[Bug c++/81154] New: OpenMP with shared variable in a template class crash

["mplaneta at os dot inf.tu-dresden.de" <gcc-bugzilla at gcc dot gnu dot org>]

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.