https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89381
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Known to work| |5.5.0
Keywords|diagnostic, needs-reduction |
Last reconfirmed| |2019-02-18
CC| |jason at gcc dot gnu.org
Ever confirmed|0 |1
Summary|Implicit copy constructor |[7/8/9 Regression] Implicit
|cannot be generated after |copy constructor cannot be
|unrelated class definition |generated after unrelated
| |class definition
Known to fail| |6.4.0, 7.3.0, 8.2.0, 9.0
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Reduced:
template<typename T>
struct base
{
base() { }
base(const base&) { }
base(base&&) { }
base& operator=(const base&) { return *this; }
base& operator=(base&&) { return *this; }
};
struct foo : base<int>
{
using base<int>::base;
using base<int>::operator=;
};
//using workaround = decltype(foo{*static_cast<foo const*>(0)});
struct bar
{
bar& operator=(foo ve)
{
value = ve;
return *this;
}
foo value;
};
int main()
{
foo a;
foo b{a};
}
Regressed with r235002
PR c++/70528
* class.c (type_has_constexpr_default_constructor): Return true
for an implicitly declared constructor.
