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* [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__))
@ 2008-01-26 20:07 sam at ravnborg dot org
2008-01-26 20:48 ` [Bug c/34985] " rguenth at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: sam at ravnborg dot org @ 2008-01-26 20:07 UTC (permalink / raw)
To: gcc-bugs
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Exact gcc version (Fedora 8): gcc (GCC) 4.1.2 20070925 (Red Hat 4.1.2-33)
Following small code snippet:
static void remove_one(void);
static void __attribute__((__used__)) remove_one(void)
{
}
build with:
gcc -c -Wall test.c
produces following warning:
test.c:4: warning: remove_one defined but not used
Removing the forward declaration (prototye) or
adding the attribute to the forward declaration make
the warning disappear.
I had expected the attribution on the function to take
precedence over the forward declaration.
Browsing the gcc manual did not reveal an answer and searching
the web / the bug database did not bring up an answer
so I decided to report it as a bug.
/Sam
--
Summary: Warning "defined but not used" despite
__attribute__((__used__))
Product: gcc
Version: 4.1.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: sam at ravnborg dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/34985] Warning "defined but not used" despite __attribute__((__used__))
2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
@ 2008-01-26 20:48 ` rguenth at gcc dot gnu dot org
2008-02-02 12:53 ` manu at gcc dot gnu dot org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-01-26 20:48 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-01-26 20:09 -------
Confirmed. Not a regression.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|normal |enhancement
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Keywords| |diagnostic
Known to fail| |4.3.0
Last reconfirmed|0000-00-00 00:00:00 |2008-01-26 20:09:33
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/34985] Warning "defined but not used" despite __attribute__((__used__))
2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
2008-01-26 20:48 ` [Bug c/34985] " rguenth at gcc dot gnu dot org
@ 2008-02-02 12:53 ` manu at gcc dot gnu dot org
2008-07-29 10:02 ` manu at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-02-02 12:53 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from manu at gcc dot gnu dot org 2008-02-02 12:52 -------
Patch here: http://gcc.gnu.org/ml/gcc-patches/2008-02/msg00044.html
I miss the patch tracker :(
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |manu at gcc dot gnu dot org
OtherBugsDependingO| |33702
nThis| |
AssignedTo|unassigned at gcc dot gnu |manu at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Keywords| |patch
Last reconfirmed|2008-01-26 20:09:33 |2008-02-02 12:52:41
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/34985] Warning "defined but not used" despite __attribute__((__used__))
2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
2008-01-26 20:48 ` [Bug c/34985] " rguenth at gcc dot gnu dot org
2008-02-02 12:53 ` manu at gcc dot gnu dot org
@ 2008-07-29 10:02 ` manu at gcc dot gnu dot org
2008-07-29 10:09 ` manu at gcc dot gnu dot org
2008-12-29 14:50 ` pinskia at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-07-29 10:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from manu at gcc dot gnu dot org 2008-07-29 10:01 -------
Subject: Bug 34985
Author: manu
Date: Tue Jul 29 10:00:25 2008
New Revision: 138235
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=138235
Log:
2008-07-29 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR 34985
* c-decl.c (merge_decls): Merge USED flags.
cp/
* decl.c (duplicate_decls): Merge USED flags.
testsuite/
* gcc.dg/pr34985.c: New.
* g++.dg/warn/pr34985.C: New.
Added:
trunk/gcc/testsuite/g++.dg/warn/pr34985.C
trunk/gcc/testsuite/gcc.dg/pr34985.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-decl.c
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/decl.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/34985] Warning "defined but not used" despite __attribute__((__used__))
2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
` (2 preceding siblings ...)
2008-07-29 10:02 ` manu at gcc dot gnu dot org
@ 2008-07-29 10:09 ` manu at gcc dot gnu dot org
2008-12-29 14:50 ` pinskia at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: manu at gcc dot gnu dot org @ 2008-07-29 10:09 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from manu at gcc dot gnu dot org 2008-07-29 10:08 -------
Fixed in GCC 4.4
--
manu at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c/34985] Warning "defined but not used" despite __attribute__((__used__))
2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
` (3 preceding siblings ...)
2008-07-29 10:09 ` manu at gcc dot gnu dot org
@ 2008-12-29 14:50 ` pinskia at gcc dot gnu dot org
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-12-29 14:50 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34985
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-12-29 14:50 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2008-01-26 20:07 [Bug c/34985] New: Warning "defined but not used" despite __attribute__((__used__)) sam at ravnborg dot org
2008-01-26 20:48 ` [Bug c/34985] " rguenth at gcc dot gnu dot org
2008-02-02 12:53 ` manu at gcc dot gnu dot org
2008-07-29 10:02 ` manu at gcc dot gnu dot org
2008-07-29 10:09 ` manu at gcc dot gnu dot org
2008-12-29 14:50 ` pinskia at gcc dot gnu dot org
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