[Bug middle-end/67517] New: ICE in gimplify_scan_omp_clauses

["jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67517

            Bug ID: 67517
           Summary: ICE in gimplify_scan_omp_clauses
           Product: gcc
           Version: 5.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

void
foo (int x)
{
  int i;
  #pragma omp parallel for simd linear (x: x)
  for (i = 0; i < 10; ++i)
    ;
}

void
bar (int x, int y, int z)
{
  int i;
  #pragma omp parallel for simd linear (y : x) linear (x : 1) linear (z : x)
  for (i = 0; i < 10; ++i)
    ;
}

ICEs, because the linear step expressions already contain the variable and make
it implicitly determined (shared in this case), while linear wants it to be
lastprivate on the for or parallel.