| // RUN: %clang_cc1 -std=c++11 -verify %s |
| |
| alignas(4) extern int n1; // expected-note {{previous declaration}} |
| alignas(8) int n1; // expected-error {{redeclaration has different alignment requirement (8 vs 4)}} |
| |
| alignas(8) int n2; // expected-note {{previous declaration}} |
| alignas(4) extern int n2; // expected-error {{different alignment requirement (4 vs 8)}} |
| |
| alignas(8) extern int n3; // expected-note {{previous declaration}} |
| alignas(4) extern int n3; // expected-error {{different alignment requirement (4 vs 8)}} |
| |
| extern int n4; |
| alignas(8) extern int n4; |
| |
| alignas(8) extern int n5; |
| extern int n5; |
| |
| int n6; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| alignas(8) extern int n6; // expected-note {{declared with 'alignas' attribute here}} |
| |
| extern int n7; |
| alignas(8) int n7; |
| |
| alignas(8) extern int n8; // expected-note {{declared with 'alignas' attribute here}} |
| int n8; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| |
| int n9; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| alignas(4) extern int n9; // expected-note {{declared with 'alignas' attribute here}} |
| |
| |
| enum alignas(2) E : char; // expected-note {{declared with 'alignas' attribute here}} |
| enum E : char {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| |
| enum alignas(4) F : char; // expected-note {{previous declaration is here}} |
| enum alignas(2) F : char; // expected-error {{redeclaration has different alignment requirement (2 vs 4)}} |
| |
| enum G : char; |
| enum alignas(8) G : char {}; |
| enum G : char; |
| |
| enum H : char {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| enum alignas(1) H : char; // expected-note {{declared with 'alignas' attribute here}} |
| |
| |
| struct S; |
| struct alignas(16) S; // expected-note {{declared with 'alignas' attribute here}} |
| struct S; |
| struct S { int n; }; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| |
| struct alignas(2) T; |
| struct alignas(2) T { char c; }; // expected-note {{previous declaration is here}} |
| struct T; |
| struct alignas(4) T; // expected-error {{redeclaration has different alignment requirement (4 vs 2)}} |
| |
| struct U; |
| struct alignas(2) U {}; |
| |
| struct V {}; // expected-error {{'alignas' must be specified on definition if it is specified on any declaration}} |
| struct alignas(1) V; // expected-note {{declared with 'alignas' attribute here}} |
| |
| template<int M, int N> struct alignas(M) W; |
| template<int M, int N> struct alignas(N) W {}; |
| W<4,4> w44; // ok |
| // FIXME: We should reject this. |
| W<1,2> w12; |
| static_assert(alignof(W<4,4>) == 4, ""); |
| |
| template<int M, int N, int O, int P> struct X { |
| alignas(M) alignas(N) static char Buffer[32]; // expected-note {{previous declaration is here}} |
| }; |
| template<int M, int N, int O, int P> |
| alignas(O) alignas(P) char X<M, N, O, P>::Buffer[32]; // expected-error {{redeclaration has different alignment requirement (8 vs 2)}} |
| char *x1848 = X<1,8,4,8>::Buffer; // ok |
| char *x1248 = X<1,2,4,8>::Buffer; // expected-note {{in instantiation of}} |
| |
| template<int M, int N, int O, int P> struct Y { |
| enum alignas(M) alignas(N) E : char; |
| }; |
| template<int M, int N, int O, int P> |
| enum alignas(O) alignas(P) Y<M,N,O,P>::E : char { e }; |
| int y1848 = Y<1,8,4,8>::e; |
| // FIXME: We should reject this. |
| int y1248 = Y<1,2,4,8>::e; |
| |
| // Don't crash here. |
| alignas(4) struct Incomplete incomplete; // expected-error {{incomplete type}} expected-note {{forward declaration}} |
