I came across some code that previously compiled at -O3 without complaint on gcc version 4.3.0 20080428 (Red Hat 4.3.0-8) and gcc version 4.4.1 (Ubuntu 4.4.1-4ubuntu9), but triggered a segmentation fault on gcc 4.4.3. After minimization, here is the segmentation fault:
$ /net/test-hsa014/wlam/local/gcc-4.4.3/bin/gcc -Wfatal-errors -c -O3 -Wall foo.cc foo.cc: In member function void TypeRegistry<ValueType>::registerType(int, const ValueType&) [with ValueType = int (*)()]: foo.cc:119: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. $ /net/test-hsa014/wlam/local/gcc-4.4.3/bin/g++ -v Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.4.3/configure --prefix=/net/test-hsa014/wlam/local/gcc-4.4.3 --disable-multilib Thread model: posix gcc version 4.4.3 (GCC) (built from the GNU source distribution, though -- Summary: [4.4 regression] internal compiler error in C++ template instantiations at -O3 Product: gcc Version: 4.4.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: wlam at kosmix dot com GCC build triplet: x86_64-redhat-linux GCC host triplet: x86_64-redhat-linux GCC target triplet: x86_64-redhat-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43416
