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* [Bug c/39565] New: Static variable leaves undefined symbol in object file
@ 2009-03-26 17:51 edmar at freescale dot com
2009-03-27 9:20 ` [Bug target/39565] " rguenth at gcc dot gnu dot org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: edmar at freescale dot com @ 2009-03-26 17:51 UTC (permalink / raw)
To: gcc-bugs
Compiling the test case, produces undefined symbols codestrs_4 and codestrs_8,
which will result in a link error.
If the static is dropped or one of the cases in the switch statement is
removed, the object file does not have undefined symbols.
Test case:
static const union codestrs_t_4 {
struct {
char str_2[sizeof ("Illegal opcode")];
};
char str[0];
} codestrs_4 = { {"Illegal opcode"} };
static const union codestrs_t_8 {
struct {
char str_12[sizeof ("Integer divide by zero")];
};
char str[0];
} codestrs_8 = { {"Integer divide by zero"} };
const char *
psiginfo (int pinfo)
{
const char *base = ((void *)0);
switch (pinfo)
{
case 4: base = codestrs_4.str; break;
case 8: base = codestrs_8.str; break;
}
return base;
}
Compiled with:
gcc -O2 -c
objdump -t
Result:
cases.o: file format elf32-powerpc
SYMBOL TABLE:
00000000 l df *ABS* 00000000 cases.c
00000000 l d .text 00000000 .text
00000000 l d .data 00000000 .data
00000000 l d .bss 00000000 .bss
00000000 l O .data 00000014 CSWTCH.1
00000000 l d .note.GNU-stack 00000000 .note.GNU-stack
00000000 l d .comment 00000000 .comment
00000000 l d .gnu.attributes 00000000 .gnu.attributes
00000000 g F .text 00000024 psiginfo
00000000 *UND* 00000000 codestrs_4
00000000 *UND* 00000000 codestrs_8
--
Summary: Static variable leaves undefined symbol in object file
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: edmar at freescale dot com
GCC build triplet: powerpc-unknown-linux-gnu
GCC host triplet: powerpc-unknown-linux-gnu
GCC target triplet: powerpc-unknown-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
@ 2009-03-27 9:20 ` rguenth at gcc dot gnu dot org
2009-03-27 15:01 ` edmar at freescale dot com
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-03-27 9:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2009-03-27 09:19 -------
I get
t.o: file format elf32-i386
SYMBOL TABLE:
00000000 l df *ABS* 00000000 t.c
00000000 l d .text 00000000 .text
00000000 l d .data 00000000 .data
00000000 l d .bss 00000000 .bss
00000000 l O .rodata 0000000f codestrs_4
0000000f l O .rodata 00000017 codestrs_8
00000000 l d .rodata 00000000 .rodata
00000000 l d .note.GNU-stack 00000000 .note.GNU-stack
00000000 l d .comment 00000000 .comment
00000000 g F .text 00000022 psiginfo
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c |target
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
2009-03-27 9:20 ` [Bug target/39565] " rguenth at gcc dot gnu dot org
@ 2009-03-27 15:01 ` edmar at freescale dot com
2009-04-28 23:44 ` anmol at freescale dot com
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: edmar at freescale dot com @ 2009-03-27 15:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from edmar at freescale dot com 2009-03-27 15:01 -------
I noticed that too. On x86_64 there is no undefined symbol either.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
2009-03-27 9:20 ` [Bug target/39565] " rguenth at gcc dot gnu dot org
2009-03-27 15:01 ` edmar at freescale dot com
@ 2009-04-28 23:44 ` anmol at freescale dot com
2009-04-29 8:35 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: anmol at freescale dot com @ 2009-04-28 23:44 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from anmol at freescale dot com 2009-04-28 23:43 -------
I verified with native GCC on target: powerpc-unknown-linux-gnu on:
gcc version 4.5.0 20090423 (experimental) [trunk revision 146648] (GCC)
gcc version 4.4.1 20090424 (prerelease) [gcc-4_4-branch revision 146746] (GCC)
that this is no longer a problem.
I have submitted a testcase for the regression suite; please see:
http://gcc.gnu.org/ml/gcc-patches/2009-04/msg02296.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
` (2 preceding siblings ...)
