The following (IMHO valid) code snippet triggers an ICE on mainline when compiled with "-fopenmp":
========================================== template<int> void foo() { #pragma omp parallel for for (auto i=0; i<4; ++i) ; } ========================================== bug.cc: In function 'void foo()': bug.cc:4: internal compiler error: Segmentation fault Please submit a full bug report, [etc.] Without the template I get the following error message: bug.cc: In function 'void foo()': bug.cc:4: error: declaration of 'auto i' has no initializer bug.cc:4: error: invalid type for iteration variable 'i' which seems to be wrong because "i" has an initializer. Without "-fopenmp" both versions compile fine. -- Summary: [4.4 regression] ICE with auto and #pragma omp parallel Product: gcc Version: 4.4.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, monitored Severity: normal Priority: P3 Component: c++ AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: reichelt at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38257