gcc/testsuite/gcc.dg/pr79972.c

   1 /* PR tree-optimization/79972 */
   2 /* { dg-do compile } */
   3 /* { dg-require-effective-target alloca } */
   4 /* { dg-options "-Walloca -Wvla-larger-than=10000" } */
   5
   6 int
   7 f (int dim, int *b, int *c)
   8 {
   9   /* -Wvla-larger-than is only issued with optimization (see PR 100510).  */
  10   int newcentroid[3][dim];
  11   int *a = newcentroid[2];
  12   int i, dist = 0;
  13   __builtin_memcpy (newcentroid, c, sizeof (newcentroid));
  14   for (i = 0; i < dim; i++)
  15     dist += (a[i] - b[i]) * (a[i] - b[i]);
  16   return dist;
  17 }