be modified to return TARGET_XFER_EOF instead
of TARGET_XFER_OK or TARGET_XFER_UNAVAILABLE when 0 bytes are to be
transferred.
The proposed fix would be:
--- fsf/remote.c 2017-11-02 15:21:31.358857300 -0500
+++ fix/remote.c 2017-11-02 15:24:35.536391700 -0500
@@ -8264,7 +8264,7 @@ remote_write_bytes_aux (const char *head
/* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to
send fewer units than we'd planned. */
*xfered_len_units = (ULONGEST) units_written;
- return TARGET_XFER_OK;
+ return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF;
}
/* Write memory data directly to the remote machine.
@@ -8358,7 +8358,7 @@ remote_read_bytes_1 (CORE_ADDR memaddr,
decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size);
/* Return what we have. Let higher layers handle partial reads. */
*xfered_len_units = (ULONGEST) (decoded_bytes / unit_size);
- return TARGET_XFER_OK;
+ return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF;
}
/* Using the set of read-only target sections of remote, read live
@@ -8455,13 +8455,14 @@ remote_read_bytes (struct target_ops *op
res = remote_xfer_live_readonly_partial (ops, myaddr, memaddr,
len, unit_size,
xfered_len);
if (res == TARGET_XFER_OK)
- return TARGET_XFER_OK;
+ return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF;
else
{
/* No use trying further, we know some memory starting
at MEMADDR isn't available. */
*xfered_len = len;
- return TARGET_XFER_UNAVAILABLE;
+ return (*xfered_len != 0) ?
+ TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF;
}
}
@@ -10386,7 +10387,7 @@ remote_write_qxfer (struct target_ops *o
unpack_varlen_hex (rs->buf, &n);
*xfered_len = n;
- return TARGET_XFER_OK;
+ return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF;
}
/* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet.
@@ -10687,7 +10688,7 @@ remote_xfer_partial (struct target_ops *
strcpy ((char *) readbuf, rs->buf);
*xfered_len = strlen ((char *) readbuf);
- return TARGET_XFER_OK;
+ return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF;
}
/* Implementation of to_get_memory_xfer_limit. */
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22388] assertion "xfered_len>0" in target.c for remote
connection
Date: Thu, 02 Nov 2017 20:54:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Thanks for the bug report, Paul.
At a first glance this patch makes sense to me. Could you please send it to
<gdb-patches@sourceware.org>, with a proper ChangeLog entry, so that others can
see and discuss it?
Thanks.
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>From gdb-prs-return-22059-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 02 21:16:51 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/22389] New: aarch64: watchpoints are not merged regression
Date: Thu, 02 Nov 2017 21:16:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22389
Bug ID: 22389
Summary: aarch64: watchpoints are not merged regression
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: tdep
Assignee: unassigned at sourceware dot org
Reporter: jan.kratochvil at redhat dot com
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A tracker only.
As discussed in:
Re: ping#2: [patch] aarch64: PR 19806: watchpoints: false negatives + PR
20207 contiguous ones
https://sourceware.org/ml/gdb-patches/2017-10/msg00878.html
Formerly GDB did merge all watchpoints happening inside an 1/2/4/8 byte aligned
region to 8-byte boundary and then reused the same hardware watchpoint register
as they became the same.
New GDB does not merge them as it can properly prevent false positives (or
formerly false negatives). But then it is now using separate hardware
watchpoint register for each different watchpoint - despite GDB could merge
adjacent watchpoints into a single register (without any false
positives/negatives side effects).
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>From gdb-prs-return-22060-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 02 21:17:42 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/22389] aarch64: watchpoints are not merged regression
Date: Thu, 02 Nov 2017 21:17:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |aarch64-linux
CC| |jan.kratochvil at redhat dot com
Host| |aarch64-linux
Depends on| |19806
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=19806
[Bug 19806] Aarch64: watchpoints set on non-8-byte-aligned addresses are always
missed
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>From gdb-prs-return-22061-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 02 21:17:44 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/19806] Aarch64: watchpoints set on
non-8-byte-aligned addresses are always missed
Date: Thu, 02 Nov 2017 21:17:00 -0000
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |22389
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=22389
[Bug 22389] aarch64: watchpoints are not merged regression
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>From gdb-prs-return-22062-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 03 18:32:26 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18653] spawn changes SIGPIPE SIG_DFL to SIG_IGN
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |---
--- Comment #6 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
I think the fix is incomplete:
- it does fix spawned inferiors
- it does not fix "shell" commands:
grep SigIgn /proc/self/status;./gdb -data-directory data-directory/ -batch -ex
'! grep SigIgn /proc/self/status' -ex start -ex 'call (int)system("grep SigIgn
/proc/self/status")' --args echo
SigIgn: 0000000000000000
SigIgn: 0000000001001000
Temporary breakpoint 1 at 0x1420: file ../src/echo.c, line 109.
Temporary breakpoint 1, main (argc=1, argv=0x7fffffffd768) at ../src/echo.c:109
109 {
SigIgn: 0000000000000000
$1 = 0
A second issue:
https://bugzilla.redhat.com/show_bug.cgi?id=1473411#c2
The all-zeros SigIgn is a bit weak. You really want to make sure that if gdb
starts with something ignored, then the child process ALSO gets started with
that same signal ignored. With working gdb, here's a slightly stronger test:
$ ( trap - BUS; sleep 30& grep SigIgn /proc/$!/status )
SigIgn: 0000000000000006
$ ( trap '' BUS; sleep 30& grep SigIgn /proc/$!/status )
SigIgn: 0000000000000046
Proof that we can control whether 0x40 is ignored during sleep using just the
shell (the shell also ignores SIGINT and SIGQUIT during background tasks;
that's life, hence why I used SIGBUS to show what I'm actually toggling)
$ ( trap '' BUS; gdb --args sleep 30 )
GNU gdb (GDB) Fedora 8.0-13.fc26
...
(gdb) ! grep SigIgn /proc/self/status
SigIgn: 0000000001001040
# So gdb started with SIGBUS ignored, and additionally ignores SIGPIPE
itself...
(gdb) b main
Breakpoint 1 at 0x1590
(gdb) r
Starting program: /usr/bin/sleep 30
Breakpoint 1, 0x0000555555555590 in main ()
(gdb) info thread
Id Target Id Frame
* 1 process 27153 "sleep" 0x0000555555555590 in main ()
(gdb) ! grep SigIgn /proc/27153/status
SigIgn: 0000000000000040
# ...but the child process sees JUST SIGBUS ignored (ie. the exact environment
that we started gdb with, prior to gdb fudging things around)
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>From gdb-prs-return-22063-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 03 19:22:45 2017
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From: "eochgls at web dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/20948] --write option to GDB causes segmentation fault
Date: Fri, 03 Nov 2017 19:22:00 -0000
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Blauhirn <eochgls at web dot de> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |eochgls at web dot de
--- Comment #5 from Blauhirn <eochgls at web dot de> ---
For the real desperate like me, here is a bash workaround.
gdb_write() {
local x=$(mktemp)
echo "set prompt (gdb-wrapper)
handle SIGINT noprint pass
break bfd_close
commands
return (int) 1
continue
end
run -q --write $@
quit" >|$x
gdb -q gdb -x $x
rm $x
}
Call like `gdb_write myprogram`.
This makes gdb ignore the code inside `bfd_close`. I have no idea what damage
this might inflict, but the `--write` option does its job this way.
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>From gdb-prs-return-22064-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Nov 04 00:41:12 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug compile/22395] New: ./configure picks up wrong compiler
Date: Sat, 04 Nov 2017 00:41:00 -0000
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Bug ID: 22395
Summary: ./configure picks up wrong compiler
Product: gdb
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Upon building gdb with -flto I'm getting dozens of errors like:
nat/linux-btrace.h:85:8: warning: type ‘struct btrace_target_info’
violates the C++ One Definition Rule [-Wodr]
struct btrace_target_info
^
remote.c:13157:8: note: a different type is defined in another
translation unit
struct btrace_target_info
^
nat/linux-btrace.h:102:5: note: the first difference of corresponding
definitions is field ‘variant’
} variant;
^
remote.c:13157:8: note: a type with different number of fields is
defined in another translation unit
struct btrace_target_info
^
I didn't dig through all of them, but the primary reason seems to be that
build-toolchain picks up "g++" as the compiler, whereas the gdb source code
does not have .cpp files.
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>From gdb-prs-return-22065-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Nov 05 14:22:24 2017
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From: "mark at klomp dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22399] New: No support for DW_OP_GNU_variable_value
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Bug ID: 22399
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Take the testcase/reproducer from gcc bug
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77589 and compile with GNU Fortran
(GCC) 7.2.1
Breakpoint 1, repro () at dwarf-stridex.f90:14
14 print *, c40pt ! break-here
(gdb) p c40pt(2)
Unhandled dwarf expression opcode 0xfd
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>From gdb-prs-return-22066-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 03:59:48 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22400] New: Do not mention mailing list
Date: Mon, 06 Nov 2017 03:59:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22400
Bug ID: 22400
Summary: Do not mention mailing list
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jidanni at jidanni dot org
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On (info "(gdb) Bug Reporting") do not mention the mailing list.
Also on http://www.gnu.org/software/gdb/bugs/ do not mention the mailing list.
If one sends to the mailing list one will just get bounces.
If one looks at the archives, they are all spam anyway.
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>From gdb-prs-return-22067-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 04:05:14 2017
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From: "jidanni at jidanni dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22401] New: better pager prompt
Date: Mon, 06 Nov 2017 04:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22401
Bug ID: 22401
Summary: better pager prompt
Product: gdb
Version: 8.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jidanni at jidanni dot org
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The prompt
---Type <return> to continue, or q <return> to quit---
is nice, however the user might also want at some point, after reading
several pages, to instead just print out all the remaining pages without
having to hit RET after each one.
Therefore please make it
---Type <return> to continue, a or q <return> to print all or quit---
Also the user should be shown what page he is on:
--- 1/26 Type <return> to continue, a or q <return> to print all or quit---
Sure, on (info "(gdb) Screen Size") one can do set pagination off, but I
am just talking about a user who is already on the fifth page, and wants
to dump all the rest to STDOUT right now.
Also I am not asking you for how to do it. I am asking to change the
prompt, and add a "a" command. Or a "?" to show all options.
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>From gdb-prs-return-22068-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 10:34:59 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug compile/22395] ODR violations
Date: Mon, 06 Nov 2017 10:34:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
Summary|./configure picks up wrong |ODR violations
|compiler |
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Actually, GDB _is_ a C++ program nowadays [1]. The ODR violations should be
fixed.
[1] - https://sourceware.org/gdb/wiki/cxx-conversion
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>From gdb-prs-return-22069-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 11:38:53 2017
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Subject: [Bug build/22102] 32-bit gdb build fails with undefined reference to
amd64_create_target_description
Date: Mon, 06 Nov 2017 11:38:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
Target Milestone|--- |8.1
--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
Fixed.
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>From gdb-prs-return-22070-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 17:08:28 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22404] New: read after free in dwarf2read.c
Date: Mon, 06 Nov 2017 17:08:00 -0000
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Bug ID: 22404
Summary: read after free in dwarf2read.c
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
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$ valgrind ./gdb
./testsuite/outputs/gdb.dwarf2/dw2-bad-parameter-type/dw2-bad-parameter-type
(gdb) ptype f
==5804== Invalid read of size 1
==5804== at 0x57696E: ~process_die_scope (dwarf2read.c:8537)
==5804== by 0x57696E: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8559)
==5804== by 0x575F48: read_file_scope (dwarf2read.c:9539)
==5804== by 0x575F48: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8567)
==5804== by 0x5784BF: process_full_comp_unit (dwarf2read.c:8337)
==5804== by 0x5784BF: process_queue (dwarf2read.c:7828)
==5804== by 0x5784BF: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2931)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804== by 0x6474B5: lookup_symbol(char const*, block const*,
domain_enum_tag, field_of_this_result*) (symtab.c:1831)
==5804== by 0x4B12BC: classify_name(parser_state*, block const*, int)
(c-exp.y:2892)
==5804== by 0x4B3B39: c_yylex (c-exp.y:3092)
==5804== by 0x4B3B39: c_yyparse() (c-exp.c:1903)
==5804== Address 0x62a1233 is 291 bytes inside a block of size 4,064 free'd
==5804== at 0x4C2EDEB: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x777B43: _obstack_free (obstack.c:280)
==5804== by 0x556BCA: free_heap_comp_unit(void*) (dwarf2read.c:22844)
==5804== by 0x556C66: free_one_cached_comp_unit(dwarf2_per_cu_data*)
(dwarf2read.c:22929)
==5804== by 0x556CBF: dwarf2_release_queue(void*) (dwarf2read.c:7865)
==5804== by 0x523445: do_my_cleanups(cleanup**, cleanup*) (cleanups.c:154)
==5804== by 0x528A6D: throw_exception_cxx(gdb_exception)
(common-exceptions.c:289)
==5804== by 0x528B54: throw_exception (common-exceptions.c:317)
==5804== by 0x528B54: throw_it(return_reason, errors, char const*,
__va_list_tag*) (common-exceptions.c:373)
==5804== by 0x528D95: throw_verror(errors, char const*, __va_list_tag*)
(common-exceptions.c:379)
==5804== by 0x673EC3: verror(char const*, __va_list_tag*) (utils.c:249)
==5804== by 0x57DAA8: error(char const*, ...) (errors.c:43)
==5804== by 0x567365: follow_die_ref(die_info*, attribute const*,
dwarf2_cu**) [clone .isra.251] (dwarf2read.c:20728)
==5804== Block was alloc'd at
==5804== at 0x4C2DB8F: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x528FB7: xmalloc (common-utils.c:44)
==5804== by 0x777907: _obstack_begin_worker (obstack.c:141)
==5804== by 0x5669FF: init_cutu_and_read_dies(dwarf2_per_cu_data*,
abbrev_table*, int, int, void (*)(die_reader_specs const*, unsigned char
const*, die_info*, int, void*), void*) (dwarf2read.c:5733)
==5804== by 0x567119: load_full_comp_unit(dwarf2_per_cu_data*, language)
(dwarf2read.c:7991)
==5804== by 0x569761: load_cu(dwarf2_per_cu_data*) (dwarf2read.c:2889)
==5804== by 0x578383: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2916)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804==
==5804== Invalid read of size 8
==5804== at 0x576973: ~process_die_scope (dwarf2read.c:8541)
==5804== by 0x576973: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8559)
==5804== by 0x575F48: read_file_scope (dwarf2read.c:9539)
==5804== by 0x575F48: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8567)
==5804== by 0x5784BF: process_full_comp_unit (dwarf2read.c:8337)
==5804== by 0x5784BF: process_queue (dwarf2read.c:7828)
==5804== by 0x5784BF: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2931)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804== by 0x6474B5: lookup_symbol(char const*, block const*,
domain_enum_tag, field_of_this_result*) (symtab.c:1831)
==5804== by 0x4B12BC: classify_name(parser_state*, block const*, int)
(c-exp.y:2892)
==5804== by 0x4B3B39: c_yylex (c-exp.y:3092)
==5804== by 0x4B3B39: c_yyparse() (c-exp.c:1903)
==5804== Address 0x62a1090 is 256 bytes inside a block of size 312 free'd
==5804== at 0x4C2EDEB: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x556C66: free_one_cached_comp_unit(dwarf2_per_cu_data*)
(dwarf2read.c:22929)
==5804== by 0x556CBF: dwarf2_release_queue(void*) (dwarf2read.c:7865)
==5804== by 0x523445: do_my_cleanups(cleanup**, cleanup*) (cleanups.c:154)
==5804== by 0x528A6D: throw_exception_cxx(gdb_exception)
(common-exceptions.c:289)
==5804== by 0x528B54: throw_exception (common-exceptions.c:317)
==5804== by 0x528B54: throw_it(return_reason, errors, char const*,
__va_list_tag*) (common-exceptions.c:373)
==5804== by 0x528D95: throw_verror(errors, char const*, __va_list_tag*)
(common-exceptions.c:379)
==5804== by 0x673EC3: verror(char const*, __va_list_tag*) (utils.c:249)
==5804== by 0x57DAA8: error(char const*, ...) (errors.c:43)
==5804== by 0x567365: follow_die_ref(die_info*, attribute const*,
dwarf2_cu**) [clone .isra.251] (dwarf2read.c:20728)
==5804== by 0x56D738: lookup_die_type(die_info*, attribute const*,
dwarf2_cu*) (dwarf2read.c:19743)
==5804== by 0x56CF19: read_subroutine_type (dwarf2read.c:15083)
==5804== by 0x56CF19: read_type_die_1 (dwarf2read.c:19802)
==5804== by 0x56CF19: read_type_die(die_info*, dwarf2_cu*)
(dwarf2read.c:19777)
==5804== Block was alloc'd at
==5804== at 0x4C2DB8F: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x528FB7: xmalloc (common-utils.c:44)
==5804== by 0x5669F1: init_cutu_and_read_dies(dwarf2_per_cu_data*,
abbrev_table*, int, int, void (*)(die_reader_specs const*, unsigned char
const*, die_info*, int, void*), void*) (dwarf2read.c:5732)
==5804== by 0x567119: load_full_comp_unit(dwarf2_per_cu_data*, language)
(dwarf2read.c:7991)
==5804== by 0x569761: load_cu(dwarf2_per_cu_data*) (dwarf2read.c:2889)
==5804== by 0x578383: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2916)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804==
==5804== Invalid read of size 1
==5804== at 0x57696E: ~process_die_scope (dwarf2read.c:8537)
==5804== by 0x57696E: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8559)
==5804== by 0x5784BF: process_full_comp_unit (dwarf2read.c:8337)
==5804== by 0x5784BF: process_queue (dwarf2read.c:7828)
==5804== by 0x5784BF: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2931)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804== by 0x6474B5: lookup_symbol(char const*, block const*,
domain_enum_tag, field_of_this_result*) (symtab.c:1831)
==5804== by 0x4B12BC: classify_name(parser_state*, block const*, int)
(c-exp.y:2892)
==5804== by 0x4B3B39: c_yylex (c-exp.y:3092)
==5804== by 0x4B3B39: c_yyparse() (c-exp.c:1903)
==5804== by 0x4B6A52: c_parse(parser_state*) (c-exp.y:3264)
==5804== Address 0x62a1123 is 19 bytes inside a block of size 4,064 free'd
==5804== at 0x4C2EDEB: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x777B43: _obstack_free (obstack.c:280)
==5804== by 0x556BCA: free_heap_comp_unit(void*) (dwarf2read.c:22844)
==5804== by 0x556C66: free_one_cached_comp_unit(dwarf2_per_cu_data*)
(dwarf2read.c:22929)
==5804== by 0x556CBF: dwarf2_release_queue(void*) (dwarf2read.c:7865)
==5804== by 0x523445: do_my_cleanups(cleanup**, cleanup*) (cleanups.c:154)
==5804== by 0x528A6D: throw_exception_cxx(gdb_exception)
(common-exceptions.c:289)
==5804== by 0x528B54: throw_exception (common-exceptions.c:317)
==5804== by 0x528B54: throw_it(return_reason, errors, char const*,
__va_list_tag*) (common-exceptions.c:373)
==5804== by 0x528D95: throw_verror(errors, char const*, __va_list_tag*)
(common-exceptions.c:379)
==5804== by 0x673EC3: verror(char const*, __va_list_tag*) (utils.c:249)
==5804== by 0x57DAA8: error(char const*, ...) (errors.c:43)
==5804== by 0x567365: follow_die_ref(die_info*, attribute const*,
dwarf2_cu**) [clone .isra.251] (dwarf2read.c:20728)
==5804== Block was alloc'd at
==5804== at 0x4C2DB8F: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x528FB7: xmalloc (common-utils.c:44)
==5804== by 0x777907: _obstack_begin_worker (obstack.c:141)
==5804== by 0x5669FF: init_cutu_and_read_dies(dwarf2_per_cu_data*,
abbrev_table*, int, int, void (*)(die_reader_specs const*, unsigned char
const*, die_info*, int, void*), void*) (dwarf2read.c:5733)
==5804== by 0x567119: load_full_comp_unit(dwarf2_per_cu_data*, language)
(dwarf2read.c:7991)
==5804== by 0x569761: load_cu(dwarf2_per_cu_data*) (dwarf2read.c:2889)
==5804== by 0x578383: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2916)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804==
==5804== Invalid read of size 8
==5804== at 0x576973: ~process_die_scope (dwarf2read.c:8541)
==5804== by 0x576973: process_die(die_info*, dwarf2_cu*) (dwarf2read.c:8559)
==5804== by 0x5784BF: process_full_comp_unit (dwarf2read.c:8337)
==5804== by 0x5784BF: process_queue (dwarf2read.c:7828)
==5804== by 0x5784BF: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2931)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804== by 0x6474B5: lookup_symbol(char const*, block const*,
domain_enum_tag, field_of_this_result*) (symtab.c:1831)
==5804== by 0x4B12BC: classify_name(parser_state*, block const*, int)
(c-exp.y:2892)
==5804== by 0x4B3B39: c_yylex (c-exp.y:3092)
==5804== by 0x4B3B39: c_yyparse() (c-exp.c:1903)
==5804== by 0x4B6A52: c_parse(parser_state*) (c-exp.y:3264)
==5804== Address 0x62a1090 is 256 bytes inside a block of size 312 free'd
==5804== at 0x4C2EDEB: free (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x556C66: free_one_cached_comp_unit(dwarf2_per_cu_data*)
(dwarf2read.c:22929)
==5804== by 0x556CBF: dwarf2_release_queue(void*) (dwarf2read.c:7865)
==5804== by 0x523445: do_my_cleanups(cleanup**, cleanup*) (cleanups.c:154)
==5804== by 0x528A6D: throw_exception_cxx(gdb_exception)
(common-exceptions.c:289)
==5804== by 0x528B54: throw_exception (common-exceptions.c:317)
==5804== by 0x528B54: throw_it(return_reason, errors, char const*,
__va_list_tag*) (common-exceptions.c:373)
==5804== by 0x528D95: throw_verror(errors, char const*, __va_list_tag*)
(common-exceptions.c:379)
==5804== by 0x673EC3: verror(char const*, __va_list_tag*) (utils.c:249)
==5804== by 0x57DAA8: error(char const*, ...) (errors.c:43)
==5804== by 0x567365: follow_die_ref(die_info*, attribute const*,
dwarf2_cu**) [clone .isra.251] (dwarf2read.c:20728)
==5804== by 0x56D738: lookup_die_type(die_info*, attribute const*,
dwarf2_cu*) (dwarf2read.c:19743)
==5804== by 0x56CF19: read_subroutine_type (dwarf2read.c:15083)
==5804== by 0x56CF19: read_type_die_1 (dwarf2read.c:19802)
==5804== by 0x56CF19: read_type_die(die_info*, dwarf2_cu*)
(dwarf2read.c:19777)
==5804== Block was alloc'd at
==5804== at 0x4C2DB8F: malloc (in
/usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==5804== by 0x528FB7: xmalloc (common-utils.c:44)
==5804== by 0x5669F1: init_cutu_and_read_dies(dwarf2_per_cu_data*,
abbrev_table*, int, int, void (*)(die_reader_specs const*, unsigned char
const*, die_info*, int, void*), void*) (dwarf2read.c:5732)
==5804== by 0x567119: load_full_comp_unit(dwarf2_per_cu_data*, language)
(dwarf2read.c:7991)
==5804== by 0x569761: load_cu(dwarf2_per_cu_data*) (dwarf2read.c:2889)
==5804== by 0x578383: dw2_do_instantiate_symtab(dwarf2_per_cu_data*)
(dwarf2read.c:2916)
==5804== by 0x579665: dwarf2_read_symtab(partial_symtab*, objfile*)
(dwarf2read.c:7694)
==5804== by 0x60A816: psymtab_to_symtab(objfile*, partial_symtab*)
(psymtab.c:768)
==5804== by 0x60CF20: psym_lookup_symbol(objfile*, int, char const*,
domain_enum_tag) (psymtab.c:519)
==5804== by 0x64670B: lookup_symbol_via_quick_fns (symtab.c:2299)
==5804== by 0x64670B: lookup_symbol_in_objfile(objfile*, int, char const*,
domain_enum_tag) (symtab.c:2471)
==5804== by 0x647049: lookup_static_symbol(char const*, domain_enum_tag)
(symtab.c:2508)
==5804== by 0x647423: lookup_symbol_aux (symtab.c:2024)
==5804== by 0x647423: lookup_symbol_in_language(char const*, block const*,
domain_enum_tag, language, field_of_this_result*) (symtab.c:1819)
==5804==
Dwarf Error: Cannot find DIE at 0x0 referenced from DIE at 0x29 [in module
/home/yao.qi/SourceCode/gnu/build-without-python-guile/gdb/testsuite/outputs/gdb.dwarf2/dw2-bad-parameter-type/dw2-bad-parameter-type]
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22223] python event.new_thread does not exist but
described in online document
Date: Mon, 06 Nov 2017 17:57:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |tromey at sourceware dot org
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
The online document is generated from the gdb tree.
You probably have an older gdb, and this functionality
was added after the version you have was released.
So, I don't think there is a bug here.
Normally most linux distros, and "make install", will install
the info form of the gdb manual. So for the most consistent
results, you should consult the manual that you have.
The web page says that the latest release's manual is online,
but I see that the links are wrong...
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Subject: [Bug python/22195] Provide a help() method to gdb.Command that
overrides the docstring
Date: Mon, 06 Nov 2017 17:58:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-11-06
CC| |tromey at sourceware dot org
Ever confirmed|0 |1
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Seems reasonable to me.
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To: gdb-prs@sourceware.org
Subject: [Bug corefiles/18964] [mips] 7.10.1 regression: internal-error:
mips-tdep.c:1098: bad register size
Date: Mon, 06 Nov 2017 18:31:00 -0000
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----------------------------------------------------------------------------
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>From gdb-prs-return-22074-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 18:32:15 2017
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Subject: [Bug corefiles/18964] [mips] 7.10.1 regression: internal-error:
mips-tdep.c:1098: bad register size
Date: Mon, 06 Nov 2017 18:32:00 -0000
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--- Comment #11 from Luis Machado <luis.machado at linaro dot org> ---
No longer working on it.
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From: "luis.machado at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/20926] gdb misses breakpoint and stops one line
after
Date: Mon, 06 Nov 2017 18:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20926
--- Comment #2 from Luis Machado <luis.machado at linaro dot org> ---
No longer working on it.
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>From gdb-prs-return-22075-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 06 18:32:22 2017
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From: "luis.machado at linaro dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/20926] gdb misses breakpoint and stops one line
after
Date: Mon, 06 Nov 2017 18:32:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=20926
Luis Machado <luis.machado at linaro dot org> changed:
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>From gdb-prs-return-22077-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 07 21:48:32 2017
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Subject: [Bug corefiles/8210] Linux core files should use linux-thread-db.c
Date: Tue, 07 Nov 2017 21:48:00 -0000
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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--- Comment #8 from Maciej W. Rozycki <macro@linux-mips.org> ---
And the cross debug case is now PR threads/22381.
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>From gdb-prs-return-22078-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 07 21:50:16 2017
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Subject: [Bug threads/22381] GDB can not read TLS from cross-target core
files
Date: Tue, 07 Nov 2017 21:50:00 -0000
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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--- Comment #1 from Maciej W. Rozycki <macro@linux-mips.org> ---
See also:
<https://sourceware.org/ml/gdb/2017-05/msg00012.html>
<https://sourceware.org/ml/gdb/2017-06/msg00000.html>
<https://sourceware.org/ml/gdb-patches/2017-06/msg00102.html>
(and PR corefiles/8210).
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>From gdb-prs-return-22079-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 08 08:20:32 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22407] New: gdb crash in jit.c
Date: Wed, 08 Nov 2017 08:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22407
Bug ID: 22407
Summary: gdb crash in jit.c
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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I ran gdb on a process tree using these settings:
set detach-on-fork off
set non-stop on
set pagination off
set schedule-multiple on
Eventually gdb crashed:
../../gdb/breakpoint.c:13853: internal-error: void
delete_breakpoint(breakpoint*): Assertion `bpt != NULL' failed.
This call comes from jit.c:free_objfile_data:
if (ps_data != NULL && ps_data->objfile == objfile)
{
ps_data->objfile = NULL;
delete_breakpoint (ps_data->jit_breakpoint);
ps_data->cached_code_address = 0;
}
Changing this to check that ps_data->jit_breakpoint != NULL worked for me.
However I don't have time to write a test, so I'm sending a bug report instead.
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>From gdb-prs-return-22080-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 08 16:01:24 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/22411] New: cp-name-parser.y doesn't grok templates with
function type as template argument
Date: Wed, 08 Nov 2017 16:01:00 -0000
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Bug ID: 22411
Summary: cp-name-parser.y doesn't grok templates with function
type as template argument
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: c++
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I noticed that gdb/cp-name-parser.y:cp_demangled_name_to_comp fails to grok
this:
"A::foo<void (int)>::func(int)"
which is a valid symbol name that can result from something like this:
~~~
#include <stdio.h>
namespace A
{
template<typename T>
struct foo
{
void func (int)
{
printf ("hello");
}
};
}
A::foo<void(int)> f1; // bad cases instantiated from this one here
A::foo<int> f2;
int
main (int argc, char **argv)
{
f1.func (argc);
f2.func (argc);
return 0;
}
~~~
$ nm a.out | c++filt | grep func
000000000040062a W A::foo<void (int)>::func(int)
000000000040064c W A::foo<int>::func(int)
Running the symbol through test-cp-name-parser, we see:
$ ./test-cp-name-parser 'A::foo<void (int)>::func(int)'
syntax error, near `int)>::func(int)'
While the non-function-type one works OK:
$ ./test-cp-name-parser 'A::foo<int>::func(int)'
A::foo<int>::func(int)
A smaller reproducer:
$ ./test-cp-name-parser 'foo<void(void)>'
syntax error, near `void)>'
Function pointer types work OK:
$ ./test-cp-name-parser 'foo<void (*) (void)>'
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>From gdb-prs-return-22081-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 08 22:17:03 2017
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18003] Some fails in gdb.base/breakpoint-in-ro-region.exp
Date: Wed, 08 Nov 2017 22:17:00 -0000
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weimin.pan at oracle dot com changed:
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CC| |weimin.pan at oracle dot com
--- Comment #1 from weimin.pan at oracle dot com ---
The test case is now passing with the upstream gdb:
% make check TESTS="gdb.base/breakpoint-in-ro-region.exp"
...
