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* [Bug c++/32177] New: g++ crashes on some valid OpenMP code
@ 2007-06-01 10:21 theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 10:22 ` [Bug c++/32177] " theodore dot papadopoulo at sophia dot inria dot fr
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: theodore dot papadopoulo at sophia dot inria dot fr @ 2007-06-01 10:21 UTC (permalink / raw)
To: gcc-bugs
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This is with gcc version 4.3.0 20070528 (experimental) and gcc-4.1.1 (redhat
FC5 version). I suspect it is also true for all intermediate versions...
The attached program when compiled with g++ and the flags -fopenmp gives the
following diagnostic and aborts compilation:
futuna-> /usr/local/gcc-4.3/bin/g++ -fopenmp BugOMP1.C
BugOMP1.C: In function void f():
BugOMP1.C:14: internal compiler error: in lower_stmt, at gimple-low.c:282
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
There is an obvious workaround in this case: remove the A().s() call from the
loop. This is related to the destructor in class A (suppress it and the problem
disappears). The problem is that lower_stmt is presented with a
WITH_CLEANUP_EXPR node which it is not prepared to handle. I suspect that with
-fopenmp g++ does not create a valid gimple code in this case...
I tried the dubious "make lower_stmt do nothing with this code" and, of course,
something else fails afterwards.
--
Summary: g++ crashes on some valid OpenMP code
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: theodore dot papadopoulo at sophia dot inria dot fr
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=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
@ 2007-06-01 10:22 ` theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: theodore dot papadopoulo at sophia dot inria dot fr @ 2007-06-01 10:22 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from theodore dot papadopoulo at sophia dot inria dot fr 2007-06-01 10:22 -------
Created an attachment (id=13644)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13644&action=view)
The source code showing the potential bug....
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 10:22 ` [Bug c++/32177] " theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
@ 2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
2007-06-06 18:03 ` jakub at gcc dot gnu dot org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2007-06-01 11:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from rguenth at gcc dot gnu dot org 2007-06-01 11:28 -------
We have a
<with_cleanup_expr 0x2aadb4071380
type <void_type 0x2aadb3ecf240 void VOID
align 8 symtab 0 alias set -1 canonical type 0x2aadb3ecf240
pointer_to_this <pointer_type 0x2aadb3ecf300>>
side-effects
arg 0 <call_expr 0x2aadb3eb0a50 type <void_type 0x2aadb3ecf240 void>
side-effects nothrow
fn <addr_expr 0x2aadb4071140 type <pointer_type 0x2aadb406a900>
constant invariant arg 0 <function_decl 0x2aadb4069000 __comp_dtor
>>
arg 0 <addr_expr 0x2aadb4071100 type <pointer_type 0x2aadb4061780>
invariant arg 0 <var_decl 0x2aadb406f160 D.2557>>
t.ii:8>>
that we don't handle in lower_stmt (). The complete fn looks like
{
try
{
__comp_ctor (&D.2557);
<<< Unknown tree: with_cleanup_expr
__comp_dtor (&D.2557) >>>
;
D.2559 = s (&D.2557);
D.2565 = D.2559;
#pragma omp for nowait
for (i = 1; i <= D.2565; i = i + 1)
OMP_CONTINUE
}
catch
{
<<<eh_filter ()>>>
{
terminate ();
}
}
OMP_RETURN [nowait]
}
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 10:22 ` [Bug c++/32177] " theodore dot papadopoulo at sophia dot inria dot fr
@ 2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2007-06-01 11:28 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rguenth at gcc dot gnu dot org 2007-06-01 11:28 -------
Confirmed.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-06-01 11:28:27
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
` (2 preceding siblings ...)
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
@ 2007-06-06 18:03 ` jakub at gcc dot gnu dot org
2007-06-07 23:11 ` jakub at gcc dot gnu dot org
2007-06-11 22:00 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-06-06 18:03 UTC (permalink / raw)
To: gcc-bugs
--
jakub at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |jakub at gcc dot gnu dot org
|dot org |
URL| |http://gcc.gnu.org/ml/gcc-
| |patches/2007-
| |06/msg00367.html
Status|NEW |ASSIGNED
Last reconfirmed|2007-06-01 11:28:27 |2007-06-06 18:02:44
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
` (3 preceding siblings ...)
2007-06-06 18:03 ` jakub at gcc dot gnu dot org
@ 2007-06-07 23:11 ` jakub at gcc dot gnu dot org
2007-06-11 22:00 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu dot org @ 2007-06-07 23:11 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from jakub at gcc dot gnu dot org 2007-06-07 23:11 -------
Subject: Bug 32177
Author: jakub
Date: Thu Jun 7 23:11:23 2007
New Revision: 125544
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125544
Log:
PR c++/32177
* semantics.c (finish_omp_for): Call fold_build_cleanup_point_expr
on init, the non-decl cond operand and increment value.
* g++.dg/gomp/pr32177.C: New test.
Added:
trunk/gcc/testsuite/g++.dg/gomp/pr32177.C
Modified:
trunk/gcc/cp/ChangeLog
trunk/gcc/cp/semantics.c
trunk/gcc/testsuite/ChangeLog
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug c++/32177] g++ crashes on some valid OpenMP code
2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
` (4 preceding siblings ...)
2007-06-07 23:11 ` jakub at gcc dot gnu dot org
@ 2007-06-11 22:00 ` pinskia at gcc dot gnu dot org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2007-06-11 22:00 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from pinskia at gcc dot gnu dot org 2007-06-11 21:59 -------
Fixed.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
Target Milestone|--- |4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32177
^ permalink raw reply [flat|nested] 7+ messages in thread
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2007-06-01 10:21 [Bug c++/32177] New: g++ crashes on some valid OpenMP code theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 10:22 ` [Bug c++/32177] " theodore dot papadopoulo at sophia dot inria dot fr
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
2007-06-01 11:28 ` rguenth at gcc dot gnu dot org
2007-06-06 18:03 ` jakub at gcc dot gnu dot org
2007-06-07 23:11 ` jakub at gcc dot gnu dot org
2007-06-11 22:00 ` pinskia at gcc dot gnu dot org
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