2009-04-28 23:44 ` anmol at freescale dot com
@ 2009-04-29 8:35 ` rguenth at gcc dot gnu dot org
2009-04-29 12:06 ` bje at gcc dot gnu dot org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-04-29 8:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2009-04-29 08:34 -------
Subject: Bug 39565
Author: rguenth
Date: Wed Apr 29 08:34:21 2009
New Revision: 146928
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146928
Log:
2009-04-29 Anmol P. Paralkar <anmol@freescale.com>
PR target/39565
* gcc.dg/pr39565.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/pr39565.c
Modified:
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
` (3 preceding siblings ...)
2009-04-29 8:35 ` rguenth at gcc dot gnu dot org
@ 2009-04-29 12:06 ` bje at gcc dot gnu dot org
2009-04-29 14:55 ` hjl at gcc dot gnu dot org
2009-04-29 17:29 ` anmol at freescale dot com
6 siblings, 0 replies; 8+ messages in thread
From: bje at gcc dot gnu dot org @ 2009-04-29 12:06 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from bje at gcc dot gnu dot org 2009-04-29 12:06 -------
I think this PR can now be closed.
--
bje at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.4.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
` (4 preceding siblings ...)
2009-04-29 12:06 ` bje at gcc dot gnu dot org
@ 2009-04-29 14:55 ` hjl at gcc dot gnu dot org
2009-04-29 17:29 ` anmol at freescale dot com
6 siblings, 0 replies; 8+ messages in thread
From: hjl at gcc dot gnu dot org @ 2009-04-29 14:55 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from hjl at gcc dot gnu dot org 2009-04-29 14:55 -------
Subject: Bug 39565
Author: hjl
Date: Wed Apr 29 14:54:54 2009
New Revision: 146972
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=146972
Log:
2009-04-29 H.J. Lu <hongjiu.lu@intel.com>
Backport from mainline:
2009-04-29 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39941
* gcc.c-torture/compile/pr39941.c: New testcase.
2009-04-29 Anmol P. Paralkar <anmol@freescale.com>
PR target/39565
* gcc.dg/pr39565.c: New testcase.
2009-04-28 Richard Guenther <rguenther@suse.de>
PR middle-end/39937
* gfortran.fortran-torture/compile/pr39937.f: New testcase.
Added:
branches/gcc-4_4-branch/gcc/testsuite/gcc.c-torture/compile/pr39941.c
- copied unchanged from r146971,
trunk/gcc/testsuite/gcc.c-torture/compile/pr39941.c
branches/gcc-4_4-branch/gcc/testsuite/gcc.dg/pr39565.c
- copied unchanged from r146971, trunk/gcc/testsuite/gcc.dg/pr39565.c
branches/gcc-4_4-branch/gcc/testsuite/gfortran.fortran-torture/compile/pr39937.f
- copied unchanged from r146971,
trunk/gcc/testsuite/gfortran.fortran-torture/compile/pr39937.f
Modified:
branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug target/39565] Static variable leaves undefined symbol in object file
2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
` (5 preceding siblings ...)
2009-04-29 14:55 ` hjl at gcc dot gnu dot org
@ 2009-04-29 17:29 ` anmol at freescale dot com
6 siblings, 0 replies; 8+ messages in thread
From: anmol at freescale dot com @ 2009-04-29 17:29 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from anmol at freescale dot com 2009-04-29 17:29 -------
Respun testcase per advice from Joseph S. Myers:
http://gcc.gnu.org/ml/gcc-patches/2009-04/msg02363.html
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39565
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2009-03-26 17:51 [Bug c/39565] New: Static variable leaves undefined symbol in object file edmar at freescale dot com
2009-03-27 9:20 ` [Bug target/39565] " rguenth at gcc dot gnu dot org
2009-03-27 15:01 ` edmar at freescale dot com
2009-04-28 23:44 ` anmol at freescale dot com
2009-04-29 8:35 ` rguenth at gcc dot gnu dot org
2009-04-29 12:06 ` bje at gcc dot gnu dot org
2009-04-29 14:55 ` hjl at gcc dot gnu dot org
2009-04-29 17:29 ` anmol at freescale dot com
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