1/* Conversions between function and object pointers are not permitted
2   in any version of ISO C, even with casts, except for the special
3   case of converting a null pointer constant to function pointer
4   type.  Likewise, comparisons between function and object pointers
5   are not permitted.  PR c/11234.  */
6/* Origin: Joseph Myers <jsm@polyomino.org.uk> */
7/* { dg-do compile } */
8/* { dg-options "-pedantic" } */
9
10void f(void);
11
12void *v1 = f; /* { dg-warning "12:pointer" "bad conversion" } */
13void *v2 = &f; /* { dg-warning "12:pointer" "bad conversion" } */
14void *v3 = (void *)f; /* { dg-warning "12:pointer" "bad conversion" } */
15void *v4 = (void *)&f; /* { dg-warning "12:pointer" "bad conversion" } */
16void *v5;
17char *c1 = f; /* { dg-warning "12:pointer" "bad conversion" } */
18char *c2 = &f; /* { dg-warning "12:pointer" "bad conversion" } */
19char *c3 = (char *)f; /* { dg-warning "12:pointer" "bad conversion" } */
20char *c4 = (char *)&f; /* { dg-warning "12:pointer" "bad conversion" } */
21char *c5;
22void (*fp)(void);
23int a;
24
25void
26g(void)
27{
28  v5 = f; /* { dg-warning "6:pointer" "bad conversion" } */
29  v5 = &f; /* { dg-warning "6:pointer" "bad conversion" } */
30  v5 = (void *)f; /* { dg-warning "8:pointer" "bad conversion" } */
31  v5 = (void *)&f; /* { dg-warning "8:pointer" "bad conversion" } */
32  c5 = f; /* { dg-warning "6:pointer" "bad conversion" } */
33  c5 = &f; /* { dg-warning "6:pointer" "bad conversion" } */
34  c5 = (char *)f; /* { dg-warning "8:pointer" "bad conversion" } */
35  c5 = (char *)&f; /* { dg-warning "8:pointer" "bad conversion" } */
36  fp = v5; /* { dg-warning "6:pointer" "bad conversion" } */
37  fp = c5; /* { dg-warning "6:pointer" "bad conversion" } */
38  fp = (void (*)(void))v5; /* { dg-warning "8:pointer" "bad conversion" } */
39  fp = (void (*)(void))c5; /* { dg-warning "8:pointer" "bad conversion" } */
40  (a ? f : v3); /* { dg-warning "10:pointer" "bad conversion" } */
41  (a ? v2 : fp); /* { dg-warning "11:pointer" "bad conversion" } */
42  /* The following are OK.  */
43  fp = 0;
44  fp = (void *)0;
45  fp = 0L;
46  fp = (void (*)(void))0;
47  fp = (void (*)(void))(void *)0;
48  (a ? f : 0);
49  (a ? f : (void *)0);
50  (a ? (void *)0 : fp);
51  (a ? 0 : fp);
52}
53
54/* The following are OK.  */
55void (*fp2)(void) = 0;
56void (*fp3)(void) = (void *)0;
57