...
=== gdb Summary ===
# of expected passes 40
/home/wepan/binutils-gdb/gdb/testsuite/../../gdb/gdb version
8.0.50.20170915-git -nw -nx -data-directory
/home/wepan/binutils-gdb/gdb/testsuite/../data-directory
make[2]: Leaving directory '/home/wepan/binutils-gdb/gdb/testsuite'
make[1]: Leaving directory '/home/wepan/binutils-gdb/gdb/testsuite'
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>From gdb-prs-return-22082-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 08 22:22:23 2017
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/16200] Running an inferior with incompatible architecture
lead to crash
Date: Wed, 08 Nov 2017 22:22:00 -0000
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weimin.pan at oracle dot com changed:
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--- Comment #1 from weimin.pan at oracle dot com ---
The crash problem is not reproducible with the upstream gdb:
% gdb -batch -ex 'set architecture mips' -ex run /bin/ls
Undefined item: "mips".
bin tests
[Inferior 1 (process 32096) exited normally]
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>From gdb-prs-return-22083-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 10 14:44:00 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22417] New: Get garbage data when reading .interp section
Date: Fri, 10 Nov 2017 14:43:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22417
Bug ID: 22417
Summary: Get garbage data when reading .interp section
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: qiyao at gcc dot gnu.org
Target Milestone: ---
Build GDB with asan.
start GDBserver,
$ ./gdbserver/gdbserver :1234
./testsuite/outputs/gdb.base/catch-syscall/catch-syscall
start GDB,
$ ./gdb -data-directory=$PWD/data-directory -ex "b main" -ex "target remote
:1234" -ex "c" -ex "catch syscall execve" -ex "set do_execve = 1" -ex "c" -ex
"c" -ex "c" -ex "c" ./testsuite/outputs/gdb.base/catch-syscall/catch-syscall
...
...
Breakpoint 1, main (argc=1, argv=0x7fffffffe3d8)
at
/home/yao.qi/SourceCode/gnu/build-with-asan/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.base/catch-syscall.c:47
47 {
Continuing.
[Inferior 1 (process 22322) exited normally]
start GDBserver again, and type command in GDB again,
(gdb) target remote :1234
`target:/home/yao.qi/SourceCode/gnu/build-with-asan/gdb/testsuite/outputs/gdb.base/catch-syscall/catch-syscall'
has disappeared; keeping its symbols.
Remote debugging using :1234
=================================================================
==22332==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60300004a4ec at pc 0x7f2be286820b bp 0x7fff37d48e40 sp 0x7fff37d485e8
READ of size 29 at 0x60300004a4ec thread T0
#0 0x7f2be286820a in __interceptor_strlen
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x7020a)
#1 0xf6745d in xstrdup ../../binutils-gdb/libiberty/xstrdup.c:33
#2 0xb71293 in solib_find_1 ../../binutils-gdb/gdb/solib.c:218
#3 0xb7214f in solib_find(char const*, int*)
../../binutils-gdb/gdb/solib.c:462
#4 0xb72391 in solib_bfd_open(char*) ../../binutils-gdb/gdb/solib.c:503
#5 0x46352c in enable_break ../../binutils-gdb/gdb/solib-svr4.c:2336
#6 0x466a3c in svr4_solib_create_inferior_hook
../../binutils-gdb/gdb/solib-svr4.c:3059
#7 0xb75a71 in solib_create_inferior_hook(int)
../../binutils-gdb/gdb/solib.c:1232
#8 0xa0e8f9 in post_create_inferior(target_ops*, int)
../../binutils-gdb/gdb/infcmd.c:492
#9 0xa28c17 in start_remote(int) ../../binutils-gdb/gdb/infrun.c:3241
#10 0x4ea1b8 in remote_start_remote ../../binutils-gdb/gdb/remote.c:4287
#11 0x4eceef in remote_open_1 ../../binutils-gdb/gdb/remote.c:5144
#12 0x4ea5ff in remote_open ../../binutils-gdb/gdb/remote.c:4382
#13 0xc0ede1 in open_target ../../binutils-gdb/gdb/target.c:358
#14 0x5560e6 in do_sfunc ../../binutils-gdb/gdb/cli/cli-decode.c:138
#15 0x55d6f4 in cmd_func(cmd_list_element*, char*, int)
../../binutils-gdb/gdb/cli/cli-decode.c:1952
#16 0xc42804 in execute_command(char*, int)
../../binutils-gdb/gdb/top.c:608
#17 0x978192 in command_handler(char*)
../../binutils-gdb/gdb/event-top.c:583
#18 0x978a00 in command_line_handler(char*)
../../binutils-gdb/gdb/event-top.c:773
#19 0x97700a in gdb_rl_callback_handler
../../binutils-gdb/gdb/event-top.c:213
#20 0xce9782 in rl_callback_read_char
../../binutils-gdb/readline/callback.c:220
#21 0x976cb7 in gdb_rl_callback_read_char_wrapper_noexcept
../../binutils-gdb/gdb/event-top.c:175
#22 0x976e3b in gdb_rl_callback_read_char_wrapper
../../binutils-gdb/gdb/event-top.c:192
#23 0x977d43 in stdin_event_handler(int, void*)
../../binutils-gdb/gdb/event-top.c:511
#24 0x9741fa in handle_file_event ../../binutils-gdb/gdb/event-loop.c:733
#25 0x974a6c in gdb_wait_for_event ../../binutils-gdb/gdb/event-loop.c:859
#26 0x9728ed in gdb_do_one_event() ../../binutils-gdb/gdb/event-loop.c:347
#27 0x9729b5 in start_event_loop() ../../binutils-gdb/gdb/event-loop.c:371
#28 0xa885b5 in captured_command_loop ../../binutils-gdb/gdb/main.c:329
#29 0xa8af58 in captured_main ../../binutils-gdb/gdb/main.c:1152
#30 0xa8b0d5 in gdb_main(captured_main_args*)
../../binutils-gdb/gdb/main.c:1168
#31 0x40fb88 in main ../../binutils-gdb/gdb/gdb.c:32
#32 0x7f2be0b7882f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#33 0x40f9e8 in _start
(/home/yao.qi/SourceCode/gnu/build-with-asan/gdb/gdb+0x40f9e8)
0x60300004a4ec is located 0 bytes to the right of 28-byte region
[0x60300004a4d0,0x60300004a4ec)
allocated by thread T0 here:
#0 0x7f2be2890602 in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x83a171 in xmalloc ../../binutils-gdb/gdb/common/common-utils.c:44
#2 0x45c948 in find_program_interpreter
../../binutils-gdb/gdb/solib-svr4.c:587
#3 0x4634b9 in enable_break ../../binutils-gdb/gdb/solib-svr4.c:2313
#4 0x466a3c in svr4_solib_create_inferior_hook
../../binutils-gdb/gdb/solib-svr4.c:3059
#5 0xb75a71 in solib_create_inferior_hook(int)
../../binutils-gdb/gdb/solib.c:1232
#6 0xa0e8f9 in post_create_inferior(target_ops*, int)
../../binutils-gdb/gdb/infcmd.c:492
#7 0xa28c17 in start_remote(int) ../../binutils-gdb/gdb/infrun.c:3241
#8 0x4ea1b8 in remote_start_remote ../../binutils-gdb/gdb/remote.c:4287
#9 0x4eceef in remote_open_1 ../../binutils-gdb/gdb/remote.c:5144
#10 0x4ea5ff in remote_open ../../binutils-gdb/gdb/remote.c:4382
#11 0xc0ede1 in open_target ../../binutils-gdb/gdb/target.c:358
#12 0x5560e6 in do_sfunc ../../binutils-gdb/gdb/cli/cli-decode.c:138
#13 0x55d6f4 in cmd_func(cmd_list_element*, char*, int)
../../binutils-gdb/gdb/cli/cli-decode.c:1952
#14 0xc42804 in execute_command(char*, int)
../../binutils-gdb/gdb/top.c:608
#15 0x978192 in command_handler(char*)
../../binutils-gdb/gdb/event-top.c:583
#16 0x978a00 in command_line_handler(char*)
../../binutils-gdb/gdb/event-top.c:773
#17 0x97700a in gdb_rl_callback_handler
../../binutils-gdb/gdb/event-top.c:213
#18 0xce9782 in rl_callback_read_char
../../binutils-gdb/readline/callback.c:220
#19 0x976e3b in gdb_rl_callback_read_char_wrapper
../../binutils-gdb/gdb/event-top.c:192
#20 0x977d43 in stdin_event_handler(int, void*)
../../binutils-gdb/gdb/event-top.c:511
#21 0x9741fa in handle_file_event ../../binutils-gdb/gdb/event-loop.c:733
#22 0x974a6c in gdb_wait_for_event ../../binutils-gdb/gdb/event-loop.c:859
#23 0x9728ed in gdb_do_one_event() ../../binutils-gdb/gdb/event-loop.c:347
#24 0x9729b5 in start_event_loop() ../../binutils-gdb/gdb/event-loop.c:371
#25 0xa885b5 in captured_command_loop ../../binutils-gdb/gdb/main.c:329
#26 0xa8af58 in captured_main ../../binutils-gdb/gdb/main.c:1152
#27 0xa8b0d5 in gdb_main(captured_main_args*)
../../binutils-gdb/gdb/main.c:1168
#28 0x40fb88 in main ../../binutils-gdb/gdb/gdb.c:32
#29 0x7f2be0b7882f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
-------------------------------------
I debug gdb a little bit, set breakpoint on find_program_interpreter, and looks
it returns garbage data, because abfd->iovec is not correctly set,
196 nread = abfd->iovec->bread (abfd, ptr, size);
(gdb) p abfd->iovec
$3 = (const struct bfd_iovec *) 0x13d9240 <opncls_iovec>
(gdb) p abfd
$4 = (bfd *) 0x612000031e40
(gdb) p *abfd
$5 = {filename = 0x60b00003ca50
"target:/home/yao.qi/SourceCode/gnu/build-with-asan/gdb/testsuite/outputs/gdb.base/catch-syscall/catch-syscall",
xvec = 0x13e3080 <x86_64_elf64_vec>, iostream = 0x62100042cd10, iovec =
0x13d9240 <opncls_iovec>, lru_prev = 0x0, lru_next = 0x0, where = 568,
mtime = 1510322635, id = 9, format = bfd_object, direction = read_direction,
flags = 33042, cacheable = 0, target_defaulted = 1, opened_once = 0,
mtime_set = 0, no_export = 0, output_has_begun = 0, has_armap = 0,
is_thin_archive = 0, selective_search = 0, is_linker_output = 0,
is_linker_input = 0,
plugin_format = bfd_plugin_unknown, lto_output = 0, plugin_dummy_bfd = 0x0,
origin = 0, proxy_origin = 0, section_htab = {table = 0x621000444910,
newfunc = 0xd2a6fd <bfd_section_hash_newfunc>, memory = 0x603000038c50,
size = 61, count = 32, entsize = 304, frozen = 0}, sections = 0x62100042b990,
section_last = 0x621000445360, section_count = 32, archive_pass = 0,
start_address = 4195952, outsymbols = 0x0, symcount = 0, dynsymcount = 0,
arch_info = 0x14163c0 <bfd_x86_64_arch>, arelt_data = 0x0, my_archive = 0x0,
archive_next = 0x0, archive_head = 0x0, nested_archives = 0x0, link = {
next = 0x0, hash = 0x0}, tdata = {aout_data = 0x62100042cd38, aout_ar_data
= 0x62100042cd38, oasys_obj_data = 0x62100042cd38,
oasys_ar_data = 0x62100042cd38, coff_obj_data = 0x62100042cd38, pe_obj_data
= 0x62100042cd38, xcoff_obj_data = 0x62100042cd38, ecoff_obj_data =
0x62100042cd38, ieee_data = 0x62100042cd38, ieee_ar_data = 0x62100042cd38,
srec_data = 0x62100042cd38, verilog_data = 0x62100042cd38,
ihex_data = 0x62100042cd38, tekhex_data = 0x62100042cd38, elf_obj_data =
0x62100042cd38, nlm_obj_data = 0x62100042cd38, bout_data = 0x62100042cd38,
mmo_data = 0x62100042cd38, sun_core_data = 0x62100042cd38, sco5_core_data =
0x62100042cd38, trad_core_data = 0x62100042cd38, som_data = 0x62100042cd38,
hpux_core_data = 0x62100042cd38, hppabsd_core_data = 0x62100042cd38,
sgi_core_data = 0x62100042cd38, lynx_core_data = 0x62100042cd38,
osf_core_data = 0x62100042cd38, cisco_core_data = 0x62100042cd38,
versados_data = 0x62100042cd38, netbsd_core_data = 0x62100042cd38,
mach_o_data = 0x62100042cd38, mach_o_fat_data = 0x62100042cd38, plugin_data
= 0x62100042cd38, pef_data = 0x62100042cd38, pef_xlib_data = 0x62100042cd38,
sym_data = 0x62100042cd38, any = 0x62100042cd38}, usrdata = 0x60b00003c9a0,
memory = 0x603000038c80, build_id = 0x62100042a8d0}
--
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From: "romeo.berlov at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22418] New: libpthread.so.0 error
Date: Fri, 10 Nov 2017 15:15:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22418
Bug ID: 22418
Summary: libpthread.so.0 error
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: romeo.berlov at gmail dot com
Target Milestone: ---
Ubuntu 16
Native stacktrace:
mono() [0x49ff2f]
mono() [0x4f390e]
mono() [0x426c19]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390) [0x7f1678e4a390]
[0x41348ef0]
Debug info from gdb:
[New LWP 8023]
[New LWP 8024]
[New LWP 8029]
[New LWP 8030]
[New LWP 8031]
[New LWP 8032]
[New LWP 8033]
[New LWP 8038]
[New LWP 8041]
[New LWP 8042]
[New LWP 8055]
[New LWP 8058]
[New LWP 8059]
[New LWP 8069]
[New LWP 8074]
[New LWP 8088]
[New LWP 8092]
[New LWP 8139]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f1678e49f7b in __waitpid (pid=8140, stat_loc=0x7f167997928c, options=0)
at ../sysdeps/unix/sysv/linux/waitpid.c:29
29 ../sysdeps/unix/sysv/linux/waitpid.c: Нет такого файла или каталога.
Id Target Id Frame
* 1 Thread 0x7f1679964780 (LWP 8022) "mono" 0x00007f1678e49f7b in __waitpid
(pid=8140, stat_loc=0x7f167997928c, options=0) at
../sysdeps/unix/sysv/linux/waitpid.c:29
2 Thread 0x7f1677fff700 (LWP 8023) "mono" pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
3 Thread 0x7f1675f15700 (LWP 8024) "Finalizer" 0x00007f1678e48827 in
futex_abstimed_wait_cancelable (private=0, abstime=0x0, expected=0,
futex_word=0x956820) at ../sysdeps/unix/sysv/linux/futex-internal.h:205
4 Thread 0x7f16601f5700 (LWP 8029) "mono" 0x00007f1678b6a70d in poll () at
../sysdeps/unix/syscall-template.S:84
5 Thread 0x7f16601b4700 (LWP 8030) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16601b3db0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
6 Thread 0x7f165bfff700 (LWP 8031) "Threadpool work"
pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
7 Thread 0x7f165bdfe700 (LWP 8032) "Threadpool work"
pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
8 Thread 0x7f165a9cf700 (LWP 8033) "Threadpool work"
pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
9 Thread 0x7f1647bff700 (LWP 8038) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f1647bfe8d0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
10 Thread 0x7f16473ff700 (LWP 8041) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16473fe880, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
11 Thread 0x7f16471fe700 (LWP 8042) "Timer-Scheduler"
pthread_cond_timedwait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
12 Thread 0x7f16464fc700 (LWP 8055) "mono" 0x00007f1678b6624d in read () at
../sysdeps/unix/syscall-template.S:84
13 Thread 0x7f16466fd700 (LWP 8058) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16466fc8f0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
14 Thread 0x7f166896c700 (LWP 8059) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f166896b8f0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
15 Thread 0x7f1645aff700 (LWP 8069) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f1645afe6e0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
16 Thread 0x7f16452fb700 (LWP 8074) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16452fa8f0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
17 Thread 0x7f16454fc700 (LWP 8088) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16454fb8f0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
18 Thread 0x7f16468fe700 (LWP 8092) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16468fd7f0, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
19 Thread 0x7f16456fd700 (LWP 8139) "mono" __clock_nanosleep (clock_id=,
flags=1, req=0x7f16456fc810, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
Thread 19 (Thread 0x7f16456fd700 (LWP 8139)):
#0 __clock_nanosleep (clock_id=, flags=1, req=0x7f16456fc810, rem=0x0) at
../sysdeps/unix/sysv/linux/clock_nanosleep.c:48
#1 0x0000000000617160 in ?? ()
#2 0x000000000058743a in ?? ()
#3 0x0000000041e66b92 in ?? ()
#4 0x00007f1664001900 in ?? ()
#5 0x00007f167829f018 in ?? ()
#6 0x00007f167829eeb8 in ?? ()
#7 0x00007f167829ef80 in ?? ()
#8 0x00007f167829eeb8 in ?? ()
#9 0x00007f1664019100 in ?? ()
#10 0x00007f16456fc870 in ?? ()
#11 0x00007f16456fc9d0 in ?? ()
#12 0x00007f16456fc880 in ?? ()
/build/gdb-cXfXJ3/gdb-7.11.1/gdb/dwarf2-frame.c:690: internal-error: Unknown
CFI encountered.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
.
/build/gdb-cXfXJ3/gdb-7.11.1/gdb/dwarf2-frame.c:690: internal-error: Unknown
CFI encountered.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================
--
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>From gdb-prs-return-22085-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Nov 11 04:31:20 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22420] New: gdb.base/dtrace-probe.exp not working (as
in "not able to run")
Date: Sat, 11 Nov 2017 04:31:00 -0000
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attachments.created
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https://sourceware.org/bugzilla/show_bug.cgi?id=22420
Bug ID: 22420
Summary: gdb.base/dtrace-probe.exp not working (as in "not able
to run")
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: testsuite
Assignee: unassigned at sourceware dot org
Reporter: sergiodj at redhat dot com
CC: jose.marchesi at oracle dot com
Target Milestone: ---
Created attachment 10580
--> https://sourceware.org/bugzilla/attachment.cgi?id=10580&action=edit
gdb.log generated when running the test
I've been meaning to file this bug for a while now. Unfortunately
gdb.base/dtrace-probe.exp is not working anymore. I cannot really say when was
the last time it worked, but I remember seeing reports of compilation failures
for quite some time on BuildBot.
I am attaching the gdb.log generated when I run "make check-gdb
TESTS=gdb.base/dtrace-probe.exp" on my x86_64 Fedora 26 machine. I also took
the liberty to add Jose Marchesi to the Cc list, since he is the original
author of the test infrastructure for DTrace probes.
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>From gdb-prs-return-22086-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Nov 12 15:52:15 2017
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From: "zed.three at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug fortran/22424] New: gdb.lookup_type fails for Fortran
Date: Sun, 12 Nov 2017 15:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22424
Bug ID: 22424
Summary: gdb.lookup_type fails for Fortran
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
Assignee: unassigned at sourceware dot org
Reporter: zed.three at gmail dot com
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`gdb.lookup_type` from the Python API doesn't work for Fortran.
In the following Fortran program (compiled with gfortran 7.2.1):
program mvce
implicit none
type :: my_type
integer :: my_int
end type my_type
type(my_type) :: foo
foo%my_int = 4
print*, foo%my_int
end program mvce
gives:
(gdb) py gdb.lookup_type(str(gdb.parse_and_eval("foo").type))
Traceback (most recent call last):
File "<string>", line 1, in <module>
gdb.error: No type named Type my_type.
Error while executing Python code.
Possibly related is that `info types` also doesn't work for Fortran, although
`info types <type>` does:
(gdb) info types
All defined types:
File ../../../gcc/fortran/libgfortran.h:
Language not supported.
(gdb) info types my_type
All types matching regular expression "my_type":
File mvce.f90:
Type my_type;
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>From gdb-prs-return-22087-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 13 13:07:20 2017
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From: "rep.dot.nop at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/22430] New: internal-error in block_symbol
cp_lookup_bare_symbol
Date: Mon, 13 Nov 2017 13:07:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22430
Bug ID: 22430
Summary: internal-error in block_symbol cp_lookup_bare_symbol
Product: gdb
Version: 7.12
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
Reporter: rep.dot.nop at gmail dot com
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$ echo "int main(void){return 0;}" | gcc -g -xc++ - -o /tmp/o
$ gdb -q /tmp/o
Reading symbols from /tmp/o...done.
(gdb) b foo->bar::baz
Function "foo->bar::baz" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (foo->bar::baz) pending.
(gdb) run
Starting program: /tmp/o
/build/gdb-uGdIdO/gdb-7.12/gdb/cp-namespace.c:173: internal-error: block_symbol
cp_lookup_bare_symbol(const language_defn*, const char*, const block*,
domain_enum, int): Assertion `strstr (name, "::") == NULL' failed.
GNU gdb (Debian 7.12-6+b1) 7.12.0.20161007-git
Admittedly resembles "Doctor, it hurts when i.." but maybe could be handled
more gracefully.
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>From gdb-prs-return-22088-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 13 16:26:42 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/16200] Running an inferior with incompatible architecture
lead to crash
Date: Mon, 13 Nov 2017 16:26:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |qiyao at gcc dot gnu.org
Resolution|--- |WORKSFORME
--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
I can't reproduce it either. Close it.
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>From gdb-prs-return-22089-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 14 09:51:28 2017
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To: gdb-prs@sourceware.org
Subject: [Bug remote/7628] re-connect: so target knows that a new session has
been started
Date: Tue, 14 Nov 2017 09:51:00 -0000
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eshaahuja1991 at gmail dot com changed:
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CC| |eshaahuja1991 at gmail dot com
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>From gdb-prs-return-22090-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 14 09:52:48 2017
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From: "eshaahuja1991 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/22435] New: During remote debugging, gdbserver is unable to
connect to gdb client when the debug session is invoked for the second time
Date: Tue, 14 Nov 2017 09:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22435
Bug ID: 22435
Summary: During remote debugging, gdbserver is unable to
connect to gdb client when the debug session is
invoked for the second time
Product: gdb
Version: 7.12.1
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: cli
Assignee: unassigned at sourceware dot org
Reporter: eshaahuja1991 at gmail dot com
Target Milestone: ---
C:\Users\abc>arm-linux-gnueabihf-gdb
GNU gdb (Linaro_GDB-2017.05) 7.12.1.20170417-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-w64-mingw32
--target=arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
(gdb) target extended-remote 192.168.2.2:5000
Remote debugging using 192.168.2.2:5000
(gdb) set detach-on-fork off
(gdb) set follow-fork-mode child
(gdb) attach 12910
Attaching to process 12910
Reading /home/root/myApp from remote target...
warning: File transfers from remote targets can be slow. Use "set sysroot" to
access files locally instead.
Reading /home/root/myApp from remote target...
Reading symbols from target:/home/root/myApp...done.
Reading /lib/libdl.so.2 from remote target...
Reading /usr/lib/libffi.so.6 from remote target...
Reading /lib/libpthread.so.0 from remote target...
Reading /usr/lib/libstdc++.so.6 from remote target...
Reading /lib/libm.so.6 from remote target...
Reading /lib/libgcc_s.so.1 from remote target...
Reading /lib/libc.so.6 from remote target...
Reading /lib/ld-linux-armhf.so.3 from remote target...
Reading symbols from target:/lib/libdl.so.2...Reading /lib/libdl-2.22.so from
remote target...
Reading /lib/.debug/libdl-2.22.so from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/usr/lib/libffi.so.6...Reading
/usr/lib/libffi.so.6.0.4 from remote target...
Reading /usr/lib/.debug/libffi.so.6.0.4 from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/lib/libpthread.so.0...Reading
/lib/libpthread-2.22.so from remote target...
Reading /lib/.debug/libpthread-2.22.so from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/usr/lib/libstdc++.so.6...Reading
/usr/lib/libstdc++.so.6.0.21 from remote target...
Reading /usr/lib/.debug/libstdc++.so.6.0.21 from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/lib/libm.so.6...Reading /lib/libm-2.22.so from
remote target...
Reading /lib/.debug/libm-2.22.so from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/lib/libgcc_s.so.1...Reading
/lib/.debug/libgcc_s.so.1 from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/lib/libc.so.6...Reading /lib/libc-2.22.so from
remote target...
Reading /lib/.debug/libc-2.22.so from remote target...
(no debugging symbols found)...done.
Reading symbols from target:/lib/ld-linux-armhf.so.3...Reading /lib/ld-2.22.so
from remote target...
Reading /lib/.debug/ld-2.22.so from remote target...
(no debugging symbols found)...done.
Reading /lib/ld-linux-armhf.so.3 from remote target...
[New Thread 12910.12912]
[New Thread 12910.12913]
[New Thread 12910.12914]
[New Thread 12910.12915]
[New Thread 12910.12916]
[New Thread 12910.12917]
[New Thread 12910.12919]
[New Thread 12910.12920]
[New Thread 12910.12921]
[New Thread 12910.12922]
[New Thread 12910.12923]
[New Thread 12910.12924]
[New Thread 12910.12925]
[New Thread 12910.12926]
[New Thread 12910.12927]
[New Thread 12910.12928]
[New Thread 12910.13024]
[New Thread 12910.13025]
[New Thread 12910.13026]
[New Thread 12910.13027]
[New Thread 12910.13028]
[New Thread 12910.13029]
[New Thread 12910.13030]
[New Thread 12910.13031]
[New Thread 12910.13032]
[New Thread 12910.13033]
[New Thread 12910.13034]
[New Thread 12910.13041]
0x76885924 in nanosleep () from target:/lib/libc.so.6
(gdb) b printWithArgs1
Function "printWithArgs1" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (printWithArgs1) pending.
(gdb) c
Continuing.
Reading /home/root/libdebugTest.so from remote target...
[Switching to Thread 12910.13041]
Thread 29 "myApp" hit Breakpoint 1, printWithArgs1 (a=0x621011b0 " esha", b=12,
c=45.6699982) at ..\debugTest.c:9
9 printf("\n\n a: %s, b: %d, c: %f\n\n", a, b, c);
(gdb) c
Continuing.
warning: Temporarily disabling breakpoints for unloaded shared library
"target:/home/root/libdebugTest.so"
The target is not responding to interrupt requests.
Stop debugging it? (y or n) deQuit (expect signal SIGINT when the program is
resumed)
(gdb) detach
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
(gdb) i inferiors
Num Description Executable
* 1 process 12910 target:/home/root/myApp
(gdb) detach inferior 1
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
(gdb) help detach inferior
Detach from inferior ID (or list of IDS).
(gdb) detach inferior 1
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
(gdb) Quit (expect signal SIGINT when the program is resumed)
(gdb) detach inferior 1
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
(gdb) detach
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
(gdb) q
A debugging session is active.
Inferior 1 [process 12910] will be detached.
Quit anyway? (y or n) y
Cannot execute this command while the target is running.
Use the "interrupt" command to stop the target
and then try again.
At gdbserver side (Remote target), this message is displayed:
root@user:~# gdbserver --multi :5000
Listening on port 5000
Remote debugging from host 192.168.2.23
Attached; pid = 12910
client connection closed
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>From gdb-prs-return-22091-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 14 09:55:05 2017
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From: "eshaahuja1991 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/22435] During remote debugging, gdbserver is unable to
connect to gdb client when the debug session is invoked for the second time
Date: Tue, 14 Nov 2017 09:55:00 -0000
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--- Comment #1 from eshaahuja1991 at gmail dot com ---
For debugging an application which is already running on remote target
(architecture: arm-linux-gnueabihf), I am using gdb from Linaro toolchain: GNU
gdb (Linaro_GDB-2017.05) 7.12.1.20170417-git and on the target, gdbserver(GNU
gdbserver (GDB) 7.12.1.20170417-git). I have ran the gdbserver on the remote
target side in a multi mode as: 'gdbserver --multi :<port no>. The commands
used for debugging the application (myApp) remotely, which is already running
on remote target are highlighted in the gdb traces below.
After the debug is complete, I want to detach my application (myApp) from gdb,
because my application (myApp) should be running indefinitely. I tried the
commands: detach, detach inferior id, but got the response that "Cannot execute
this command while the target is running. Use the "interrupt" command to stop
the target and then try again". I then tried to give interrupt command,
keyboard interrupt. After this, I got back the gdb control, then I tried to
quit the gdb session using "q" command. I response I got after this is: "A
debugging session is active. Inferior 1 [process 12910] will be detached. Quit
anyway? (y or n)". I entered "y" as my response which gave the response as:
"Cannot execute this command while the target is running. Use the "interrupt"
command to stop the target and then try again". This completed my gdb client
session. At the remote target side, gdbserver responded to this quit as:
"client connection closed".
This debug session was successful. But as my gdbserver was in multi mode, when
I try to start a new debug session and attach my running application (myApp)
again to gdbserver which is already running in multi mode on the same port
number, my gdb client at host is unable to connect to gdbserver at target side.
This command is not executed: "target extended-remote 192.168.2.2:5000"
Earlier with gdb 7.8 and gdbserver 7.8, I was able to successfully detach my
running application (myApp). And the above scenario of attaching a process
again to the same gdbserver used to work. But gdbserver 7.8 did not support
debugging child process, hence i needed to move to gdb client and server 7.12,
which supports child process debug.
Detailed gdb traces are as provided before
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From: "wsimmons at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Tue, 14 Nov 2017 14:12:00 -0000
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Wade Simmons <wsimmons at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wsimmons at gmail dot com
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>From gdb-prs-return-22093-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 14 22:40:19 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22388] assertion "xfered_len>0" in target.c for remote
connection
Date: Tue, 14 Nov 2017 22:40:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=92ffd475192030a46a6046177c732372b4dadad5
commit 92ffd475192030a46a6046177c732372b4dadad5
Author: Paul Carroll <pcarroll@codesourcery.com>
Date: Tue Nov 14 17:37:37 2017 -0500
Fix 'xfered>0' assertion in target.c for remote connection
We have a customer who is using a Corelis gdb server to connect to gdb.
