* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
@ 2012-01-06 17:22 ` nickc at redhat dot com
2012-01-09 14:56 ` mjw at redhat dot com
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From: nickc at redhat dot com @ 2012-01-06 17:22 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
--- Comment #1 from Nick Clifton <nickc at redhat dot com> 2012-01-06 17:22:07 UTC ---
FYI I have created a Binutils PR for this issue as well:
http://sourceware.org/bugzilla/show_bug.cgi?id=13569
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
2012-01-06 17:22 ` [Bug breakpoints/13568] " nickc at redhat dot com
@ 2012-01-09 14:56 ` mjw at redhat dot com
2012-01-25 17:46 ` tromey at redhat dot com
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: mjw at redhat dot com @ 2012-01-09 14:56 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
Mark Wielaard <mjw at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mjw at redhat dot com
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
2012-01-06 17:22 ` [Bug breakpoints/13568] " nickc at redhat dot com
2012-01-09 14:56 ` mjw at redhat dot com
@ 2012-01-25 17:46 ` tromey at redhat dot com
2012-01-26 9:57 ` nickc at redhat dot com
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: tromey at redhat dot com @ 2012-01-25 17:46 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
CC| |tromey at redhat dot com
--- Comment #2 from Tom Tromey <tromey at redhat dot com> 2012-01-25 17:44:35 UTC ---
I couldn't reproduce with gcc 4.5 and CVS head gdb; see appended transcript.
If it still fails for you, could you attach an executable?
That might help.
barimba. gcc --version
gcc (GCC) 4.5.1 20100430 (prerelease) [gcc-4_5-branch revision 158946]
Copyright (C) 2010 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.
barimba. gcc -g3 -ffunction-sections -Wl,--gc-sections a.c -o prbarimba.
~/gnu/baseline-gdb/build/gdb/gdb -nw ./pr
GNU gdb (GDB) 7.4.50.20120125-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 "x86_64-unknown-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/tromey/gnu/PRS/gdb13568/pr...done.
(gdb) b a.c:6
No line 6 in file "a.c".
Make breakpoint pending on future shared library load? (y or [n]) n
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
` (2 preceding siblings ...)
2012-01-25 17:46 ` tromey at redhat dot com
@ 2012-01-26 9:57 ` nickc at redhat dot com
2012-01-26 14:56 ` tromey at redhat dot com
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7 siblings, 0 replies; 9+ messages in thread
From: nickc at redhat dot com @ 2012-01-26 9:57 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
--- Comment #3 from Nick Clifton <nickc at redhat dot com> 2012-01-26 09:56:29 UTC ---
Created attachment 6177
--> http://sourceware.org/bugzilla/attachment.cgi?id=6177
Executable to demonstrate the problem
% gdb -nw a.bad
GNU gdb (GDB) 7.4.50.20120126-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 "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /media/Devo/current/i686-pc-linux-gnu/tests/a.bad...done.
(gdb) break a.c:6
Bus error (core dumped)
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
` (3 preceding siblings ...)
2012-01-26 9:57 ` nickc at redhat dot com
@ 2012-01-26 14:56 ` tromey at redhat dot com
2012-01-26 15:29 ` tromey at redhat dot com
` (2 subsequent siblings)
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From: tromey at redhat dot com @ 2012-01-26 14:56 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #4 from Tom Tromey <tromey at redhat dot com> 2012-01-26 14:56:10 UTC ---
Thanks.
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
` (4 preceding siblings ...)
2012-01-26 14:56 ` tromey at redhat dot com
@ 2012-01-26 15:29 ` tromey at redhat dot com
2012-01-30 20:11 ` cvs-commit at gcc dot gnu.org
2012-01-30 20:13 ` tromey at redhat dot com
7 siblings, 0 replies; 9+ messages in thread
From: tromey at redhat dot com @ 2012-01-26 15:29 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at sourceware |tromey at redhat dot com
|dot org |
--- Comment #5 from Tom Tromey <tromey at redhat dot com> 2012-01-26 15:27:59 UTC ---
The bug is that there is a recursive include in the .debug_macro section.
This causes gdb to overrun the stack.
I'm testing a fix.
Contents of the .debug_macro section:
Offset: 0x0
Version: 4
Offset size: 4
Offset into .debug_line: 0x0
DW_MACRO_GNU_transparent_include - offset : 0x0
DW_MACRO_GNU_start_file - lineno: 0 filenum: 1 filename: a.c
DW_MACRO_GNU_end_file
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
` (5 preceding siblings ...)
2012-01-26 15:29 ` tromey at redhat dot com
@ 2012-01-30 20:11 ` cvs-commit at gcc dot gnu.org
2012-01-30 20:13 ` tromey at redhat dot com
7 siblings, 0 replies; 9+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2012-01-30 20:11 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
--- Comment #6 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-01-30 20:10:40 UTC ---
CVSROOT: /cvs/src
Module name: src
Changes by: tromey@sourceware.org 2012-01-30 20:10:33
Modified files:
gdb : ChangeLog dwarf2read.c
Log message:
PR breakpoints/13568:
* dwarf2read.c (dwarf_decode_macro_bytes): Add 'include_hash'
argument. Check for recursive includes.
(dwarf_decode_macros): Create an include hash.
Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.13789&r2=1.13790
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/dwarf2read.c.diff?cvsroot=src&r1=1.610&r2=1.611
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* [Bug breakpoints/13568] GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection
2012-01-06 16:00 [Bug breakpoints/13568] New: GDB can trigger a SIGBUS putting a breakpoint on a source line removed by linker garbage collection nickc at redhat dot com
` (6 preceding siblings ...)
2012-01-30 20:11 ` cvs-commit at gcc dot gnu.org
@ 2012-01-30 20:13 ` tromey at redhat dot com
7 siblings, 0 replies; 9+ messages in thread
From: tromey at redhat dot com @ 2012-01-30 20:13 UTC (permalink / raw)
To: gdb-prs
http://sourceware.org/bugzilla/show_bug.cgi?id=13568
Tom Tromey <tromey at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
Target Milestone|--- |7.5
--- Comment #7 from Tom Tromey <tromey at redhat dot com> 2012-01-30 20:12:33 UTC ---
Fixed.
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