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* [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often
@ 2004-12-29 16:52 mueller at kde dot org
2004-12-29 18:00 ` [Bug c++/19190] " pinskia at gcc dot gnu dot org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: mueller at kde dot org @ 2004-12-29 16:52 UTC (permalink / raw)
To: gcc-bugs
after the fix for #11224 it now emits the warning almost everywhere.. e.g.
=== cut ===
struct breakme
{
void setAction( unsigned char a ) { act = a; }
unsigned int act:8;
};
=== cut ===
$ g++ -Wall -c test.cc
test.cc: In member function ‘void breakme::setAction(unsigned char)’:
test.cc:3: warning: value computed is not used
--
Summary: [4.0 regression] warning "value computed is not used"
emitted too often
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: c++
AssignedTo: mmitchel at gcc dot gnu dot org
ReportedBy: mueller at kde dot org
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: i686-pc-linux-gnu
GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/19190] [4.0 regression] warning "value computed is not used" emitted too often
2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
@ 2004-12-29 18:00 ` pinskia at gcc dot gnu dot org
2004-12-29 20:40 ` mark at codesourcery dot com
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-12-29 18:00 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-29 18:00 -------
Confirmed, I wonder if this is because there are casts added by the front-end:
(void) (unsigned int)
--
What |Removed |Added
----------------------------------------------------------------------------
Severity|critical |normal
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |diagnostic
Last reconfirmed|0000-00-00 00:00:00 |2004-12-29 18:00:54
date| |
Target Milestone|--- |4.0.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/19190] [4.0 regression] warning "value computed is not used" emitted too often
2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
2004-12-29 18:00 ` [Bug c++/19190] " pinskia at gcc dot gnu dot org
@ 2004-12-29 20:40 ` mark at codesourcery dot com
2004-12-30 0:31 ` cvs-commit at gcc dot gnu dot org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: mark at codesourcery dot com @ 2004-12-29 20:40 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mark at codesourcery dot com 2004-12-29 20:40 -------
Subject: Re: [4.0 regression] warning "value computed is not
used" emitted too often
pinskia at gcc dot gnu dot org wrote:
> ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-29 18:00 -------
> Confirmed, I wonder if this is because there are casts added by the front-end:
> (void) (unsigned int)
No, it's because STRIP_NOPS doesn't work as I thought it did. I'm
testing a fix.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/19190] [4.0 regression] warning "value computed is not used" emitted too often
2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
2004-12-29 18:00 ` [Bug c++/19190] " pinskia at gcc dot gnu dot org
2004-12-29 20:40 ` mark at codesourcery dot com
@ 2004-12-30 0:31 ` cvs-commit at gcc dot gnu dot org
2004-12-30 0:32 ` mmitchel at gcc dot gnu dot org
2004-12-30 3:51 ` mueller at kde dot org
4 siblings, 0 replies; 6+ messages in thread
From: cvs-commit at gcc dot gnu dot org @ 2004-12-30 0:31 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From cvs-commit at gcc dot gnu dot org 2004-12-30 00:31 -------
Subject: Bug 19190
CVSROOT: /cvs/gcc
Module name: gcc
Changes by: mmitchel@gcc.gnu.org 2004-12-30 00:31:01
Modified files:
gcc/cp : ChangeLog cvt.c
gcc/testsuite : ChangeLog
Added files:
gcc/testsuite/g++.dg/warn: Wunused-10.C
Log message:
PR c++/19190
* cvt.c (convert_to_void): Do not use STRIP_NOPs.
PR c++/19190
* g++.dg/warn/Wunused-10.C: New test.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4562&r2=1.4563
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/cvt.c.diff?cvsroot=gcc&r1=1.176&r2=1.177
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4826&r2=1.4827
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/warn/Wunused-10.C.diff?cvsroot=gcc&r1=NONE&r2=1.1
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/19190] [4.0 regression] warning "value computed is not used" emitted too often
2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
` (2 preceding siblings ...)
2004-12-30 0:31 ` cvs-commit at gcc dot gnu dot org
@ 2004-12-30 0:32 ` mmitchel at gcc dot gnu dot org
2004-12-30 3:51 ` mueller at kde dot org
4 siblings, 0 replies; 6+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2004-12-30 0:32 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mmitchel at gcc dot gnu dot org 2004-12-30 00:31 -------
Fixed in GCC 4.0.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Bug c++/19190] [4.0 regression] warning "value computed is not used" emitted too often
2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
` (3 preceding siblings ...)
2004-12-30 0:32 ` mmitchel at gcc dot gnu dot org
@ 2004-12-30 3:51 ` mueller at kde dot org
4 siblings, 0 replies; 6+ messages in thread
From: mueller at kde dot org @ 2004-12-30 3:51 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From mueller at kde dot org 2004-12-30 03:51 -------
Many thanks for your quick fix!
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19190
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2004-12-30 3:51 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2004-12-29 16:52 [Bug c++/19190] New: [4.0 regression] warning "value computed is not used" emitted too often mueller at kde dot org
2004-12-29 18:00 ` [Bug c++/19190] " pinskia at gcc dot gnu dot org
2004-12-29 20:40 ` mark at codesourcery dot com
2004-12-30 0:31 ` cvs-commit at gcc dot gnu dot org
2004-12-30 0:32 ` mmitchel at gcc dot gnu dot org
2004-12-30 3:51 ` mueller at kde dot org
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