https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81154
Bug ID: 81154 Summary: OpenMP with shared variable in a template class crash Product: gcc Version: 7.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mplaneta at os dot inf.tu-dresden.de Target Milestone: --- Created attachment 41601 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41601&action=edit Minimal example Code compilation fails when following clauses are met: 1. In instantiation of a template class 2. There is a function overload 3. Inside one of the function overloads there is an OpenMP parallel for pragma 4. Pragma uses reduction or shared clause 5. A variable name is a function name (erroneously) 6. Compilation happens with -fopenmp (obviously) The code is incorrect, but instead of adequate error message the compiler crashes. Bug exists in many versions of GCC, not only 7.1.