| 1 | // RUN: %clang_cc1 -fsyntax-only -pedantic -verify %s |
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| 2 | |
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| 3 | #define nil (void *)0; |
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| 4 | |
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| 5 | extern void foo(); |
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| 6 | |
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| 7 | @protocol MyProtocol |
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| 8 | - (void) method; |
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| 9 | @end |
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| 10 | |
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| 11 | @interface MyClass |
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| 12 | @end |
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| 13 | |
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| 14 | @interface MyClass (Addition) <MyProtocol> |
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| 15 | - (void) method; |
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| 16 | @end |
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| 17 | |
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| 18 | @interface MyOtherClass : MyClass |
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| 19 | @end |
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| 20 | |
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| 21 | int main() |
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| 22 | { |
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| 23 | id <MyProtocol> obj_id_p = nil; |
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| 24 | MyClass *obj_c_cat_p = nil; |
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| 25 | MyOtherClass *obj_c_super_p = nil; |
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| 26 | MyOtherClass<MyProtocol> *obj_c_super_p_q = nil; |
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| 27 | MyClass<MyProtocol> *obj_c_cat_p_q = nil; |
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| 28 | |
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| 29 | obj_c_cat_p = obj_id_p; |
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| 30 | obj_c_super_p = obj_id_p; |
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| 31 | obj_id_p = obj_c_cat_p; /* Ok */ |
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| 32 | obj_id_p = obj_c_super_p; /* Ok */ |
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| 33 | |
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| 34 | if (obj_c_cat_p == obj_id_p) foo(); /* Ok */ |
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| 35 | if (obj_c_super_p == obj_id_p) foo() ; /* Ok */ |
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| 36 | if (obj_id_p == obj_c_cat_p) foo(); /* Ok */ |
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| 37 | if (obj_id_p == obj_c_super_p) foo(); /* Ok */ |
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| 38 | |
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| 39 | obj_c_cat_p = obj_c_super_p; // ok. |
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| 40 | obj_c_cat_p = obj_c_super_p_q; // ok. |
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| 41 | obj_c_super_p = obj_c_cat_p_q; // expected-warning {{incompatible pointer types}} |
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| 42 | obj_c_cat_p_q = obj_c_super_p; |
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| 43 | return 0; |
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| 44 | } |
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| 45 | |
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