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* [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning
@ 2006-07-06 9:14 tbm at cyrius dot com
2006-07-06 14:51 ` [Bug c/28280] " pinskia at gcc dot gnu dot org
` (13 more replies)
0 siblings, 14 replies; 15+ messages in thread
From: tbm at cyrius dot com @ 2006-07-06 9:14 UTC (permalink / raw)
To: gcc-bugs
gcc 4.2 shows the following bogus warning message. I'm not sure whether this
is a regression or a new warning but it would be great if this could be
improved. The warning shows up in elfutils, the minimal testcase was extracted
by Eugeniy Meshcheryakov.
41714:tbm@deprecation: ~] /usr/lib/gcc-snapshot/bin/gcc -c -W -Wall test.c
test.c: In function 'fun':
test.c:9: warning: statement with no effect
41715:tbm@deprecation: ~] gcc-4.1 -c -W -Wall test.c
41716:tbm@deprecation: ~] cat test.c
#include <inttypes.h>
void * fun(char *desc, int descsz)
{
struct
{
uint32_t os;
uint32_t version[descsz / 4 - 1];
} *tag = (__typeof (tag)) desc;
return tag;
}
--
Summary: [4.2 regression] bogus "statement with no effect"
warning
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: tbm at cyrius dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
@ 2006-07-06 14:51 ` pinskia at gcc dot gnu dot org
2006-07-06 15:12 ` [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof pinskia at gcc dot gnu dot org
` (12 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-06 14:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from pinskia at gcc dot gnu dot org 2006-07-06 14:51 -------
This is not a debug issue.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|fche at redhat dot com, |
|jakub at redhat dot com |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
2006-07-06 14:51 ` [Bug c/28280] " pinskia at gcc dot gnu dot org
@ 2006-07-06 15:12 ` pinskia at gcc dot gnu dot org
2006-07-06 15:13 ` pinskia at gcc dot gnu dot org
` (11 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-06 15:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from pinskia at gcc dot gnu dot org 2006-07-06 15:12 -------
We are warning inside the typeof.
Here is a shorter testcase:
void f(__SIZE_TYPE__ d)
{
typedef int t[d];
t *g = (__typeof(g))d;
}
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |diagnostic
Summary|[4.2 regression] bogus |[4.2 regression] bogus
|"statement with no effect" |"statement with no effect"
|warning |warning with VLA and typeof
Target Milestone|--- |4.2.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
2006-07-06 14:51 ` [Bug c/28280] " pinskia at gcc dot gnu dot org
2006-07-06 15:12 ` [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof pinskia at gcc dot gnu dot org
@ 2006-07-06 15:13 ` pinskia at gcc dot gnu dot org
2006-07-08 10:10 ` mrs at apple dot com
` (10 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-06 15:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from pinskia at gcc dot gnu dot org 2006-07-06 15:13 -------
Most likely caused by:
2006-05-18 Mike Stump <mrs@apple.com>
Fix up vla, vm and [*] sematics.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mrs at apple dot com
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2006-07-06 15:13:05
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (2 preceding siblings ...)
2006-07-06 15:13 ` pinskia at gcc dot gnu dot org
@ 2006-07-08 10:10 ` mrs at apple dot com
2006-07-12 13:12 ` mrs at gcc dot gnu dot org
` (9 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mrs at apple dot com @ 2006-07-08 10:10 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from mrs at apple dot com 2006-07-08 10:10 -------
Fix submitted.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (3 preceding siblings ...)
2006-07-08 10:10 ` mrs at apple dot com
@ 2006-07-12 13:12 ` mrs at gcc dot gnu dot org
2006-07-12 13:13 ` mrs at apple dot com
` (8 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mrs at gcc dot gnu dot org @ 2006-07-12 13:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from mrs at gcc dot gnu dot org 2006-07-12 13:12 -------
Subject: Bug 28280
Author: mrs
Date: Wed Jul 12 13:12:08 2006
New Revision: 115369
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=115369
Log:
PR c/28280
* c-parser.c (c_parser_typeof_specifier): Don't use
c_finish_expr_stmt, open code desired semantics instead.
Added:
trunk/gcc/testsuite/gcc.dg/vla-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-parser.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (4 preceding siblings ...)
2006-07-12 13:12 ` mrs at gcc dot gnu dot org
@ 2006-07-12 13:13 ` mrs at apple dot com
2006-07-12 17:23 ` pinskia at gcc dot gnu dot org
` (7 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mrs at apple dot com @ 2006-07-12 13:13 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from mrs at apple dot com 2006-07-12 13:13 -------
I have checked in a fix for this.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (5 preceding siblings ...)
2006-07-12 13:13 ` mrs at apple dot com
@ 2006-07-12 17:23 ` pinskia at gcc dot gnu dot org
2006-07-15 17:04 ` mrs at gcc dot gnu dot org
` (6 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-12 17:23 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from pinskia at gcc dot gnu dot org 2006-07-12 17:23 -------
Fixed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (6 preceding siblings ...)