Occasionally, the gdb server will send a 0-byte block of memory for a
read. When this happens, gdb gives an assertion from target.c:
internal-error: target_xfer_partial: Assertion `*xfered_len > 0' failed.
This problem is almost identical to that fixed in
https://sourceware.org/ml/gdb-patches/2014-02/msg00636.html
In this case, remote.c needs to be modified to return TARGET_XFER_EOF
instead of TARGET_XFER_OK or TARGET_XFER_UNAVAILABLE when 0 bytes are
transferred.
gdb/ChangeLog:
PR gdb/22388
* remote.c (remote_write_bytes_aux, remote_read_bytes_1,
remote_read_bytes, remote_write_qxfer, remote_xfer_partial):
Return TARGET_XFER_EOF if size of returned data is 0.
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>From gdb-prs-return-22094-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 14 22:41:47 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22388] assertion "xfered_len>0" in target.c for remote
connection
Date: Tue, 14 Nov 2017 22:41:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |simon.marchi at ericsson dot com
Resolution|--- |FIXED
--- Comment #3 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fix pushed:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=92ffd475192030a46a6046177c732372b4dadad5
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>From gdb-prs-return-22095-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 15 23:38:10 2017
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From: "weimin.pan at oracle dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20760] Crash when casting variable to char[][] type
Date: Wed, 15 Nov 2017 23:38:00 -0000
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--- Comment #1 from weimin.pan at oracle dot com ---
Upstream gdb can now handle the "print" command correctly:
(gdb) break main
Breakpoint 1 at 0x100570: file cast-crash.c, line 3.
(gdb) run
Starting program: /tmp/20760/a.out
Breakpoint 1, main (argc=1, argv=0x7fefffff508) at cast-crash.c:3
3 return 0;
(gdb) print (char[][]) argc
$1 = {"", "", "", "\001"}
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>From gdb-prs-return-22096-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 16 15:34:46 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/20760] Crash when casting variable to char[][] type
Date: Thu, 16 Nov 2017 15:34:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Casting to "type[]" results in reinterpreting the object as an array of the
same size (in bytes) as the original object.
(top-gdb) p argc
$1 = 2
(top-gdb) p /x (char[]) argc
$2 = {0x2, 0x0, 0x0, 0x0}
(top-gdb) p /x (char[4]) argc
$3 = {0x2, 0x0, 0x0, 0x0}
(top-gdb) p sizeof ((char[]) argc)
$4 = 4
(top-gdb) p /x (char[]) argv
$5 = {0x98, 0xd9, 0xff, 0xff, 0xff, 0x7f, 0x0, 0x0}
(top-gdb) p /z argv
$6 = 0x00007fffffffd998
(top-gdb) p sizeof ((char[]) argv)
$7 = 8
(top-gdb) p sizeof ((char[]) argv[0])
$8 = 8
(top-gdb) p sizeof ((char[]) argv[0][0])
$9 = 1
Not sure exactly how a cast to "type[][]", should behave, though. Should
probably be an error -- in C/C++, multidimensional arrays must have bounds
for all dimensions except the first.
Current master still crashes if you pass 0 as bound size for one of the
dimensions:
(gdb) p (char[][0])argc
/home/pedro/gdb/src/gdb/gdbtypes.c:4819: internal-error: type* copy_type(const
type*): Assertion `TYPE_OBJFILE_OWNED (type)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
Same for "(char[0][])".
OOC, while at it, it looks like GDB treats arrays with zero elements as having
sizeof == 0, just like GCC, but then when you print the array it prints "0x0":
(top-gdb) p (char[0]) argc
$1 = 0x0
(top-gdb) ptype $3
type = char [0]
(top-gdb) p $3
$2 = 0x0
That should probably better print an empty array instead:
$2 = {}
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Subject: [Bug gdb/22453] New: "maint space" doesn't work with "gdb -ex"
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https://sourceware.org/bugzilla/show_bug.cgi?id=22453
Bug ID: 22453
Summary: "maint space" doesn't work with "gdb -ex"
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
Target Milestone: ---
I was trying to write a little script to investigate gdb memory use.
I tried:
gdb -nx -batch -ex 'maint space 1' -ex 'file ./gdb'
However, this doesn't work.
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>From gdb-prs-return-22098-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 15:33:17 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/22454] New: logging sometimes prints prompt
Date: Fri, 17 Nov 2017 15:33:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22454
Bug ID: 22454
Summary: logging sometimes prints prompt
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: cli
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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I was trying to script gdb and I noticed that sometimes, the prompt
will show up in the logging output.
Try this:
gdb -nx << END
set logging file /tmp/out
set logging on
print 23
quit
END
When I do this, /tmp/out contains:
(gdb) $1 = 23
(gdb)
(... and there's no final newline)
On irc palves said:
<palves_> probably readline vs no-readline.
<palves_> try "set editing off" in an interactive session.
<palves_> I see prompts in the log with that.
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>From gdb-prs-return-22099-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 15:34:30 2017
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Subject: [Bug cli/22454] logging sometimes prints prompt
Date: Fri, 17 Nov 2017 15:34:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22454
--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
Sticking 'set editing on' into the script worked for me.
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>From gdb-prs-return-22100-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 15:39:27 2017
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Subject: [Bug c++/8128] setting a breakpoint on C++ member functions
Date: Fri, 17 Nov 2017 15:39:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=8128
Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
--- Comment #7 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Hm, this bug has been closed, but judging by the commit log it was probably a
typo/thinko. I think bug 8218 should have been closed instead, right?
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>From gdb-prs-return-22101-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 15:40:26 2017
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Subject: [Bug c++/8218] ptype claims destructors have arg
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--- Comment #6 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Bug 8128 has been closed, but commit 5f4d10850850cd95af5e95a16848c8c07a273d88
apparently fixes this one.
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>From gdb-prs-return-22102-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 16:13:24 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/22455] New: blank line repeats commands even when scripting
Date: Fri, 17 Nov 2017 16:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22455
Bug ID: 22455
Summary: blank line repeats commands even when scripting
Product: gdb
Version: HEAD
Status: NEW
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Assignee: unassigned at sourceware dot org
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Try this:
gdb -nx << END
print 23
END
I get this in the output:
(gdb) $1 = 23
(gdb) $2 = 23
The reason is that gdb is repeating the command, due to the blank line.
I think instead gdb should only repeat when the commands are coming
from the tty.
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>From gdb-prs-return-22103-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 17 17:59:49 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/22456] New: Can't access minsyms in Rust
Date: Fri, 17 Nov 2017 17:59:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22456
Bug ID: 22456
Summary: Can't access minsyms in Rust
Product: gdb
Version: HEAD
Status: NEW
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Component: rust
Assignee: unassigned at sourceware dot org
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Currently you can't print minsyms when the current language is rust:
$ gdb ./testsuite/outputs/gdb.base/nodebug/nodebug
...
(gdb) show language
The current source language is "auto; currently c".
(gdb) p dataglobal
'dataglobal' has unknown type; cast it to its declared type
(gdb) set language rust
(gdb) p dataglobal
No symbol 'dataglobal' in current context
gdb.base/nodebug.exp currently has this to cope:
# Rust can't access minsyms?
set rust_nosym "No symbol 'top' in current context"
which will need to be tweaked if/when the problem is fixed.
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From: "sebastien15753 at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug breakpoints/22461] New: breakpoint after mprotect
Date: Sun, 19 Nov 2017 20:24:00 -0000
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Bug ID: 22461
Summary: breakpoint after mprotect
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Created attachment 10622
--> https://sourceware.org/bugzilla/attachment.cgi?id=10622&action=edit
code that induce the bug
I built a shared library (.so) and a binary that use this library.
The binary results in the compilation of main.c (in attachment) and is mapped
from 0x555555554000 to 0x555555555000.
The library results in the compilation of perso.c(in attachment) and is mapped
from 0x7ffff7bd6000 to 7ffff7bd7000.
The main() function simply call a function in that library.
The function in the library remove the PROT_EXEC flag of the range
0x555555554000 to 0x555555555000 where is mapped the binary, execute another
function called `myfunction` in the same library and restore the PROT_EXEC flag
of the range 0x555555554000 to 0x555555555000.
Executing it inside gdb with no breakpoints works fine.
The bug is, if I set a breakpoint at myfunction() and execute it I have a
SIGSEGV signal.
One can reproduce the bug by downloading the attached files and compile by
using the Makefile.
gdb commands for reproduction are :
$ gdb binary
(gdb) b main
(gdb) r
(gdb) b myfunction
(gdb) c
(gdb) si #SIGSEGV
An example is done in attachment as a screenshot.
Some other useful information :
[seb@archlinux code]$ uname -a
Linux archlinux 4.13.12-1-ARCH #1 SMP PREEMPT Wed Nov 8 11:54:06 CET 2017
x86_64 GNU/Linux
[seb@archlinux code]$ gcc -v
Utilisation des specs internes.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-pc-linux-gnu/7.2.0/lto-wrapper
Cible : x86_64-pc-linux-gnu
Configuré avec: /build/gcc/src/gcc/configure --prefix=/usr --libdir=/usr/lib
--libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info
--with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --enable-libmpx --with-system-zlib --with-isl
--enable-__cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu
--disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object
--enable-linker-build-id --enable-lto --enable-plugin
--enable-install-libiberty --with-linker-hash-style=gnu
--enable-gnu-indirect-function --disable-multilib --disable-werror
--enable-checking=release --enable-default-pie --enable-default-ssp
Modèle de thread: posix
gcc version 7.2.0 (GCC)
[seb@archlinux code]$ gdb -v
GNU gdb (GDB) 8.0.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word".
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>From gdb-prs-return-22105-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 20 19:10:36 2017
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From: "brobecker at gnat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Mon, 20 Nov 2017 19:10:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22206
Joel Brobecker <brobecker at gnat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
Target Milestone|8.1 |---
--- Comment #4 from Joel Brobecker <brobecker at gnat dot com> ---
Hello. First of all, thank you for working on this and the patch your checked
in.
Since the debugger now has your patch and compiled, I removed the target
milestone, as I don't view this as blocking for 8.1 release anymore. If I
missed something, please let me know.
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>From gdb-prs-return-22106-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 02:00:30 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug macros/22466] New: user-defined function thinks it lacks an
argument
Date: Tue, 21 Nov 2017 02:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22466
Bug ID: 22466
Summary: user-defined function thinks it lacks an argument
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: macros
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
Steps:
1. Define in gdb_init the following function:
define print_arg2
print ($argc == 0)? $rsi : *($arg0*)$rsi
end
2. Start debugging, and run "print_arg2"
Expected results: print of the $rsi register
Actual results: error "Missing argument 0 in user function."
Additional info: it works with the following, semantically the same, code:
define print_arg2
if ($argc == 0)
print $rsi
else
print *($arg0*)$rsi
end
end
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>From gdb-prs-return-22107-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 02:34:35 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug macros/22467] New: No way to undefine defined function
Date: Tue, 21 Nov 2017 02:34:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22467
Bug ID: 22467
Summary: No way to undefine defined function
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: macros
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
gdb has lots of shortcuts, and sometimes user-defined functions overlaps with
them. E.g. I was just experimenting with printing within a live debugging
session, and without any backthought I defined a function named "p". This
effectively made all my commands on breakpoints that using "p" as a shortcut to
"print" invalid, and worsened experience because I can't use the single letter
anymore; and there's no way to revert this change other than quitting the
session or defining a function "p" with a loop for passing arguments to the
actual "print".
There should be a way to undefine user-defined functions.
There's also a question on SO:
https://stackoverflow.com/questions/32378107/delete-user-defined-commands-in-gdb
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>From gdb-prs-return-22108-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 03:45:38 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22468] New: gdb don't track the size of the command prompt
Date: Tue, 21 Nov 2017 03:45:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22468
Bug ID: 22468
Summary: gdb don't track the size of the command prompt
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
Steps:
1. open gdb
2. type "echo hello", press enter
3. press "Up" to show the command again
4. Press Ctrl+a to set the caret at the beginning of the line
Expected results: caret is before the word "echo"
Actual results: caret gets set to behind the word "gdb" (i.e. behind the
command prompt).
Additional info: this might be related to
https://sourceware.org/bugzilla/show_bug.cgi?id=21689
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>From gdb-prs-return-22109-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 10:49:28 2017
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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22206] [8.1 regression] SPARC M7 ADI patches break
Solaris build
Date: Tue, 21 Nov 2017 10:49:00 -0000
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--- Comment #5 from Rainer Orth <ro at CeBiTec dot Uni-Bielefeld.DE> ---
No, that's fine. I do have some notes on how to make this work on
Solaris, and even the hardware to test it, but it will probably be some
time.
Rainer
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>From gdb-prs-return-22110-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 16:13:19 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/16224] add "pahole" functionality to ptype
Date: Tue, 21 Nov 2017 16:13:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
CC| |sergiodj at redhat dot com
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Patch: https://sourceware.org/ml/gdb-patches/2017-11/msg00435.html
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>From gdb-prs-return-22111-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 18:47:11 2017
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22468] gdb don't track the size of the command prompt
Date: Tue, 21 Nov 2017 18:47:00 -0000
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--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
You should add a newline. Type C-l to recover.
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>From gdb-prs-return-22112-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 18:49:50 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22468] gdb don't track the size of the command prompt
Date: Tue, 21 Nov 2017 18:49:00 -0000
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--- Comment #2 from Hi-Angel <hi-angel at yandex dot ru> ---
I understand that, I mostly reported because I think this might be caused by
similar problem of not tracking the size as the other bug with colors, where it
is more serious, serious enough to not actually use colors in command prompt.
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>From gdb-prs-return-22113-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 21 21:56:53 2017
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22468] gdb don't track the size of the command prompt
Date: Tue, 21 Nov 2017 21:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22468
--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
If you want to include non-printing characters in the prompt you need to
bracket them with \[ \].
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>From gdb-prs-return-22114-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 22 02:06:30 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22468] gdb don't track the size of the command prompt
Date: Wed, 22 Nov 2017 02:06:00 -0000
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--- Comment #4 from Hi-Angel <hi-angel at yandex dot ru> ---
(In reply to Andreas Schwab from comment #3)
> If you want to include non-printing characters in the prompt you need to
> bracket them with \[ \].
It doesn't help. I just tried reproducing the linked bug #21689 but with
surrouding the prompt with \[ and \] — and it still repro.
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22472] New: Arguments evaluation doesn't always work
Date: Wed, 22 Nov 2017 05:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22472
Bug ID: 22472
Summary: Arguments evaluation doesn't always work
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
Steps to reproduce:
1. start `gdb -nh`
2. define the following command
(gdb) define argnum
Type commands for definition of "argnum".
End with a line saying just "end".
>print $argc
>end
(gdb)
3. type the following:
(gdb) argnum (1+1)
$1 = 1
works as expected.
4. type the following:
(gdb) argnum (1 + 1)
$2 = 3
Expected: same result as at point 3.
Actual result: gdb did not evaluate the argument, and passed three instead of
one.
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From: "michael.platzer at hotmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22474] New: Python API: stop event: GDB crashes if
function called through parse_and_eval() exits
Date: Wed, 22 Nov 2017 09:52:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22474
Bug ID: 22474
Summary: Python API: stop event: GDB crashes if function called
through parse_and_eval() exits
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: michael.platzer at hotmail dot com
Target Milestone: ---
Created attachment 10626
--> https://sourceware.org/bugzilla/attachment.cgi?id=10626&action=edit
The *.c and *.py files to reproduce the error.
OS: 4.13.11-1-ARCH x86_64 GNU/Linux
GDB version: GNU gdb (GDB) 8.0.1.20171108-git (local build)
GCC version: gcc (GCC) 7.2.0 (arch linux package)
Python version: Python 3.6.3 (arch linux package)
Note: GNU gdb (GDB) 8.0.1 (arch linux package) behaves identically
I execute GDB in batch mode, running a python script which uses an event
handler to catch stop events caused by breakpoints; within the event handler,
calling a function in the executable (using gdb.parse_and_eval()) which in turn
calls exit(3) produces an assertion violation in thread.c:
../../gdb/thread.c:101: internal-error: thread_info* inferior_thread():
Assertion `tp' failed.
STEPS TO REPRODUCE:
1. Create a *.c and a *.py file, with following content:
--------------------------------------------------------------------------------
$ cat foo_exit.c
#include <stdlib.h>
void foo()
{
exit(0);
}
int main(int argc, char *argv[])
{
return 0;
}
$ cat bp_stop.py
import gdb
def stop_handler(ev):
if type(ev) is gdb.BreakpointEvent:
try:
gdb.parse_and_eval('foo()')
except gdb.error as err:
print('caught gdb error: ' + str(err))
gdb.events.stop.connect(stop_handler)
gdb.execute('break main')
gdb.execute('run')
--------------------------------------------------------------------------------
2. Compile the *.c file:
--------------------------------------------------------------------------------
$ gcc -g -o foo_exit foo_exit.c
--------------------------------------------------------------------------------
3. Run GDB:
--------------------------------------------------------------------------------
$ gdb --batch -x bp_stop.py foo_exit
Breakpoint 1 at 0x663: file foo_exit.c, line 8.
[Inferior 1 (process 3415) exited normally]
caught gdb error: The program being debugged exited while in a function called
from GDB.
Evaluation of the expression containing the function
(foo) will be abandoned.
../../gdb/thread.c:101: internal-error: thread_info* inferior_thread():
Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
../../gdb/thread.c:101: internal-error: thread_info* inferior_thread():
Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
Aborted (core dumped)
--------------------------------------------------------------------------------
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To: gdb-prs@sourceware.org
Subject: [Bug python/22475] New: Python API: breakpoint subclass: GDB crashes
if function called through parse_and_eval() exits
Date: Wed, 22 Nov 2017 09:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22475
Bug ID: 22475
Summary: Python API: breakpoint subclass: GDB crashes if
function called through parse_and_eval() exits
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
Reporter: michael.platzer at hotmail dot com
Target Milestone: ---
Created attachment 10627
--> https://sourceware.org/bugzilla/attachment.cgi?id=10627&action=edit
The *.c and *.py files to reproduce the error.
OS: 4.13.11-1-ARCH x86_64 GNU/Linux
GDB version: GNU gdb (GDB) 8.0.1.20171108-git (local build)
GCC version: gcc (GCC) 7.2.0 (arch linux package)
Python version: Python 3.6.3 (arch linux package)
Note: GNU gdb (GDB) 8.0.1 (arch linux package) behaves identically
I execute GDB in batch mode, running a python script which uses a subclass of
gdb.Breakpoint; within the stop() method of this subclass, calling a function
in the executable (using gdb.parse_and_eval()) which in turn calls exit(3)
produces an assertion violation in thread.c:
../../gdb/thread.c:1123: internal-error: void finish_thread_state(ptid_t):
Assertion `tp' failed.
STEPS TO REPRODUCE:
1. Create a *.c and a *.py file, with following content:
--------------------------------------------------------------------------------
$ cat foo_exit.c
#include <stdlib.h>
void foo()
{
exit(0);
}
int main(int argc, char *argv[])
{
return 0;
}
$ cat bp_stop.py
import gdb
class MainBreak(gdb.Breakpoint):
def stop(self):
try:
gdb.parse_and_eval('foo()')
except gdb.error as err:
print('caught gdb error: ' + str(err))
MainBreak('main')
gdb.execute('run')
--------------------------------------------------------------------------------
2. Compile the *.c file:
--------------------------------------------------------------------------------
$ gcc -g -o foo_exit foo_exit.c
--------------------------------------------------------------------------------
3. Run GDB:
--------------------------------------------------------------------------------
$ gdb --batch -x bp_stop.py foo_exit
Breakpoint 1 at 0x663: file foo_exit.c, line 8.
[Inferior 1 (process 3843) exited normally]
caught gdb error: The program being debugged exited while in a function called
from GDB.
Evaluation of the expression containing the function
(foo) will be abandoned.
../../gdb/thread.c:1123: internal-error: void finish_thread_state(ptid_t):
Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) [answered Y; input not from terminal]
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
../../gdb/thread.c:1123: internal-error: void finish_thread_state(ptid_t):
Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) [answered Y; input not from terminal]
Aborted (core dumped)
--------------------------------------------------------------------------------
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>From gdb-prs-return-22118-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 22 18:45:55 2017
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From: "schwab@linux-m68k.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22472] Arguments evaluation doesn't always work
Date: Wed, 22 Nov 2017 18:45:00 -0000
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Andreas Schwab <schwab@linux-m68k.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #1 from Andreas Schwab <schwab@linux-m68k.org> ---
Argument parsing is purely textual.
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>From gdb-prs-return-22119-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 22 20:41:18 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22472] Arguments evaluation doesn't always work
Date: Wed, 22 Nov 2017 20:41:00 -0000
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--- Comment #2 from Hi-Angel <hi-angel at yandex dot ru> ---
@Andreas I am sorry about that. But why did you close the bug as invalid?
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From: "b2.temp at gmx dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug d/22480] New: `ptype` returns `struct` for D classes
Date: Thu, 23 Nov 2017 01:13:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22480
Bug ID: 22480
Summary: `ptype` returns `struct` for D classes
Product: gdb
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: d
Assignee: unassigned at sourceware dot org
Reporter: b2.temp at gmx dot com
Target Milestone: ---
---
module runnable;
class A {}
void main()
{
A a;
}
---
`ptype a`
gives
---
type = struct runnable.A {
<no data fields>
} *
---
which means that there's not the hint required if we must
`print a`
or
`print *a`
the later syntax is required for a class.
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>From gdb-prs-return-22121-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 23 11:54:47 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22481] New: Python Exception <class 'gdb.error'> Trying to
read string with inappropriate type `int'.:
Date: Thu, 23 Nov 2017 11:54:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22481
Bug ID: 22481
Summary: Python Exception <class 'gdb.error'> Trying to read
string with inappropriate type `int'.:
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: hi-angel at yandex dot ru
Target Milestone: ---
#Steps to reproduce:
1. Write the following code to ~/gdb.py
class my_print:
def __init__(self, val):
self.val = val
def to_string(self):
return self.val.string()
def lookup_type_my_int (val):
if str(val.type) == 'int':
return my_print(val)
return None
gdb.pretty_printers.append(lookup_type_my_int)
2. Run `gdb -nh`
3. type `source ~/gdb.py`
4. type `print 1`
Expected result: the value of "val" is printed
Actual results: error "$1 = Python Exception <class 'gdb.error'> Trying to read
string with inappropriate type `int'.:".
#Additional info:
python version 3.6.3
Some more results because this issue might be useful for someone coming from
google in attempt to use pretty printers:
Using "return str(self.val)" results in "$1 = Python Exception <class
'RecursionError'> maximum recursion depth exceeded in comparison:
1"
And using simply "return self.val" results in "[1] 29554 segmentation fault
(core dumped) gdb -q -nh"
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>From gdb-prs-return-22122-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 23 22:20:50 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22475] Python API: breakpoint subclass: GDB crashes if
function called through parse_and_eval() exits
Date: Thu, 23 Nov 2017 22:20:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-11-23
CC| |qiyao at gcc dot gnu.org
Ever confirmed|0 |1
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
Reproduced with GDB 8.0.1, 8.0, and 7.11.1.
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>From gdb-prs-return-22123-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 23 22:22:34 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22475] Python API: breakpoint subclass: GDB crashes if
function called through parse_and_eval() exits
Date: Thu, 23 Nov 2017 22:22:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |8.1
--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
Set the target milestone to 8.1, although it is not a regression from last
release.
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>From gdb-prs-return-22124-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 24 03:53:22 2017
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From: "17joshuanewcomb at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/22487] New: `51-var-list-children var3` is not returning
within 10 seconds
Date: Fri, 24 Nov 2017 03:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22487
Bug ID: 22487
Summary: `51-var-list-children var3` is not returning within 10
seconds
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: exp
Assignee: unassigned at sourceware dot org
Reporter: 17joshuanewcomb at gmail dot com
Target Milestone: ---
I have a rather severe problem using gdb through eclipse. The command
"-var-list-children var3" fails to return during certain stages of debugging.
When this happens, it doesn't just lock up, it causes a fairly rapid memory
leak, forcing me to terminate gdb and the debugging session with it. On my
system, its a very reproducable problem.
GDB 8.0.1-1
Arch Linux Kernel version 4.13.12-1
IDE: Eclipse CDT latest
P.S. I already filed a bug report to the eclipse devs, they found nothing wrong
with their software, and told me to come to you with this problem, I am hoping
you can help fix this. I really depend on GDB to get anything done in the world
of programming.
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>From gdb-prs-return-22125-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Nov 24 22:27:29 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug macros/22467] No way to undefine defined function
Date: Fri, 24 Nov 2017 22:27:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2017-11-24
CC| |sergiodj at redhat dot com
Assignee|unassigned at sourceware dot org |sergiodj at redhat dot com
Ever confirmed|0 |1
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I have a patch for that.
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>From gdb-prs-return-22126-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Nov 25 01:39:30 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22491] New: gdb.arch/amd64-stap-optional-prefix.exp fails
after probe C++-ification patch
Date: Sat, 25 Nov 2017 01:39:00 -0000
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Bug ID: 22491
Summary: gdb.arch/amd64-stap-optional-prefix.exp fails after
probe C++-ification patch
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: sergiodj at redhat dot com
Reporter: sergiodj at redhat dot com
Target Milestone: 8.1
Pedro has pointed out that a regression has been introduced by my C++-ification
patches touching the probe interfaces
(https://sourceware.org/ml/gdb-patches/2017-11/msg00525.html).
The problem happens on gdb.arch/amd64-stap-optional-prefix.exp:
77 break -pstap bar
78 Breakpoint 3 at 0x40048d
79 (gdb) PASS: gdb.arch/amd64-stap-optional-prefix.exp: bar: break -pstap bar
80 continue
81 Continuing.
82
83 Program received signal SIGILL, Illegal instruction.
84 main () at amd64-stap-optional-prefix.S:26
85 26 STAP_PROBE1(probe, foo, (%rsp))
It is still not clear why, but I am investigating. I am marking this bug's
Target milestone to 8.1, because it is a regression that shouldn't be present
in the next branch.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22491] gdb.arch/amd64-stap-optional-prefix.exp fails after
probe C++-ification patch
Date: Sat, 25 Nov 2017 01:39:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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Subject: [Bug gdb/22491] gdb.arch/amd64-stap-optional-prefix.exp fails after
probe C++-ification patch
Date: Sat, 25 Nov 2017 06:25:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Fixed.
685de8c2990a04fba5e2954b7ff089a2c641071f
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22491] gdb.arch/amd64-stap-optional-prefix.exp fails after
probe C++-ification patch
Date: Sat, 25 Nov 2017 06:25:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=685de8c2990a04fba5e2954b7ff089a2c641071f
commit 685de8c2990a04fba5e2954b7ff089a2c641071f
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Sat Nov 25 01:13:03 2017 -0500
Fix PR gdb/22491: Regression when setting SystemTap probe semaphores
Pedro has kindly pointed out that
gdb.arch/amd64-stap-optional-prefix.exp was failing after my
C++-ification patches touching the probe interface. The failure is
kind of cryptic:
77 break -pstap bar
78 Breakpoint 3 at 0x40048d
79 (gdb) PASS: gdb.arch/amd64-stap-optional-prefix.exp: bar: break -pstap
bar
80 continue
81 Continuing.
82
83 Program received signal SIGILL, Illegal instruction.
84 main () at amd64-stap-optional-prefix.S:26
85 26 STAP_PROBE1(probe, foo, (%rsp))
It took me a while to figure out where this SIGILL is coming from.
Initially I thought it was something related to writing registers to
the inferior when dealing with probe arguments, but I discarded this
since the arguments were not touching any registers.
In the end, this was a mistake that was introduced during the review
process of the patch. When setting/clearing a SystemTap probe's
semaphore, the code was using 'm_address' (which refers the probe's
address) instead of 'm_sem_addr' (which refers to the semaphore's
address). This caused GDB to write a bogus value in the wrong memory
position, which in turn caused the SIGILL.
I am pushing this patch to correct the mistake.
On a side note: I told Pedro that the BuildBot hadn't caught the
failure during my try build, and for a moment there was a suspicion
that the BuildBot might be at fault here. However, I investigate this
and noticed that I only did one try build, with a patch that was
correctly using 'm_sem_addr' where applicable, and therefore no
failure should have happened indeed. I probably should have requested
another try build after addressing the review's comments, but they
were mostly basic and I didn't think it was needed. Oh, well.
2017-11-25 Sergio Durigan Junior <sergiodj@redhat.com>
PR gdb/22491
* stap-probe.c (relocate_address): New function.
(stap_probe::get_relocated_address): Use 'relocate_address'.
(stap_probe::set_semaphore): Use 'relocate_address' and pass
'm_sem_addr'.
(stap_probe::clear_semaphore): Likewise.
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>From gdb-prs-return-22130-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Nov 25 16:48:43 2017
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From: "hi-angel at yandex dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22472] Arguments evaluation doesn't always work
Date: Sat, 25 Nov 2017 16:48:00 -0000
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--- Comment #3 from Hi-Angel <hi-angel at yandex dot ru> ---
@Andreas let me elaborate: such behavior is irrational for obvious reasons. I
know a lot of languages, but not a single one, where passing an arithmetic
operation in braces without whitespace works different from doing the same with
whitespace.
So, do you have a link to docs or whatever to confirm that this is a valid
behavior?
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>From gdb-prs-return-22131-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Nov 26 09:58:42 2017
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From: "kryukov at frtk dot ru" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug build/22495] New: remote-sim.c should be built with
-Wno-format-literal
Date: Sun, 26 Nov 2017 09:58:00 -0000
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Bug ID: 22495
Summary: remote-sim.c should be built with -Wno-format-literal
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
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Assignee: unassigned at sourceware dot org
Reporter: kryukov at frtk dot ru
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Hi
remote-sim.c contains calls of `vfprintf_filtered` function with non-literal
format. Clang is able to track that if '-Wformat-literal' warning is enabled,
leading to compilation failure:
clang++-5.0 -x c++ -std=gnu++11 -g -O2 -I. -I. -I./common -I./config
-DLOCALEDIR="\"/home/travis/build/pavelkryukov/gnu-binutils-clang/binutils-gdb/cross/mips/share/locale\""
-DHAVE_CONFIG_H -I./../include/opcode -I./../opcodes/.. -I./../readline/..
