| 1 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=__alignof %s |
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| 2 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=_Alignof -DUSING_C11_SYNTAX %s |
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| 3 | |
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| 4 | _Alignas(3) int align_illegal; //expected-error {{requested alignment is not a power of 2}} |
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| 5 | _Alignas(int) char align_big; |
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| 6 | _Alignas(1) int align_small; // expected-error {{requested alignment is less than minimum}} |
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| 7 | _Alignas(1) unsigned _Alignas(8) int _Alignas(1) align_multiple; |
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| 8 | |
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| 9 | struct align_member { |
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| 10 | _Alignas(8) int member; |
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| 11 | _Alignas(1) char bitfield : 1; // expected-error {{'_Alignas' attribute cannot be applied to a bit-field}} |
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| 12 | }; |
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| 13 | |
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| 14 | typedef _Alignas(8) char align_typedef; // expected-error {{'_Alignas' attribute only applies to variables and fields}} |
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| 15 | |
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| 16 | void f(_Alignas(1) char c) { // expected-error {{'_Alignas' attribute cannot be applied to a function parameter}} |
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| 17 | _Alignas(1) register char k; // expected-error {{'_Alignas' attribute cannot be applied to a variable with 'register' storage class}} |
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| 18 | } |
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| 19 | |
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| 20 | #ifdef USING_C11_SYNTAX |
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| 21 | // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} |
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| 22 | // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} |
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| 23 | // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} |
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| 24 | #endif |
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| 25 | _Static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong"); |
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| 26 | _Static_assert(alignof(align_small) == 1, "j's alignment is wrong"); |
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| 27 | _Static_assert(alignof(align_multiple) == 8, "l's alignment is wrong"); |
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| 28 | _Static_assert(alignof(struct align_member) == 8, "quuux's alignment is wrong"); |
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| 29 | _Static_assert(sizeof(struct align_member) == 8, "quuux's size is wrong"); |
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| 30 | |
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