gcc/testsuite/gcc.c-torture/execute/pr22061-1.c

   1 /* { dg-require-effective-target alloca } */
   2 int N = 1;
   3 void foo() {} /* Necessary to trigger the original ICE.  */
   4 void bar (char a[2][N]) { a[1][0] = N; }
   5 int
   6 main (void)
   7 {
   8   void *x;
   9
  10   N = 4;
  11   x = alloca (2 * N);
  12   memset (x, 0, 2 * N);
  13   bar (x);
  14   if (N[(char *) x] != N)
  15     abort ();
  16   exit (0);
  17 }