-I../bfd -I./../bfd -I./../include -I../libdecnumber -I./../libdecnumber
-I./gnulib/import -Ibuild-gnulib/import -DTUI=1 -I/usr/include/python2.7
-I/usr/include/python2.7 -Wall -Wpointer-arith -Wno-unused -Wunused-value
-Wunused-function -Wno-switch -Wno-char-subscripts -Wempty-body
-Wno-sign-compare -Wno-narrowing -Wno-mismatched-tags -Wformat-nonliteral
-Werror -c -o remote-sim.o -MT remote-sim.o -MMD -MP -MF ./.deps/remote-sim.Tpo
remote-sim.c
remote-sim.c:386:34: error: format string is not a string literal
[-Werror,-Wformat-nonliteral]
vfprintf_filtered (gdb_stdout, format, args);
As a workaround, we may add an exception for `remote-sim.c` in the same manner
as for `target-float.c`. I pushed a patch to master branch of this repository:
https://github.com/pavelkryukov/binutils-gdb.git
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Subject: [Bug build/22495] remote-sim.c should be built with
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Pavel I. Kryukov <kryukov at frtk dot ru> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|remote-sim.c should be |remote-sim.c should be
|built with |built with
|-Wno-format-literal |-Wno-format-nonliteral
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Subject: [Bug fortran/22497] New: Unable to access base type of derived types
Date: Sun, 26 Nov 2017 17:34:00 -0000
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Bug ID: 22497
Summary: Unable to access base type of derived types
Product: gdb
Version: 8.0.1
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Given the program below, I get the following error when trying to print the
base type of "bar":
(gdb) p bar%my_type
A syntax error in expression, near `my_type'.
(gdb) p bar%my_int
There is no member named my_int.
(gdb) p bar%my_type%my_int
A syntax error in expression, near `my_type%my_int'.
(gdb) p bar
$1 = ( my_type = ( my_int = 1 ) )
Note that all of the expressions I'm trying to print are valid Fortran
expressions, and that `p foo%my_int` works
MVCE:
program mvce
implicit none
type :: my_type
integer :: my_int
end type my_type
type, extends(my_type) :: extended_type
end type extended_type
type(my_type) :: foo
type(extended_type) :: bar
foo%my_int = 0
bar%my_int = 1
print*, foo, bar
end program mvce
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Subject: [Bug python/22498] New: Can't access type component when calling
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Bug ID: 22498
Summary: Can't access type component when calling script from
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Running the "reproducer.py" script below from the command line results in:
{my_char = 'good'} <error reading variable>
while calling it from inside gdb produces the correct result:
(gdb) py exec(open("reproducer.py").read())
...
( my_char = 'good' ) 'good'
Changing `my_char` to type `integer` does seem to work though.
---
mvce.f90:
program mvce
implicit none
type :: my_type
character(len=4) :: my_char
end type my_type
type(my_type) :: foo
foo%my_char = "good"
print*, foo%my_char
end program mvce
---
reproducer.py:
gdb.execute("file a.out")
gdb.execute("b 11")
gdb.execute("run")
foo = gdb.parse_and_eval("foo")
print(foo, foo['my_char'])
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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| |palves at redhat dot com
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Subject: [Bug gdb/22499] New: 8.0 regression: wrongly read $xmm0
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Bug ID: 22499
Summary: 8.0 regression: wrongly read $xmm0
Product: gdb
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gdb prints wrong result of double variable in -mavx mode
https://bugzilla.redhat.com/show_bug.cgi?id=1515209
by the courtesy of Peter Steinbach
398e081380a204e3b9fb4eb4da069ccf471f930e is the first bad commit
commit 398e081380a204e3b9fb4eb4da069ccf471f930e
Author: Pedro Alves <palves@redhat.com>
Date: Wed Sep 30 19:23:39 2015 +0100
x86/Linux: reenable all-stop on top of non-stop
cat test.cpp <<EOH
#include <iostream>
int main(int argc, char** argv){
double rvalue = 0.3;
std::cout << "- " << rvalue << "\n";
double a,b;
rvalue = 0.3;
std::cout << ": " << rvalue << "\n";
return rvalue < 1. ? 0 : 1;
}
EOH
gdb -batch ./test -ex 'b 5' -ex r -ex step -ex 'p rvalue'
Actual results:
$1 = 7.0607433379231282e-184
Expected results:
$1 = 0.29999999
gdb -batch ./test -ex 'b 5' -ex r -ex stepi -ex 'p/x $xmm0' 2>&1|tee
/proc/self/fd/2|grep 0x3fd3333333333333
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Subject: [Bug exp/22487] `51-var-list-children var3` is not returning within
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Reproducibility requires gcc -avx:
g++ -mavx -g test.cpp
Verified with GDB GIT: 2b63c337d99fe12220e6ca12a71dac6cdd3224d3
gcc-7.2.1-2.fc27.x86_64
PASS: gdb-7.9
FAIL: gdb-8.0
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Subject: [Bug gdb/21945] Improve find command string search
Date: Mon, 27 Nov 2017 03:47:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ee9a09e959a5b7c152cc72028d4f6c879bc901c9
commit ee9a09e959a5b7c152cc72028d4f6c879bc901c9
Author: Dominik Czarnota <dominik.b.czarnota@gmail.com>
Date: Sun Nov 26 22:42:18 2017 -0500
Update find command help and search memory docs
This patch updates the `find` command help and docs description to show
how to search for not null terminated strings when current language's
strings includes it.
gdb/ChangeLog:
PR gdb/21945
* findcmd.c (_initialize_mem_search): Update find command help
text.
gdb/doc/ChangeLog:
PR gdb/21945
* gdb.texinfo (Search Memory): Update description and example
about how to search a string without NULL terminator.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22501] New: Incorrect sizeof(symbol) == 4 on a 64-bit
platform
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Bug ID: 22501
Summary: Incorrect sizeof(symbol) == 4 on a 64-bit platform
Product: gdb
Version: 7.12
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
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If I compile GLib normally on a 64-bit platform, without CFLAGS=-g, run a test
program, and `print sizeof(__glib_assert_msg)`, gdb (incorrectly) tells me it’s
4 bytes: However, it’s a char*, and its size according to objdump is
(correctly) 8 bytes:
(gdb) print sizeof(__glib_assert_msg)
$1 = 4
(gdb) print sizeof(char*)
$2 = 8
objdump -t ./glib/.libs/libglib-2.0.so.0.5400.2 | grep assert_msg
000000000032c3e0 g O .bss 0000000000000008
__glib_assert_msg
No debug information is being loaded while running gdb:
(gdb) info sharedlibrary
>From To Syms Read Shared Object Library
0x00007ffff7dd9aa0 0x00007ffff7df51b0 Yes /lib64/ld-linux-x86-64.so.2
0x00007ffff7ac6e90 0x00007ffff7b5ae90 Yes (*)
/tmp/build-snapshot.Ry9JWQsWNS/s/glib/.libs/libglib-2.0.so.0
0x00007ffff772c910 0x00007ffff7856423 Yes
/lib/x86_64-linux-gnu/libc.so.6
0x00007ffff749b5d0 0x00007ffff74edab1 Yes (*)
/lib/x86_64-linux-gnu/libpcre.so.3
0x00007ffff7282ab0 0x00007ffff728f811 Yes
/lib/x86_64-linux-gnu/libpthread.so.0
(*): Shared library is missing debugging information.
I can provide other information if needed.
---
This looks similar to bug #12281. The downstream GLib bug which triggered this
is https://bugzilla.gnome.org/show_bug.cgi?id=782057.
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Subject: [Bug gdb/22501] Incorrect sizeof(symbol) == 4 on a 64-bit platform
Date: Mon, 27 Nov 2017 11:45:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
The problem is that without debug info (-g), GDB can't know that
"__glib_assert_msg" is a "char *". And then, in all released versions,
if GDB doesn't know the type of the object, it assumes "int",
which has sizeof 4.
This assumption was recently removed in GDB master (soon-to-be gdb 8.1),
exactly because it's very confusing:
https://sourceware.org/ml/gdb-patches/2017-07/msg00137.html
specifically:
https://sourceware.org/ml/gdb-patches/2017-07/msg00150.html
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>From gdb-prs-return-22143-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 11:48:37 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/12281] Incorrect interpretation of returned point in 64 bit
platform
Date: Mon, 27 Nov 2017 11:48:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |palves at redhat dot com
Resolution|--- |FIXED
Target Milestone|--- |8.1
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
The problem is that without debug info (-g), GDB can't know the return type
of the function, And then, in all released versions, if GDB doesn't know the
type of the function, it assumes "int ()".
This assumption was recently removed in GDB master (soon-to-be gdb 8.1),
exactly because it's very confusing:
https://sourceware.org/ml/gdb-patches/2017-07/msg00137.html
specifically:
https://sourceware.org/ml/gdb-patches/2017-07/msg00150.html
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>From gdb-prs-return-22144-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 11:49:09 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug exp/12281] Incorrect interpretation of returned point in 64 bit
platform
Date: Mon, 27 Nov 2017 11:49:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
(In reply to Pedro Alves from comment #1)
> specifically:
> https://sourceware.org/ml/gdb-patches/2017-07/msg00150.html
I actually meant:
https://sourceware.org/ml/gdb-patches/2017-07/msg00139.html
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>From gdb-prs-return-22145-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 12:00:45 2017
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From: "bugzilla at tecnocode dot co.uk" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22501] Incorrect sizeof(symbol) == 4 on a 64-bit platform
Date: Mon, 27 Nov 2017 12:00:00 -0000
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--- Comment #2 from Philip Withnall <bugzilla at tecnocode dot co.uk> ---
(In reply to Pedro Alves from comment #1)
> The problem is that without debug info (-g), GDB can't know that
> "__glib_assert_msg" is a "char *". And then, in all released versions,
> if GDB doesn't know the type of the object, it assumes "int",
> which has sizeof 4.
>
> This assumption was recently removed in GDB master (soon-to-be gdb 8.1),
> exactly because it's very confusing:
> https://sourceware.org/ml/gdb-patches/2017-07/msg00137.html
> specifically:
> https://sourceware.org/ml/gdb-patches/2017-07/msg00150.html
I see, that explains things. I look forward to your patch series landing. Is
there a bug which this one should be duped to?
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>From gdb-prs-return-22146-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 12:06:14 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22501] Incorrect sizeof(symbol) == 4 on a 64-bit platform
Date: Mon, 27 Nov 2017 12:06:00 -0000
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
(In reply to Philip Withnall from comment #2)
> I see, that explains things. I look forward to your patch series landing.
It already landed a while ago. If you try out current master, you'll get an
error instead of "= 4".
> Is there a bug which this one should be duped to?
There probably is, though I haven't looked. This is a very frequent source of
confusion.
For sizeof in particular, I'm wondering whether it makes sense (or rather if it
could ever be a problem) for GDB to use/print the size as recorded in the ELF
symbol table, when it is available. That might be doable. (though I probably
won't be able to try it myself soon enough). Not sure it's worth the trouble,
though.
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>From gdb-prs-return-22147-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 18:37:58 2017
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From: "pflarr at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug python/22503] New: GDB uses PYTHONHOME environment variable,
but can't find the correct python environment.
Date: Mon, 27 Nov 2017 18:37:00 -0000
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Bug ID: 22503
Summary: GDB uses PYTHONHOME environment variable, but can't
find the correct python environment.
Product: gdb
Version: 7.6
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: python
Assignee: unassigned at sourceware dot org
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Target Milestone: ---
When running gdb with PYTHONHOME set to a custom python environment, gdb seems
to use that python but can't find the correct environment. The result, as
typical when python can't find its environment, is for python to fail on trying
to import the site module, giving the following error:
ImportError: No module named site
This appears to apply to all versions of gdb with python support.
The workaround is to run gdb with PYTHONHOME forced to the system python, such
as `$ PYTHONHOME=/usr gdb`. This isn't really good enough for us though, as
having non-system PYTHONHOME set is standard in our user build environments.
My guess at the fix is for gdb to ignore PYTHONHOME (and probably PYTHONPATH),
and always use the python it was built against. The python command line
provides a -E option to do exactly that, or you can unsetenv on PYTHONHOME
within gdb.
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>From gdb-prs-return-22148-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Nov 27 22:22:31 2017
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Subject: [Bug cli/16224] add "pahole" functionality to ptype
Date: Mon, 27 Nov 2017 22:22:00 -0000
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Joel Brobecker <brobecker at gnat dot com> changed:
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----------------------------------------------------------------------------
CC| |brobecker at gnat dot com
Target Milestone|--- |8.1
--- Comment #2 from Joel Brobecker <brobecker at gnat dot com> ---
Trying to aim for 8.1...
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>From gdb-prs-return-22150-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 28 14:56:41 2017
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Subject: [Bug breakpoints/22511] Regression in "commands"
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22511] New: Regression in "commands"
Date: Tue, 28 Nov 2017 14:56:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22511
Bug ID: 22511
Summary: Regression in "commands"
Product: gdb
Version: HEAD
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Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
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Filing this so we don't forget before the 8.1 release.
>From https://sourceware.org/ml/gdb-patches/2017-11/msg00088.html :
~~~
Pedro pointed out a regression in "commands", where trying to clear a
breakpoint's command list would fail:
(top-gdb) commands
Type commands for breakpoint(s) 3, one per line.
End with a line saying just "end".
>end
No breakpoints specified.
(top-gdb)
I believe the bug was introduced by my patch that changes
counted_command_line to be a shared_ptr. This causes the problem
because now the counted_command_line in commands_command_1 can be NULL,
whereas previously it never could be.
~~~
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>From gdb-prs-return-22151-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 28 17:08:58 2017
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
Date: Tue, 28 Nov 2017 17:08:00 -0000
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--- Comment #2 from Pedro Alves <palves at redhat dot com> ---
Confirmed, I can reproduce this.
With current master, "maint set target-non-stop off", which has the same effect
as reverting the offending patch, works around it.
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
Date: Tue, 28 Nov 2017 17:30:00 -0000
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--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
For some odd reason, "maint set target-non-stop on/off" makes a difference in
the value of $ymm0:
(gdb) info all-registers $ymm0
- ymm0 {v8_float = {0x0, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, ...
+ ymm0 {v8_float = {0x0, 0xfffffffb, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
...
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
hmm, I suspect that this is related to something odd with displaced stepping,
which is enabled by non-stop, because "set displaced off" alone also works
around it. Probably the inferior ends up executing the wrong instruction,
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>From gdb-prs-return-22154-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 28 18:07:14 2017
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Confirmed, the problem is that we displaced-step a RIP-relative instruction
that needs adjustment when relocated to the scratch pad:
0x00000000004007f5 <+15>: c5 fb 10 05 8b 01 00 00 vmovsd 0x18b(%rip),%xmm0
# 0x400988
... but GDB just copies it over to the scratch pad unmodified...
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>From gdb-prs-return-22155-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Nov 28 21:50:01 2017
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Subject: [Bug exp/22487] `51-var-list-children var3` is not returning within
10 seconds
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--- Comment #1 from Joshua Newcomb <17joshuanewcomb at gmail dot com> ---
And this is the GDB Traces output:
https://bugs.eclipse.org/bugs/attachment.cgi?id=271541
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>From gdb-prs-return-22156-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Nov 29 00:49:09 2017
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at sourceware dot org |palves at redhat dot com
--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
Patch posted:
https://sourceware.org/ml/gdb-patches/2017-11/msg00748.html
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Subject: [Bug gdb/19061] gdb-7.10 hangs/spins-on-cpu when debugging any
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--- Comment #7 from Tobias Klausmann <klausman-glibc at schwarzvogel dot de> ---
I *think* this may be fixed in gdb-8. I just checked out gdb-8.0.1-release from
git and I have been unable to reproduce the hang. I will keep using it for
everyday stuff and report back if anything breaks.
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https://sourceware.org/bugzilla/show_bug.cgi?id=22531
Bug ID: 22531
Summary: FAIL: gdb.base/async.exp & gdb.base/skip.exp
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: thopre01 at gcc dot gnu.org
Target Milestone: ---
Created attachment 10648
--> https://sourceware.org/bugzilla/attachment.cgi?id=10648&action=edit
Executable async and skip produced by GCC trunk
Hi,
The following tests fail on arm-none-eabi targets with debug info generated by
GCC post commit r254010:
PASS->FAIL: gdb.base/async.exp: nexti&
PASS->FAIL: gdb.base/async.exp: finish&
PASS->FAIL: gdb.base/skip.exp: step after disabling 3: step 3
PASS->FAIL: gdb.base/skip.exp: step after disabling 3: step 5
PASS->FAIL: gdb.base/skip.exp: step using -fu for baz: step 3
PASS->FAIL: gdb.base/skip.exp: step using -fu for baz: step 5
PASS->FAIL: gdb.base/skip.exp: step using -rfu for baz: step 3
PASS->FAIL: gdb.base/skip.exp: step using -rfu for baz: step 5
GCC was configured as: --target=arm-none-eabi --with-newlib --with-mode=thumb
--with-cpu=cortex-m3
The 2 async tests fail because the addresses are missing:
-(gdb) 0x00008172 9 x = 5; x = 5; x = 5;
+(gdb) 9 x = 5; x = 5; x = 5;
-Run till exit from #0 0x00008172 in foo ()
+Run till exit from #0 foo ()
The skip tests fail because the wrong line is shown by gdb after doing step.
This bug was already reported against GCC (PR83199) and was triaged as being a
GDB issue.
Attached are the async and skip binary produced by GCC.
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Subject: [Bug server/22137] gdbserver crashes on hosts with pkru register
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/19436] C++11 ABI tag does not work
Date: Wed, 29 Nov 2017 19:49:00 -0000
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--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=bd69330db86b2367aac8aac5915f1686451c9d5d
commit bd69330db86b2367aac8aac5915f1686451c9d5d
Author: Pedro Alves <palves@redhat.com>
Date: Wed Nov 29 19:33:24 2017 +0000
Breakpoints in symbols with ABI tags (PR c++/19436)
Trying to set a breakpoint in a function with an ABI tag does not work
currently. E.g., debugging gdb itself, we see this with the
"string_printf" function:
(top-gdb) b string_print [TAB]
(top-gdb) b string_printf[abi:cxx11](char const*, ...) [RET]
No source file named string_printf[abi.
Make breakpoint pending on future shared library load? (y or [n])
Quoting doesn't help:
(top-gdb) b 'string_printf[abi:cxx11]'(char const*, ...)
malformed linespec error: unexpected string, "(char const*, ...)"
(top-gdb) b 'string_printf[abi:cxx11](char const*, ...)'
No source file named string_printf[abi.
Make breakpoint pending on future shared library load? (y or [n]) n
This patch fixes this, and takes it a bit further.
The actual symbol name as demangled by libiberty's demangler is really
string_printf[abi:cxx11](char const*, ...)
however, this patch makes it possible to set the breakpoint with
string_printf(char const*, ...)
too. I.e., ignoring the ABI tag.
And to match, it teaches the completer to complete the symbol name
without the ABI tag, i.e.,
"string_pri<TAB>" -> "string_printf(char const*, ...)"
If however, you really want to break on a symbol with the tag, then
you simply start writing the tag, and GDB will preserve it, like:
"string_printf[a<TAB>" -> "string_printf[abi:cxx11](char const*, ...)"
Grows the gdb.linespec/ tests like this:
-# of expected passes 8977
+# of expected passes 9176
gdb/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
PR c++/19436
* NEWS: Mention setting breakpoints on functions with C++ ABI
tags.
* completer.h (completion_match_for_lcd) <match,
mark_ignored_range>: New methods.
<finish>: Consider ignored ranges.
<clear>: Clear ignored ranges.
<m_ignored_ranges, m_finished_storage>: New fields.
* cp-support.c (cp_search_name_hash): Ignore ABI tags.
(cp_symbol_name_matches_1, cp_fq_symbol_name_matches): Pass the
completion_match_for_lcd pointer to strncmp_iw_with_mode.
(test_cp_symbol_name_cmp): Add [abi:...] tags unit tests.
* language.c (default_symbol_name_matcher): Pass the
completion_match_for_lcd pointer to strncmp_iw_with_mode.
* linespec.c (linespec_lexer_lex_string): Don't tokenize ABI tags.
* utils.c (skip_abi_tag): New function.
(strncmp_iw_with_mode): Add completion_match_for_lcd parameter.
Handle ABI tags.
* utils.h (strncmp_iw_with_mode): Add completion_match_for_lcd
parameter.
gdb/testsuite/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
PR c++/19436
* gdb.linespec/cpls-abi-tag.cc: New file.
* gdb.linespec/cpls-abi-tag.exp: New file.
gdb/doc/ChangeLog:
2017-11-29 Pedro Alves <palves@redhat.com>
PR c++/19436
* gdb.texinfo (Debugging C Plus Plus): Document setting
breakpoints in functions with ABI tags.
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Subject: [Bug c++/16874] Setting a breakpoint on function in anonymous
namespace is unnecessarily awkward
Date: Wed, 29 Nov 2017 20:04:00 -0000
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--- Comment #15 from Pedro Alves <palves at redhat dot com> ---
The series above is finally all merged to master. These are the related
improvements that you'll find there:
* Completion improvements
** GDB can now complete function parameters in linespecs and
explicit locations without quoting. When setting breakpoints,
quoting around functions names to help with TAB-completion is
generally no longer necessary. For example, this now completes
correctly:
(gdb) b function(in[TAB]
(gdb) b function(int)
Related, GDB is no longer confused with completing functions in
C++ anonymous namespaces:
(gdb) b (anon[TAB]
(gdb) b (anonymous namespace)::[TAB][TAB]
(anonymous namespace)::a_function()
(anonymous namespace)::b_function()
** GDB now has much improved linespec and explicit locations TAB
completion support, that better understands what you're
completing and offers better suggestions. For example, GDB no
longer offers data symbols as possible completions when you're
setting a breakpoint.
** GDB now TAB-completes label symbol names.
** The "complete" command now mimics TAB completion accurately.
* Breakpoints on C++ functions are now set on all scopes by default
By default, breakpoints on functions/methods are now interpreted as
specifying all functions with the given name ignoring missing
leading scopes (namespaces and classes).
For example, assuming a C++ program with symbols named:
A::B::func()
B::func()
both commands "break func()" and "break B::func()" set a breakpoint
on both symbols.
You can use the new flag "-qualified" to override this. This makes
GDB interpret the specified function name as a complete
fully-qualified name instead. For example, using the same C++
program, the "break -q B::func" command sets a breakpoint on
"B::func", only.
* Breakpoints on functions marked with C++ ABI tags
GDB can now set breakpoints on functions marked with C++ ABI tags
(e.g., [abi:cxx11]). See here for a description of ABI tags:
https://developers.redhat.com/blog/2015/02/05/gcc5-and-the-c11-abi/
Functions with a C++11 abi tag are demangled/displayed like this:
function[abi:cxx11](int)
^^^^^^^^^^^
You can now set a breakpoint on such functions simply as if they had
no tag, like:
(gdb) b function(int)
Or if you need to disambiguate between tags, like:
(gdb) b function[abi:other_tag](int)
Tab completion was adjusted accordingly as well.
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/19436] C++11 ABI tag does not work
Date: Wed, 29 Nov 2017 20:18:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #6 from Pedro Alves <palves at redhat dot com> ---
"print" (In reply to Jan Kratochvil from comment #0)
> It affects default configuration of latest stable release of GCC.
>
>
>
> echo -e '#include <string>\nstd::string foovar;'|g++ -c -o 20.o -Wall -g -x
> c++ -;nm -C 20.o|grep -w foovar
> 0000000000000000 B foovar[abi:cxx11]
> gdb -batch ./20.o -ex "p foovar" -ex "p 'foovar[abi:cxx11]'"
This now works in master:
gdb -batch ./20.o -ex "p foovar" -ex "p 'foovar[abi:cxx11]'"
$1 = ""
$2 = ""
which turns out to be a happy consequence of the commit listed above.
I'm leaving the bug open because while bd69330db86b added comprehensive tests
for breakpoints-on-symbols-with-abi-tags, it added none for print/expressions.
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From: "dmalcolm at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/16874] Setting a breakpoint on function in anonymous
namespace is unnecessarily awkward
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--- Comment #16 from Dave Malcolm <dmalcolm at redhat dot com> ---
(In reply to Pedro Alves from comment #15)
> The series above is finally all merged to master. These are the related
> improvements that you'll find there:
[...]
Thanks for the improvements!
> * Breakpoints on C++ functions are now set on all scopes by default
>
> By default, breakpoints on functions/methods are now interpreted as
> specifying all functions with the given name ignoring missing
> leading scopes (namespaces and classes).
>
> For example, assuming a C++ program with symbols named:
>
> A::B::func()
> B::func()
>
> both commands "break func()" and "break B::func()" set a breakpoint
> on both symbols.
To clarify, if there is a symbol:
(anonymous namespace)::func()
will "break func" set a breakpoint on it? (without me having to type or
tab-complete the "(anonymous namespace)" part?)
[...]
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To: gdb-prs@sourceware.org
Subject: [Bug c++/16874] Setting a breakpoint on function in anonymous
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--- Comment #17 from Pedro Alves <palves at redhat dot com> ---
(In reply to Dave Malcolm from comment #16)
> (In reply to Pedro Alves from comment #15)
> > The series above is finally all merged to master. These are the related
> > improvements that you'll find there:
>
> [...]
>
> Thanks for the improvements!
My pleasure! Making things better for GCC folks was one of my
sekrit driving forces. :-)
> To clarify, if there is a symbol:
>
> (anonymous namespace)::func()
>
> will "break func" set a breakpoint on it? (without me having to type or
> tab-complete the "(anonymous namespace)" part?)
>
> [...]
Yes.
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>From gdb-prs-return-22165-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Nov 30 10:51:23 2017
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Subject: [Bug testsuite/22091] PASS->FAIL: gdb.arch/thumb2-it.exp
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Thomas Preud'homme <thopre01 at gcc dot gnu.org> changed:
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--- Comment #5 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Fixed on trunk as of 8f8f815255bf36800cdfff93fd88a62aaa39ce16
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Subject: [Bug gdb/20818] PASS->FAIL: gdb.base/ptype.exp: ptype old_fptr
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Thomas Preud'homme <thopre01 at gcc dot gnu.org> changed:
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--- Comment #1 from Thomas Preud'homme <thopre01 at gcc dot gnu.org> ---
Now passing on trunk.
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>From gdb-prs-return-22167-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 01 15:35:00 2017
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Subject: [Bug breakpoints/22511] Regression in "commands"
Date: Fri, 01 Dec 2017 15:35:00 -0000
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Tom Tromey <tromey at sourceware dot org> changed:
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Assignee|unassigned at sourceware dot org |tromey at sourceware dot org
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>From gdb-prs-return-22168-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 01 20:34:24 2017
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Subject: [Bug exp/22487] `51-var-list-children var3` is not returning within
10 seconds
Date: Fri, 01 Dec 2017 20:34:00 -0000
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--- Comment #2 from Joshua Newcomb <17joshuanewcomb at gmail dot com> ---
Created attachment 10656
--> https://sourceware.org/bugzilla/attachment.cgi?id=10656&action=edit
Test Case program
Here's a test case that causes GDB MI to have a problem, at least in Eclipse
Latest.
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>From gdb-prs-return-22169-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Dec 03 18:28:28 2017
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From: "francois.court at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug c++/22541] New: Gdb crashes on variadic templates
Date: Sun, 03 Dec 2017 18:28:00 -0000
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Bug ID: 22541
Summary: Gdb crashes on variadic templates
Product: gdb
Version: 7.6
Status: UNCONFIRMED
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Priority: P2
Component: c++
Assignee: unassigned at sourceware dot org
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Created attachment 10660
--> https://sourceware.org/bugzilla/attachment.cgi?id=10660&action=edit
crashing and non crashing version of test exec
**Windows
10 Pro x64 version 1703 build 15063.608
**gcc
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=D:/Dev/Codeblocks/MinGW/bin/../libexec/gcc/mingw32/4.9.2/lto-wrapper.exe
Target: mingw32
Configured with: ../../../src/gcc-4.9.2/configure --build=mingw32
--enable-languages=ada,c,c++,fortran,lto,objc,obj-c++ --enable-libgomp
--enable-lto --enable-graphite --enable-libstdcxx-debug --enable-threads=posix
--enable-version-specific-runtime-libs --enable-fully-dynamic-string
--enable-libstdcxx-threads --enable-libstdcxx-time --with-gnu-ld
--disable-werror --disable-nls --disable-win32-registry --disable-symvers
--enable-cxx-flags='-fno-function-sections -fno-data-sections
-DWINPTHREAD_STATIC' --prefix=/mingw32tdm --with-local-prefix=/mingw32tdm
--with-pkgversion=tdm-1 --enable-sjlj-exceptions
--with-bugurl=http://tdm-gcc.tdragon.net/bugs
Thread model: posix
gcc version 4.9.2 (tdm-1)
**ld -v
GNU ld (GNU Binutils) 2.24
**IDE
Codeblocks 16.01
Build Jan 25 2016 - wx2.8.12- 32bit
**gdb
GNU gdb (GDB) 7.6.1
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "mingw32".
**Description
gdb crashes loading symbols; the same executable loads and debugs well when the
inclusion of a variadic template call is replaced by its non-variadic
equivalent.
Attached are the two versions of the exec, the one crashing and the other fine
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>From gdb-prs-return-22170-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 04 16:19:42 2017
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
Date: Mon, 04 Dec 2017 16:19:00 -0000
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--- Comment #7 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=50a1fdd59c1777672a9be0e81fe2301c2a115fce
commit 50a1fdd59c1777672a9be0e81fe2301c2a115fce
Author: Pedro Alves <palves@redhat.com>
Date: Mon Dec 4 15:59:20 2017 +0000
Fix displaced-stepping RIP-relative VEX-encoded instructions (AVX) (PR
gdb/22499)
PR gdb/22499 is about a latent bug exposed by the switch to "maint set
target-non-stop on" by default on x86-64 GNU/Linux, a while ago. With
that on, GDB is also preferring to use displaced-stepping by default.
