gcc/testsuite/gcc.dg/builtin-object-size-18.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3 /* __stpncpy_chk could return buf up to buf + 64, so
   4    the minimum object size might be far smaller than 64.  */
   5 /* { dg-final { scan-tree-dump-not "return 64;" "optimized" } } */
   6
   7 typedef __SIZE_TYPE__ size_t;
   8
   9 size_t
  10 foo (const char *p, size_t s, size_t t)
  11 {
  12   char buf[64];
  13   char *q = __builtin___stpncpy_chk (buf, p, s, t);
  14   return __builtin_object_size (q, 2);
  15 }