| 1 | // RUN: %clang_cc1 %s -emit-pch -o %t1.pch -verify |
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| 2 | // RUN: %clang_cc1 %s -emit-pch -o %t2.pch -include-pch %t1.pch -verify |
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| 3 | // RUN: %clang_cc1 -fsyntax-only %s -include-pch %t2.pch -verify |
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| 4 | |
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| 5 | // Test that a redefinition inside the PCH won't manifest as an ambiguous macro. |
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| 6 | // rdar://13016031 |
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| 7 | |
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| 8 | #ifndef HEADER1 |
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| 9 | #define HEADER1 |
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| 10 | |
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| 11 | #define M1 0 // expected-note {{previous}} |
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| 12 | #define M1 1 // expected-warning {{redefined}} |
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| 13 | |
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| 14 | #define M2 3 |
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| 15 | |
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| 16 | #elif !defined(HEADER2) |
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| 17 | #define HEADER2 |
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| 18 | |
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| 19 | #define M2 4 // expected-warning {{redefined}} |
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| 20 | // expected-note@-6 {{previous}} |
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| 21 | |
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| 22 | #else |
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| 23 | |
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| 24 | // Use the error to verify it was parsed. |
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| 25 | int x = M1; // expected-note {{previous}} |
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| 26 | int x = M2; // expected-error {{redefinition}} |
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| 27 | |
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| 28 | #endif |
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| 29 | |
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