1 // { dg-do compile { target c++11 } } 2 // 3 // There were two related problems here, depending on the vintage. At 4 // one time: 5 // 6 // typedef struct A { ... } A [[gnu::aligned (16)]]; 7 // 8 // would cause original_types to go into an infinite loop. At other 9 // times, the attributes applied to an explicit typedef would be lost 10 // (check_b3 would have a negative size). 11 12 // First check that the declaration is accepted and has an effect. 13 typedef struct A { int i; } A [[gnu::aligned (16)]]; 14 int check_A[alignof (A) >= 16 ? 1 : -1]; 15 16 // Check that the alignment is only applied to the typedef. 17 struct B { int i; }; 18 struct B b1; 19 typedef struct B B [[gnu::aligned (16)]]; 20 struct B b2; 21 B b3; 22 int check_b1[__alignof__ (b1) == __alignof__ (b2) ? 1 : -1]; 23 int check_b3[__alignof__ (b3) >= 16 ? 1 : -1]; 24