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* [Bug c/105960] New: Crash in 32-bit mode
@ 2022-06-13 19:54 terra at gnome dot org
2022-06-13 20:00 ` [Bug target/105960] " pinskia at gcc dot gnu.org
` (12 more replies)
0 siblings, 13 replies; 14+ messages in thread
From: terra at gnome dot org @ 2022-06-13 19:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
Bug ID: 105960
Summary: Crash in 32-bit mode
Product: gcc
Version: 12.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: terra at gnome dot org
Target Milestone: ---
Created attachment 53130
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53130&action=edit
Source files and compile script
The attached archive shows a crash when running 32-bit binaries compiled with
gcc 12.1
I am preliminarily blaming the C compiler.
0. Unpack tar file
1. Edit "compile" to point at the desired compiler
2. ./compile
3. ./crash32
Expected: immediate return
Observed: Segmentation fault (core dumped)
(gdb) where
#0 0xf7fc73d0 in *ABS*@plt () from /home/welinder/crash32/liboink32.so
#1 0x0804841d in main ()
Observations (probably more "anecdote" than "data"):
* Doesn't happen in 64-bit mode
* Doesn't happen without optimization
* The shared library appears to be a required part
* The use target_clones appears to be a required part
* This did not happen with gcc 11.1
# uname -a
Linux xxxxxxxxxx 5.3.18-150300.59.63-default #1 SMP Tue Apr 5 12:47:31 UTC 2022
(d77db66) x86_64 x86_64 x86_64 GNU/Linux
# /usr/local/products/gcc/12.1.0/bin/gcc --version
gcc (GCC) 12.1.0
Copyright (C) 2022 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.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
@ 2022-06-13 20:00 ` pinskia at gcc dot gnu.org
2022-06-13 20:00 ` pinskia at gcc dot gnu.org
` (11 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-06-13 20:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
```
COMPILE="$CC -m32 -O2 -I. -Wall"
# Preprocessed files were created thus:
# $COMPILE -E crash32.c > crash32-preprocessed.c
# $COMPILE -E expref.c > expref-preprocessed.c
$COMPILE -c -o crash32.o crash32.c
$COMPILE -c -o expref.o expref.c
$CC -m32 -o liboink32.so -shared expref.o
$CC -m32 -o crash32 -g crash32.o $PWD/liboink32.so -lm
```
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
2022-06-13 20:00 ` [Bug target/105960] " pinskia at gcc dot gnu.org
@ 2022-06-13 20:00 ` pinskia at gcc dot gnu.org
2022-06-13 20:06 ` terra at gnome dot org
` (10 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-06-13 20:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
> $COMPILE -c -o crash32.o crash32.c
> $COMPILE -c -o expref.o expref.c
> $CC -m32 -o liboink32.so -shared expref.o
You didn't use -fPIC which is required if you are compiling a shared library.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
2022-06-13 20:00 ` [Bug target/105960] " pinskia at gcc dot gnu.org
2022-06-13 20:00 ` pinskia at gcc dot gnu.org
@ 2022-06-13 20:06 ` terra at gnome dot org
2022-06-13 20:08 ` terra at gnome dot org
` (9 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: terra at gnome dot org @ 2022-06-13 20:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
M Welinder <terra at gnome dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |---
--- Comment #3 from M Welinder <terra at gnome dot org> ---
This happens with -fPIC added to COMPILE too. (It got dropped somewhere in the
minimization of the sample.)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (2 preceding siblings ...)
2022-06-13 20:06 ` terra at gnome dot org
@ 2022-06-13 20:08 ` terra at gnome dot org
2022-06-14 8:30 ` rguenth at gcc dot gnu.org
` (8 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: terra at gnome dot org @ 2022-06-13 20:08 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #4 from M Welinder <terra at gnome dot org> ---
And added to the link lines too, btw.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (3 preceding siblings ...)
2022-06-13 20:08 ` terra at gnome dot org
@ 2022-06-14 8:30 ` rguenth at gcc dot gnu.org
2022-06-14 8:31 ` [Bug target/105960] [12/13 Regression] " rguenth at gcc dot gnu.org
` (7 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-06-14 8:30 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|x86_64 |i?86-*-*
Last reconfirmed| |2022-06-14
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
CC| |hjl.tools at gmail dot com
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed. Something is wrong with either ld.so or GCC. We end up with
.globl exp_ref
.type exp_ref, @function
exp_ref:
.LFB1:
.cfi_startproc
pushl %ebx
.cfi_def_cfa_offset 8
.cfi_offset 3, -8
popl %ebx
.cfi_restore 3
.cfi_def_cfa_offset 4
jmp expfull_ref@PLT
^^^ this crashes
.type expfull_ref, @gnu_indirect_function
.set expfull_ref,expfull_ref.resolver
.type expfull_ref.resolver, @function
expfull_ref.resolver:
.LFB4:
.cfi_startproc
pushl %ebx
but expfull_ref isn't .globl!?
#define TARGET_CLONES __attribute__((target_clones("default","fma")))
TARGET_CLONES
static inline double
expfull_ref(double x)
{
return __builtin_pow(x, 0.1234);
}
double
exp_ref(double x)
{
return expfull_ref(x);
}
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (4 preceding siblings ...)
2022-06-14 8:30 ` rguenth at gcc dot gnu.org
@ 2022-06-14 8:31 ` rguenth at gcc dot gnu.org
2022-06-14 14:18 ` hjl.tools at gmail dot com
` (6 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: rguenth at gcc dot gnu.org @ 2022-06-14 8:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Keywords| |needs-bisection, wrong-code
Summary|Crash in 32-bit mode |[12/13 Regression] Crash in
| |32-bit mode
Known to work| |11.3.0
Known to fail| |12.1.0
Target Milestone|--- |12.2
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (5 preceding siblings ...)
