public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions
@ 2006-03-28 18:29 ed at catmur dot co dot uk
2006-03-28 18:31 ` [Bug debug/26908] " ed at catmur dot co dot uk
` (7 more replies)
0 siblings, 8 replies; 9+ messages in thread
From: ed at catmur dot co dot uk @ 2006-03-28 18:29 UTC (permalink / raw)
To: gcc-bugs
foo.c:
asm (
".globl bar\n\t"
"bar:\n\t"
"movl $5, %eax\n\t"
"ret"
);
main() {
return bar();
}
$ gcc -g2 foo.c; ./a.out; echo $?
5
$ gcc foo.c -g3; ./a.out; echo $?
Segmentation fault
139
Disassembly of the a.out compiled with -g3 gives:
(gdb) disass main
Dump of assembler code for function main:
0x08048364 <main+0>: push %ebp
0x08048365 <main+1>: mov %esp,%ebp
0x08048367 <main+3>: sub $0x8,%esp
0x0804836a <main+6>: and $0xfffffff0,%esp
0x0804836d <main+9>: mov $0x0,%eax
0x08048372 <main+14>: add $0xf,%eax
0x08048375 <main+17>: add $0xf,%eax
0x08048378 <main+20>: shr $0x4,%eax
0x0804837b <main+23>: shl $0x4,%eax
0x0804837e <main+26>: sub %eax,%esp
0x08048380 <main+28>: call 0x4852
0x08048385 <main+33>: leave
0x08048386 <main+34>: ret
End of assembler dump.
Note the call to an invalid location; it is this that causes the segfault.
Seen in the wild in tetex-3.0 (uses asm functions in metafont).
Workaround: don't use -g3.
I will attach gcc -g3 -S foo.c output.
--
Summary: -g3 (-ggdb3) emits broken calls to asm-defined functions
Product: gcc
Version: 3.4.6
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ed at catmur dot co dot uk
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
@ 2006-03-28 18:31 ` ed at catmur dot co dot uk
2006-03-28 18:45 ` pinskia at gcc dot gnu dot org
` (6 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ed at catmur dot co dot uk @ 2006-03-28 18:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from ed at catmur dot co dot uk 2006-03-28 18:31 -------
Created an attachment (id=11141)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11141&action=view)
foo.s
Output of gcc -g3 -S foo.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
2006-03-28 18:31 ` [Bug debug/26908] " ed at catmur dot co dot uk
@ 2006-03-28 18:45 ` pinskia at gcc dot gnu dot org
2006-03-28 19:15 ` ed at catmur dot co dot uk
` (5 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-03-28 18:45 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-03-28 18:45 -------
There is no garentee that bar will be in the text section.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
2006-03-28 18:31 ` [Bug debug/26908] " ed at catmur dot co dot uk
2006-03-28 18:45 ` pinskia at gcc dot gnu dot org
@ 2006-03-28 19:15 ` ed at catmur dot co dot uk
2008-11-21 1:29 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: ed at catmur dot co dot uk @ 2006-03-28 19:15 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from ed at catmur dot co dot uk 2006-03-28 19:15 -------
OK, so it's tetex that's broken. Sorry for the invalid report.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
` (2 preceding siblings ...)
2006-03-28 19:15 ` ed at catmur dot co dot uk
@ 2008-11-21 1:29 ` pinskia at gcc dot gnu dot org
2008-11-21 2:17 ` zuogang at huawei dot com
` (3 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-11-21 1:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2008-11-21 01:27 -------
*** Bug 38186 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |zuogang at huawei dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
` (3 preceding siblings ...)
2008-11-21 1:29 ` pinskia at gcc dot gnu dot org
@ 2008-11-21 2:17 ` zuogang at huawei dot com
2008-12-28 2:36 ` pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
7 siblings, 0 replies; 9+ messages in thread
From: zuogang at huawei dot com @ 2008-11-21 2:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from zuogang at huawei dot com 2008-11-21 02:15 -------
(In reply to comment #4)
> *** Bug 38186 has been marked as a duplicate of this bug. ***
I post the bug 38186;
I want to know why the asm-defined func is placed in .debug_macinfo section, is
it correct?
info from the obj file generated by option -g3
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf
Al
[ 0] NULL 00000000 000000 000000 00 0 0
0
[ 1] .text PROGBITS 00000000 000034 001b68 00 AX 0 0
4
...
[10] .debug_macinfo PROGBITS 00000000 004567 0a8a53 00 0 0
1
...
Symbol table '.symtab' contains 64 entries:
Num: Value Size Type Bind Vis Ndx Name
0: 00000000 0 NOTYPE LOCAL DEFAULT UND
...
9: 000a8929 0 NOTYPE LOCAL DEFAULT 10 MON_OnCallGetIndex
10: 000a8939 0 NOTYPE LOCAL DEFAULT 10 MON_OnRetGetIndex
...
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
` (4 preceding siblings ...)
2008-11-21 2:17 ` zuogang at huawei dot com
@ 2008-12-28 2:36 ` pinskia at gcc dot gnu dot org
2008-12-29 12:29 ` bonzini at gnu dot org
2008-12-29 12:31 ` bonzini at gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-12-28 2:36 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from pinskia at gcc dot gnu dot org 2008-12-28 02:33 -------
*** Bug 33932 has been marked as a duplicate of this bug. ***
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |stsp at users dot
| |sourceforge dot net
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
` (5 preceding siblings ...)
2008-12-28 2:36 ` pinskia at gcc dot gnu dot org
@ 2008-12-29 12:29 ` bonzini at gnu dot org
2008-12-29 12:31 ` bonzini at gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: bonzini at gnu dot org @ 2008-12-29 12:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from bonzini at gnu dot org 2008-12-29 12:25 -------
reopening...
--
bonzini at gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
* [Bug debug/26908] -g3 (-ggdb3) emits broken calls to asm-defined functions
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
` (6 preceding siblings ...)
2008-12-29 12:29 ` bonzini at gnu dot org
@ 2008-12-29 12:31 ` bonzini at gnu dot org
7 siblings, 0 replies; 9+ messages in thread
From: bonzini at gnu dot org @ 2008-12-29 12:31 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from bonzini at gnu dot org 2008-12-29 12:26 -------
... to close as duplicate (since there's some discussion on the other bug)
*** This bug has been marked as a duplicate of 33932 ***
--
bonzini at gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26908
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2008-12-29 12:31 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2006-03-28 18:29 [Bug debug/26908] New: -g3 (-ggdb3) emits broken calls to asm-defined functions ed at catmur dot co dot uk
2006-03-28 18:31 ` [Bug debug/26908] " ed at catmur dot co dot uk
2006-03-28 18:45 ` pinskia at gcc dot gnu dot org
2006-03-28 19:15 ` ed at catmur dot co dot uk
2008-11-21 1:29 ` pinskia at gcc dot gnu dot org
2008-11-21 2:17 ` zuogang at huawei dot com
2008-12-28 2:36 ` pinskia at gcc dot gnu dot org
2008-12-29 12:29 ` bonzini at gnu dot org
2008-12-29 12:31 ` bonzini at gnu dot org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).