| 1 | // RUN: %clang_cc1 -fsyntax-only -fcxx-exceptions -verify -pedantic -std=c++11 %s |
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| 2 | |
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| 3 | int align_illegal alignas(3); //expected-error {{requested alignment is not a power of 2}} |
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| 4 | char align_big alignas(int); |
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| 5 | int align_small alignas(1); // expected-error {{requested alignment is less than minimum}} |
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| 6 | int align_multiple alignas(1) alignas(8) alignas(1); |
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| 7 | alignas(4) int align_before; |
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| 8 | |
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| 9 | struct align_member { |
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| 10 | int member alignas(8); |
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| 11 | int bitfield alignas(1) : 1; // expected-error {{}} |
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| 12 | }; |
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| 13 | |
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| 14 | void f(alignas(1) char c) { // expected-error {{'alignas' attribute cannot be applied to a function parameter}} |
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| 15 | alignas(1) register char k; // expected-error {{'alignas' attribute cannot be applied to a variable with 'register' storage class}} expected-warning {{deprecated}} |
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| 16 | try { |
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| 17 | } catch (alignas(4) int n) { // expected-error {{'alignas' attribute cannot be applied to a 'catch' variable}} |
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| 18 | } |
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| 19 | } |
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| 20 | |
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| 21 | |
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| 22 | template <unsigned A> struct alignas(A) align_class_template {}; |
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| 23 | |
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| 24 | template <typename... T> struct alignas(T...) align_class_temp_pack_type {}; |
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| 25 | template <unsigned... A> struct alignas(A...) align_class_temp_pack_expr {}; |
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| 26 | struct alignas(int...) alignas_expansion_no_packs {}; // expected-error {{pack expansion does not contain any unexpanded parameter packs}} |
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| 27 | template <typename... A> struct outer { |
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| 28 | template <typename... B> struct alignas(alignof(A) * alignof(B)...) inner {}; |
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| 29 | // expected-error@-1 {{pack expansion contains parameter packs 'A' and 'B' that have different lengths (1 vs. 2)}} |
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| 30 | }; |
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| 31 | outer<int>::inner<short, double> mismatched_packs; // expected-note {{in instantiation of}} |
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| 32 | |
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| 33 | typedef char align_typedef alignas(8); // expected-error {{'alignas' attribute only applies to variables, data members and tag types}} |
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| 34 | template<typename T> using align_alias_template = align_typedef alignas(8); // expected-error {{'alignas' attribute cannot be applied to types}} |
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| 35 | |
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| 36 | static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
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| 37 | static_assert(alignof(align_small) == 1, "j's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
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| 38 | static_assert(alignof(align_multiple) == 8, "l's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
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| 39 | static_assert(alignof(align_member) == 8, "quuux's alignment is wrong"); |
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| 40 | static_assert(sizeof(align_member) == 8, "quuux's size is wrong"); |
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| 41 | static_assert(alignof(align_class_template<8>) == 8, "template's alignment is wrong"); |
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| 42 | static_assert(alignof(align_class_template<16>) == 16, "template's alignment is wrong"); |
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| 43 | static_assert(alignof(align_class_temp_pack_type<short, int, long>) == alignof(long), "template's alignment is wrong"); |
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| 44 | static_assert(alignof(align_class_temp_pack_expr<8, 16, 32>) == 32, "template's alignment is wrong"); |
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| 45 | static_assert(alignof(outer<int,char>::inner<double,short>) == alignof(int) * alignof(double), "template's alignment is wrong"); |
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| 46 | |
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| 47 | static_assert(alignof(int(int)) >= 1, "alignof(function) not positive"); // expected-error{{invalid application of 'alignof' to a function type}} |
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| 48 | |
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| 49 | [[__carries_dependency__]] // expected-warning{{unknown attribute '__carries_dependency__' ignored}} |
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| 50 | void func(void); |
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| 51 | |
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| 52 | alignas(4) auto PR19252 = 0; |
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| 53 | |
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