1/* Regression test: #ifdef 0 should not crash. Problem noted by 2 Jakub Jelinek <jakub@redhat.com>. */ 3/* { dg-do preprocess } */ 4 5#ifdef 0 /* { dg-error "macro names" } */ 6#endif 7 8#ifndef 0 /* { dg-error "macro names" } */ 9#endif 10