The testcase in the bug is failing because GDB ends up incorrectly
displaced-stepping over a RIP-relative VEX-encoded instruction, like
this:
0x00000000004007f5 <+15>: c5 fb 10 05 8b 01 00 00 vmovsd
0x18b(%rip),%xmm0 # 0x400988
While RIP-relative instructions need adjustment when relocated to the
scratch pad, GDB ends up just copying VEX-encoded instructions to the
scratch pad unmodified, with the end result that the inferior ends up
executing an instruction that fetches/writes memory from the wrong
address...
This patch teaches GDB about the VEX-encoding prefixes, fixing the
problem, and adds a testcase that fails without the GDB fix.
I think we may need a similar treatment for EVEX-encoded instructions,
but I didn't address that simply because I couldn't find any
EVEX-encoded RIP-relative instruction in the gas testsuite. In any
case, this commit is forward progress as-is already.
gdb/ChangeLog:
2017-12-04 Pedro Alves <palves@redhat.com>
PR gdb/22499
* amd64-tdep.c (amd64_insn::rex_offset): Rename to...
(amd64_insn::enc_prefix_offset): ... this, and tweak comment.
(vex2_prefix_p, vex3_prefix_p): New functions.
(amd64_get_insn_details): Adjust to rename. Also skip VEX2 and
VEX3 prefixes.
(fixup_riprel): Set VEX3.!B.
gdb/testsuite/ChangeLog:
2017-12-04 Pedro Alves <palves@redhat.com>
PR gdb/22499
* gdb.arch/amd64-disp-step-avx.S: New file.
* gdb.arch/amd64-disp-step-avx.exp: New file.
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>From gdb-prs-return-22171-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 04 16:21:50 2017
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Subject: [Bug gdb/22499] 8.0 regression: wrongly read $xmm0
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--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
Fixed.
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>From gdb-prs-return-22172-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 04 16:54:48 2017
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Subject: [Bug python/22475] Python API: breakpoint subclass: GDB crashes if
function called through parse_and_eval() exits
Date: Mon, 04 Dec 2017 16:54:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|8.1 |---
--- Comment #3 from Yao Qi <qiyao at gcc dot gnu.org> ---
Clear the target milestone.
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>From gdb-prs-return-22173-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 04 17:18:20 2017
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Subject: [Bug rust/22545] New: add inclusive range syntax to rust
Date: Mon, 04 Dec 2017 17:18:00 -0000
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Bug ID: 22545
Summary: add inclusive range syntax to rust
Product: gdb
Version: HEAD
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Rust is getting syntax for an inclusive range, see
https://github.com/rust-lang/rust/issues/28237
At some point (I'm generally not sure if this sort of thing should
be done when the feature stabilizes, or earlier), this should
be added to rust-exp.y.
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>From gdb-prs-return-22174-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 05 00:47:12 2017
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Tue, 05 Dec 2017 00:47:00 -0000
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--- Comment #8 from Chris Friedt <chrisfriedt at gmail dot com> ---
#sadface :(
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>From gdb-prs-return-22175-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 05 11:55:46 2017
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Subject: [Bug gdb/20981] Dynamic library debugging on MacOS X 10.12 (Sierra)
and dyld 15 is broken
Date: Tue, 05 Dec 2017 11:55:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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CC| |palves at redhat dot com
--- Comment #9 from Pedro Alves <palves at redhat dot com> ---
The simple hard fact is that unfortunately the macOS/Darwin port isn't really
getting much attention. Most gdb devs tend to run/focus on GNU/Linux.
We need someone motivated to actually dig in to the sources, study the issue in
detail, and fix the issue. Who knows, maybe end up becoming port maintainer.
:-)
This could be you!
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>From gdb-prs-return-22176-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 13:20:58 2017
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Subject: [Bug gdb/22556] New: Regression: gdb.threads/names.exp with
--target_board=native-gdbserver
Date: Wed, 06 Dec 2017 13:20:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22556
Bug ID: 22556
Summary: Regression: gdb.threads/names.exp with
--target_board=native-gdbserver
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
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I've seeing an odd regression in gdb.threads/names.exp (at least) when testing
against --target_board=native-gdbserver
~~~
Thread 1 "main" hit Breakpoint 1, all_threads_ready () at
src/gdb/testsuite/gdb.threads/names.c:51
51 }
(gdb) info threads
Id Target Id Frame
* 1 Thread 4090.4090 "main" () all_threads_ready () at
/home/pedro/gdb/mygit/cxx-convertion/src/gdb/testsuite/gdb.threads/names.c:51
2 Thread 4090.4093 "carrot" () pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
3 Thread 4090.4094 "potato" () pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
4 Thread 4090.4095 "celery" () pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
(gdb) FAIL: gdb.threads/names.exp: list threads
~~~
Notice the spurious "()" in
"main" () all_threads_ready ()
^^
Testing against the native target doesn't show that:
(gdb) info threads
Id Target Id Frame
* 1 Thread 0x7ffff7fc1700 (LWP 4439) "main" all_threads_ready () at
/home/pedro/gdb/mygit/cxx-convertion/src/gdb/testsuite/gdb.threads/names.c:51
2 Thread 0x7ffff74fa700 (LWP 4443) "carrot" pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
3 Thread 0x7ffff6cf9700 (LWP 4444) "potato" pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
4 Thread 0x7ffff64f8700 (LWP 4445) "celery" pthread_barrier_wait () at
../sysdeps/unix/sysv/linux/x86_64/pthread_barrier_wait.S:71
(gdb) PASS: gdb.threads/names.exp: list threads
Seems recent-ish -- I don't see the failure in the logs of a testrun from Oct
19.
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Subject: [Bug gdb/22556] Regression: gdb.threads/names.exp with
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Date: Wed, 06 Dec 2017 13:22:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Setting milestone so we don't forget. (I'm not looking at this right now.)
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>From gdb-prs-return-22178-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 13:28:26 2017
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Subject: [Bug gdb/22557] New: Regression: gdb.base/dtrace-probe.exp with
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Date: Wed, 06 Dec 2017 13:28:00 -0000
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Bug ID: 22557
Summary: Regression: gdb.base/dtrace-probe.exp with
--target_board=native-gdbserver
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
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With --target_board=native-gdbserver, I'm seeing this regression compared to a
run on 20171018:
Breakpoint 5, 0x00000000004005d2 in main ()
(gdb) PASS: gdb.base/dtrace-probe.exp: continue to breakpoint:
test:progress-counter
print $_probe_argc
$1 = 2
(gdb) PASS: gdb.base/dtrace-probe.exp: print $_probe_argc for probe
progress-counter
print $_probe_arg0
$2 = 4195968
(gdb) FAIL: gdb.base/dtrace-probe.exp: print $_probe_arg0 for probe
progress-counter
This is with 846fefbdb228, meaning I still see this after commit 685de8c2990a
("Fix PR gdb/22491: Regression when setting SystemTap probe semaphores").
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>From gdb-prs-return-22180-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 13:31:05 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
Date: Wed, 06 Dec 2017 13:31:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22557
Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Regression: |Regression:
|gdb.base/dtrace-probe.exp |gdb.base/dtrace-probe.exp
|with |
|--target_board=native-gdbse |
|rver |
--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Actually I see it too with the native target.
I suspect this is more fall out from the probe C++ification. (Just a guess,
I'm not really looking at it.)
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>From gdb-prs-return-22181-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 13:43:29 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug shlibs/22558] New: Should make "nosharedlibrary" accept a
regexp too
Date: Wed, 06 Dec 2017 13:43:00 -0000
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Bug ID: 22558
Summary: Should make "nosharedlibrary" accept a regexp too
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- "sharedlibrary" accepts a regexp to load the symbols of specific libraries.
- "nosharedlibrary" ignore any argument and always unloads symbols of all
libraries.
It'd be handy/nice if "nosharedlibrary" also accepted a pattern.
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>From gdb-prs-return-22182-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 16:29:46 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22560] New: Avoid IPA interfering with regular
breakpoints/debugging
Date: Wed, 06 Dec 2017 16:29:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22560
Bug ID: 22560
Summary: Avoid IPA interfering with regular
breakpoints/debugging
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: palves at redhat dot com
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As shown in <https://sourceware.org/ml/gdb-patches/2017-12/msg00123.html>, the
IPA is nowadays using standard C++ types like std::vector/std::string and maybe
others, which can conflict with regular debugging.
See example at the bottom.
Having regular debugging interfere with the IPAs internal operations is not
ideal, of course. Pondering about this at least a few ideas came up:
#1 - maybe we could somehow make GDB just not set user breakpoints in the IPA
(at least by default). Maybe add a new "do not debug me" attribute to shared
libraries, and then have gdbserver report it for the IPA dso. (To avoid
hardcoding the name of the IPA library in GDB). This would make GDB not set
breakpoints on inlined standard C++ functions/methods, but it wouldn't prevent
running into breakpoints for calls to non-inlined standard functions/methods.
(i.e., it'd prevent running into std::vector::end if that's inlined, but not to
std::string::whatever if it's not inlined.)
#2 - just try harder to avoid calling into the C/C++ runtime in all the code
transitively called by gdb_collect.
#3 - Make sure the IPA is fully stripped, except for the symbols that it must
export for fast tracepoint functionality (the symbols that gdbserver must
locate in the agent. Avoid calling into potentially non-inlined C/C++ runtime
functions.
Maybe solution #3 is the easiest.
Thread 1 "ftrace" hit Breakpoint 1, main () at
gdb/testsuite/gdb.trace/ftrace.c:50
50 begin ();
(gdb) b end
Breakpoint 2 at 0x40069b: end. (12 locations)
(gdb) ftrace set_point
Fast tracepoint 3 at 0x40068b: file src/gdb/testsuite/gdb.trace/ftrace.c,
line 29.
(gdb) tstart
(gdb) c
Continuing.
Thread 1 "ftrace" hit Breakpoint 2, std::vector<reg*, std::allocator<reg*>
>::end (this=0x613e00) at /usr/include/c++/5.3.1/bits/stl_vector.h:566
566 { return iterator(this->_M_impl._M_finish); }
(gdb) bt
#0 0x00007ffff7b10bc0 in std::vector<reg*, std::allocator<reg*> >::end()
(this=0x613e00) at /usr/include/c++/5.3.1/bits/stl_vector.h:566
#1 0x00007ffff7b1082c in init_target_desc(target_desc*) (tdesc=0x613e00) at
src/gdb/gdbserver/tdesc.c:27
#2 0x00007ffff7b14048 in amd64_linux_read_description(unsigned long, bool)
(xcr0=7, is_x32=false)
at src/gdb/gdbserver/linux-x86-tdesc.c:127
#3 0x00007ffff7b13e0b in get_ipa_tdesc(int) (idx=2) at
src/gdb/gdbserver/linux-amd64-ipa.c:208
#4 0x00007ffff7b12d87 in gdb_collect(tracepoint*, unsigned char*)
(tpoint=0x7ffff65c6010, regs=0x7fffffffd830 "\213\006@")
at src/gdb/gdbserver/tracepoint.c:5800
#5 0x000000004000007a in ()
#6 0x00007ffff65c6010 in ()
#7 0x00007ffff7fbf740 in ()
#8 0x0000003100000007 in ()
#9 0x000000000040068b in marker (anarg=32767) at
src/gdb/testsuite/gdb.trace/ftrace.c:28
#10 0x00000000004006c3 in main () at src/gdb/testsuite/gdb.trace/ftrace.c:54
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>From gdb-prs-return-22183-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 16:41:03 2017
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From: "alexanderhochbaum at web dot de" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/21100] clang follow-fork-mode child internal-error
Date: Wed, 06 Dec 2017 16:41:00 -0000
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alexanderhochbaum at web dot de changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |alexanderhochbaum at web dot de
--- Comment #2 from alexanderhochbaum at web dot de ---
I have the same internal error but don't know how to easily backtrace gdb
itself. So I can not see where it came from. In many locations the argument to
delete_breakpoint is checked before the call. Perhaps someone who knows the
code can confirm this is not necessary for
delete_breakpoint (ps_data->jit_breakpoint);
in #7 0x00000000006c2115 in free_objfile_data (objfile=0x39895b0,
data=0x324b340) at jit.c:1491
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>From gdb-prs-return-22184-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 06 19:35:00 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/22562] New: investigate linespec issues with rust
Date: Wed, 06 Dec 2017 19:34:00 -0000
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Bug ID: 22562
Summary: investigate linespec issues with rust
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Ted reported this behavior from gdb 8.0:
(gdb) info line webrender::resource_cache::ResourceCache::update_resources
Line 274 of
"/builds/worker/workspace/build/src/gfx/webrender/src/resource_cache.rs"
starts at address 0x7fffe8c413e0
<webrender::resource_cache::ResourceCache::update_resources>
and ends at 0x7fffe8c41413
<webrender::resource_cache::ResourceCache::update_resources+51>.
(gdb) disassemble /m webrender::resource_cache::ResourceCache::update_resources
No type "resource_cache" within class or namespace "webrender".
Quoting the symbol name made it work ok:
(gdb) disassemble /m
*'webrender::resource_cache::ResourceCache::update_resources'
Dump of assembler code for function
webrender::resource_cache::ResourceCache::update_resources:
99 fn remove(&mut self, key: ImageKey) -> Option<ImageResource> {
0x00007fffe8c41da9 <+2505>: mov %r10,%r8
0x00007fffe8c41dac <+2508>: shr $0x20,%r8
So perhaps some kind of linespec work is needed for Rust.
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>From gdb-prs-return-22185-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 01:13:00 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 01:12:00 -0000
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Adam Stylinski <kungfujesus06 at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|8.0 |8.0.1
--- Comment #13 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Still seeing this bug on 8.0.1
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>From gdb-prs-return-22186-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 11:50:23 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 11:50:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |palves at redhat dot com
--- Comment #14 from Pedro Alves <palves at redhat dot com> ---
Sounds like this is the same as Bug 22499 which I just fixed (in master) last
week [1]. Any chance you could try out the master branch?
[1] https://sourceware.org/ml/gdb-patches/2017-11/msg00748.html
The workaround for current GB is "set displaced-stepping off".
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>From gdb-prs-return-22187-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 15:05:55 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22567] New: pending breakpoint location's gdbarch
is incorrect after it is resolved
Date: Thu, 07 Dec 2017 15:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22567
Bug ID: 22567
Summary: pending breakpoint location's gdbarch is incorrect
after it is resolved
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: qiyao at gcc dot gnu.org
Target Milestone: ---
In gdb mainline (8.0.50.20171207), start gdb without executable, set a pending
breakpoint, load the executable, and run,
(gdb) b set_point1
No symbol table is loaded. Use the "file" command.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (set_point1) pending.
(gdb) file ./testsuite/outputs/gdb.trace/pending/pending
Reading symbols from ./testsuite/outputs/gdb.trace/pending/pending...done.
(gdb) b main
Breakpoint 2 at 0x4007c5: file
/home/yao.qi/SourceCode/gnu/build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.trace/pending.c,
line 28.
(gdb) r
Starting program:
/home/yao.qi/SourceCode/gnu/build/gdb/testsuite/outputs/gdb.trace/pending/pending
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff63b5700 (LWP 24579)]
Thread 1 "pending" hit Breakpoint 2, Python Exception <type
'exceptions.NameError'> Installation error: gdb.execute_unwinders function is
missing:
main () at
/home/yao.qi/SourceCode/gnu/build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.trace/pending.c:28
28 const char *libname = "pendshr2.sl";
(gdb) info breakpoints
Num Type Disp Enb Address What
1 breakpoint keep y 0xf7bd569e <pendfunc+7>
^^^^^^^^^^
2 breakpoint keep y 0x00000000004007c5 in main
at
/home/yao.qi/SourceCode/gnu/build/gdb/testsuite/../../../binutils-gdb/gdb/testsuite/gdb.trace/pending.c:28
breakpoint already hit 1 time
(gdb) p set_point1
$1 = {<text variable, no debug info>} 0x7ffff7bd569e <pendfunc+7>
As we can see, the address of breakpoint 1 is wrong.
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>From gdb-prs-return-22188-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 15:08:47 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22567] pending breakpoint location's gdbarch is
incorrect after it is resolved
Date: Thu, 07 Dec 2017 15:08:00 -0000
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Yao Qi <qiyao at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |x86_64-pc-linux-gnu
Status|NEW |ASSIGNED
Host| |x86_64-pc-linux-gnu
Assignee|unassigned at sourceware dot org |qiyao at gcc dot gnu.org
Target Milestone|--- |8.1
--- Comment #1 from Yao Qi <qiyao at gcc dot gnu.org> ---
GDB 8.0 is correct, so it is a regression.
(gdb) b set_point1
No symbol table is loaded. Use the "file" command.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (set_point1) pending.
(gdb) file ./testsuite/outputs/gdb.trace/pending/pending
Reading symbols from ./testsuite/outputs/gdb.trace/pending/pending...done.
(gdb) b main
Breakpoint 2 at 0x4007c5: file
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c,
line 28.
(gdb) run
Starting program:
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/outputs/gdb.trace/pending/pending
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
Python Exception <type 'exceptions.NameError'> Installation error:
gdb.execute_unwinders function is missing:
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff63b2700 (LWP 24608)]
Thread 1 "pending" hit Breakpoint 2, Python Exception <type
'exceptions.NameError'> Installation error: gdb.execute_unwinders function is
missing:
main ()
at
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c:28
28 const char *libname = "pendshr2.sl";
(gdb) info breakpoints
Num Type Disp Enb Address What
1 breakpoint keep y 0x00007ffff7bd569e <pendfunc+7>
^^^^^^^^^^^^^^^^^^
2 breakpoint keep y 0x00000000004007c5 in main
at
/home/yao.qi/SourceCode/gnu/gdb-8/build-8.0/gdb/testsuite/../../../gdb-8.0/gdb/testsuite/gdb.trace/pending.c:28
breakpoint already hit 1 time
(gdb) p set_point1
$1 = {<text variable, no debug info>} 0x7ffff7bd569e <pendfunc+7>
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>From gdb-prs-return-22189-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 15:14:11 2017
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 15:14:00 -0000
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--- Comment #15 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Pedro Alves from comment #14)
> Sounds like this is the same as Bug 22499 which I just fixed (in master)
> last week [1]. Any chance you could try out the master branch?
>
> [1] https://sourceware.org/ml/gdb-patches/2017-11/msg00748.html
>
> The workaround for current GB is "set displaced-stepping off".
Sure, can you send me a link to the repo?
Your workaround seems to be correct, so there's a good chance your fix will
work:
(gdb) set displaced-stepping off
(gdb) r
Starting program: /home/adam/test.out
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0, gz=0x0)
at test.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb) n
lambda = 0.031557
14 }
(gdb) n
main () at test.cpp:21
21 return 0;
(gdb) n
22 }
(gdb)
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>From gdb-prs-return-22190-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 15:56:20 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 15:56:00 -0000
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--- Comment #16 from Pedro Alves <palves at redhat dot com> ---
(In reply to Adam Stylinski from comment #15)
> Sure, can you send me a link to the repo?
https://sourceware.org/gdb/current/
> Your workaround seems to be correct, so there's a good chance your fix will
> work:
Awesome, that's a very good indication indeed.
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22567] pending breakpoint location's gdbarch is
incorrect after it is resolved
Date: Thu, 07 Dec 2017 16:13:00 -0000
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--- Comment #2 from Yao Qi <qiyao at gcc dot gnu.org> ---
git bisect find this commit,
commit 4024cf2b8d864279ff87af1a2ade77ab6d710d50
Author: Pedro Alves <palves@redhat.com>
Date: Wed Nov 29 19:25:58 2017 +0000
Fix setting-breakpoints regression on PPC64 (function descriptors)
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 16:14:00 -0000
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--- Comment #17 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Pedro Alves from comment #16)
> (In reply to Adam Stylinski from comment #15)
>
> > Sure, can you send me a link to the repo?
>
> https://sourceware.org/gdb/current/
>
> > Your workaround seems to be correct, so there's a good chance your fix will
> > work:
>
> Awesome, that's a very good indication indeed.
Hmm, getting a build error:
target-descriptions.c: In member function ‘virtual void
print_c_tdesc::visit_pre(const target_desc*)’:
target-descriptions.c:1836:16: error: types may not be defined in a
for-range-declaration [-Werror]
for (const struct bfd_arch_info *compatible : e->compatible)
^~~~~~
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 16:40:00 -0000
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--- Comment #18 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Adam Stylinski from comment #17)
> (In reply to Pedro Alves from comment #16)
> > (In reply to Adam Stylinski from comment #15)
> >
> > > Sure, can you send me a link to the repo?
> >
> > https://sourceware.org/gdb/current/
> >
> > > Your workaround seems to be correct, so there's a good chance your fix will
> > > work:
> >
> > Awesome, that's a very good indication indeed.
>
> Hmm, getting a build error:
>
> target-descriptions.c: In member function ‘virtual void
> print_c_tdesc::visit_pre(const target_desc*)’:
> target-descriptions.c:1836:16: error: types may not be defined in a
> for-range-declaration [-Werror]
> for (const struct bfd_arch_info *compatible : e->compatible)
> ^~~~~~
I think I may have fixed this build error, modified the type to be something
that was already declared as a type (const bfd_arch_info_type*). My guess is
at some point this struct was typedef'd to this and meant to be used this way.
I'll let you know if this version fixes it.
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From: "kungfujesus06 at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 16:50:00 -0000
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--- Comment #19 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
(In reply to Adam Stylinski from comment #18)
> (In reply to Adam Stylinski from comment #17)
> > (In reply to Pedro Alves from comment #16)
> > > (In reply to Adam Stylinski from comment #15)
> > >
> > > > Sure, can you send me a link to the repo?
> > >
> > > https://sourceware.org/gdb/current/
> > >
> > > > Your workaround seems to be correct, so there's a good chance your fix will
> > > > work:
> > >
> > > Awesome, that's a very good indication indeed.
> >
> > Hmm, getting a build error:
> >
> > target-descriptions.c: In member function ‘virtual void
> > print_c_tdesc::visit_pre(const target_desc*)’:
> > target-descriptions.c:1836:16: error: types may not be defined in a
> > for-range-declaration [-Werror]
> > for (const struct bfd_arch_info *compatible : e->compatible)
> > ^~~~~~
>
> I think I may have fixed this build error, modified the type to be something
> that was already declared as a type (const bfd_arch_info_type*). My guess
> is at some point this struct was typedef'd to this and meant to be used this
> way. I'll let you know if this version fixes it.
adam@eggsbenedict ~/scratch/binutils-gdb/gdb $ ./gdb ~/test.out
Exception caught while booting Guile.
Error in function "open-file":
No such file or directory: "/usr/share/gdb/guile/gdb/boot.scm"
./gdb: warning: Could not complete Guile gdb module initialization from:
/usr/share/gdb/guile/gdb/boot.scm.
Limited Guile support is available.
Suggest passing --data-directory=/path/to/gdb/data-directory.
GNU gdb (GDB) 8.0.50.20171207-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/adam/test.out...done.
(gdb) break testFunc
Breakpoint 1 at 0x400530: file test.cpp, line 12.
(gdb) r
Starting program: /home/adam/test.out
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0, gz=0x0) at test.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb)
lambda = 0.031557
14 }
(gdb) n
main () at test.cpp:21
21 return 0;
(gdb) c
Continuing.
[Inferior 1 (process 1119) exited normally]
(gdb) set displaced-stepping on
(gdb) r
Starting program: /home/adam/test.out
Breakpoint 1, testFunc (a=0x0, n=0, sx=0x0, sy=0x0, rc=0x0, nr=0, b=4,
f=9.50000026e+09, c=0x0, d=0x0, e=0x0, gx=0x0, gy=0x0, gz=0x0) at test.cpp:12
12 float lambda = C_LIGHT / f;
(gdb) n
13 printf("lambda = %f\n", lambda);
(gdb)
lambda = 0.031557
14 }
(gdb)
main () at test.cpp:21
21 return 0;
(gdb) c
Continuing.
[Inferior 1 (process 1186) exited normally]
Looks good.
Here's a patch for that build error, though I assume someone will eventually
catch this:
diff --git a/gdb/target-descriptions.c b/gdb/target-descriptions.c
index 5a6f61945d..363ddf5ac6 100644
--- a/gdb/target-descriptions.c
+++ b/gdb/target-descriptions.c
@@ -1832,8 +1832,7 @@ public:
gdbarch_osabi_name (tdesc_osabi (e)));
printf_unfiltered ("\n");
}
-
- for (const struct bfd_arch_info *compatible : e->compatible)
+ for (const bfd_arch_info_type *compatible : e->compatible)
printf_unfiltered
(" tdesc_add_compatible (result, bfd_scan_arch (\"%s\"));\n",
compatible->printable_name);
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 16:57:00 -0000
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--- Comment #20 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Oh also - do you know if your fix could be backported to other releases and
pushed to the distributions? It's awesome my debugger doesn't corrupt memory
anymore when debugging functions. I guess I can remember to use the workaround
in the interim - though this makes stepping over a breakpoint impossible,
doesn't it?
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug breakpoints/22569] New: Internal error when using "break
-source test.c main"
Date: Thu, 07 Dec 2017 17:16:00 -0000
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Bug ID: 22569
Summary: Internal error when using "break -source test.c main"
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
Target Milestone: ---
With this test file:
#include <stdio.h>
#define IS_EVEN(n) (n % 2 == 0)
namespace foo
{
bool main ()
{
return true;
}
}
int prout ()
{
return 2;
}
int main (int argc, char **argv)
{
if (IS_EVEN (argc) && foo::main () && prout () == 3)
return 1;
else
return 0;
}
Compiled with:
g++ test.cpp -o test -g3 -O0
Gives an internal error when running:
./gdb --data-directory=data-directory -nx test -ex "break -source test.cpp
main"
/home/emaisin/src/binutils-gdb/gdb/linespec.c:3302: internal-error: void
decode_line_full(const event_location*, int, program_space*, symtab*, int,
linespec_result*, const char*, const char*): Assertion `result.size () == 1 ||
canonical->pre_expanded' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
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Subject: [Bug breakpoints/22569] Internal error when using "break -source
test.c main"
Date: Thu, 07 Dec 2017 17:18:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simon.marchi at ericsson dot com
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To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
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Date: Thu, 07 Dec 2017 17:54:00 -0000
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--- Comment #21 from Adam Stylinski <kungfujesus06 at gmail dot com> ---
Created attachment 10669
--> https://sourceware.org/bugzilla/attachment.cgi?id=10669&action=edit
fix for building gdb
In case you wanted a formal patch (attribution and such).
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Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
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--- Comment #22 from Pedro Alves <palves at redhat dot com> ---
(In reply to Adam Stylinski from comment #20)
> Oh also - do you know if your fix could be backported to other releases and
> pushed to the distributions? It's awesome my debugger doesn't corrupt
> memory anymore when debugging functions.
I think it should be backportable. It's a nasty bug, and I think the fix can't
make things worse. I'll look into merging into the 8.0 branch when I have a
chance, but I don't know whether/when your distro will pick it up. I think
Fedora gdb will backport it, or already has, not sure.
> I guess I can remember to use the
> workaround in the interim - though this makes stepping over a breakpoint
> impossible, doesn't it?
No, GDB should still be able to move past breakpoints. Did that fail for you?
With "set displaced-stepping off" GDB has to stop all threads, remove
breakpoint, single-step the thread, reinsert breakpoint, and re-resume all
other threads. With displaced stepping, gdb steps the breakpoint out-of-line
without disturbing the other threads. So the workaround disables an
optimization. (Though things were different in older releases.)
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 18:20:00 -0000
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--- Comment #23 from Pedro Alves <palves at redhat dot com> ---
(In reply to Adam Stylinski from comment #21)
> Created attachment 10669 [details]
> fix for building gdb
>
> In case you wanted a formal patch (attribution and such).
Thanks! I'll push it in.
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Subject: [Bug c++/21222] A function with VEX encoded SSE instructions and a
particular number of arguments corrupts a value calculated on the stack when
stepping through the function
Date: Thu, 07 Dec 2017 18:39:00 -0000
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--- Comment #24 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=23a8d1862b7e5b95f0fe9d724c6be326e545e6d1
commit 23a8d1862b7e5b95f0fe9d724c6be326e545e6d1
Author: Adam Stylinski <adam.stylinski@etegent.com>
Date: Thu Dec 7 12:51:03 2017 -0500
Fix build with g++ 6.3.1
With g++ 6.3.1:
target-descriptions.c: In member function ‘virtual void
print_c_tdesc::visit_pre(const target_desc*)’:
target-descriptions.c:1836:16: error: types may not be defined in a
for-range-declaration [-Werror]
for (const struct bfd_arch_info *compatible : e->compatible)
^~~~~~
I think at some point the forward declaration of this struct had been
removed and declared as a typedef. This fixes that.
gdb/ChangeLog:
2017-12-07 Adam Stylinski <adam.stylinski@etegent.com>
PR c++/21222
* target-descriptions.c (print_c_tdesc::visit_pre): Change type of
range-for variable.
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22569] Internal error when using "break -source
test.c main"
Date: Thu, 07 Dec 2017 19:25:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
CC| |keiths at redhat dot com
Assignee|unassigned at sourceware dot org |keiths at redhat dot com
--- Comment #1 from Keith Seitz <keiths at redhat dot com> ---
This is happening because convert_explicit_location_to_linespec (or some
caller?) doesn't check whether the resultant explicit location is
valid/fully-specified.
The original input string parses as "-source", "test.cpp", and "main". The
first two tokens are converted to the explicit (under-specified) source
filename. "main" is passed to create_breakpoint as the EXTRA_STRING argument
(used for dprtinf conditions or thread/condition/task parsing).
However once this explicit location is converted into SaLs, nothing apparently
validates the explicit location (or at least this particular (mis)usage).
convert_explicit_location_to_linespec does some checking for valid input, e.g.,
if a -label is specified but doesn't exit, it will error.
I think that it should also check this case, where the input is underspecified.
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>From gdb-prs-return-22203-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 07 19:42:34 2017
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Subject: [Bug breakpoints/22569] Internal error when using "break -source
test.c main"
Date: Thu, 07 Dec 2017 19:42:00 -0000
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--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
(In reply to Keith Seitz from comment #1)
> ... (or some caller?) ...
