| 1 | /* Test pragma pop_macro and push_macro directives from |
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| 2 | http://msdn.microsoft.com/en-us/library/hsttss76.aspx */ |
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| 3 | |
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| 4 | // pop_macro: Sets the value of the macro_name macro to the value on the top of |
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| 5 | // the stack for this macro. |
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| 6 | // #pragma pop_macro("macro_name") |
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| 7 | // push_macro: Saves the value of the macro_name macro on the top of the stack |
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| 8 | // for this macro. |
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| 9 | // #pragma push_macro("macro_name") |
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| 10 | // |
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| 11 | // RUN: %clang_cc1 -fms-extensions -E %s -o - | FileCheck %s |
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| 12 | |
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| 13 | #define X 1 |
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| 14 | #define Y 2 |
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| 15 | int pmx0 = X; |
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| 16 | int pmy0 = Y; |
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| 17 | #define Y 3 |
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| 18 | #pragma push_macro("Y") |
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| 19 | #pragma push_macro("X") |
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| 20 | int pmx1 = X; |
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| 21 | #define X 2 |
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| 22 | int pmx2 = X; |
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| 23 | #pragma pop_macro("X") |
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| 24 | int pmx3 = X; |
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| 25 | #pragma pop_macro("Y") |
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| 26 | int pmy1 = Y; |
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| 27 | |
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| 28 | // Have a stray 'push' to show we don't crash when having imbalanced |
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| 29 | // push/pop |
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| 30 | #pragma push_macro("Y") |
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| 31 | #define Y 4 |
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| 32 | int pmy2 = Y; |
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| 33 | |
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| 34 | // The sequence push, define/undef, pop caused problems if macro was not |
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| 35 | // previously defined. |
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| 36 | #pragma push_macro("PREVIOUSLY_UNDEFINED1") |
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| 37 | #undef PREVIOUSLY_UNDEFINED1 |
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| 38 | #pragma pop_macro("PREVIOUSLY_UNDEFINED1") |
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| 39 | #ifndef PREVIOUSLY_UNDEFINED1 |
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| 40 | int Q; |
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| 41 | #endif |
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| 42 | |
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| 43 | #pragma push_macro("PREVIOUSLY_UNDEFINED2") |
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| 44 | #define PREVIOUSLY_UNDEFINED2 |
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| 45 | #pragma pop_macro("PREVIOUSLY_UNDEFINED2") |
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| 46 | #ifndef PREVIOUSLY_UNDEFINED2 |
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| 47 | int P; |
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| 48 | #endif |
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| 49 | |
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| 50 | // CHECK: int pmx0 = 1 |
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| 51 | // CHECK: int pmy0 = 2 |
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| 52 | // CHECK: int pmx1 = 1 |
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| 53 | // CHECK: int pmx2 = 2 |
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| 54 | // CHECK: int pmx3 = 1 |
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| 55 | // CHECK: int pmy1 = 3 |
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| 56 | // CHECK: int pmy2 = 4 |
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| 57 | // CHECK: int Q; |
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| 58 | // CHECK: int P; |
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| 59 | |
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