gcc/testsuite/gcc.dg/pr98721-1.c

   1 /* PR tree-optimization/98721 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2" } */
   4
   5 int
   6 foo (int n)
   7 {
   8   if (n <= 0)
   9     {
  10       char vla[n];                      /* { dg-message "source object 'vla' of size 0" } */
  11       return __builtin_strlen (vla);    /* { dg-warning "'__builtin_strlen' reading 1 or more bytes from a region of size 0" } */
  12     }
  13   return -1;
  14 }