gcc/testsuite/gcc.dg/Walloca-6.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca-larger-than=256 -O2" } */
   4
   5 void f (void*);
   6 void g (__SIZE_TYPE__ n)
   7 {
   8   // No warning on this case.  Range is easily determinable.
   9   if (n > 0 && n < 256)
  10     f (__builtin_alloca (n));
  11 }