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[Bug c++/35247] New: Usage of openmp pragmas causes internal compiler error
- From: "ttsiod at softlab dot ntua dot gr" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 18 Feb 2008 08:52:16 -0000
- Subject: [Bug c++/35247] New: Usage of openmp pragmas causes internal compiler error
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
I tried compiling my open source application with GCC. My application uses
OpenMP to make use of available CPU cores and run faster. I got an internal
compiler error from GCC, even though the same code compiles and runs fine
(using both cores) under Intel's ICC. It also compiles and runs fine with GCC
when I don't use the -fopenmp option (but then it only uses one core).
My GCC -v output:
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ./configure --enable-languages=c,c++ --prefix=/opt/gcc-4.2.3
--exec_prefix=/opt/gcc-4.2.3
Thread model: posix
Version gcc 4.2.3
My system: (uname -a)
Linux home 2.6.23 #2 SMP PREEMPT Sun Nov 11 11:44:34 EET 2007 i686 Intel(R)
Core(TM)2 Duo CPU E4500 @ 2.20GHz GenuineIntel GNU/Linux
The command line that triggers the bug is simple:
g++ -c -fopenmp Scene.ii
It reports:
src/Scene.cc: In member function 'void Scene::renderPhong(const Camera&,
Screen&)':
src/Scene.cc:165: åóùôåñéêü óöÜëìá ìåôáãëùôôéóôÞ: in create_tmp_var, at
gimplify.c:487
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
Scene.ii (the preprocessed output), is available here:
http://users.softlab.ntua.gr/~ttsiod/Scene.ii.bz2
If you remove the -fopenmp, the code compiles fine.
In case you want to see what the code is used for, the open source project and
its full code is available here:
http://users.softlab.ntua.gr/~ttsiod/renderer.html
--
Summary: Usage of openmp pragmas causes internal compiler error
Product: gcc
Version: 4.2.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ttsiod at softlab dot ntua dot gr
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=35247