1 /* Test various ObjC types assignments and comparisons. */
2 /* Author: Nicola Pero <nicola@brainstorm.co.uk>. */
3 /* { dg-do compile } */
14 @interface MyOtherClass <MyProtocol>
21 id<MyProtocol> obj_p = nil;
23 MyOtherClass *obj_cp = nil;
26 /* Assigning to an 'id' variable should never
27 generate a warning. */
30 obj = obj_cp; /* Ok */
33 /* Assigning to a 'MyClass *' variable should always generate a
34 warning, unless done from an 'id'. */
36 obj_c = obj_p; /* { dg-warning "distinct Objective\\-C type" } */
37 obj_c = obj_cp; /* { dg-warning "distinct Objective\\-C type" } */
38 obj_c = obj_C; /* { dg-warning "distinct Objective\\-C type" } */
40 /* Assigning to an 'id<MyProtocol>' variable should generate a
41 warning if done from a 'MyClass *' (which doesn't implement
42 MyProtocol), but not from an 'id' or from a 'MyOtherClass *'
43 (which implements MyProtocol). */
45 obj_p = obj_c; /* { dg-warning "does not implement" } */
46 obj_p = obj_cp; /* Ok */
47 obj_p = obj_C; /* { dg-warning "distinct Objective\\-C type" } */
49 /* Assigning to a 'MyOtherClass *' variable should always generate
50 a warning, unless done from an 'id' or an 'id<MyProtocol>' (since
51 MyOtherClass implements MyProtocol). */
52 obj_cp = obj; /* Ok */
53 obj_cp = obj_c; /* { dg-warning "distinct Objective\\-C type" } */
54 obj_cp = obj_p; /* Ok */
55 obj_cp = obj_C; /* { dg-warning "distinct Objective\\-C type" } */
57 /* Any comparison involving an 'id' must be without warnings. */
58 if (obj == obj_p) ; /* Ok */ /*Bogus warning here in 2.95.4*/
59 if (obj_p == obj) ; /* Ok */
60 if (obj == obj_c) ; /* Ok */
61 if (obj_c == obj) ; /* Ok */
62 if (obj == obj_cp) ; /* Ok */
63 if (obj_cp == obj) ; /* Ok */
64 if (obj == obj_C) ; /* Ok */
65 if (obj_C == obj) ; /* Ok */
67 /* Any comparison between 'MyClass *' and anything which is not an 'id'
68 must generate a warning. */
69 if (obj_c == obj_p) ; /* { dg-warning "lacks a cast" } */
70 if (obj_p == obj_c) ; /* { dg-warning "lacks a cast" } */
71 if (obj_c == obj_cp) ; /* { dg-warning "lacks a cast" } */
72 if (obj_cp == obj_c) ; /* { dg-warning "lacks a cast" } */
73 if (obj_c == obj_C) ; /* { dg-warning "lacks a cast" } */
74 if (obj_C == obj_c) ; /* { dg-warning "lacks a cast" } */
76 /* Any comparison between 'MyOtherClass *' (which implements
77 MyProtocol) and an 'id' implementing MyProtocol are Ok. */
78 if (obj_cp == obj_p) ; /* Ok */
79 if (obj_p == obj_cp) ; /* Ok */
82 if (obj_p == obj_C) ; /* { dg-warning "lacks a cast" } */
83 if (obj_C == obj_p) ; /* { dg-warning "lacks a cast" } */
84 if (obj_cp == obj_C) ; /* { dg-warning "lacks a cast" } */
85 if (obj_C == obj_cp) ; /* { dg-warning "lacks a cast" } */