gcc/testsuite/gcc.dg/pr33238.c

   1 /* PR c/33238 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-std=gnu89" } */
   4 /* { dg-require-effective-target alloca } */
   5
   6 void
   7 reverse (void *x, int y, int z)
   8 {
   9   struct { char w[z]; } *p = x, a;
  10   int i, j;
  11   for (i = y - 1, j = 0; j < y / 2; i--, j++)
  12     ({ a = p[i]; p[i] = p[j]; p[j] = a; });
  13 }