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							// RUN: %clang_cc1 %s -fsyntax-only -verify
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							// expected-no-diagnostics
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							// rdar://8632525
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							typedef struct objc_class *Class;
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							typedef struct objc_object {
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							    Class isa;
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							} *id;
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							typedef struct objc_selector *SEL;
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							extern id objc_msgSend(id self, SEL op, ...);
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