2022-06-14 8:31 ` [Bug target/105960] [12/13 Regression] " rguenth at gcc dot gnu.org
@ 2022-06-14 14:18 ` hjl.tools at gmail dot com
2022-06-14 15:02 ` hjl.tools at gmail dot com
` (5 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: hjl.tools at gmail dot com @ 2022-06-14 14:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
This is caused by r12-5771.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (6 preceding siblings ...)
2022-06-14 14:18 ` hjl.tools at gmail dot com
@ 2022-06-14 15:02 ` hjl.tools at gmail dot com
2022-06-14 17:22 ` wwcsmail at gmail dot com
` (4 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: hjl.tools at gmail dot com @ 2022-06-14 15:02 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot com
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> ---
Created attachment 53135
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53135&action=edit
A patch
Try this.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (7 preceding siblings ...)
2022-06-14 15:02 ` hjl.tools at gmail dot com
@ 2022-06-14 17:22 ` wwcsmail at gmail dot com
2022-06-20 15:26 ` cvs-commit at gcc dot gnu.org
` (3 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: wwcsmail at gmail dot com @ 2022-06-14 17:22 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
Wolfgang Wander <wwcsmail at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |wwcsmail at gmail dot com
--- Comment #8 from Wolfgang Wander <wwcsmail at gmail dot com> ---
Thanks H.J,
tried and this indeed fixes the issue!
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (8 preceding siblings ...)
2022-06-14 17:22 ` wwcsmail at gmail dot com
@ 2022-06-20 15:26 ` cvs-commit at gcc dot gnu.org
2022-06-21 17:45 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-06-20 15:26 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #9 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:fe9765c0b97e6b4ce2cd226631d329fc05ba2aa5
commit r13-1180-gfe9765c0b97e6b4ce2cd226631d329fc05ba2aa5
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Jun 14 08:20:16 2022 -0700
i386: Disallow sibcall for calling ifunc functions with PIC register
Disallow siball when calling ifunc functions with PIC register so that
PIC register can be restored.
gcc/
PR target/105960
* config/i386/i386.cc (ix86_function_ok_for_sibcall): Return
false if PIC register is used when calling ifunc functions.
gcc/testsuite/
PR target/105960
* gcc.target/i386/pr105960.c: New test.
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (9 preceding siblings ...)
2022-06-20 15:26 ` cvs-commit at gcc dot gnu.org
@ 2022-06-21 17:45 ` cvs-commit at gcc dot gnu.org
2022-07-15 9:00 ` marxin at gcc dot gnu.org
2022-07-15 18:07 ` hjl.tools at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-06-21 17:45 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:
https://gcc.gnu.org/g:2474c8e09a93027cde39ecb6a53742142c8496ed
commit r12-8501-g2474c8e09a93027cde39ecb6a53742142c8496ed
Author: H.J. Lu <hjl.tools@gmail.com>
Date: Tue Jun 14 08:20:16 2022 -0700
i386: Disallow sibcall for calling ifunc functions with PIC register
Disallow siball when calling ifunc functions with PIC register so that
PIC register can be restored.
gcc/
PR target/105960
* config/i386/i386.cc (ix86_function_ok_for_sibcall): Return
false if PIC register is used when calling ifunc functions.
gcc/testsuite/
PR target/105960
* gcc.target/i386/pr105960.c: New test.
(cherry picked from commit fe9765c0b97e6b4ce2cd226631d329fc05ba2aa5)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (10 preceding siblings ...)
2022-06-21 17:45 ` cvs-commit at gcc dot gnu.org
@ 2022-07-15 9:00 ` marxin at gcc dot gnu.org
2022-07-15 18:07 ` hjl.tools at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: marxin at gcc dot gnu.org @ 2022-07-15 9:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
--- Comment #11 from Martin Liška <marxin at gcc dot gnu.org> ---
Can we close it now?
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Bug target/105960] [12/13 Regression] Crash in 32-bit mode
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
` (11 preceding siblings ...)
2022-07-15 9:00 ` marxin at gcc dot gnu.org
@ 2022-07-15 18:07 ` hjl.tools at gmail dot com
12 siblings, 0 replies; 14+ messages in thread
From: hjl.tools at gmail dot com @ 2022-07-15 18:07 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105960
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> ---
Fixed.
^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2022-07-15 18:07 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-06-13 19:54 [Bug c/105960] New: Crash in 32-bit mode terra at gnome dot org
2022-06-13 20:00 ` [Bug target/105960] " pinskia at gcc dot gnu.org
2022-06-13 20:00 ` pinskia at gcc dot gnu.org
2022-06-13 20:06 ` terra at gnome dot org
2022-06-13 20:08 ` terra at gnome dot org
2022-06-14 8:30 ` rguenth at gcc dot gnu.org
2022-06-14 8:31 ` [Bug target/105960] [12/13 Regression] " rguenth at gcc dot gnu.org
2022-06-14 14:18 ` hjl.tools at gmail dot com
2022-06-14 15:02 ` hjl.tools at gmail dot com
2022-06-14 17:22 ` wwcsmail at gmail dot com
2022-06-20 15:26 ` cvs-commit at gcc dot gnu.org
2022-06-21 17:45 ` cvs-commit at gcc dot gnu.org
2022-07-15 9:00 ` marxin at gcc dot gnu.org
2022-07-15 18:07 ` hjl.tools at gmail dot com
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