gcc/testsuite/gcc.c-torture/compile/pr52714.c

   1 /* { dg-require-effective-target alloca } */
   2
   3 int __re_compile_fastmap(unsigned char *p)
   4 {
   5     unsigned char **stack;
   6     unsigned size;
   7     unsigned avail;
   8
   9     stack = __builtin_alloca(5 * sizeof(unsigned char*));
  10     if (stack == 0)
  11         return -2;
  12     size = 5;
  13     avail = 0;
  14
  15     for (;;) {
  16         switch (*p++) {
  17         case 0:
  18             if (avail == size)
  19                 return -2;
  20             stack[avail++] = p;
  21         }
  22     }
  23
  24     return 0;
  25 }
  26