Actually, this check is normally performed in string_to_event_location, but
there is an early return which does /not/ perform the check.
Working on patch/test.
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Subject: [Bug breakpoints/22569] Internal error when using "break -source
test.c main"
Date: Thu, 07 Dec 2017 21:21:00 -0000
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--- Comment #3 from Keith Seitz <keiths at redhat dot com> ---
Patch submitted:
https://sourceware.org/ml/gdb-patches/2017-12/msg00147.html
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To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22511] Regression in "commands"
Date: Thu, 07 Dec 2017 21:53:00 -0000
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--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tom Tromey <tromey@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=99598d713f45d1b26015ec3562d160dc2b3792e4
commit 99598d713f45d1b26015ec3562d160dc2b3792e4
Author: Tom Tromey <tom@tromey.com>
Date: Fri Nov 3 10:26:11 2017 -0600
Fix regression in "commands"
Pedro pointed out a regression in "commands", where trying to clear a
breakpoint's command list would fail:
(top-gdb) commands
Type commands for breakpoint(s) 3, one per line.
End with a line saying just "end".
>end
No breakpoints specified.
(top-gdb)
I believe the bug was introduced by my patch that changes
counted_command_line to be a shared_ptr. This causes the problem
because now the counted_command_line in commands_command_1 can be NULL,
whereas previously it never could be.
After some discussion, we agreed to simply remove the error case from
commands_command_1.
2017-12-07 Tom Tromey <tom@tromey.com>
PR breakpoints/22511:
* breakpoint.c (commands_command_1): Don't throw an exception when
no commands have been read.
2017-12-07 Tom Tromey <tom@tromey.com>
* gdb.base/break.exp: Add test for empty "commands".
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Subject: [Bug breakpoints/22511] Regression in "commands"
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--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
Fixed.
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Subject: [Bug breakpoints/22569] Internal error when using "break -source
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Keith Seitz <kseitz@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fa6eb693cf43b427474b1d96ce093f6ea9e5da6a
commit fa6eb693cf43b427474b1d96ce093f6ea9e5da6a
Author: Keith Seitz <keiths@redhat.com>
Date: Thu Dec 7 12:59:07 2017 -0800
Validate explicit locations with early termination
breakpoints/22569 involves an internal error generated by the rather
innocent looking command:
(gdb) break -source test.cpp main
.../linespec.c:3302: internal-error: void decode_line_full(...):
Assertion `result.size () == 1 || canonical->pre_expanded' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
The input string is tokenized into "-source", "test.cpp", and "main"
(input parsing breaks on whitespace). create_breakpoint is then called with
the explicit location (containing only the source file name) and "main" as
the extra_string argument.
No SaLs are created for this underspecified explicit location, and the
"result.size () == 1" evaluates false (as does the pre_expanded condition).
This triggers the assertion.
Normally string_to_explicit_location validates the input string. However,
the presence of the string "main" causes the parser to exit early:
802 else
803 {
804 /* End of the explicit location specification.
805 Stop parsing and return whatever explicit location was
806 parsed. */
807 *argp = start;
808 return location;
809 }
This bypasses the validation that is done a few lines down in this function
which would have emitted the expected error. This patch fixes that.
Additionally, this patch also fixes an inconsistency with error reporting
in this use case:
(gdb) b -source foo
Source filename requires function, label, or line offset.
(gdb) b -source foo main
No source file named foo.
These two commands should have elicited the same error message.
gdb/ChangeLog:
PR breakpoints/22569
* location.c (string_to_explicit_location): When terminating
parsing early, break out of enclosing loop instead of returning.
gdb/testsuite/ChangeLog:
PR breakpoints/22569
* gdb.linespec/ls-errs.exp: Change expected result of "break
-source this file has spaces.c -line 3".
Check that an explicit source file followed by whitespace is
identified as an invalid explicit location.
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Subject: [Bug breakpoints/22569] Internal error when using "break -source
test.c main"
Date: Thu, 07 Dec 2017 23:41:00 -0000
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Keith Seitz <keiths at redhat dot com> changed:
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----------------------------------------------------------------------------
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Resolution|--- |FIXED
--- Comment #5 from Keith Seitz <keiths at redhat dot com> ---
Patch confirmed, closing bug.
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Subject: [Bug breakpoints/22567] pending breakpoint location's gdbarch is
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Yao Qi <qiyao@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=6b05c8bd437152d7a3ecfc19074ab243ee6c92f2
commit 6b05c8bd437152d7a3ecfc19074ab243ee6c92f2
Author: Yao Qi <yao.qi@linaro.org>
Date: Fri Dec 8 15:43:49 2017 +0000
Fix PR 22567: set SAL .section in minsym_found
PR 22567 is that breakpoint location can't correct gdbarch from SAL,
because its fields .section and .symtab is NULL. We use to have code
setting .section, but was removed by 4024cf2
- if (msymbol_is_text (msymbol))
+ CORE_ADDR func_addr;
+ if (msymbol_is_function (objfile, msymbol, &func_addr))
{
- sal = find_pc_sect_line (MSYMBOL_VALUE_ADDRESS (objfile, msymbol),
- (struct obj_section *) 0, 0);
- sal.section = MSYMBOL_OBJ_SECTION (objfile, msymbol);
this patch adds this back by moving it to the common place at the bottom
of the function.
gdb:
2017-12-08 Yao Qi <yao.qi@linaro.org>
PR breakpionts/22567
* linespec.c (minsym_found): Set sal.section.
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug rust/22562] investigate linespec issues with rust
Date: Fri, 08 Dec 2017 16:18:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
It would also be good to look at replicating the new C++ linespec
behavior, where "break method" will break on methods in any namespace.
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>From gdb-prs-return-22211-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 16:25:15 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/22573] New: "finish" doesn't respect "set print pretty"
Date: Fri, 08 Dec 2017 16:25:00 -0000
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Bug ID: 22573
Summary: "finish" doesn't respect "set print pretty"
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I "finished" from a function that returned a structure and got:
Value returned is $10 = (0x7fffe45a98c8,
rustc_trans::debuginfo::metadata::MemberDescriptionFactory::VariantMDF(rustc_trans::debuginfo::metadata::VariantMemberDescriptionFactory
{offsets: alloc::vec::Vec<rustc::ty::layout::Size> {buf:
alloc::raw_vec::RawVec<rustc::ty::layout::Size, alloc::heap::Heap> {ptr:
core::ptr::Unique<rustc::ty::layout::Size> {pointer:
core::nonzero::NonZero<*const rustc::ty::layout::Size> (0x7fffe43b2b10),
_marker: core::marker::PhantomData<rustc::ty::layout::Size>}, cap: 2, a:
alloc::heap::Heap}, len: 2}, args: alloc::vec::Vec<(alloc::string::String,
&rustc::ty::TyS)> {buf: alloc::raw_vec::RawVec<(alloc::string::String,
&rustc::ty::TyS), alloc::heap::Heap> {ptr:
core::ptr::Unique<(alloc::string::String, &rustc::ty::TyS)> {pointer:
core::nonzero::NonZero<*const (alloc::string::String, &rustc::ty::TyS)>
(0x7fffe4bbaa90), _marker: core::marker::PhantomData<(alloc::string::String,
&rustc::ty::TyS)>}, cap: 2, a: alloc::heap::Heap}, len: 2}, span:
syntax_pos::span_encoding::Span (71170)}))
That's all on one line.
I expected it to respect "set print pretty", but it did not.
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Subject: [Bug rust/22574] New: support ptype/o in rust
Date: Fri, 08 Dec 2017 16:38:00 -0000
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Bug ID: 22574
Summary: support ptype/o in rust
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: rust
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
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Bug 16224 is adding pahole-like functionality via "ptype/o".
The rust type printer should support this as well.
I have started a patch for this, so contact me if you plan
to pick this up.
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Subject: [Bug rust/22574] support ptype/o in rust
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Depends on| |16224
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=16224
[Bug 16224] add "pahole" functionality to ptype
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Subject: [Bug cli/16224] add "pahole" functionality to ptype
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Tom Tromey <tromey at sourceware dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Blocks| |22574
Referenced Bugs:
https://sourceware.org/bugzilla/show_bug.cgi?id=22574
[Bug 22574] support ptype/o in rust
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>From gdb-prs-return-22215-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 16:42:17 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
Date: Fri, 08 Dec 2017 16:42:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I'm looking into this.
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>From gdb-prs-return-22216-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 17:32:22 2017
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From: "qiyao at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug breakpoints/22567] pending breakpoint location's gdbarch is
incorrect after it is resolved
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Yao Qi <qiyao at gcc dot gnu.org> changed:
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--- Comment #4 from Yao Qi <qiyao at gcc dot gnu.org> ---
Fixed.
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>From gdb-prs-return-22217-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 19:36:16 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug testsuite/22420] gdb.base/dtrace-probe.exp not working (as in
"not able to run")
Date: Fri, 08 Dec 2017 19:36:00 -0000
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
I have a patch for this.
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>From gdb-prs-return-22218-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 19:53:10 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
Date: Fri, 08 Dec 2017 19:53:00 -0000
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--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
The test is failing for me even before the C++-ification patch, which excludes
the possibility of a regression introduced by the series.
Unfortunately I cannot test things with the regular dtrace program, because it
is proprietary. So it may very well be a problem with pdtrace.
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>From gdb-prs-return-22219-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 08 20:40:10 2017
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
Date: Fri, 08 Dec 2017 20:40:00 -0000
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--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=92469284a650232768523564f2c715c4ebb57906
commit 92469284a650232768523564f2c715c4ebb57906
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Fri Dec 8 15:33:55 2017 -0500
Fix thinko on dtrace-probe.c:dtrace_process_dof_probe
While investigating PR gdb/22557 ("Regression:
gdb.base/dtrace-probe.exp"), I noticed that the code is wrongly
declaring a new "expression_up" variable inside the TRY block in
"dtrace_process_dof_probe". This causes the outter "expr" variable to
be empty, which may have an impact later when evaluating the
expression.
This commit fixes that. Unfortunately the script used to test DTrace
probes (gdb/testsuite/lib/pdtrace.in) is not very reliable so I cannot
say whether this commit fixes the PR mentioned above. Nonetheless,
it's an obvious fix and should go in.
gdb/ChangeLog:
2017-12-08 Sergio Durigan Junior <sergiodj@redhat.com>
* dtrace-probe.c (dtrace_process_dof_probe): Do not declare a new
"expression_up" inside the TRY block.
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>From gdb-prs-return-22220-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Dec 09 11:03:22 2017
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From: "jan.kratochvil at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/22576] New: ppc64: gdbarch_skip_trampoline_code fails for
relro
Date: Sat, 09 Dec 2017 11:03:00 -0000
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Bug ID: 22576
Summary: ppc64: gdbarch_skip_trampoline_code fails for relro
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: tdep
Assignee: unassigned at sourceware dot org
Reporter: jan.kratochvil at redhat dot com
Target Milestone: ---
ppc64 ld switched default norelro->relro by:
647e4d46495f2bfb0950fd1066c8a660173cca40 is the first bad commit
commit 647e4d46495f2bfb0950fd1066c8a660173cca40
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Wed Jun 22 05:37:24 2016 -0700
ld: Add a linker configure option --enable-relro
Tested gdb: c5ba17787d077249ab7071192566a2c0205fc97f 2017-12-09
runtest gdb.reverse/solib-pr
ecsave.exp
FAIL: gdb.reverse/solib-precsave.exp: reverse-step back to main one
FAIL: gdb.reverse/solib-precsave.exp: reverse-step into solib function two
FAIL: gdb.reverse/solib-precsave.exp: reverse-step within solib function two
FAIL: gdb.reverse/solib-precsave.exp: reverse-step back to main two
FAIL: gdb.reverse/solib-precsave.exp: run until end part two
FAIL: gdb.reverse/solib-precsave.exp: reverse-next over solib function one
(gdb) PASS: gdb.reverse/solib-precsave.exp: reverse-step within solib function
one
reverse-step^M
0x00000000100005d8 in 00000017.plt_call.shr2 ()^M
(gdb) FAIL: gdb.reverse/solib-precsave.exp: reverse-step back to main one
Also reproducible as:
PASS:
gcc outputs/gdb.reverse/solib-precsave/shr2.c.o -shared -Wl,-soname,shr2.sl -g
-lm -o outputs/gdb.reverse/solib-precsave/shr2.sl -Wl,-z,norelro
../gdb -batch -data-directory ../data-directory/
outputs/gdb.reverse/solib-precsave/solib-precsave -q -ex 'b 38' -ex r -ex
record -ex n -ex reverse-step -ex reverse-step -ex 'set debug infrun 0' -ex
reverse-step
No more reverse-execution history.
main () at
/home/fedora/jankratochvil/redhat/gdb-git/gdb/testsuite/gdb.reverse/solib-reverse.c:38
38 b[1] = shr2(17); /* middle part two */
FAIL:
gcc outputs/gdb.reverse/solib-precsave/shr2.c.o -shared -Wl,-soname,shr2.sl -g
-lm -o outputs/gdb.reverse/solib-precsave/shr2.sl -Wl,-z,relro
../gdb -batch -data-directory ../data-directory/
outputs/gdb.reverse/solib-precsave/solib-precsave -q -ex 'b 38' -ex r -ex
record -ex n -ex reverse-step -ex reverse-step -ex 'set debug infrun 0' -ex
reverse-step
22 return 2*x;
0x00000000100005d8 in 00000017.plt_call.shr2 ()
It is due to ppc64_skip_trampoline_code_1 does not recognizing PLT from ld -z
relro. This makes gdbarch_skip_trampoline_code to fail (return zero).
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Subject: [Bug gdb/22472] Arguments evaluation doesn't always work
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Hi-Angel <hi-angel at yandex dot ru> changed:
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--- Comment #4 from Hi-Angel <hi-angel at yandex dot ru> ---
Reopening per lack of elaboration on reasons of closing.
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Subject: [Bug gdb/22472] Arguments evaluation doesn't always work
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Andreas Schwab <schwab@linux-m68k.org> changed:
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----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Andreas Schwab <schwab@linux-m68k.org> ---
Arguments to user-defined commands aren't evaluated, they are textually split
on spaces, as documented in the manual.
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code fails for relro
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Jan Kratochvil <jan.kratochvil at redhat dot com> changed:
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| |jan.kratochvil at redhat dot com,
| |ulrich.weigand at de dot ibm.com
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code fails for relro
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Alan Modra <amodra at gmail dot com> changed:
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>From gdb-prs-return-22225-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 11 06:12:41 2017
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code fails for relro
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Alan Modra <amodra at gmail dot com> changed:
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--- Comment #1 from Alan Modra <amodra at gmail dot com> ---
This isn't a simple matter of some plt call sequence not being recognized. The
reason ppc64_skip_trampoline_code is returning zero is that when trying to
match the plt_call.shr2 stub in the executable, gdb matches
ppc64_standard_linkage5 as it should, but then ppc64_standard_linkage3_target
calls get_frame_register_unsigned to retrieve r2 and it returns the value used
by the shared library, *not* the executable. So instead of reading the
executable plt gdb reads some other random location that happens to be zero in
this case.
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code fails for relro
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target| |powerpc64-linux
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>From gdb-prs-return-22227-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 11 06:28:19 2017
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ppc64: |ppc64:
|gdbarch_skip_trampoline_cod |gdbarch_skip_trampoline_cod
|e fails for relro |e uses wrong r2
--- Comment #2 from Alan Modra <amodra at gmail dot com> ---
I should add, a bogus r2 value is returned when using a -z norelro library too,
but the resulting wild read happens to hit a non-zero value. So this isn't
anything specific to relro.
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>From gdb-prs-return-22228-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 11 06:49:20 2017
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
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--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
You are right I did not understand the ppc64 plt decoding, thanks for handling
that.
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Subject: [Bug gdb/22583] New: gdb.base/breakpoint-in-ro-region.exp
regressions on software single-step targets
Date: Mon, 11 Dec 2017 11:09:00 -0000
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Bug ID: 22583
Summary: gdb.base/breakpoint-in-ro-region.exp regressions on
software single-step targets
Product: gdb
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At <https://sourceware.org/ml/gdb-patches/2017-12/msg00212.html>, Maciej
writes:
On 12/09/2017 01:16 AM, Maciej W. Rozycki wrote:
> This change, i.e.:
>
> commit d930703d68ae160ddfe8ebe5fdcf416fb6090e1e
> Author: Pedro Alves <palves@redhat.com>
> Date: Thu Nov 16 18:44:43 2017 +0000
>
> caused regressions to appear in remote `mips-mti-linux-gnu' target testing
> (`x86_64-linux-gnu' host), specifically:
>
> FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind
> FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw on: single-step breakpoint is not left behind
> FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw off: step in ro region (cannot insert hw break)
> FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw off: single-step breakpoint is not left behind
> FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted on: auto-hw on: single-step breakpoint is not left behind
>
> and indeed detailed logs indicate a breakpoint is left lingering, e.g.:
>
> (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: step in ro region (cannot insert sw break)
> maint info breakpoints 0
> Num Type Disp Enb Address What
> 0 sw single-step keep y 0x00400774 in main at [...]/gdb/testsuite/gdb.base/breakpoint-in-ro-region.c:24 inf 1 thread 1
> stop only in thread 1
> (gdb) FAIL: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind
>
> vs:
>
> (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: step in ro region (cannot insert sw break)
> maint info breakpoints 0
> No breakpoint or watchpoint matching '0'.
> (gdb) PASS: gdb.base/breakpoint-in-ro-region.exp: always-inserted off: auto-hw off: single-step breakpoint is not left behind
>
> as at commit d930703d68ae^.
Filling so we don't forget before 8.1 is out.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22584] New: Regression: expression completer and scope
operator ("p std::[TAB]" => "p std::std::")
Date: Mon, 11 Dec 2017 11:46:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22584
Bug ID: 22584
Summary: Regression: expression completer and scope operator
("p std::[TAB]" => "p std::std::")
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
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Reporter: palves at redhat dot com
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I noticed this regression in the expression completer:
"(gdb) p std::[TAB]" => "(gdb) p std::std::"
obviously we should have not completed to "std::std::".
Looks like I forgot to take into account the fact that with expressions, the
completion word point is not always at the start of the symbol name (it is with
linespecs).
I know how to fix it, just need to find time to get to it.
Filing so we don't forget before 8.1 is out.
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Subject: [Bug gdb/22584] Regression: expression completer and scope operator
("p std::[TAB]" => "p std::std::")
Date: Mon, 11 Dec 2017 11:46:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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Subject: [Bug gdb/22583] gdb.base/breakpoint-in-ro-region.exp regressions on
software single-step targets
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----------------------------------------------------------------------------
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
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--- Comment #4 from Pedro Alves <palves at redhat dot com> ---
Guess users will see this as a regression? Should we try to fix this for
(branching real soon) gdb 8.1 ?
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Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
(In reply to Sergio Durigan Junior from comment #3)
> The test is failing for me even before the C++-ification patch, which
> excludes the possibility of a regression introduced by the series.
That's not a good assumption to make because it was failing for you for other
reasons. It was clearly passing for me, as shown in the log in the OP.
I've now confirmed it: the test was passing at
935676c92feb5f35e4634ef58c20ffdfd0979b07^ (before "Convert generic probe
interface to C++ (and perform some cleanups)"), and started failing at
9c23b42ffa67b866cd7562c1d8caed70db5d6840 ("Convert DTrace probe interface to
C++ (and perform some cleanups)").
> Unfortunately I cannot test things with the regular dtrace program, because
> it is proprietary. So it may very well be a problem with pdtrace.
TBC, I'm not using regular dtrace either. The difference is that I observed
the regression on F23, and pdtrace only gets broken with binutils newer than
F23's. If I test on F23 with current master binutils in the PATH, I also see
the undefined references to `main'.
(In reply to cvs-commit@gcc.gnu.org from comment #4)
> commit 92469284a650232768523564f2c715c4ebb57906
> Author: Sergio Durigan Junior <sergiodj@redhat.com>
> Date: Fri Dec 8 15:33:55 2017 -0500
>
> Fix thinko on dtrace-probe.c:dtrace_process_dof_probe
>
...
> This commit fixes that. Unfortunately the script used to test DTrace
> probes (gdb/testsuite/lib/pdtrace.in) is not very reliable so I cannot
> say whether this commit fixes the PR mentioned above. Nonetheless,
> it's an obvious fix and should go in.
Yes, this fixed it for me. Thanks.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22557] Regression: gdb.base/dtrace-probe.exp
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--- Comment #6 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
(In reply to Pedro Alves from comment #5)
> (In reply to Sergio Durigan Junior from comment #3)
> > The test is failing for me even before the C++-ification patch, which
> > excludes the possibility of a regression introduced by the series.
>
> That's not a good assumption to make because it was failing for you for
> other reasons. It was clearly passing for me, as shown in the log in the OP.
> I've now confirmed it: the test was passing at
> 935676c92feb5f35e4634ef58c20ffdfd0979b07^ (before "Convert generic probe
> interface to C++ (and perform some cleanups)"), and started failing at
> 9c23b42ffa67b866cd7562c1d8caed70db5d6840 ("Convert DTrace probe interface to
> C++ (and perform some cleanups)").
I did not see the log you mentioned. I agree that my conclusion was
precipitated, but comment 1 says
I suspect this is more fall out from the probe C++ification. (Just a guess,
I'm not really looking at it.)
So it wasn't clear to me whether the test was passing before or not.
Anyway, just explaining why I thought this regression had been introduced by an
older commit.
> > Unfortunately I cannot test things with the regular dtrace program, because
> > it is proprietary. So it may very well be a problem with pdtrace.
>
> TBC, I'm not using regular dtrace either. The difference is that I observed
> the regression on F23, and pdtrace only gets broken with binutils newer than
> F23's. If I test on F23 with current master binutils in the PATH, I also
> see the undefined references to `main'.
Right, and putting "-R .eh_frame -K main" in the ${STRIP} line doesn't work.
> (In reply to cvs-commit@gcc.gnu.org from comment #4)
>
> > commit 92469284a650232768523564f2c715c4ebb57906
> > Author: Sergio Durigan Junior <sergiodj@redhat.com>
> > Date: Fri Dec 8 15:33:55 2017 -0500
> >
> > Fix thinko on dtrace-probe.c:dtrace_process_dof_probe
> >
> ...
> > This commit fixes that. Unfortunately the script used to test DTrace
> > probes (gdb/testsuite/lib/pdtrace.in) is not very reliable so I cannot
> > say whether this commit fixes the PR mentioned above. Nonetheless,
> > it's an obvious fix and should go in.
>
> Yes, this fixed it for me. Thanks.
Thanks for testing it.
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Subject: [Bug testsuite/22420] gdb.base/dtrace-probe.exp not working (as in
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
(In reply to Sergio Durigan Junior from comment #1)
> I have a patch for this.
Well, it turns out the patch doesn't work...
I was passing extra options to the 'strip' program in order to prevent the
removal of 'main' and '.eh_frame' symbols.
${STRIP} -R .eh_frame -K main ...
This "works" in the sense that the compilation succeeds, but there is clearly
something else that needs to be done because I now see a regression that
constantly happens:
133 print $_probe_arg0
134 $2 = 0x0
135 (gdb) FAIL: gdb.base/dtrace-probe.exp: print $_probe_arg0 for probe
progress-counter
As was discussed in PR 22557, this impacts the testing ability of the DTrace
probe support on GDB.
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--- Comment #7 from Pedro Alves <palves at redhat dot com> ---
(In reply to Sergio Durigan Junior from comment #6)
> I did not see the log you mentioned. (...)
It's the "I'm seeing this regression" + the gdb.log snippet combined.
> So it wasn't clear to me whether the test was passing before or not.
OK, so sounds like some terminology mismatch then. A regression is something
that worked before and now fails. Some new test exposing preexisting problems
would be a "new failure" rather than a regression.
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Subject: [Bug symtab/8748] gdb
Date: Mon, 11 Dec 2017 23:00:00 -0000
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weimin.pan at oracle dot com changed:
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CC| |weimin.pan at oracle dot com
--- Comment #4 from weimin.pan at oracle dot com ---
Problem is no longer reproducible with upstream gdb(on amd64/aarch6/sparc64):
% gdb a.out
(gdb) b 23
Breakpoint 1 at 0x100800: file t.c, line 23.
(gdb) r
Starting program: /tmp/8748/t.x
Breakpoint 1, norm_inf (A=0x3fffffff370, nf=4, nc=4) at t.c:23
23 return findmax(suma, nc);
(gdb) p suma
$1 = {16, 9, 5, 9}
(gdb) whatis suma
type = double [4]
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
Date: Mon, 11 Dec 2017 23:43:00 -0000
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| |db-patches/2017-12/msg00254
| |.html
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
Date: Tue, 12 Dec 2017 00:07:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #5 from Pedro Alves <palves at redhat dot com> ---
Wow thanks, that was fast! Setting the milestone, since there's a patch
already.
(I'll leave it to Ulrich to review.)
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Subject: [Bug gdb/22556] Regression: gdb.threads/names.exp with
--target_board=native-gdbserver
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Simon Marchi <simark@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a933405894161c8b15f675c48d077b7f7d6aabf2
commit a933405894161c8b15f675c48d077b7f7d6aabf2
Author: Simon Marchi <simon.marchi@ericsson.com>
Date: Mon Dec 11 21:05:30 2017 -0500
remote: Return NULL extra_info/name if they are empty
Commit
remote: C++ify thread_item and threads_listing_context
21fe1c752e254167d953fa8c846280f63a3a5290
broke the test gdb.threads/names.exp. The problem is that since we now
use an std::string to hold the extra_info, an empty string is returned
by target_extra_thread_info to print_thread_info_1 when the remote stub
didn't send any extra info, instead of NULL before. Because of that,
print_thread_info_1 prints the extra info between parentheses, which
results in some spurious empty parentheses.
Expected: * 1 Thread 22752.22752 "main" all_threads_ready () at ...
Actual : * 1 Thread 22752.22752 "main" () all_threads_ready () a ...
Since the bug was introduced by a behavior change in the remote target,
I chose to fix it on the remote target side by making it return NULL
when the extra string is empty. This will avoid possibly changing the
behavior of the common code and affecting other targets.
The name field has the same problem. If a remote stub returns no thread
names, remote_thread_name will return an empty string instead of NULL,
so print_thread_info_1 will show empty quotes ("") instead of nothing.
gdb/ChangeLog:
PR gdb/22556
* remote.c (remote_thread_name): Return NULL if name is empty.
(remote_threads_extra_info): Return NULL if extra info is empty.
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Subject: [Bug tdep/22576] ppc64: gdbarch_skip_trampoline_code uses wrong r2
Date: Tue, 12 Dec 2017 12:55:00 -0000
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--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Alan Modra <amodra@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=db9077b7275e86637218a7a7d165cb85a4de116f
commit db9077b7275e86637218a7a7d165cb85a4de116f
Author: Alan Modra <amodra@gmail.com>
Date: Mon Dec 11 17:31:11 2017 +1030
PR22576, ppc64_skip_trampoline_code uses wrong r2 for EXEC_REVERSE
The TOC pointer register, r2, on powerpc64 is generally not mentioned
in debug info. It is saved and restored by call linkage code, and
set to the callee value either by call stub code (ELFv1) or in the
callee global entry point code (ELFv2). A call stub uses the caller
TOC pointer to access the PLT. So for gdb to read the correct PLT
entry in order to determine the destination of the trampoline, gdb
needs to know the caller r2. When skipping over trampolines in the
normal forward direction, the caller r2 is simply the current value of
r2 (at the start of the trampoline). However, when reversing over
trampolines the current value of r2 is that for the callee. Using
that value results in wild reads of memory rather than the correct PLT
entry.
This patch corrects the value of r2 by using the value saved on the
stack for reverse execution. Note that in reverse execution mode it
isn't really necessary for skip_trampoline_code to return the actual
destination, so we're doing a little more work than needed here. Any
non-zero return value would do (and it would be nicer if the interface
was changed to return the start of the stub).
PR tdep/22576
* ppc64-tdep.c (ppc64_plt_entry_point): Rewrite to take TOC-relative
PLT offset, and retrieve r2 from stack when executing in reverse.
(ppc64_standard_linkage1_target): Drop pc param. Calculate offset
rather than PLT address.
(ppc64_standard_linkage2_target): Likewise.
(ppc64_standard_linkage3_target): Likewise.
(ppc64_standard_linkage4_target): Likewise.
(ppc64_skip_trampoline_code_1): Adjust to suit.
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Subject: [Bug tdep/22576] ppc64_skip_trampoline_code uses wrong r2 for
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Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Summary|ppc64: |ppc64_skip_trampoline_code
|gdbarch_skip_trampoline_cod |uses wrong r2 for
|e uses wrong r2 |EXEC_REVERSE
--- Comment #7 from Alan Modra <amodra at gmail dot com> ---
Fixed
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Subject: [Bug gdb/22594] New: Possible access to unintended variable in
"gdb/stabsread.c" line 1364
Date: Tue, 12 Dec 2017 14:41:00 -0000
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Bug ID: 22594
Summary: Possible access to unintended variable in
"gdb/stabsread.c" line 1364
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: petrum at gmail dot com
Target Milestone: ---
While experimenting with a CodeSonar plugin we develop, we noticed a
potential bug in file "gdb/stabsread.c" line 1364, function define_symbol
1359 *typedef_sym = *sym;
1360 SYMBOL_ACLASS_INDEX (typedef_sym) = LOC_TYPEDEF;
1361 SYMBOL_VALUE (typedef_sym) = valu;
1362 SYMBOL_DOMAIN (typedef_sym) = VAR_DOMAIN;
1363 if (TYPE_NAME (SYMBOL_TYPE (sym)) == 0)
1364 TYPE_NAME (SYMBOL_TYPE (sym)) //HERE
1365 = obconcat (&objfile->objfile_obstack,
1366 SYMBOL_LINKAGE_NAME (sym),
1367 (char *) NULL);
1368 add_symbol_to_list (typedef_sym, &file_symbols);
Shouldn't typedef_sym be used instead of sym (and maybe also in the previous
line)? A similar issue might be in line 1320.
