|  | // RUN: %clang_cc1 %s -verify -Wall
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							|  | 
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							|  | _Pragma ("GCC system_header")  // expected-warning {{system_header ignored in main file}}
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							|  | 
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							|  | // rdar://6880630
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							|  | _Pragma("#define macro")    // expected-warning {{unknown pragma ignored}}
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							|  | 
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							|  | #ifdef macro
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							|  | #error #define invalid
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							|  | #endif
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