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