Regards,
Petru Florin Mihancea
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>From gdb-prs-return-22245-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 12 14:42:11 2017
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Subject: [Bug gdb/22594] Possible access to unintended variable in
"gdb/stabsread.c" line 1364
Date: Tue, 12 Dec 2017 14:42:00 -0000
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>From gdb-prs-return-22246-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 12 17:45:33 2017
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Subject: [Bug symtab/8748] gdb
Date: Tue, 12 Dec 2017 17:45:00 -0000
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--- Comment #5 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
This can be closed, then.
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>From gdb-prs-return-22247-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 12 21:35:52 2017
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From: "macro@linux-mips.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/22597] New: Empty `qsThreadInfo' reply handling
regression causing inability to execute
Date: Tue, 12 Dec 2017 21:35:00 -0000
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Bug ID: 22597
Summary: Empty `qsThreadInfo' reply handling regression causing
inability to execute
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: macro@linux-mips.org
CC: palves at redhat dot com
Target Milestone: 8.1
At <https://sourceware.org/ml/gdb-patches/2017-12/msg00285.html>, I wrote:
On Tue, 12 Dec 2017, Maciej W. Rozycki wrote:
> Another regression. This makes `mips-mti-linux-gnu' GDB stop working
> with older stubs. I have discovered it in an attempt to regression-test
> said GDB with a remote n64 target and `x86_64-pc-linux-gnu' host, and an
> outstanding change which affects non-XML stubs. Any attempt to continue
> execution after the initial connection fails with:
>
> [...]
> Process .../gdb/testsuite/outputs/gdb.base/advance/advance created; pid = 2670
> Listening on port 2346
> target remote [...]:2346
> Remote debugging using [...]:2346
> Reading symbols from .../lib64/ld.so.1...done.
> [Switching to Thread <main>]
> (gdb) continue
> Cannot execute this command without a live selected thread.
> (gdb)
>
> This is as from commit 5cd63fda035d. Up to 5cd63fda035d^ instead I get:
>
> [...]
> Process .../gdb/testsuite/outputs/gdb.base/advance/advance created; pid = 30044
> Listening on port 2346
> target remote [...]:2346
> Remote debugging using [...]:2346
> Reading symbols from .../lib64/ld.so.1...done.
> 0x000000fff79534f0 in __start () from .../lib64/ld.so.1
> (gdb) continue
> Continuing.
> warning: Could not load shared library symbols for linux-vdso.so.1.
> Do you need "set solib-search-path" or "set sysroot"?
>
> Breakpoint 1, main () at .../gdb/testsuite/gdb.base/advance.c:41
> 41 c = 5;
> (gdb)
>
> At the protocol level the difference starts here (bad):
>
> Sending packet: $qfThreadInfo#bb...Ack
> Packet received: m1814
> Sending packet: $qsThreadInfo#c8...Ack
> Packet received: l
> [Switching to Thread <main>]
> Sending packet: $qSymbol::#5b...Ack
> Packet received: qSymbol:6e70746c5f76657273696f6e
> Sending packet: $qSymbol::6e70746c5f76657273696f6e#4d...Ack
> Packet received: OK
> Sending packet: $Hg1814#7d...Ack
> Packet received: OK
> Sending packet: $Hg0#df...Ack
> Packet received: E01
> (gdb) continue
> Cannot execute this command without a live selected thread.
> (gdb)
>
> vs (good):
>
> Sending packet: $qfThreadInfo#bb...Ack
> Packet received: m154d
> Sending packet: $qsThreadInfo#c8...Ack
> Packet received: l
> Sending packet: $mfff726c4f0,4#cb...Ack
> Packet received: 03e0c825
> Sending packet: $mfff726c4ec,4#fd...Ack
> Packet received: 00000000
> Sending packet: $mfff726c4f0,4#cb...Ack
> Packet received: 03e0c825
> 0x000000fff726c4f0 in __start () from .../lib64/ld.so.1
> Sending packet: $qSymbol::#5b...Ack
> Packet received: qSymbol:6e70746c5f76657273696f6e
> Sending packet: $qSymbol::6e70746c5f76657273696f6e#4d...Ack
> Packet received: OK
> (gdb) continue
> Continuing.
> Sending packet: $mfff726c4f0,4#cb...Ack
> Packet received: 03e0c825
> Sending packet: $Z0,120000d6c,4#36...Ack
> Packet received:
> Packet Z0 (software-breakpoint) is NOT supported
> [...]
>
> The version of `gdbserver' causing this regression is as at commit
> f8b73d13b7ca^, the last MIPS backend version with no XML support. It's
> likely that later versions hit this regression too, as the mode of failure
> is clearly not XML-related.
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>From gdb-prs-return-22248-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 12 21:36:14 2017
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Subject: [Bug gdb/22583] gdb.base/breakpoint-in-ro-region.exp regressions on
software single-step targets
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Maciej W. Rozycki <macro@linux-mips.org> changed:
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>From gdb-prs-return-22249-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 13 14:24:34 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22584] Regression: expression completer and scope operator
("p std::[TAB]" => "p std::std::")
Date: Wed, 13 Dec 2017 14:24:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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----------------------------------------------------------------------------
Status|NEW |ASSIGNED
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Fix posted here:
https://sourceware.org/ml/gdb-patches/2017-12/msg00301.html
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>From gdb-prs-return-22250-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 13 15:40:30 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/21356] value.c:828: internal-error: int
value_contents_bits_eq(const value*, int, const value*, int, int): Assertion
`offset1 + length <= TYPE_LENGTH (val1->enclosing_type) * TARGET_CHAR_BIT'
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--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
From: Keith Seitz <keiths@redhat.com>
[PATCH] Compute proper length for dynamic types of TYPE_CODE_TYPEDEF
https://sourceware.org/ml/gdb-patches/2017-06/msg00679.html
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>From gdb-prs-return-22251-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 13 16:41:27 2017
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22584] Regression: expression completer and scope operator
("p std::[TAB]" => "p std::std::")
Date: Wed, 13 Dec 2017 16:41:00 -0000
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--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=a22ecf70263eff75ca2c5878fe7e8d0311d6737f
commit a22ecf70263eff75ca2c5878fe7e8d0311d6737f
Author: Pedro Alves <palves@redhat.com>
Date: Wed Dec 13 16:38:50 2017 +0000
Fix regression: expression completer and scope operator (PR gdb/22584)
I noticed this regression in the expression completer:
"(gdb) p std::[TAB]" => "(gdb) p std::std::"
obviously we should have not completed to "std::std::".
The problem is that in the earlier big completer rework, I missed
taking into account the fact that with expressions, the completion
word point is not always at the start of the symbol name (it is with
linespecs).
The fix is to run the common prefix / LCD string (what readline uses
to expand the input line) through make_completion_match_str too.
New testcase included, exercising both TAB completion and the complete
command.
gdb/ChangeLog:
2017-12-13 Pedro Alves <palves@redhat.com>
* completer.c (completion_tracker::maybe_add_completion): New
'text' and 'word' parameters. Use make_completion_match_str.
(completion_tracker::add_completion): New 'text' and 'word'
parameters. Pass down.
(completion_tracker::recompute_lowest_common_denominator): Change
parameter type to gdb::unique_xmalloc_ptr rval ref. Adjust.
* completer.h (completion_tracker::add_completion): New 'text' and
'word' parameters.
(completion_tracker::recompute_lowest_common_denominator): Change
parameter type to gdb::unique_xmalloc_ptr rval ref.
(completion_tracker::recompute_lowest_common_denominator): Change
parameter type to gdb::unique_xmalloc_ptr rval ref.
* symtab.c (completion_list_add_name): Pass down 'text' and 'word'
as well.
gdb/testsuite/ChangeLog:
2017-12-13 Pedro Alves <palves@redhat.com>
* gdb.cp/cpcompletion.exp: Load completion-support.exp.
("expression with namespace"): New set of tests.
* gdb.cp/pr9594.cc (Test_NS::foo, Test_NS::bar)
(Nested::Test_NS::qux): New.
* lib/completion-support.exp (test_gdb_complete_cmd_multiple): Add
defaults to 'start_quote_char' and 'end_quote_char' parameters.
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>From gdb-prs-return-22252-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 13 16:42:28 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22584] Regression: expression completer and scope operator
("p std::[TAB]" => "p std::std::")
Date: Wed, 13 Dec 2017 16:42:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #3 from Pedro Alves <palves at redhat dot com> ---
Fixed.
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Subject: [Bug gdb/22583] gdb.base/breakpoint-in-ro-region.exp regressions on
software single-step targets
Date: Wed, 13 Dec 2017 19:46:00 -0000
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
I've managed to rebase my old "software single-step on x86-64" branch on
current master:
https://github.com/palves/gdb/commits/palves/x86_software_single_step
and I can reproduce this locally now.
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22600] New: GDB doesn't handle bitfield offsets on
big-endian architectures
Date: Wed, 13 Dec 2017 21:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22600
Bug ID: 22600
Summary: GDB doesn't handle bitfield offsets on big-endian
architectures
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: sergiodj at redhat dot com
Target Milestone: ---
This bug was discovered while doing the "ptype /o" work, because it uses the
same algorithm for calculating offsets on bitfields. The code in question can
be found at value.c:value_primitive_field.
It seems like the algorithm for calculating bitfield offsets is not working
correctly on BE machines. This is not only for "ptype /o", but also for
regular print commands. For example, consider this test:
struct tyu
{
int a1 : 1;
int a2 : 3;
int a3 : 23;
char a4 : 2;
int64_t a5;
int a6 : 5;
int64_t a7 : 3;
};
int
main (int argc, char *argv[])
{
struct tyu e;
e.a1 = e.a2 = e.a3 = e.a4 = e.a6 = e.a7 = -1;
return 0;
}
After stopping GDB at the "return 0;" line, here's what we see when we print
"e" on x86_64:
(gdb) p e
$1 = {a1 = -1, a2 = -1, a3 = -1, a4 = -1 '\377', a5 = 140737488344880, a6 =
-1, a7 = -1}
While on PPC64BE:
(gdb) p e
$1 = {a1 = -1, a2 = 3, a3 = 3, a4 = 3 '\003', a5 = 70367536153528, a6 = -1,
a7 = -1}
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Subject: [Bug gdb/22600] GDB doesn't handle bitfield offsets on big-endian
architectures
Date: Wed, 13 Dec 2017 21:17:00 -0000
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--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
To be clear: the problem here is that all of the bitfields must be -1. "e.a5"
contains a strange value, but that is because it was never initialized.
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Subject: [Bug gdb/22600] GDB doesn't handle bitfield offsets on big-endian
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--- Comment #2 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
New examples, with a5 initialized to 0:
x86_64:
$1 = {a1 = -1, a2 = -1, a3 = -1, a4 = -1 '\377', a5 = 0, a6 = -1, a7 = -1}
PPC64BE:
$1 = {a1 = -1, a2 = 3, a3 = 3, a4 = 3 '\003', a5 = 0, a6 = -1, a7 = -1}
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Subject: [Bug gdb/22600] GDB doesn't handle bitfield offsets on big-endian
architectures
Date: Wed, 13 Dec 2017 21:36:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #3 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
There were problems with the testcase. See:
https://sourceware.org/ml/gdb-patches/2017-12/msg00322.html
https://sourceware.org/ml/gdb-patches/2017-12/msg00323.html
https://sourceware.org/ml/gdb-patches/2017-12/msg00324.html
Closing as INVALID.
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Subject: [Bug breakpoints/19681] Attempting to set a breakpoint at a label in
a C++ constructor causes internal-error: decode_line_full
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Keith Seitz <keiths at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #2 from Keith Seitz <keiths at redhat dot com> ---
Looks like this has been long been fixed. I checked back to Jul 2016, and it's
been working since at least then:
(gdb) b A::A(int):labeldude
Breakpoint 1 at 0x4004d9: file 19681.cc, line 5.
(gdb) i b
Num Type Disp Enb Address What
1 breakpoint keep y 0x00000000004004d9 A::A(int):labeldude
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Subject: [Bug exp/22487] `51-var-list-children var3` is not returning within
10 seconds
Date: Thu, 14 Dec 2017 11:11:00 -0000
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--- Comment #3 from Jonah Graham <jonah at kichwacoders dot com> ---
I am wondering if this happens due to some Python pretty-printers getting
themselves in an infinite loop? Can you test with no pretty printers.
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>From gdb-prs-return-22260-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 14 12:01:34 2017
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From: "klausman-glibc at schwarzvogel dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/19061] gdb-7.10 hangs/spins-on-cpu when debugging any
program on Alpha
Date: Thu, 14 Dec 2017 12:01:00 -0000
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--- Comment #8 from Tobias Klausmann <klausman-glibc at schwarzvogel dot de> ---
(In reply to Tobias Klausmann from comment #7)
> I *think* this may be fixed in gdb-8. I just checked out gdb-8.0.1-release
> from git and I have been unable to reproduce the hang. I will keep using it
> for everyday stuff and report back if anything breaks.
I spoke too soon: I can now reliably make it hang on commit gdb-8.0.1-release
aka 2dcf9205c32aa69c102640962ff03746d04c02cc using ls or a trivial hello world
program.
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>From gdb-prs-return-22261-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 14 17:44:36 2017
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From: "keiths at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22608] New: operator<< completion clips to operator<
Date: Thu, 14 Dec 2017 17:44:00 -0000
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Bug ID: 22608
Summary: operator<< completion clips to operator<
Product: gdb
Version: unknown
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Source:
$ cat >oplt.cc << EOF
template<class C> class Empty
{
};
template <typename T>
bool operator< (T &lhs, T &rhs)
{
return false;
}
template <typename T>
int operator<< (T &obj, T &val)
{
return 0;
}
int
main ()
{
Empty<int> ei;
bool b = ei < ei;
int i = ei << ei;
return 0;
}
EOF
$ g++ -g oplt.cc -o oplt
$ gdb -q oplt
Reading symbols from /home/keiths/tmp/oplt...done.
(gdb) complete break operator<
break operator< <Empty<int> >(Empty<int>&, Empty<int>&)
break operator<< <Empty<int> >(Empty<int>&, Empty<int>&)
/* correct */
(gdb) complete break operator<<
break operator< <Empty<int> >(Empty<int>&, Empty<int>&)
break operator<< <Empty<int> >(Empty<int>&, Empty<int>&)
/* /not/ correct */
(gdb) break operator<<[TAB]
break operator< <Empty<int> >(Empty<int>&, Empty<int>&)
break operator<< <Empty<int> >(Empty<int>&, Empty<int>&)
(gdb) break operator< /* notice the output clipped the last `<' */
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>From gdb-prs-return-22262-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 14 20:00:40 2017
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From: "pinskia at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/18653] spawn changes SIGPIPE SIG_DFL to SIG_IGN
Date: Thu, 14 Dec 2017 20:00:00 -0000
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Andrew Pinski <pinskia at gcc dot gnu.org> changed:
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--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Also this causes gdb to be useless if you LD_PRELOAD of libSegFault.so. You
get an internal error right at the beginning of running gdb. Is this by design
and maybe the internal error should be changed to be sorry if the address of
the function is not located in gdb itself or rather in a shared library.
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>From gdb-prs-return-22263-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 14 23:56:27 2017
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From: "palves at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/18653] spawn changes SIGPIPE SIG_DFL to SIG_IGN
Date: Thu, 14 Dec 2017 23:56:00 -0000
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--- Comment #8 from Pedro Alves <palves at redhat dot com> ---
Indeed, we get:
(top-gdb) bt
#0 0x000000000056b001 in internal_error(char const*, int, char const*, ...)
(file=0xaf5f38 "src/gdb/common/signals-state-save-restore.c", line=64,
fmt=0xaf5f18 "unexpected signal handler") at src/gdb/common/errors.c:54
#1 0x00000000005752c9 in save_original_signals_state() () at
src/gdb/common/signals-state-save-restore.c:64
#2 0x00000000007425de in captured_main_1(captured_main_args*)
(context=0x7fffffffd860)
at src/gdb/main.c:509
#3 0x0000000000743622 in captured_main(void*) (data=0x7fffffffd860) at
src/gdb/main.c:1145
During symbol reading, cannot get low and high bounds for subprogram DIE at
24065.
#4 0x00000000007436f9 in gdb_main(captured_main_args*) (args=0x7fffffffd860)
at src/gdb/main.c:1171
#5 0x0000000000413acd in main(int, char**) (argc=1, argv=0x7fffffffd968) at
src/gdb/gdb.c:32
How about this? Too noisy?
~~~~~~~~~~~~~~~~~~~~~
$ LD_PRELOAD=/usr/lib64/libSegFault.so ./gdb ~/gdb/tests/threads
warning: Found custom handler for signal 11 (Segmentation fault) preinstalled.
Some signal dispositions inherited from the environment (SIG_DFL/SIG_IGN)
won't be propagated to spawned programs.
GNU gdb (GDB) 8.0.50.20171213-git
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/pedro/gdb/tests/threads...done.
(gdb)
~~~~~~~~~~~~~~~~~~~~~
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>From gdb-prs-return-22264-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 14 23:58:33 2017
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From: "pinskia at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/18653] spawn changes SIGPIPE SIG_DFL to SIG_IGN
Date: Thu, 14 Dec 2017 23:58:00 -0000
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--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Pedro Alves from comment #8)
> How about this? Too noisy?
As long as -q disables the message this is ok to me.
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>From gdb-prs-return-22265-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 15 09:36:52 2017
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Subject: [Bug build/22495] remote-sim.c should be built with
-Wno-format-nonliteral
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Pavel I. Kryukov <kryukov at frtk dot ru> changed:
What |Removed |Added
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Subject: [Bug build/22612] New: check_dwarf64_offsets () always returns false
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Bug ID: 22612
Summary: check_dwarf64_offsets () always returns false
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Clang warns that 'true' is returned from check_dwarf64_offsets () only if
'unsigned int' is greater than (1 << 32) which is not possible if
sizeof(unsigned int) == 4:
> dwarf2read.c:26610:43: error: comparison of constant 4294967296 with expression
> of type 'typename std::underlying_type<sect_offset>::type'
> (aka 'unsigned int') is always false
> [-Werror,-Wtautological-constant-out-of-range-compare]
> if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32))
> dwarf2read.c:26618:43: error: comparison of constant 4294967296 with expression
> of type 'typename std::underlying_type<sect_offset>::type'
> (aka 'unsigned int') is always false
> [-Werror,-Wtautological-constant-out-of-range-compare]
> if (to_underlying (per_cu.sect_off) >= (static_cast<uint64_t> (1) << 32))
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Subject: [Bug build/22612] check_dwarf64_offsets () always returns false
Date: Fri, 15 Dec 2017 10:01:00 -0000
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Pavel I. Kryukov <kryukov at frtk dot ru> changed:
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Subject: [Bug build/22612] check_dwarf64_offsets () always returns false
Date: Fri, 15 Dec 2017 10:23:00 -0000
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Pedro Alves <palves at redhat dot com> changed:
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--- Comment #1 from Pedro Alves <palves at redhat dot com> ---
Context:
https://sourceware.org/ml/gdb-patches/2017-12/msg00276.html
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From: "matz at suse dot de" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug breakpoints/22613] New: assert in inferior_thread from
tui_on_normal_stop
Date: Fri, 15 Dec 2017 13:30:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22613
Bug ID: 22613
Summary: assert in inferior_thread from tui_on_normal_stop
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: breakpoints
Assignee: unassigned at sourceware dot org
Reporter: matz at suse dot de
Target Milestone: ---
Created attachment 10690
--> https://sourceware.org/bugzilla/attachment.cgi?id=10690&action=edit
script showing problem
Place script in gdb build directory, then:
% ./gdb-crash.sh
50
This is a bug, please report it. For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.
./gdb-crash.sh: line 50: 4560 Aborted (core dumped) ../gdb/gdb
--data-directory ../gdb/data-directory -nx --batch-silent -return-child-result
--eval-command="break '$break_line'" --eval-command='source bp.py'
--eval-command="run a b c" --eval-command='quit' ./prog
(core file is strange, so use gdb directly, then from the tmp dir created
by script:)
% gdb --args ../gdb/gdb --data-directory ../gdb/data-directory -nx
--batch-silent -return-child-result --eval-command="break '$break_line'"
--eval-command='source bp.py' --eval-command="run a b c" --eval-command='quit'
./prog
(gdb) r
...
(gdb) bt
#0 0x00007ffff64bc3d5 in __GI_raise (sig=sig@entry=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007ffff64bd858 in __GI_abort () at abort.c:90
#2 0x000000000083b056 in dump_core () at ../../gdb/utils.c:284
#3 0x000000000083b526 in internal_vproblem(internal_problem *, const char *,
int, const char *, typedef __va_list_tag __va_list_tag *) (
problem=0x10281a0 <internal_error_problem>,
file=0xb42136 "../../gdb/thread.c", line=93,
fmt=0xb420cb "%s: Assertion `%s' failed.", ap=0x7fffffffcf58)
at ../../gdb/utils.c:493
#4 0x000000000083b5f9 in internal_verror (file=0xb42136 "../../gdb/thread.c",
line=93, fmt=0xb420cb "%s: Assertion `%s' failed.", ap=0x7fffffffcf58)
at ../../gdb/utils.c:518
#5 0x0000000000543c71 in internal_error (file=0xb42136 "../../gdb/thread.c",
line=93, fmt=0xb420cb "%s: Assertion `%s' failed.")
at ../../gdb/common/errors.c:55
#6 0x000000000080ddc3 in inferior_thread () at ../../gdb/thread.c:93
#7 0x00000000004a4ebf in tui_on_normal_stop (bs=0x1344f50, print_frame=1)
at ../../gdb/tui/tui-interp.c:97
#8 0x000000000073ae51 in observer_normal_stop_notification_stub (
data=0x4a4e61 <tui_on_normal_stop(bpstats*, int)>,
args_data=0x7fffffffd120) at ./observer.inc:36
#9 0x000000000073ad56 in generic_observer_notify (subject=0x1215780,
args=0x7fffffffd120) at ../../gdb/observer.c:167
#10 0x000000000073aeef in observer_notify_normal_stop (bs=0x1344f50,
print_frame=1) at ./observer.inc:61
#11 0x00000000006f12b9 in normal_stop () at ../../gdb/infrun.c:8309
#12 0x00000000006e8a28 in fetch_inferior_event (client_data=0x0)
at ../../gdb/infrun.c:3942
#13 0x00000000006d7112 in inferior_event_handler (event_type=INF_REG_EVENT,
client_data=0x0) at ../../gdb/inf-loop.c:43
#14 0x000000000045d9a3 in handle_target_event (error=0, client_data=0x0)
at ../../gdb/linux-nat.c:4521
#15 0x0000000000695165 in handle_file_event (file_ptr=0x1330500, ready_mask=1)
at ../../gdb/event-loop.c:733
#16 0x0000000000695708 in gdb_wait_for_event (block=0)
at ../../gdb/event-loop.c:859
#17 0x0000000000694588 in gdb_do_one_event () at ../../gdb/event-loop.c:322
#18 0x0000000000816899 in wait_sync_command_done () at ../../gdb/top.c:503
#19 0x0000000000816911 in maybe_wait_sync_command_done (was_sync=0)
at ../../gdb/top.c:520
#20 0x0000000000816ce5 in execute_command (p=0x7fffffffdfbb "c", from_tty=0)
at ../../gdb/top.c:632
#21 0x0000000000714416 in catch_command_errors (
command=0x81692a <execute_command(char const*, int)>,
arg=0x7fffffffdfb3 "run a b c", from_tty=0) at ../../gdb/main.c:378
#22 0x0000000000715596 in captured_main_1 (context=0x7fffffffd8e0)
at ../../gdb/main.c:1124
#23 0x00000000007156ab in captured_main (data=0x7fffffffd8e0)
at ../../gdb/main.c:1145
#24 0x0000000000715782 in gdb_main (args=0x7fffffffd8e0)
at ../../gdb/main.c:1171
#25 0x000000000041120d in main (argc=10, argv=0x7fffffffd9e8)
at ../../gdb/gdb.c:32
So it doesn't find the thread to continue when called from inside the
breakpoint
handler. Whatever should happen here, gdb shouldn't crash.
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From: "vladilen.kozin at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/11403] Failed to set controlling terminal
Date: Fri, 15 Dec 2017 16:59:00 -0000
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Vlad <vladilen.kozin at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |vladilen.kozin at gmail dot com
--- Comment #4 from Vlad <vladilen.kozin at gmail dot com> ---
Looks like the same issue plagues GDB 7.11.1.
Reported on emacs mailing list
https://lists.gnu.org/archive/html/help-gnu-emacs/2017-12/msg00114.html since I
thought the issue might be with Tramp. This was reported for older Linux box
with GDB 7.7, but I later reproduced on Ubuntu 16.04.3 LTS (GNU/Linux
4.4.0-104-generic x86_64) and GDB 7.11.1
When debugging on local machine this is usually benign, but it does appear to
break attempt to debug with I/O when debugging remotely say over TRAMP. See the
mailing list post above for details.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/19061] gdb-7.10 hangs/spins-on-cpu when debugging any
program on Alpha
Date: Fri, 15 Dec 2017 18:21:00 -0000
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--- Comment #9 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Pedro Alves <palves@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=68f81d60196eb201b209873cf53258f13b0046b9
commit 68f81d60196eb201b209873cf53258f13b0046b9
Author: Richard Henderson <rth@redhat.com>
Date: Fri Dec 15 18:19:42 2017 +0000
Fix PR19061, gdb hangs/spins-on-cpu when debugging any program on Alpha
This fixes PR19061, where gdb hangs/spins-on-cpu when debugging any
program on Alpha.
(This patch is Uros' forward port of the patch from comment #5
of the PR [1].)
Patch was tested on alphaev68-linux-gnu, also tested with gcc's
testsuite, where it fixed all hangs in guality.exp and
simulate-thread.exp testcases.
[1] https://sourceware.org/bugzilla/show_bug.cgi?id=19061#c5
gdb/ChangeLog:
2017-12-15 Richard Henderson <rth@redhat.com>
Uros Bizjak <ubizjak@gmail.com>
PR gdb/19061
* alpha-tdep.c (alpha_software_single_step): Call
alpha_deal_with_atomic_sequence here.
(set_gdbarch_software_single_step): Set to
alpha_software_single_step.
* nat/linux-ptrace.h [__alpha__]: Define GDB_ARCH_IS_TRAP_BRKPT
and GDB_ARCH_IS_TRAP_HWBKPT.
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From: "cvs-commit at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/16224] add "pahole" functionality to ptype
Date: Fri, 15 Dec 2017 20:10:00 -0000
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--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Sergio Durigan Junior
<sergiodj@sourceware.org>:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=7c1618381fdaa0697a211721ac31844f884797ac
commit 7c1618381fdaa0697a211721ac31844f884797ac
Author: Sergio Durigan Junior <sergiodj@redhat.com>
Date: Mon Nov 20 16:34:59 2017 -0500
Implement pahole-like 'ptype /o' option
This commit implements the pahole-like '/o' option for 'ptype', which
prints the offsets and sizes of struct fields, reporting whenever
there is a hole found.
The output is heavily based on pahole(1), with a few modifications
here and there to adjust it to our reality. Here's an example:
/* offset | size */ type = struct wer : public tuv {
public:
/* 32 | 24 */ struct tyu {
/* 32:31 | 4 */ int a1 : 1;
/* 32:28 | 4 */ int a2 : 3;
/* 32: 5 | 4 */ int a3 : 23;
/* 35: 3 | 1 */ char a4 : 2;
/* XXX 3-bit hole */
/* XXX 4-byte hole */
/* 40 | 8 */ int64_t a5;
/* 48:27 | 4 */ int a6 : 5;
/* 48:56 | 8 */ int64_t a7 : 3;
/* total size (bytes): 24 */
} a1;
/* total size (bytes): 56 */
}
A big part of this patch handles the formatting logic of 'ptype',
which is a bit messy. The code to handle bitfield offsets, however,
took some time to craft. My thanks to Pedro Alves for figuring things
out and pointing me to the right direction, as well as coming up with
a way to inspect the layout of structs with bitfields (see testcase
for comments).
After many discussions both on IRC and at the mailing list, I tried to
implement printing vtables and inherited classes. Unfortunately the
code grew too complex and there were still a few corner cases failing
so I had to drop the attempt. This should be implemented in a future
patch.
This patch is the start of a long-term work I'll do to flush the local
patches we carry for Fedora GDB. In this specific case, I'm aiming at
upstreaming the feature implemented by the 'pahole.py' script that is
shipped with Fedora GDB:
<https://src.fedoraproject.org/rpms/gdb/blob/master/f/gdb-archer.patch#_311>
This has been regression-tested on the BuildBot. There's a new
testcase for it, along with an update to the documentation. I also
thought it was worth mentioning this feature in the NEWS file.
gdb/ChangeLog:
2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com>
Pedro Alves <palves@redhat.com>
PR cli/16224
* NEWS (Changes since GDB 8.0): Mention new '/o' flag.
* c-typeprint.c (OFFSET_SPC_LEN): New define.
(c_type_print_varspec_prefix): New argument 'struct
print_offset_data *'.
(c_type_print_base_1): New function and prototype.
(c_print_type_1): New function, with code from 'c_print_type'.
(c_print_type): Use 'c_print_type_1'.
(c_type_print_varspec_prefix): New argument 'struct
print_offset_data *'. Use it. Call 'c_type_print_base_1'
instead of 'c_print_type_base'.
(print_spaces_filtered_with_print_options): New function.
(output_access_specifier): Take new argument FLAGS. Modify
function to call 'print_spaces_filtered_with_print_options'.
(c_print_type_vtable_offset_marker): New function.
(c_print_type_union_field_offset): New function.
(c_print_type_struct_field_offset): New function.
(c_print_type_no_offsets): New function.
(c_type_print_base_struct_union): New argument 'struct
print_offset_data *'. Print offsets and sizes for
struct/union/class fields.
* typeprint.c (const struct type_print_options
type_print_raw_options): Initialize 'print_offsets'.
(static struct type_print_options default_ptype_flags):
Likewise.
(struct print_offset_data print_offset_default_data): New
variable.
(whatis_exp): Handle '/o' option.
(_initialize_typeprint): Add '/o' flag to ptype's help.
* typeprint.h (struct print_offset_data): New struct.
