gcc/testsuite/gcc.dg/memcmp-pr95189.c

   1 /* PR middle-end/95189 - memcmp being wrongly stripped like strcmp
   2    { dg-do run }
   3    { dg-options "-O2 -Wall" } */
   4
   5 char a4[] = "\0abc";
   6 char a8[] = "\0abcdefg";
   7 char a16[] = "\0abcdefghijklmno";
   8
   9 int cmp4 (void)
  10 {
  11   return __builtin_memcmp (a4, "\0\0\0\0", 4);
  12 }
  13
  14 int cmp8 (void)
  15 {
  16   return __builtin_memcmp (a8, "\0\0\0\0\0\0\0\0", 8);
  17 }
  18
  19 int cmp16 (void)
  20 {
  21   return __builtin_memcmp (a16, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16);
  22 }
  23
  24 int main (void)
  25 {
  26   if (cmp4 () < 1 || cmp8 () < 1 || cmp16 () < 1)
  27     __builtin_abort ();
  28 }