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[Bug c++/32177] New: g++ crashes on some valid OpenMP code
- From: "theodore dot papadopoulo at sophia dot inria dot fr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 1 Jun 2007 10:21:37 -0000
- Subject: [Bug c++/32177] New: g++ crashes on some valid OpenMP code
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
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