1/* Test errors for assignments and comparisons between ObjC and C++ types.  */
2/* Author: Nicola Pero <nicola@brainstorm.co.uk>.  */
3/* { dg-do compile } */
4
5#include <objc/objc.h>
6
7/* The NeXT runtime headers do not define NULL.  */
8#ifndef NULL
9#define NULL ((void *)0)
10#endif
11
12@protocol MyProtocol
13- (void) method;
14@end
15
16@interface MyClass
17@end
18
19int main()
20{
21  id obj = nil;
22  id <MyProtocol> obj_p = nil;
23  MyClass *obj_c = nil;
24  Class obj_C = Nil;
25
26  int i = 0;
27  int *j = (int *)NULL;
28
29  /* These should all generate warnings.  */
30
31  obj = i; /* { dg-error "invalid conversion" } */
32  obj = j; /* { dg-error "cannot convert" } */
33
34  obj_p = i; /* { dg-error "invalid conversion" } */
35  obj_p = j; /* { dg-error "cannot convert" } */
36
37  obj_c = i; /* { dg-error "invalid conversion" } */
38  obj_c = j; /* { dg-error "cannot convert" } */
39
40  obj_C = i; /* { dg-error "invalid conversion" } */
41  obj_C = j; /* { dg-error "cannot convert" } */
42
43  i = obj;   /* { dg-error "invalid conversion" } */
44  i = obj_p; /* { dg-error "invalid conversion" } */
45  i = obj_c; /* { dg-error "invalid conversion" } */
46  i = obj_C; /* { dg-error "invalid conversion" } */
47
48  j = obj;   /* { dg-error "cannot convert" } */
49  j = obj_p; /* { dg-error "cannot convert" } */
50  j = obj_c; /* { dg-error "cannot convert" } */
51  j = obj_C; /* { dg-error "cannot convert" } */
52
53  if (obj == i) ; /* { dg-error "comparison between pointer and integer" } */
54  if (i == obj) ; /* { dg-error "comparison between pointer and integer" } */
55  if (obj == j) ; /* { dg-error "lacks a cast" } */
56  if (j == obj) ; /* { dg-error "lacks a cast" } */
57
58  if (obj_c == i) ; /*{ dg-error "comparison between pointer and integer" }*/
59  if (i == obj_c) ; /*{ dg-error "comparison between pointer and integer" }*/
60  if (obj_c == j) ; /* { dg-error "lacks a cast" } */
61  if (j == obj_c) ; /* { dg-error "lacks a cast" } */
62
63  if (obj_p == i) ; /*{ dg-error "comparison between pointer and integer" }*/
64  if (i == obj_p) ; /*{ dg-error "comparison between pointer and integer" }*/
65  if (obj_p == j) ; /* { dg-error "lacks a cast" } */
66  if (j == obj_p) ; /* { dg-error "lacks a cast" } */
67
68  if (obj_C == i) ; /*{ dg-error "comparison between pointer and integer" }*/
69  if (i == obj_C) ; /*{ dg-error "comparison between pointer and integer" }*/
70  if (obj_C == j) ; /* { dg-error "lacks a cast" } */
71  if (j == obj_C) ; /* { dg-error "lacks a cast" } */
72
73  return 0;
74}
75