On 12/12/2012 02:57 AM, Richard Biener wrote:
> That looks wrong. Having both TYPE_PACKED and TYPE_ALIGN != BITS_PER_UNIT
> is inconsistent, so this part of the patch should not be necessary.
No, that is the only way to give a 4 byte int 2 byte alignment:
use both packed and aligned attributes.
struct S {
char x;
int y;
};
struct T {
char x;
int y __attribute__((aligned(2)));
};
struct U {
char x;
int y __attribute__((packed, aligned(2)));
};
int s_y = __builtin_offsetof(struct S, y);
int t_y = __builtin_offsetof(struct T, y);
int u_y = __builtin_offsetof(struct U, y);
r~
