aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.9/gcc/testsuite/gcc.dg/switch-warn-1.c
blob: 04ca4e36765493dc3cf88699f18009e491669fc6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/* { dg-do run } */
/* { dg-options "-O0" } */

extern void abort (void);
extern void exit (int);

/* Check that out-of-bounds case warnings work in the case that the
   testing expression is promoted.  */
int
foo1 (unsigned char i)
{
  switch (i)
    {
    case -1:   /* { dg-warning "case label value is less than minimum value for type" } */
      return 1;
    case 256:  /* { dg-warning "case label value exceeds maximum value for type" } */
      return 2;
    default:
      return 3;
    }
}

/* Like above, but for case ranges that need to be satured.  */
int
foo2 (unsigned char i)
{
  switch (i)
    {
    case -1 ... 1:   /* { dg-warning "lower value in case label range less than minimum value for type" } */
      return 1;
    case 254 ... 256:  /* { dg-warning "upper value in case label range exceeds maximum value for type" } */
      return 2;
    default:
      return 3;
    }
}

int
main (void)
{
  if (foo1 (10) != 3)
    abort ();
  if (foo2 (10) != 3)
    abort ();
  exit (0);
}