gcc/testsuite/gcc.dg/tree-ssa/pr82665.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 void f1 (char *p, __SIZE_TYPE__ sz)
   5 {
   6   char *q = __builtin_memchr (p, 0, sz);
   7   __PTRDIFF_TYPE__ n = q - p;
   8
   9   if (n >= __PTRDIFF_MAX__)
  10     __builtin_abort ();
  11 }
  12
  13 void f2 (unsigned char *p, __SIZE_TYPE__ sz)
  14 {
  15   unsigned char *q = __builtin_memchr (p, 0, sz);
  16   __PTRDIFF_TYPE__ n = q - p;
  17
  18   if (n >= __PTRDIFF_MAX__)
  19     __builtin_abort ();
  20 }
  21
  22 void f3 (signed char *p, __SIZE_TYPE__ sz)
  23 {
  24   signed char *q = __builtin_memchr (p, 0, sz);
  25   __PTRDIFF_TYPE__ n = q - p;
  26
  27   if (n >= __PTRDIFF_MAX__)
  28     __builtin_abort ();
  29 }
  30
  31
  32 /* { dg-final { scan-tree-dump-not "memchr" "optimized" } } */