[Bug c/101297] New: Spurious comma accepted at the end of #pragma omp atomic

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101297

            Bug ID: 101297
           Summary: Spurious comma accepted at the end of #pragma omp
                    atomic
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

int i;

void
foo (void)
{
  #pragma omp atomic update,    /* { dg-error "expected end of line before ','
token" } */
  i++;
  #pragma omp atomic update,,   /* { dg-error "expected end of line before ','
token" } */
  i++;
}

diagnoses with -fopenmp only the second error and not the first one (seems both
clang and ICC suffer from the same bug though).