[Bug c++/59579] Defaulted copy constructor of template class is instantiated even when not called (probably bug 57153)

[Konstantin.Sadov at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59579

--- Comment #1 from Konstantin Sadov <Konstantin.Sadov at gmail dot com> ---
Similar programs with defaulted default and move constructors work, so the
problem is for copy constructor only.

struct A{A()=delete;A(A&)=default;};
template <typename B>
struct C:B{C()=default;C(C&)=default;};
C<A> d(d);
int main(){}


struct A{A()=default;A(A&&)=delete;};
template <typename B>
struct C:B{C()=default;C(C&&)=default;};
C<A> d;
int main(){}