llvm-project

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no-canceling-bridge-to-bridge-cast.m 
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// RUN: %clang_cc1 -arcmt-action=check -triple x86_64-apple-darwin10 -fsyntax-only -x objective-c -verify %s
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typedef const void * CFTypeRef;
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CFTypeRef CFBridgingRetain(id X);
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id CFBridgingRelease(CFTypeRef);
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extern 
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CFTypeRef CFRetain(CFTypeRef cf);
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@interface INTF
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{
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  void *cf_format;
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  id objc_format;
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}
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@end
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@interface NSString
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+ (id)stringWithFormat:(NSString *)format;
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@end
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@implementation INTF
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- (void) Meth {
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  NSString *result;
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  result = (id) CFRetain([NSString stringWithFormat:@"PBXLoopMode"]); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
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								      // expected-note {{use __bridge to convert directly (no change in ownership)}} \
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								      // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
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  result = (id) CFRetain((id)((objc_format))); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
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					       // expected-note {{use __bridge to convert directly (no change in ownership)}} \
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					       // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
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  result = (id) CFRetain((id)((cf_format))); // expected-error {{cast of C pointer type 'CFTypeRef' (aka 'const void *') to Objective-C pointer type 'id' requires a bridged cast}} \
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					     // expected-note {{use __bridge to convert directly (no change in ownership)}} \
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                                             // expected-note {{use CFBridgingRelease call to transfer ownership of a +1 'CFTypeRef' (aka 'const void *') into ARC}}
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  result = (id) CFRetain((CFTypeRef)((objc_format)));
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  result = (id) CFRetain(cf_format); // OK
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}
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@end
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