gcc/testsuite/gcc.dg/Walloca-4.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target alloca } */
   3 /* { dg-options "-Walloca-larger-than=5000 -O2" } */
   4
   5  char *
   6  _i18n_number_rewrite (char *w, char *rear_ptr)
   7 {
   8
   9   char *src;
  10   _Bool use_alloca = (((rear_ptr - w) * sizeof (char)) < 4096U);
  11   if (use_alloca)
  12     src = (char *) __builtin_alloca ((rear_ptr - w) * sizeof (char));
  13   else
  14     src = (char *) __builtin_malloc ((rear_ptr - w) * sizeof (char));
  15   return src;
  16 }
  17
  18 /* { dg-prune-output "-Wreturn-local-addr" } */