| 1 | // RUN: %clang_cc1 -triple i686-apple-darwin9 %s -fsyntax-only -verify |
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| 2 | // expected-no-diagnostics |
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| 3 | |
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| 4 | // Stack: [], Alignment: 8 |
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| 5 | |
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| 6 | #pragma pack(push, 1) |
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| 7 | // Stack: [8], Alignment: 1 |
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| 8 | |
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| 9 | #pragma pack(push, 4) |
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| 10 | // Stack: [8, 1], Alignment: 4 |
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| 11 | |
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| 12 | // Note that this differs from gcc; pack() in gcc appears to pop the |
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| 13 | // top stack entry and resets the current alignment. This is both |
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| 14 | // inconsistent with MSVC, and the gcc documentation. In other cases, |
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| 15 | // for example changing this to pack(8), I don't even understand what gcc |
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| 16 | // is doing. |
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| 17 | |
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| 18 | #pragma pack() |
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| 19 | // Stack: [8, 1], Alignment: 8 |
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| 20 | |
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| 21 | #pragma pack(pop) |
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| 22 | // Stack: [8], Alignment: 1 |
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| 23 | struct s0 { |
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| 24 | char f0; |
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| 25 | short f1; |
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| 26 | }; |
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| 27 | int a[sizeof(struct s0) == 3 ? 1 : -1]; |
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| 28 | |
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| 29 | #pragma pack(pop) |
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| 30 | // Stack: [], Alignment: 8 |
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| 31 | struct s1 { |
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| 32 | char f0; |
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| 33 | short f1; |
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| 34 | }; |
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| 35 | int b[sizeof(struct s1) == 4 ? 1 : -1]; |
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| 36 | |
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