(struct type_print_options) <print_offsets>: New field.
gdb/testsuite/ChangeLog:
2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/16224
* gdb.base/ptype-offsets.cc: New file.
* gdb.base/ptype-offsets.exp: New file.
gdb/doc/ChangeLog:
2017-12-15 Sergio Durigan Junior <sergiodj@redhat.com>
PR cli/16224
* gdb.texinfo (ptype): Add documentation for new flag '/o'.
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To: gdb-prs@sourceware.org
Subject: [Bug rust/22574] support ptype/o in rust
Date: Fri, 15 Dec 2017 20:12:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22574
Bug 22574 depends on bug 16224, which changed state.
Bug 16224 Summary: add "pahole" functionality to ptype
https://sourceware.org/bugzilla/show_bug.cgi?id=16224
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
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Subject: [Bug cli/16224] add "pahole" functionality to ptype
Date: Fri, 15 Dec 2017 20:12:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
--- Comment #4 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Patches have been pushed.
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22616] New: gdb will not set program counter $pc to
mmap()ed region
Date: Sat, 16 Dec 2017 16:53:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22616
Bug ID: 22616
Summary: gdb will not set program counter $pc to mmap()ed
region
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jreiser at BitWagon dot com
Target Milestone: ---
gdb won't set the program counter $pc to point to an mmap()ed region.
Reproducible test case under Linux on armv7l (RaspberryPi-3B in 32-bit mode):
===== gdbbug.c
#include <sys/types.h>
#include <sys/mman.h>
int
main(int argc, char *argv[])
{
int *addr = mmap(0, 4096, PROT_EXEC|PROT_WRITE|PROT_READ,
MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
*addr = 0xe24dd004; // sub sp,sp,#4
return 0;
}
===== end gdbbug.c
$ uname -a
Linux host.domain 4.14.5-300.fc27.armv7hl #1 SMP Mon Dec 11 17:29:37 UTC 2017
armv7l armv7l armv7l GNU/Linux
$ gcc --version
gcc (GCC) 7.2.1 20170915 (Red Hat 7.2.1-2)
$ gcc -g -o gdbbug gdbbug.c
$ gdb gdbbug
GNU gdb (GDB) 8.0.50.20171216-git
<<snip>>
(gdb) b main
Breakpoint 1 at 0x10418: file gdbbug.c, line 7.
(gdb) run
Starting program: /path/to/gdbbug
Cannot parse expression `.L1199 4@r4'.
warning: Probes-based dynamic linker interface failed.
Reverting to original interface.
Breakpoint 1, main (argc=0x1, argv=0xbefff464) at gdbbug.c:7
7 int *addr = mmap(0, 4096, PROT_EXEC|PROT_WRITE|PROT_READ,
(gdb) n
9 *addr = 0xe24dd004; // sub sp,sp,#4
(gdb) n
10 return 0;
(gdb) x/i $pc ## current value
=> 0x10450 <main+76>: mov r3, #0
(gdb) x/i addr ## mmap()ed region
0xb6ffa000: sub sp, sp, #4
(gdb) set $pc = $_ ## attempt to set $pc; no complaint
(gdb) x/i $pc ## but value did not change
=> 0x1043c <main+56>: str r0, [r11, #-8]
(gdb) set $pc = 0xb6ffa000 ## stronger attempt to set $pc
Attempt to assign to an unmodifiable value. ## very strange
(gdb) x/i $pc ## value did not change
=> 0x1043c <main+56>: str r0, [r11, #-8]
(gdb)
=====
gdb was built from git tip:
=====
$ git log
commit 09da3ecf04d75084ea7d9c43e3cc0b18b2443ea3 (HEAD -> master, origin/master,
origin/HEAD)
Author: GDB Administrator <gdbadmin@sourceware.org>
Date: Sat Dec 16 00:00:33 2017 +0000
Automatic date update in version.in
=====
A preliminary version of this bugzilla report was filed as
https://bugzilla.redhat.com/show_bug.cgi?id=1526617
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22617] New: RFE: parallelize ./configure
Date: Sat, 16 Dec 2017 17:05:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22617
Bug ID: 22617
Summary: RFE: parallelize ./configure
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jreiser at BitWagon dot com
Target Milestone: ---
Request For Enhancement ("RFE"): Please parallelize the "checking for ..." and
"checking whether ..." pieces of running ./configure for gdb. There are
hundreds of them, they are all independent, yet they run serially in separate
processes. Auto-parallelizing these tests, or obeying a "-jN" command-line
argument like 'make', would save minutes of developer time.
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22618] New: bad diagnosis and recovery suggestion when
bison or flex is missing
Date: Sat, 16 Dec 2017 17:35:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22618
Bug ID: 22618
Summary: bad diagnosis and recovery suggestion when bison or
flex is missing
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jreiser at BitWagon dot com
Target Milestone: ---
When building gdb on a system where bison or flex is not found in $PATH, then
the error diagnosis and recovery suggestion is incomplete. The suggestion
forgets to say:
Run "make clean" after installing [bison or flex] before continuing.
This causes needless bewilderment and lost time when subsequent 'make'
complains about a missing file syslex.c. Maintainers of the gdb package in
various Linux distributions often encourage "file bug reports upstream"
[namely, here at sourceware.org instead of at the distribution level]. Thus
"gdb developer" often includes "ordinary users" who encounter problems with
distributed packaged gdb.
Furthermore, checking for bison and flex should be part of the top-level
./configure for gdb, and not [only] in lower-level .../configure scripts. By
default, a complete top-level build does require both bison and flex; supplying
them at first will avoid the necessity of "tending" the top-level 'make'
interactively. Add options "--without bison" and "--without flex" to the
top-level 'configure' if desired to please those experienced developers who
manage to avoid using bison and flex by excluding various sub-packages of gdb.
When doing a complete top-level build of gdb, then the bison diagnosis is:
=====
Making all in po
/home/jreiser/binutils-gdb/missing: line 81: bison: command not found
make[4]: Entering directory '/home/jreiser/binutils-gdb/gprof/po'
file=`echo bg | sed 's,.*/,,'`.gmo \
&& rm -f $file && PATH=../src:$PATH /usr/bin/msgfmt -o $file bg.po
WARNING: 'bison' is missing on your system.
You should only need it if you modified a '.y' file.
You may want to install the GNU Bison package:
<http://www.gnu.org/software/bison/>
make[2]: *** [Makefile:986: arparse.c] Error 127
make[2]: *** Waiting for unfinished jobs....
file=`echo da | sed 's,.*/,,'`.gmo \
&& rm -f $file && PATH=../src:$PATH /usr/bin/msgfmt -o $file da.po
/home/jreiser/binutils-gdb/missing: line 81: bison: command not found
file=`echo de | sed 's,.*/,,'`.gmo \
&& rm -f $file && PATH=../src:$PATH /usr/bin/msgfmt -o $file de.po
WARNING: 'bison' is missing on your system.
You should only need it if you modified a '.y' file.
You may want to install the GNU Bison package:
<http://www.gnu.org/software/bison/>
make[2]: *** [Makefile:986: sysinfo.c] Error 127
make[2]: Leaving directory '/home/jreiser/binutils-gdb/binutils'
=====
After installing bison, then re-running 'make' gives the flex diagnosis:
=====
/home/jreiser/binutils-gdb/missing: line 81: flex: command not found
updating sysinfo.h
WARNING: 'flex' is missing on your system.
You should only need it if you modified a '.l' file.
You may want to install the Fast Lexical Analyzer package:
<http://flex.sourceforge.net/>
make[2]: *** [Makefile:983: syslex.c] Error 127
make[2]: *** Waiting for unfinished jobs....
gcc -DHAVE_CONFIG_H -DWITH_DEFAULT_ALIGNMENT=STRICT_ALIGNMENT
-DDEFAULT_INLINE=0 -Wall -Wdeclaration-after-statement -Wpointer-arith
-Wpointer-sign -Wno-unused -Wunused-value -Wunused-function -Wno-switch
-Wno-char-subscripts -Wmissing-prototypes -Wdeclaration-after-statement
-Wempty-body -Wmissing-parameter-type -Wold-style-declaration
-Wold-style-definition -Wformat-nonliteral -DMODET -I. -I. -I../common
-I./../common -I../../include -I./../../include -I../../bfd -I./../../bfd
-I../../opcodes -I./../../opcodes -g -O2 -c -o version.o -MT version.o -MMD
-MP -MF .deps/version.Tpo version.c
make[2]: Leaving directory '/home/jreiser/binutils-gdb/binutils'
=====
After installing flex, then re-running 'make' gives the error:
=====
gcc -c -I. -I. -W -Wall -Wstrict-prototypes -Wmissing-prototypes -Wshadow
-Wstack-usage=262144 -Werror -I./../zlib -g -O2 -Wno-error ./syslex_wrap.c
./syslex_wrap.c:25:10: fatal error: syslex.c: No such file or directory
#include "syslex.c"
^~~~~~~~~~
compilation terminated.
make[2]: *** [Makefile:1375: syslex_wrap.o] Error 1
make[2]: Leaving directory '/home/jreiser/binutils-gdb/binutils'
=====
That error takes a while to figure out. The top-level ./configure should
diagnose the lack of bison and flex.
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22618] bad diagnosis and recovery suggestion when bison or
flex is missing
Date: Sat, 16 Dec 2017 17:37:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22618
--- Comment #1 from John Reiser <jreiser at BitWagon dot com> ---
Source was git tip as of:
=====
commit 09da3ecf04d75084ea7d9c43e3cc0b18b2443ea3 (HEAD -> master, origin/master,
origin/HEAD)
Author: GDB Administrator <gdbadmin@sourceware.org>
Date: Sat Dec 16 00:00:33 2017 +0000
Automatic date update in version.in
=====
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22619] New: repeat count is forgotten by newline to extend
previous 'x' command (examine memory)
Date: Sat, 16 Dec 2017 17:49:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22619
Bug ID: 22619
Summary: repeat count is forgotten by newline to extend
previous 'x' command (examine memory)
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jreiser at BitWagon dot com
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The command sequence
(gdb) x/12xw $sp
(gdb) ## newline to show the next 12 words
forgets the repeat count "12"; it displays only one word instead of the
expected 12.
Example:
$ gdb hello
GNU gdb (GNU gdb (GDB) 8.0.50.20171216-git
<<snip>>
(gdb) b main
(gdb) run
Breakpoint 1, main (argc=0x1, argv=0xbefff454) at hello.c:5
(gdb) x/12xw $sp
0xbefff2e8: 0x00010460 0x00000000 0xbefff454 0x00000001
0xbefff2f8: 0x00000000 0x00000000 0x00000000 0xb6e63c40
0xbefff308: 0xb6fb5000 0xbefff454 0x00000001 0x00010404
(gdb) ## type <Enter> or <Return> to ask for the next 12 words
0xbefff318: 0x9fea1ea9 ## only one (1) word shown instead of twelve (12)
(gdb)
gdb was built from git tip:
commit 09da3ecf04d75084ea7d9c43e3cc0b18b2443ea3 (HEAD -> master, origin/master,
origin/HEAD)
Author: GDB Administrator <gdbadmin@sourceware.org>
Date: Sat Dec 16 00:00:33 2017 +0000
Automatic date update in version.in
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>From gdb-prs-return-22280-listarch-gdb-prs=sources.redhat.com@sourceware.org Sat Dec 16 20:10:52 2017
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From: "sergiodj at redhat dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22617] RFE: parallelize ./configure
Date: Sat, 16 Dec 2017 20:10:00 -0000
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Sergio Durigan Junior <sergiodj at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |sergiodj at redhat dot com
Resolution|--- |WONTFIX
--- Comment #1 from Sergio Durigan Junior <sergiodj at redhat dot com> ---
Sorry, but this bug should be filed against autotools, and not GDB. Running
"configure" in parallel is not supported by autotools, and I don't know any
project that implements this by themselves. GDB's configure uses whatever it
can to speed things up (e.g., cache), so anything else should be implemented by
autotools IMO. Closing as WONTFIX.
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22621] New: Missing completion of std::__c
Date: Sun, 17 Dec 2017 05:02:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22621
Bug ID: 22621
Summary: Missing completion of std::__c
Product: gdb
Version: HEAD
Status: NEW
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: simon.marchi at ericsson dot com
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While stopped in a C++ program, I can complete std::__, there are many results,
including some starting with std::__c
(gdb) complete b std::__
...
b std::__cxx11::basic_string...
...
When I try to complete std::__c, I would expect to have at least the result
shown above. However, I get an empty list when I do
(gdb) complete b std::__c
Same when using the tab key.
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>From gdb-prs-return-22282-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 18 14:22:59 2017
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From: "abdul.basitijaz at gmail dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22629] New: GDB on MacOS is leaving an orphaned debuggee
process running
Date: Mon, 18 Dec 2017 14:22:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22629
Bug ID: 22629
Summary: GDB on MacOS is leaving an orphaned debuggee process
running
Product: gdb
Version: 8.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: abdul.basitijaz at gmail dot com
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GDB on MacOS(10.12.3) is leaving an orphaned debuggee process running on the
system after gdb exits.
Issue can be verified with any cpp executable out file.
To reproduce, compile any cpp program then run it under gdb, then quit gdb
during debugging :
For compilation :
g++ -g -c <ANY_TEST>.cpp
g++ -g <ANY_TEST>.o -o <ANY_TEST>.exe
For debugging :
> gdb
>> file <ANY_TEST>.exe
>> b main
>> r
After break point is hit quit the GDB and verify the process list
>> r or q (for both f these commands GDB shows that inferior process will be killed but it is not getting killed )
> ps ax |grep <ANY_TEST>.exe
<ANY_TEST>.exe will be shown that it is still running . So as many times you
perform above steps process will keep adding here
Test Environment info :
macOS 10.12.3
Kernel Version: Darwin 16.4.0
GNU gdb (GDB) 8.0.1
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>From gdb-prs-return-22283-listarch-gdb-prs=sources.redhat.com@sourceware.org Mon Dec 18 16:23:44 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22556] Regression: gdb.threads/names.exp with
--target_board=native-gdbserver
Date: Mon, 18 Dec 2017 16:23:00 -0000
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Simon Marchi <simon.marchi at ericsson dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
CC| |simon.marchi at ericsson dot com
Resolution|--- |FIXED
--- Comment #3 from Simon Marchi <simon.marchi at ericsson dot com> ---
Fixed by the above commit.
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Subject: [Bug symtab/8748] gdb
Date: Mon, 18 Dec 2017 22:36:00 -0000
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----------------------------------------------------------------------------
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug remote/22633] New: documentation for qOffsets
Date: Tue, 19 Dec 2017 20:20:00 -0000
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Bug ID: 22633
Summary: documentation for qOffsets
Product: gdb
Version: HEAD
Status: NEW
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Priority: P2
Component: remote
Assignee: unassigned at sourceware dot org
Reporter: tromey at sourceware dot org
Target Milestone: ---
In
https://github.com/luser/rust-gdb-remote-protocol/issues/11#issuecomment-352842771
we were discussing whether the remote can return '' or 'Enn' in response to
qOffsets.
This appears not to be documented properly in the manual.
gdbserver seems to return ''.
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>From gdb-prs-return-22286-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 19 20:24:35 2017
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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug remote/22633] documentation for qOffsets
Date: Tue, 19 Dec 2017 20:24:00 -0000
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--- Comment #1 from Tom Tromey <tromey at sourceware dot org> ---
The overview (https://sourceware.org/gdb/onlinedocs/gdb/Overview.html#Overview)
makes it clear that any command can have an empty response. But seeing
as the other commands here explicitly mention this, perhaps it would be
good to either fix this one as well, or to remove them all and have a paragraph
in this node re-explaining that.
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>From gdb-prs-return-22288-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 20 23:36:35 2017
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From: "jhb at FreeBSD dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug cli/22640] Extend ptype /o to support offsets and sizes in hex
rather than decimal
Date: Wed, 20 Dec 2017 23:36:00 -0000
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jhb at FreeBSD dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sergiodj at redhat dot com
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>From gdb-prs-return-22287-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 20 23:36:13 2017
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From: "jhb at FreeBSD dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug cli/22640] New: Extend ptype /o to support offsets and sizes in
hex rather than decimal
Date: Wed, 20 Dec 2017 23:36:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22640
Bug ID: 22640
Summary: Extend ptype /o to support offsets and sizes in hex
rather than decimal
Product: gdb
Version: unknown
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Severity: enhancement
Priority: P2
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Having used the recently added 'ptype /o' today, it would be nice to have an
option to output offsets (and probably sizes) in hexadecimal. I mostly care
about the offsets, but it would probably be most consistent to use the same
output base for both offsets and sizes.
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To: gdb-prs@sourceware.org
Subject: [Bug gdb/22645] New: gdb hangs on 32-bit ARM armv7l at SIGTRAP from
"bkpt" instruction 0xe1200070
Date: Tue, 26 Dec 2017 04:03:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=22645
Bug ID: 22645
Summary: gdb hangs on 32-bit ARM armv7l at SIGTRAP from "bkpt"
instruction 0xe1200070
Product: gdb
Version: HEAD
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gdb
Assignee: unassigned at sourceware dot org
Reporter: jreiser at BitWagon dot com
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gdb hangs in an infinite loop instead of stopping upon SIGTRAP when an inferior
on 32-bit ARM architecture 'armv7l' (such as RaspberryPi-3B in 32-bit mode)
executes the instruction "bkpt", which is 0xe1200070. The Linux kernel sends
SIGTRAP, but gdb processing tries PTRACE_CONT, which re-triggers the SIGTRAP.
Interrupting the gdb hang with SIGINT (ctrl-C) revives gdb, and the output for
SIGINT looks like the way gdb should have responded in the first place to the
SIGTRAP.
Here is an annotated transcript of a console terminal session which contains a
4-line reproducible test case plus recipe, as well as some 'strace' debugging
of the ptrace() calls used by gdb.
=====
$ uname -a ## the hardware and operating system environment
Linux host 4.14.7-300.fc27.armv7hl #1 SMP Mon Dec 18 17:10:15 UTC 2017 armv7l
armv7l armv7l GNU/Linux
$ cat bkpt.S ## the test case
.globl _start
_start:
bkpt
nop
$ gcc -o bkpt -nostartfiles -nostdlib bkpt.S ## the build recipe
$ ./bkpt ## bare execution gets SIGTRAP
Trace/breakpoint trap (core dumped)
$ echo $? ## shell exit code of previous process in this shell
133 ## 133 = 128 + 5; 5 ==> SIGTRAP
$ strace ./bkpt
execve("./bkpt", ["./bkpt"], 0xbeebe4c0 /* 28 vars */) = 0
--- SIGTRAP {si_signo=SIGTRAP, si_code=TRAP_HWBKPT, si_pid=65688, si_uid=0} ---
+++ killed by SIGTRAP (core dumped) +++
Trace/breakpoint trap (core dumped)
$ gdb --version
GNU gdb (GDB) 8.0.50.20171216-git
$ gdb bkpt ## gdb hangs
(gdb) x/12i _start ## verify correct assembly
0x10098 <_start>: bkpt 0x0000
0x1009c <_start+4>: nop {0}
0x100a0: Cannot access memory at address 0x100a0
(gdb) x/12x _start
0x10098 <_start>: 0xe1200070 0xe320f000 Cannot access memory at
address 0x100a0
(gdb) run
Starting program: /path/to/bkpt
^C ## session appears to be hung (gdb "unhealthy"), so send SIGINT from
console
Program received signal SIGINT, Interrupt.
0x00010098 in _start () ## gdb acts healthy for SIGINT; why not for SIGTRAP?
(gdb) x/i $pc
=> 0x10098 <_start>: bkpt 0x0000 ## the correct place
(gdb)
0x1009c <_start+4>: nop {0}
(gdb) q
$ dmesg | tail ## what happened while SIGTRAP under gdb
[ 483.287100] Unhandled prefetch abort: breakpoint debug exception (0x002) at
0x00010098
[ 483.295547] Unhandled prefetch abort: breakpoint debug exception (0x002) at
0x00010098
[ 483.303960] Unhandled prefetch abort: breakpoint debug exception (0x002) at
0x00010098
$ strace -e trace=ptrace -o strace-gdb.out gdb ./bkpt ## note strange
PTRACE_CONT after SIGTRAP (33 lines below; "what is this?")
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1307, si_uid=1000,
si_status=0, si_utime=0, si_stime=0} ---
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETREGS, 1308, NULL, 0xbe84ec60) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=SI_USER,
si_pid=1308, si_uid=1000}) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETREGS, 1308, NULL, 0xbe84ec60) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=SI_USER,
si_pid=1308, si_uid=1000}) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1309, si_uid=1000,
si_status=SIGSTOP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_SETOPTIONS, 1309, NULL, PTRACE_O_TRACESYSGOOD) = 0
ptrace(PTRACE_SETOPTIONS, 1309, NULL, PTRACE_O_TRACEFORK) = 0
ptrace(PTRACE_SETOPTIONS, 1309, NULL,
PTRACE_O_TRACEFORK|PTRACE_O_TRACEVFORKDONE) = 0
ptrace(PTRACE_CONT, 1309, NULL, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1309, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETEVENTMSG, 1309, NULL, [1310]) = 0
ptrace(PTRACE_KILL, 1310) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1310, si_uid=1000,
si_status=SIGKILL, si_utime=0, si_stime=0} ---
ptrace(PTRACE_SETOPTIONS, 1309, NULL, PTRACE_O_EXITKILL) = 0
ptrace(PTRACE_KILL, 1309) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1309, si_uid=1000,
si_status=SIGCHLD, si_utime=0, si_stime=0} ---
ptrace(PTRACE_KILL, 1309) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1309, si_uid=1000,
si_status=SIGKILL, si_utime=0, si_stime=0} ---
ptrace(PTRACE_SETOPTIONS, 1308, NULL,
PTRACE_O_TRACESYSGOOD|PTRACE_O_TRACEFORK|PTRACE_O_TRACEVFORK|PTRACE_O_TRACECLONE|PTRACE_O_TRACEEXEC|PTRACE_O_TRACEVFORKDONE|PTRACE_O_EXITKILL)
= 0
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84efa8,
iov_len=72}]) = 0
ptrace(PTRACE_GETVFPREGS, 1308, NULL, 0xbe84ee88) = 0
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ef70,
iov_len=72}]) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ede8,
iov_len=72}]) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0, si_value={int=1308, ptr=0x51c}}) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0}) = 0
ptrace(PTRACE_GETHBPREGS, 1308, NULL, 0xbe84edec) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0 ## what is this?
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ede8,
iov_len=72}]) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0, si_value={int=1308, ptr=0x51c}}) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0}) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=0} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ede8,
iov_len=72}]) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0, si_value={int=1308, ptr=0x51c}}) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0}) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=1} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ede8,
iov_len=72}]) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0, si_value={int=1308, ptr=0x51c}}) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0}) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
<<snip>>
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGTRAP, si_utime=0, si_stime=20} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ede8,
iov_len=72}]) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0, si_value={int=1308, ptr=0x51c}}) = 0
ptrace(PTRACE_GETSIGINFO, 1308, NULL, {si_signo=SIGTRAP, si_code=TRAP_HWBKPT,
si_pid=65688, si_uid=0}) = 0
ptrace(PTRACE_CONT, 1308, 0x1, SIG_0) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=1308, si_uid=1000,
si_status=SIGINT, si_utime=0, si_stime=20} ---
ptrace(PTRACE_GETREGSET, 1308, NT_PRSTATUS, [{iov_base=0xbe84ef68,
iov_len=72}]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10094, [0xbd7e609d]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_PEEKTEXT, 1308, 0x10098, [0xe1200070]) = 0
ptrace(PTRACE_KILL, 1308) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1308, si_uid=1000,
si_status=SIGKILL, si_utime=0, si_stime=20} ---
ptrace(PTRACE_KILL, 1308) = -1 ESRCH (No such process)
+++ exited with 0 +++
=====
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>From gdb-prs-return-22290-listarch-gdb-prs=sources.redhat.com@sourceware.org Tue Dec 26 04:15:35 2017
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22645] gdb hangs on 32-bit ARM armv7l at SIGTRAP from
"bkpt" instruction 0xe1200070
Date: Tue, 26 Dec 2017 04:15:00 -0000
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--- Comment #1 from John Reiser <jreiser at BitWagon dot com> ---
The same bad behavior also occurs when the bkpt is not the first instruction:
=====
.globl _start
_start:
nop
bkpt
nop
=====
In the past gdb has had trouble when the very first instruction after execve
generated a trap:
https://bugzilla.redhat.com/show_bug.cgi?id=162775
"gdb ignores SIGTRAP at entry address"
2008-03-10 [almost ten years ago]
but the revised test case above, where the SIGTRAP is at the second
instruction, still hangs under gdb.
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>From gdb-prs-return-22291-listarch-gdb-prs=sources.redhat.com@sourceware.org Wed Dec 27 05:34:53 2017
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From: "jreiser at BitWagon dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/22645] gdb hangs on 32-bit ARM armv7l at SIGTRAP from
"bkpt" instruction 0xe1200070
Date: Wed, 27 Dec 2017 05:34:00 -0000
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--- Comment #2 from John Reiser <jreiser at BitWagon dot com> ---
Contrasting with the similar "brk #0" (.word 0xd4200000) on 64-bit ARM aarch64:
gdb stops and reports SIGTRAP the first time (does not silently loop using
PTRACE_CONT) and strace shows
=====
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_TRAPPED, si_pid=9705, si_uid=1000,
si_status=SIGTRAP, si_utime=1, si_stime=0} ---
ptrace(PTRACE_GETREGSET, 9705, NT_PRSTATUS, [{iov_base=0xffffe5b28e88,
iov_len=272}]) = 0
ptrace(PTRACE_GETSIGINFO, 9705, NULL, {si_signo=SIGTRAP, si_code=TRAP_BRKPT,
si_pid=4194520, si_uid=0, si_value={int=-441282160, ptr=0xffffe5b29190}}) = 0
ptrace(PTRACE_PEEKTEXT, 9705, 0x4000d8, [0xd503201fd4200000]) = 0
ptrace(PTRACE_PEEKTEXT, 9705, 0x4000d8, [0xd503201fd4200000]) = 0
ptrace(PTRACE_PEEKTEXT, 9705, 0x4000d0, [0xd503201f155c8bda]) = 0
ptrace(PTRACE_PEEKTEXT, 9705, 0x4000d8, [0xd503201fd4200000]) = 0
=====
One notable difference is:
si_code=TRAP_BRKPT on 64-bit ARM
si_code=TRAP_HWBKPT on 32-bit ARM
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>From gdb-prs-return-22292-listarch-gdb-prs=sources.redhat.com@sourceware.org Thu Dec 28 21:09:38 2017
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From: "halbert at halwitz dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/22647] New: Tab completion hangs with a gcc7 LTO elf
Date: Thu, 28 Dec 2017 21:09:00 -0000
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Bug ID: 22647
Summary: Tab completion hangs with a gcc7 LTO elf
Product: gdb
Version: 8.0
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Created attachment 10701
--> https://sourceware.org/bugzilla/attachment.cgi?id=10701&action=edit
gdb-hang-gcc721.elf and gdb-ok-gcc631.elf
I have a an arm-none-eabi-gcc 7.2.1 .elf that causes gdb to hang when doing tab
completion.
Problem appears with various gdb's I tried:
1. arm-none-eabi-gdb 8.0.50-8.0.50.20171128-git. This gdb came with the GNU
Tools for Arm Embedded Processors 7-2017-q4-major release.
2. arm-none-eabi-gdb 7.2.1 20170904 (previous 2017 q2 ARM tools release)
3. gdb 7.11.1 (non-ARM) Ubuntu 7.11.1-0ubuntu1~16.5
A good and a bad .elf are attached in a .zip.
To reproduce, do:
$ gdb gdb-hang-gcc721.elf
(gdb) break mp_cal<tab>
When you press <tab>, gdb will start consuming 100% CPU. I waited for several
minutes with no effect. The process must be `kill -9`d to get rid of it. ^C
does not work.
I tried `set max-completions 5`, which works, and `50`, which still hangs.
The good .elf looks like this:
$ gdb gdb-ok-gcc631.elf
(gdb) break mp_cal<tab>l_
which completes with `l_` immediately (the symbol is still incomplete).
You can test this ARM .elf with x64 gdb; you don't need to use an ARM-specific
gdb.
Both .elf's are from the same large source tree. One was compiled with -flto
with arm-none-eabi-gcc 6.3.1, the other with -flto on7.2.1. If I turn off
-flto, the problem does not occur, so it's some issue with what -flto is
causing to be generated in the elf. Nevertheless, gdb shouldn't hang even if
the .elf is bad.
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>From gdb-prs-return-22293-listarch-gdb-prs=sources.redhat.com@sourceware.org Fri Dec 29 10:40:19 2017
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From: "dcb314 at hotmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug gdb/18119] gas/config/tc-arm.c:8874: bad if expression ?
Date: Fri, 29 Dec 2017 10:40:00 -0000
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--- Comment #1 from dcb <dcb314 at hotmail dot com> ---
Still broken a few years later:
config/tc-arm.c:9161:50: warning: bitwise comparison always evaluates to true
[-Wtautological-compare]
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>From gdb-prs-return-22294-listarch-gdb-prs=sources.redhat.com@sourceware.org Sun Dec 31 14:42:49 2017
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From: "simon.marchi at ericsson dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/19558] Trying to attach the same process twice borks
gdbserver
Date: Sun, 31 Dec 2017 14:42:00 -0000
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--- Comment #5 from Simon Marchi <simon.marchi at ericsson dot com> ---
Another consequence of the same bug, if you start gdbserver with --once,
gdbserver exits when an attach fails. I don't think that's right.
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^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2017-01-03 21:32 UTC | newest]
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2013-05-15 8:36 [Bug c++/15468] New: crash breakpoint.c:5940: internal-error: print_one_breakpoint_location ischdoepperdodrausse at gmail dot com
2013-05-15 17:25 ` [Bug c++/15468] " tromey at redhat dot com
2013-05-16 11:48 ` ischdoepperdodrausse at gmail dot com
2013-05-16 14:14 ` tromey at redhat dot com
2013-05-18 0:17 ` ischdoepperdodrausse at gmail dot com
2017-01-03 21:32 ` spencerbaugh at gmail dot com
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