[Bug c++/59659] large zero-initialized std::array compile time excessive

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59659

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
For the #c0 testcase, I think reduced testcase is:
struct S { S (); S (int); ~S (); int i; };
struct A { S s[1000000]; };

void
foo ()
{
  A a = {{}};
}
and in that case we don't go through build_vec_init, but
check_init_r/process_init_constructor etc.