gcc/testsuite/gcc.dg/Walloca-8.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca-larger-than=2000 -O2" } */
   4
   5 void *p;
   6 void
   7 foo (__SIZE_TYPE__ len)
   8 {
   9   if (len < 2000 / sizeof (void *))
  10     p = __builtin_alloca (len * sizeof (void *));
  11   else
  12     p = __builtin_malloc (len * sizeof (void *));
  13 }