1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=__alignof %s 2*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -verify -std=c11 -Dalignof=_Alignof -DUSING_C11_SYNTAX %s 3*67e74705SXin Li 4*67e74705SXin Li _Alignas(3) int align_illegal; //expected-error {{requested alignment is not a power of 2}} 5*67e74705SXin Li _Alignas(int) char align_big; 6*67e74705SXin Li _Alignas(1) int align_small; // expected-error {{requested alignment is less than minimum}} 7*67e74705SXin Li _Alignas(1) unsigned _Alignas(8) int _Alignas(1) align_multiple; 8*67e74705SXin Li 9*67e74705SXin Li struct align_member { 10*67e74705SXin Li _Alignas(8) int member; 11*67e74705SXin Li _Alignas(1) char bitfield : 1; // expected-error {{'_Alignas' attribute cannot be applied to a bit-field}} 12*67e74705SXin Li }; 13*67e74705SXin Li 14*67e74705SXin Li typedef _Alignas(8) char align_typedef; // expected-error {{'_Alignas' attribute only applies to variables and fields}} 15*67e74705SXin Li f(char c)16*67e74705SXin Livoid f(_Alignas(1) char c) { // expected-error {{'_Alignas' attribute cannot be applied to a function parameter}} 17*67e74705SXin Li _Alignas(1) register char k; // expected-error {{'_Alignas' attribute cannot be applied to a variable with 'register' storage class}} 18*67e74705SXin Li } 19*67e74705SXin Li 20*67e74705SXin Li #ifdef USING_C11_SYNTAX 21*67e74705SXin Li // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} 22*67e74705SXin Li // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} 23*67e74705SXin Li // expected-warning@+4{{'_Alignof' applied to an expression is a GNU extension}} 24*67e74705SXin Li #endif 25*67e74705SXin Li _Static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong"); 26*67e74705SXin Li _Static_assert(alignof(align_small) == 1, "j's alignment is wrong"); 27*67e74705SXin Li _Static_assert(alignof(align_multiple) == 8, "l's alignment is wrong"); 28*67e74705SXin Li _Static_assert(alignof(struct align_member) == 8, "quuux's alignment is wrong"); 29*67e74705SXin Li _Static_assert(sizeof(struct align_member) == 8, "quuux's size is wrong"); 30