[Bug c++/92948] internal compiler error: in tsubst_copy, at cp/pt.c:15788

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92948

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
A related test that I think should compile:

struct A {
  constexpr A(int) { }
};

template<A a>
struct B {
};

template<int X>
void foo()
{
  B<X> b; // works with B<1>
}

void
fn ()
{
  foo<1>();
}