1  /* PR middle-end/78622 - [7 Regression] -Wformat-overflow/-fprintf-return-value
       2     incorrect with overflow/wrapping
       3     { dg-skip-if "Requires %hhd format" { hppa*-*-hpux* } }
       4     { dg-require-effective-target c99_runtime }
       5     { dg-additional-options "-Wformat-overflow=2" } */
       6  
       7  __attribute__((noinline, noclone)) int
       8  foo (int x)
       9  {
      10    if (x < 4096 + 8 || x >= 4096 + 256 + 8)
      11      return -1;
      12  
      13    char buf[5];
      14    int n = __builtin_snprintf (buf, sizeof buf, "%hhd", x + 1);
      15    __builtin_printf ("\"%hhd\" => %i\n", x + 1, n);
      16    return n;
      17  }
      18  
      19  int
      20  main (void)
      21  {
      22    if (__SCHAR_MAX__ != 127 || __CHAR_BIT__ != 8 || __SIZEOF_INT__ != 4)
      23      return 0;
      24  
      25    if (foo (4095 + 9) != 1
      26        || foo (4095 + 32) != 2
      27        || foo (4095 + 127) != 3
      28        || foo (4095 + 128) != 4
      29        || foo (4095 + 240) != 3
      30        || foo (4095 + 248) != 2
      31        || foo (4095 + 255) != 2
      32        || foo (4095 + 256) != 1)
      33      __builtin_abort ();
      34  
      35    return 0;
      36  }