| // RUN: %clang_cc1 -fsyntax-only -fcxx-exceptions -verify -pedantic -std=c++11 %s |
| |
| int align_illegal alignas(3); //expected-error {{requested alignment is not a power of 2}} |
| char align_big alignas(int); |
| int align_small alignas(1); // expected-error {{requested alignment is less than minimum}} |
| int align_multiple alignas(1) alignas(8) alignas(1); |
| alignas(4) int align_before; |
| |
| struct align_member { |
| int member alignas(8); |
| int bitfield alignas(1) : 1; // expected-error {{}} |
| }; |
| |
| void f(alignas(1) char c) { // expected-error {{'alignas' attribute cannot be applied to a function parameter}} |
| alignas(1) register char k; // expected-error {{'alignas' attribute cannot be applied to a variable with 'register' storage class}} expected-warning {{deprecated}} |
| try { |
| } catch (alignas(4) int n) { // expected-error {{'alignas' attribute cannot be applied to a 'catch' variable}} |
| } |
| } |
| |
| |
| template <unsigned A> struct alignas(A) align_class_template {}; |
| |
| template <typename... T> struct alignas(T...) align_class_temp_pack_type {}; |
| template <unsigned... A> struct alignas(A...) align_class_temp_pack_expr {}; |
| struct alignas(int...) alignas_expansion_no_packs {}; // expected-error {{pack expansion does not contain any unexpanded parameter packs}} |
| template <typename... A> struct outer { |
| template <typename... B> struct alignas(alignof(A) * alignof(B)...) inner {}; |
| // expected-error@-1 {{pack expansion contains parameter packs 'A' and 'B' that have different lengths (1 vs. 2)}} |
| }; |
| outer<int>::inner<short, double> mismatched_packs; // expected-note {{in instantiation of}} |
| |
| typedef char align_typedef alignas(8); // expected-error {{'alignas' attribute only applies to variables, data members and tag types}} |
| template<typename T> using align_alias_template = align_typedef alignas(8); // expected-error {{'alignas' attribute cannot be applied to types}} |
| |
| static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
| static_assert(alignof(align_small) == 1, "j's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
| static_assert(alignof(align_multiple) == 8, "l's alignment is wrong"); // expected-warning{{'alignof' applied to an expression is a GNU extension}} |
| static_assert(alignof(align_member) == 8, "quuux's alignment is wrong"); |
| static_assert(sizeof(align_member) == 8, "quuux's size is wrong"); |
| static_assert(alignof(align_class_template<8>) == 8, "template's alignment is wrong"); |
| static_assert(alignof(align_class_template<16>) == 16, "template's alignment is wrong"); |
| static_assert(alignof(align_class_temp_pack_type<short, int, long>) == alignof(long), "template's alignment is wrong"); |
| static_assert(alignof(align_class_temp_pack_expr<8, 16, 32>) == 32, "template's alignment is wrong"); |
| static_assert(alignof(outer<int,char>::inner<double,short>) == alignof(int) * alignof(double), "template's alignment is wrong"); |
| |
| static_assert(alignof(int(int)) >= 1, "alignof(function) not positive"); // expected-error{{invalid application of 'alignof' to a function type}} |
| |
| [[__carries_dependency__]] |
| void func(void); |
| |
| alignas(4) auto PR19252 = 0; |