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* [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2
@ 2005-05-19 0:42 flash at pobox dot com
2005-05-19 1:20 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] " pinskia at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 7+ messages in thread
From: flash at pobox dot com @ 2005-05-19 0:42 UTC (permalink / raw)
To: gcc-bugs
Compiling the C Torture file "weak-6.c" (below) gives an error at O0 and O1, as seemed to be expected
by the author. At O2, there's no error or warning.
214> gcc -O2 -c ../c/noerror/GPL/3.3.2/nowarn/bulk/gcc.dg/weak/weak-6.c
<no error>
215> gcc -O1 -c ../c/noerror/GPL/3.3.2/nowarn/bulk/gcc.dg/weak/weak-6.c
../c/noerror/GPL/3.3.2/nowarn/bulk/gcc.dg/weak/weak-6.c:4: error: weak declaration of `foo' must
precede definition
weak-6.c:
/* { dg-do compile } */
extern void * foo (void);
void * foo (void) { return (void *)foo; } /* { dg-error "precede" } */
#pragma weak foo
Also occurs with arm-softfloat-linux-gnu-g++ 3.4.1.
With Apple gcc version 3.3, I don't get the error at any optimization level.
____________________________________
Here's the save-temps output:
225> gcc -v -save-temps -O2 -c ../c/noerror/GPL/3.3.2/nowarn/bulk/gcc.dg/weak/weak-6.c
Reading specs from /usr/lib/gcc-lib/i586-suse-linux/3.3.4/specs
Configured with: ../configure --enable-threads=posix --prefix=/usr --with-local-prefix=/usr/local --
infodir=/usr/share/info --mandir=/usr/share/man --enable-languages=c,c++,f77,objc,java,ada --
disable-checking --libdir=/usr/lib --enable-libgcj --with-gxx-include-dir=/usr/include/g++ --with-
slibdir=/lib --with-system-zlib --enable-shared --enable-__cxa_atexit i586-suse-linux
Thread model: posix
gcc version 3.3.4 (pre 3.3.5 20040809)
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/cc1 -E -quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=3
-D__GNUC_PATCHLEVEL__=4 ../c/noerror/GPL/3.3.2/nowarn/bulk/gcc.dg/weak/weak-6.c -O2 weak
-6.i
#include "..." search starts here:
#include <...> search starts here:
/usr/local/include
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/include
/usr/i586-suse-linux/include
/usr/include
End of search list.
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/cc1 -fpreprocessed weak-6.i -quiet -dumpbase weak-6.c
-auxbase weak-6 -O2 -version -o weak-6.s
GNU C version 3.3.4 (pre 3.3.5 20040809) (i586-suse-linux)
compiled by GNU C version 3.3.4 (pre 3.3.5 20040809).
GGC heuristics: --param ggc-min-expand=81 --param ggc-min-heapsize=96968
/usr/lib/gcc-lib/i586-suse-linux/3.3.4/../../../../i586-suse-linux/bin/as -V -Qy -o weak-6.o weak
-6.s
GNU assembler version 2.15.91.0.2 (i586-suse-linux) using BFD version 2.15.91.0.2 20040727 (SuSE
Linux)
--
Summary: "weak declaration must precede definition" error missing
at >= O2
Product: gcc
Version: 3.3.4
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: flash at pobox dot com
CC: gcc-bugs at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O2
2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
@ 2005-05-19 1:20 ` pinskia at gcc dot gnu dot org
2005-05-19 17:24 ` mmitchel at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-05-19 1:20 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-05-19 01:19 -------
Confirmed, unit-at-a-time related.
--
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |accepts-invalid, diagnostic
Known to fail| |3.4.0 4.0.0 4.1.0
Known to work| |3.3.3
Last reconfirmed|0000-00-00 00:00:00 |2005-05-19 01:19:55
date| |
Summary|"weak declaration must |[3.4/4.0/4.1 Regression]
|precede definition" error |[unit-at-a-time] "weak
|missing at >= O2 |declaration must precede
| |definition" error missing at
| |>= O2
Target Milestone|--- |3.4.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O2
2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
2005-05-19 1:20 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] " pinskia at gcc dot gnu dot org
@ 2005-05-19 17:24 ` mmitchel at gcc dot gnu dot org
2005-07-01 19:51 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1 pinskia at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-05-19 17:24 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.4 |3.4.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1
2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
2005-05-19 1:20 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] " pinskia at gcc dot gnu dot org
2005-05-19 17:24 ` mmitchel at gcc dot gnu dot org
@ 2005-07-01 19:51 ` pinskia at gcc dot gnu dot org
2005-07-22 22:08 ` pinskia at gcc dot gnu dot org
2005-09-27 16:02 ` mmitchel at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-01 19:51 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-01 19:50 -------
: Search converges between 2003-09-04-trunk (#342) and 2003-09-05-trunk (#343).
That is at -O2, -O3 we always accepted the code.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1
2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
` (2 preceding siblings ...)
2005-07-01 19:51 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1 pinskia at gcc dot gnu dot org
@ 2005-07-22 22:08 ` pinskia at gcc dot gnu dot org
2005-09-27 16:02 ` mmitchel at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2005-07-22 22:08 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-22 21:12 -------
Moving to 4.0.2 pre Mark.
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.4.5 |4.0.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1
2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
` (3 preceding siblings ...)
2005-07-22 22:08 ` pinskia at gcc dot gnu dot org
@ 2005-09-27 16:02 ` mmitchel at gcc dot gnu dot org
4 siblings, 0 replies; 7+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-09-27 16:02 UTC (permalink / raw)
To: gcc-bugs
--
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.0.2 |4.0.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1
[not found] <bug-21659-8581@http.gcc.gnu.org/bugzilla/>
@ 2005-10-31 3:38 ` mmitchel at gcc dot gnu dot org
0 siblings, 0 replies; 7+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2005-10-31 3:38 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from mmitchel at gcc dot gnu dot org 2005-10-31 03:38 -------
This will never be release-critical.
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21659
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2005-10-31 3:38 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2005-05-19 0:42 [Bug c/21659] New: "weak declaration must precede definition" error missing at >= O2 flash at pobox dot com
2005-05-19 1:20 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] " pinskia at gcc dot gnu dot org
2005-05-19 17:24 ` mmitchel at gcc dot gnu dot org
2005-07-01 19:51 ` [Bug c/21659] [3.4/4.0/4.1 Regression] [unit-at-a-time] "weak declaration must precede definition" error missing at >= O1 pinskia at gcc dot gnu dot org
2005-07-22 22:08 ` pinskia at gcc dot gnu dot org
2005-09-27 16:02 ` mmitchel at gcc dot gnu dot org
[not found] <bug-21659-8581@http.gcc.gnu.org/bugzilla/>
2005-10-31 3:38 ` mmitchel at gcc dot gnu dot org
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