| 1 | // RUN: %clang_cc1 -emit-pch %s -o %t |
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| 2 | // RUN: %clang_cc1 -include-pch %t -verify %s |
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| 3 | |
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| 4 | #ifndef HEADER_INCLUDED |
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| 5 | |
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| 6 | #define HEADER_INCLUDED |
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| 7 | |
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| 8 | @protocol NSObject |
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| 9 | @end |
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| 10 | |
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| 11 | __attribute__((objc_root_class)) |
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| 12 | @interface NSObject |
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| 13 | @end |
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| 14 | |
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| 15 | @interface PC1<__covariant T, U : NSObject *> : NSObject |
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| 16 | // expected-note@-2{{type parameter 'U' declared here}} |
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| 17 | @end |
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| 18 | |
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| 19 | @interface PC1<__covariant T, U : NSObject *> (Cat1) |
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| 20 | @end |
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| 21 | |
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| 22 | typedef PC1<id, NSObject *> PC1Specialization1; |
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| 23 | |
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| 24 | typedef PC1Specialization1 <NSObject> PC1Specialization2; |
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| 25 | #else |
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| 26 | |
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| 27 | @interface PC1<T : NSObject *, // expected-error{{type bound 'NSObject *' for type parameter 'T' conflicts with implicit bound 'id}} |
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| 28 | // expected-note@15{{type parameter 'T' declared here}} |
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| 29 | U : id> (Cat2) // expected-error{{type bound 'id' for type parameter 'U' conflicts with previous bound 'NSObject *'}} |
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| 30 | // expected-note@15{{type parameter 'U' declared here}} |
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| 31 | @end |
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| 32 | |
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| 33 | typedef PC1Specialization1<id, NSObject *> PC1Specialization3; // expected-error{{type arguments cannot be applied to already-specialized class type 'PC1Specialization1' (aka 'PC1<id,NSObject *>')}} |
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| 34 | |
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| 35 | typedef PC1Specialization2<id, NSObject *> PC1Specialization4; // expected-error{{already-specialized class type 'PC1Specialization2' (aka 'PC1Specialization1<NSObject>')}} |
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| 36 | |
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| 37 | @interface NSString : NSObject |
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| 38 | @end |
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| 39 | |
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| 40 | void testCovariance(PC1<NSObject *, NSObject *> *pc1a, |
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| 41 | PC1<NSString *, NSObject *> *pc1b) { |
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| 42 | pc1a = pc1b; |
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| 43 | } |
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| 44 | |
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| 45 | #endif |
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| 46 | |
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