| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 2 | // expected-no-diagnostics |
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| 3 | |
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| 4 | #include <stddef.h> |
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| 5 | |
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| 6 | typedef struct objc_class *Class; |
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| 7 | typedef struct objc_object { |
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| 8 | Class isa; |
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| 9 | } *id; |
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| 10 | id objc_getClass(const char *s); |
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| 11 | |
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| 12 | @interface Object |
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| 13 | + self; |
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| 14 | @end |
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| 15 | |
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| 16 | @protocol Func |
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| 17 | + (void) class_func0; |
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| 18 | - (void) instance_func0; |
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| 19 | @end |
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| 20 | |
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| 21 | @interface Derived: Object <Func> |
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| 22 | @end |
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| 23 | |
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| 24 | @interface Derived2: Object <Func> |
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| 25 | @end |
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| 26 | |
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| 27 | static void doSomething(Class <Func> unsupportedObjectType) { |
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| 28 | [unsupportedObjectType class_func0]; |
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| 29 | } |
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| 30 | |
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| 31 | static void doSomethingElse(id <Func> pleaseConvertToThisType) { |
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| 32 | [pleaseConvertToThisType class_func0]; |
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| 33 | } |
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| 34 | |
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| 35 | int main(int argv, char *argc[]) { |
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| 36 | doSomething([Derived self]); |
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| 37 | doSomething([Derived2 self]); |
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| 38 | doSomethingElse([Derived self]); |
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| 39 | doSomethingElse([Derived2 self]); |
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| 40 | } |
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| 41 | |
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| 42 | |
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