[Bug c++/38611] [4.2/4.3/4.4 Regression] alignof is broken for user aligned types in templates

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2008-12-29 19:01 -------
If we swap around the MyStruct and the attribute, it works.

But if we do this:
struct MyStruct1 {
    unsigned char skip[272];
} ;

typedef struct MyStruct1 MyStruct __attribute__((aligned(128) ));

template<typename T>
int GetAlignOf()
{
    int a[ __alignof__(T) != __alignof__(MyStruct) ? -1 : 1];
    return __alignof__(T);
};
int main()
{
    int al1 = GetAlignOf<MyStruct>();
    int al2 = __alignof__(MyStruct);
    return al1 - al2;
}

--- CUT ---
It fails.  Meaning we are still losing the user alignment for typedefs.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38611