gcc/testsuite/gcc.c-torture/execute/vla-dealloc-1.c

   1 /* VLAs should be deallocated on a jump to before their definition,
   2    including a jump to a label in an inner scope.  PR 19771.  */
   3 /* { dg-require-effective-target alloca } */
   4
   5 #if (__SIZEOF_INT__ <= 2)
   6 #define LIMIT 10000
   7 #else
   8 #define LIMIT 1000000
   9 #endif
  10
  11 void *volatile p;
  12
  13 int
  14 main (void)
  15 {
  16   int n = 0;
  17   if (0)
  18     {
  19     lab:;
  20     }
  21   int x[n % 1000 + 1];
  22   x[0] = 1;
  23   x[n % 1000] = 2;
  24   p = x;
  25   n++;
  26   if (n < LIMIT)
  27     goto lab;
  28   return 0;
  29 }