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

   1 /* { dg-do compile } */
   2 /* { dg-options "-Walloca-larger-than=5000 -O2" } */
   3
   4  char *
   5  _i18n_number_rewrite (char *w, char *rear_ptr)
   6 {
   7
   8   char *src;
   9  _Bool
  10       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 }