gcc/testsuite/gcc.dg/Walloca-9.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca-larger-than=5000 -O2" } */
   4
   5 extern void useit(char *);
   6
   7 int
   8 foobar (unsigned short length)
   9 {
  10   char *pbuf;
  11   __SIZE_TYPE__ size = (__SIZE_TYPE__) length;
  12
  13   if (size < 4032)
  14     pbuf = (char *) __builtin_alloca(size);
  15   else
  16     pbuf = (char *) __builtin_malloc (size);
  17
  18   useit(pbuf);
  19   return 0;
  20 }