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
foo(int x)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
main(void)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 }
37