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* [Bug c/50179] New: wrong "set but not used" warning
@ 2011-08-24 17:25 aldot at gcc dot gnu.org
2011-08-25 10:26 ` [Bug c/50179] " jakub at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: aldot at gcc dot gnu.org @ 2011-08-24 17:25 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179
Bug #: 50179
Summary: wrong "set but not used" warning
Classification: Unclassified
Product: gcc
Version: 4.6.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: aldot@gcc.gnu.org
To me it looks like the warning below is not correct. The variable is in fact
used.
$ gcc-4.6 -c -o bug.o bug.c -Wall
bug.c: In function ‘huh’:
bug.c:5:15: warning: variable ‘b__’ set but not used
[-Wunused-but-set-variable]
$ cat bug.c
#include <stdio.h>
void huh(void) {
printf("%s", (__extension__(
{
static char b__[129];
b__[0] = 1;
b__[1] = 2;
b__[2] = 0;
b__;
}))
);
}
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug c/50179] wrong "set but not used" warning 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org @ 2011-08-25 10:26 ` jakub at gcc dot gnu.org 2011-08-25 10:33 ` [Bug c/50179] [4.6/4.7 Regression] " jakub at gcc dot gnu.org ` (3 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-25 10:26 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Last reconfirmed| |2011-08-25 AssignedTo|unassigned at gcc dot |jakub at gcc dot gnu.org |gnu.org | Ever Confirmed|0 |1 --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-25 10:25:17 UTC --- Created attachment 25098 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25098 gcc47-pr50179.patch Untested fix. ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/50179] [4.6/4.7 Regression] wrong "set but not used" warning 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org 2011-08-25 10:26 ` [Bug c/50179] " jakub at gcc dot gnu.org @ 2011-08-25 10:33 ` jakub at gcc dot gnu.org 2011-08-26 14:48 ` jakub at gcc dot gnu.org ` (2 subsequent siblings) 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-25 10:33 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|--- |4.6.2 Summary|wrong "set but not used" |[4.6/4.7 Regression] wrong |warning |"set but not used" warning ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/50179] [4.6/4.7 Regression] wrong "set but not used" warning 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org 2011-08-25 10:26 ` [Bug c/50179] " jakub at gcc dot gnu.org 2011-08-25 10:33 ` [Bug c/50179] [4.6/4.7 Regression] " jakub at gcc dot gnu.org @ 2011-08-26 14:48 ` jakub at gcc dot gnu.org 2011-08-26 14:54 ` jakub at gcc dot gnu.org 2011-08-26 16:36 ` jakub at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-26 14:48 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179 --- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-26 14:37:25 UTC --- Author: jakub Date: Fri Aug 26 14:37:22 2011 New Revision: 178110 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178110 Log: PR c/50179 * c-typeck.c (c_process_expr_stmt): Skip over nops and call mark_exp_read even if exprv is ADDR_EXPR. * c-c++-common/Wunused-var-14.c: New test. Added: trunk/gcc/testsuite/c-c++-common/Wunused-var-14.c Modified: trunk/gcc/ChangeLog trunk/gcc/c-typeck.c trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/50179] [4.6/4.7 Regression] wrong "set but not used" warning 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org ` (2 preceding siblings ...) 2011-08-26 14:48 ` jakub at gcc dot gnu.org @ 2011-08-26 14:54 ` jakub at gcc dot gnu.org 2011-08-26 16:36 ` jakub at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-26 14:54 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-26 14:48:13 UTC --- Author: jakub Date: Fri Aug 26 14:48:10 2011 New Revision: 178112 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=178112 Log: PR c/50179 * c-typeck.c (c_process_expr_stmt): Skip over nops and call mark_exp_read even if exprv is ADDR_EXPR. * c-c++-common/Wunused-var-14.c: New test. Added: branches/gcc-4_6-branch/gcc/testsuite/c-c++-common/Wunused-var-14.c Modified: branches/gcc-4_6-branch/gcc/ChangeLog branches/gcc-4_6-branch/gcc/c-typeck.c branches/gcc-4_6-branch/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/50179] [4.6/4.7 Regression] wrong "set but not used" warning 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org ` (3 preceding siblings ...) 2011-08-26 14:54 ` jakub at gcc dot gnu.org @ 2011-08-26 16:36 ` jakub at gcc dot gnu.org 4 siblings, 0 replies; 6+ messages in thread From: jakub at gcc dot gnu.org @ 2011-08-26 16:36 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50179 Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |RESOLVED Resolution| |FIXED --- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-08-26 16:26:52 UTC --- Fixed. ^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2011-08-26 16:28 UTC | newest] Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-08-24 17:25 [Bug c/50179] New: wrong "set but not used" warning aldot at gcc dot gnu.org 2011-08-25 10:26 ` [Bug c/50179] " jakub at gcc dot gnu.org 2011-08-25 10:33 ` [Bug c/50179] [4.6/4.7 Regression] " jakub at gcc dot gnu.org 2011-08-26 14:48 ` jakub at gcc dot gnu.org 2011-08-26 14:54 ` jakub at gcc dot gnu.org 2011-08-26 16:36 ` jakub at gcc dot gnu.org
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