* c-parser.c (c_parser_omp_clause_schedule): Warn if
OMP_CLAUSE_SCHEDULE_CHUNK_EXPR is known not to be positive.
* semantics.c (finish_omp_clauses) <case OMP_CLAUSE_SCHEDULE>: Warn
if OMP_CLAUSE_SCHEDULE_CHUNK_EXPR is known not to be positive.
* openmp.c (resolve_omp_clauses): Warn if chunk_size is known not to
be positive.
* c-c++-common/gomp/schedule-1.c: New test.
* gfortran.dg/gomp/schedule-1.f90: New test.
* testsuite/libgomp.c/doacross-1.c (main): Use schedule(static)
instead of invalid schedule(static, 0).
* testsuite/libgomp.c/doacross-2.c (main): Likewise.
From-SVN: r236793