(root)/
gcc-13.2.0/
gcc/
testsuite/
gcc.dg/
cpp/
if-5.c
       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