2006-07-12 17:23 ` pinskia at gcc dot gnu dot org
@ 2006-07-15 17:04 ` mrs at gcc dot gnu dot org
2006-07-15 18:52 ` mrs at apple dot com
` (5 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mrs at gcc dot gnu dot org @ 2006-07-15 17:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from mrs at gcc dot gnu dot org 2006-07-15 17:03 -------
Subject: Bug 28280
Author: mrs
Date: Sat Jul 15 17:03:44 2006
New Revision: 115479
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=115479
Log:
Revert:
PR c/28280
* c-parser.c (c_parser_typeof_specifier): Don't use
c_finish_expr_stmt, open code desired semantics instead.
Removed:
trunk/gcc/testsuite/gcc.dg/vla-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-parser.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (7 preceding siblings ...)
2006-07-15 17:04 ` mrs at gcc dot gnu dot org
@ 2006-07-15 18:52 ` mrs at apple dot com
2006-07-15 18:58 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mrs at apple dot com @ 2006-07-15 18:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from mrs at apple dot com 2006-07-15 18:52 -------
THis bug should be reopened.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (8 preceding siblings ...)
2006-07-15 18:52 ` mrs at apple dot com
@ 2006-07-15 18:58 ` pinskia at gcc dot gnu dot org
2006-07-17 3:08 ` mmitchel at gcc dot gnu dot org
` (3 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-07-15 18:58 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from pinskia at gcc dot gnu dot org 2006-07-15 18:58 -------
Reopening because Mike cannot do it himself as he does not know the trick of
using his @gcc.gnu.org.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
Resolution|FIXED |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (9 preceding siblings ...)
2006-07-15 18:58 ` pinskia at gcc dot gnu dot org
@ 2006-07-17 3:08 ` mmitchel at gcc dot gnu dot org
2006-08-15 16:17 ` jsm28 at gcc dot gnu dot org
` (2 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2006-07-17 3:08 UTC (permalink / raw)
To: gcc-bugs
--
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (10 preceding siblings ...)
2006-07-17 3:08 ` mmitchel at gcc dot gnu dot org
@ 2006-08-15 16:17 ` jsm28 at gcc dot gnu dot org
2006-08-15 18:01 ` mrs at gcc dot gnu dot org
2006-08-15 18:04 ` pinskia at gcc dot gnu dot org
13 siblings, 0 replies; 15+ messages in thread
From: jsm28 at gcc dot gnu dot org @ 2006-08-15 16:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #11 from jsm28 at gcc dot gnu dot org 2006-08-15 16:16 -------
The patch http://gcc.gnu.org/ml/gcc-patches/2006-07/txt00017.txt is OK.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (11 preceding siblings ...)
2006-08-15 16:17 ` jsm28 at gcc dot gnu dot org
@ 2006-08-15 18:01 ` mrs at gcc dot gnu dot org
2006-08-15 18:04 ` pinskia at gcc dot gnu dot org
13 siblings, 0 replies; 15+ messages in thread
From: mrs at gcc dot gnu dot org @ 2006-08-15 18:01 UTC (permalink / raw)
To: gcc-bugs
------- Comment #12 from mrs at gcc dot gnu dot org 2006-08-15 18:01 -------
Subject: Bug 28280
Author: mrs
Date: Tue Aug 15 18:01:19 2006
New Revision: 116163
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116163
Log:
PR c/28280
* c-parser.c (c_parser_typeof_specifier): Don't use
c_finish_expr_stmt, open code desired semantics instead.
Added:
trunk/gcc/testsuite/gcc.dg/vla-9.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/c-parser.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof
2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
` (12 preceding siblings ...)
2006-08-15 18:01 ` mrs at gcc dot gnu dot org
@ 2006-08-15 18:04 ` pinskia at gcc dot gnu dot org
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2006-08-15 18:04 UTC (permalink / raw)
To: gcc-bugs
------- Comment #13 from pinskia at gcc dot gnu dot org 2006-08-15 18:04 -------
Fixed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28280
^ permalink raw reply [flat|nested] 15+ messages in thread
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2006-07-06 9:14 [Bug debug/28280] New: [4.2 regression] bogus "statement with no effect" warning tbm at cyrius dot com
2006-07-06 14:51 ` [Bug c/28280] " pinskia at gcc dot gnu dot org
2006-07-06 15:12 ` [Bug c/28280] [4.2 regression] bogus "statement with no effect" warning with VLA and typeof pinskia at gcc dot gnu dot org
2006-07-06 15:13 ` pinskia at gcc dot gnu dot org
2006-07-08 10:10 ` mrs at apple dot com
2006-07-12 13:12 ` mrs at gcc dot gnu dot org
2006-07-12 13:13 ` mrs at apple dot com
2006-07-12 17:23 ` pinskia at gcc dot gnu dot org
2006-07-15 17:04 ` mrs at gcc dot gnu dot org
2006-07-15 18:52 ` mrs at apple dot com
2006-07-15 18:58 ` pinskia at gcc dot gnu dot org
2006-07-17 3:08 ` mmitchel at gcc dot gnu dot org
2006-08-15 16:17 ` jsm28 at gcc dot gnu dot org
2006-08-15 18:01 ` mrs at gcc dot gnu dot org
2006-08-15 18:04 ` pinskia at gcc dot gnu dot org
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