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* [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug
@ 2008-10-23 11:58 jakub at gcc dot gnu dot org
2008-10-23 12:41 ` [Bug middle-end/37902] " jakub at gcc dot gnu dot org
` (5 more replies)
0 siblings, 6 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-10-23 11:58 UTC (permalink / raw)
To: gcc-bugs
See http://gcc.gnu.org/ml/gcc-bugs/2008-10/msg01511.html
/* { dg-options "-O -W -Wall -Wdeclaration-after-statement -fpreprocessed" }
# 1 "my.c" 1
# 1 "my.h" 1 3 4
void foo (void);
# 2 "my.c" 2
void
foo (void)
{
}
int
bar (void)
{
return 0;
int j;
return j;
}
doesn't warn in bar, supposedly in_system_header hasn't been cleared when done
with foo function.
This is fixed on the trunk supposedly by
http://gcc.gnu.org/ml/gcc-patches/2008-07/msg01264.html
but that patch is definitely not backportable to 4.3 branch.
--
Summary: [4.3 Regression] in_system_header bug
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: jakub at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
@ 2008-10-23 12:41 ` jakub at gcc dot gnu dot org
2008-10-27 2:01 ` pinskia at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-10-23 12:41 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from jakub at gcc dot gnu dot org 2008-10-23 12:40 -------
The regression has been introduced by PR32256, before that in_system_header
flag wasn't saved/restored in push_cfun/pop_cfun.
The issue seems to be that allocate_struct_function call in store_parm_decls
doesn't seem to have a corresponding set_cfun (NULL); call, so when push_cfun
during gimplification is called, it doesn't save in_system_header (as cfun is
already non-NULL) and more importantly, pop_cfun at the end of gimplification
pops to the same cfun, which means in_system_header remains 1 when leaving the
gimplifier and is then used by subsequent parsing of bar function.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
2008-10-23 12:41 ` [Bug middle-end/37902] " jakub at gcc dot gnu dot org
@ 2008-10-27 2:01 ` pinskia at gcc dot gnu dot org
2008-11-03 11:29 ` jakub at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-10-27 2:01 UTC (permalink / raw)
To: gcc-bugs
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |pinskia at gcc dot gnu dot
| |org
Keywords| |diagnostic
Target Milestone|--- |4.3.3
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
2008-10-23 12:41 ` [Bug middle-end/37902] " jakub at gcc dot gnu dot org
2008-10-27 2:01 ` pinskia at gcc dot gnu dot org
@ 2008-11-03 11:29 ` jakub at gcc dot gnu dot org
2009-01-24 10:26 ` rguenth at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu dot org @ 2008-11-03 11:29 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
` (2 preceding siblings ...)
2008-11-03 11:29 ` jakub at gcc dot gnu dot org
@ 2009-01-24 10:26 ` rguenth at gcc dot gnu dot org
2009-08-04 12:43 ` rguenth at gcc dot gnu dot org
2010-05-22 18:26 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-01-24 10:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2009-01-24 10:20 -------
GCC 4.3.3 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.3 |4.3.4
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
` (3 preceding siblings ...)
2009-01-24 10:26 ` rguenth at gcc dot gnu dot org
@ 2009-08-04 12:43 ` rguenth at gcc dot gnu dot org
2010-05-22 18:26 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2009-08-04 12:43 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2009-08-04 12:29 -------
GCC 4.3.4 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.4 |4.3.5
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug middle-end/37902] [4.3 Regression] in_system_header bug
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
` (4 preceding siblings ...)
2009-08-04 12:43 ` rguenth at gcc dot gnu dot org
@ 2010-05-22 18:26 ` rguenth at gcc dot gnu dot org
5 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2010-05-22 18:26 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rguenth at gcc dot gnu dot org 2010-05-22 18:12 -------
GCC 4.3.5 is being released, adjusting target milestone.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|4.3.5 |4.3.6
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37902
^ permalink raw reply [flat|nested] 8+ messages in thread
[parent not found: <bug-37902-4@http.gcc.gnu.org/bugzilla/>]
end of thread, other threads:[~2011-06-27 12:01 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-10-23 11:58 [Bug middle-end/37902] New: [4.3 Regression] in_system_header bug jakub at gcc dot gnu dot org
2008-10-23 12:41 ` [Bug middle-end/37902] " jakub at gcc dot gnu dot org
2008-10-27 2:01 ` pinskia at gcc dot gnu dot org
2008-11-03 11:29 ` jakub at gcc dot gnu dot org
2009-01-24 10:26 ` rguenth at gcc dot gnu dot org
2009-08-04 12:43 ` rguenth at gcc dot gnu dot org
2010-05-22 18:26 ` rguenth at gcc dot gnu dot org
[not found] <bug-37902-4@http.gcc.gnu.org/bugzilla/>
2011-06-27 12:01 ` rguenth at gcc dot gnu.org
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