| 1 | // RUN: %clang_cc1 -std=c11 -triple i386-apple-darwin9 -fsyntax-only -verify %s |
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| 2 | // expected-no-diagnostics |
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| 3 | |
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| 4 | #define STATIC_ASSERT(cond) _Static_assert(cond, #cond) |
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| 5 | |
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| 6 | // PR3433 |
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| 7 | #define CHECK_ALIGNMENT(type, name, abi, pref) \ |
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| 8 | type name; \ |
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| 9 | STATIC_ASSERT(__alignof__(name) == pref); \ |
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| 10 | STATIC_ASSERT(__alignof__(type) == pref); \ |
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| 11 | STATIC_ASSERT(_Alignof(type) == abi) |
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| 12 | |
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| 13 | CHECK_ALIGNMENT(double, g_double, 4, 8); |
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| 14 | CHECK_ALIGNMENT(long long, g_longlong, 4, 8); |
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| 15 | CHECK_ALIGNMENT(unsigned long long, g_ulonglong, 4, 8); |
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| 16 | CHECK_ALIGNMENT(_Complex double, g_complexdouble, 4, 8); |
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| 17 | |
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| 18 | // PR6362 |
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| 19 | struct __attribute__((packed)) |
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| 20 | packed_struct { |
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| 21 | unsigned int a; |
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| 22 | }; |
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| 23 | CHECK_ALIGNMENT(struct packed_struct, g_packedstruct, 1, 1); |
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| 24 | STATIC_ASSERT(__alignof__(g_packedstruct.a) == 1); |
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| 25 | |
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| 26 | typedef double arr3double[3]; |
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| 27 | CHECK_ALIGNMENT(arr3double, g_arr3double, 4, 8); |
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| 28 | |
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| 29 | enum big_enum { x = 18446744073709551615ULL }; |
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| 30 | CHECK_ALIGNMENT(enum big_enum, g_bigenum, 4, 8); |
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| 31 | |
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| 32 | // PR5637 |
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| 33 | |
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| 34 | #define ALIGNED(x) __attribute__((aligned(x))) |
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| 35 | |
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| 36 | typedef ALIGNED(2) struct { |
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| 37 | char a[3]; |
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| 38 | } aligned_before_struct; |
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| 39 | |
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| 40 | STATIC_ASSERT(sizeof(aligned_before_struct) == 3); |
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| 41 | STATIC_ASSERT(sizeof(aligned_before_struct[1]) == 4); |
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| 42 | STATIC_ASSERT(sizeof(aligned_before_struct[2]) == 6); |
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| 43 | STATIC_ASSERT(sizeof(aligned_before_struct[2][1]) == 8); |
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| 44 | STATIC_ASSERT(sizeof(aligned_before_struct[1][2]) == 6); |
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| 45 | |
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| 46 | typedef struct ALIGNED(2) { |
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| 47 | char a[3]; |
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| 48 | } aligned_after_struct; |
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| 49 | |
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| 50 | STATIC_ASSERT(sizeof(aligned_after_struct) == 4); |
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| 51 | STATIC_ASSERT(sizeof(aligned_after_struct[1]) == 4); |
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| 52 | STATIC_ASSERT(sizeof(aligned_after_struct[2]) == 8); |
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| 53 | STATIC_ASSERT(sizeof(aligned_after_struct[2][1]) == 8); |
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| 54 | STATIC_ASSERT(sizeof(aligned_after_struct[1][2]) == 8); |
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| 55 | |
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