gcc/testsuite/gcc.dg/Walloca-13.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca-larger-than=100 -O2" } */
   4
   5 void f (void*);
   6
   7 void g (int *p, int *q)
   8 {
   9   __SIZE_TYPE__ n = (__SIZE_TYPE__)(p - q);
  10   if (n < 100)
  11     f (__builtin_alloca (n));
  12 }