https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104588
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |middle-end
Last reconfirmed| |2022-02-18
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Summary|user-defined constructor |memset loses alignment
|loses alignment information |infomation in some cases
|about `*this` |
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed,
Reduced testcase:
struct alignas(16) foo
{
unsigned char a[32];
};
foo* construct(foo* p)
{
__builtin_memset(p, 0, sizeof(foo));
return p;
}
----- CUT ----
That is it has nothing to do with the constructors at all but just memset.
