| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s |
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| 2 | |
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| 3 | @class FOO, BAR; // expected-note {{forward declaration of class here}} |
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| 4 | @class FOO, BAR; |
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| 5 | |
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| 6 | @interface INTF : FOO // expected-error {{attempting to use the forward class 'FOO' as superclass of 'INTF'}} |
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| 7 | @end |
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| 8 | |
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| 9 | @interface FOO |
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| 10 | - (BAR*) Meth1; |
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| 11 | - (FOO*) Meth2; |
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| 12 | @end |
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| 13 | |
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| 14 | @interface INTF1 : FOO |
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| 15 | @end |
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| 16 | |
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| 17 | @interface INTF2 : INTF1 // expected-note {{previous definition is here}} |
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| 18 | @end |
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| 19 | |
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| 20 | |
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| 21 | @class INTF1, INTF2; |
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| 22 | |
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| 23 | @interface INTF2 : INTF1 // expected-error {{duplicate interface definition for class 'INTF2'}} |
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| 24 | @end |
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| 25 | |
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| 26 | // 2nd test of a forward class declaration matching a typedef name |
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| 27 | // referring to class object. |
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| 28 | // FIXME. This may become a negative test should we decide to make this an error. |
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| 29 | // |
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| 30 | @interface NSObject @end |
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| 31 | |
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| 32 | @protocol XCElementP @end |
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| 33 | |
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| 34 | typedef NSObject <XCElementP> XCElement; // expected-note {{previous definition is here}} |
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| 35 | |
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| 36 | @interface XCElementMainImp { |
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| 37 | XCElement * _editingElement; |
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| 38 | } |
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| 39 | @end |
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| 40 | |
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| 41 | @class XCElement; // expected-warning {{redefinition of forward class 'XCElement' of a typedef name of an object type is ignored}} |
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| 42 | |
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| 43 | @implementation XCElementMainImp |
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| 44 | - (XCElement *)editingElement { return _editingElement; } |
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| 45 | @end |
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| 46 | |
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| 47 | |
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| 48 | // rdar://9653341 |
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| 49 | @class B; // expected-note {{forward declaration of class here}} |
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| 50 | @interface A : B {} // expected-error {{attempting to use the forward class 'B' as superclass of 'A'}} |
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| 51 | @end |
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| 52 | |
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| 53 | @interface B : A {} |
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| 54 | @end |
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| 55 | |
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| 56 | @implementation A @end |
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| 57 | @implementation B @end |
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| 58 | |
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| 59 | |
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