[Bug c++/66968] Incorrect template argument shown in diagnostic

[vanyacpp at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66968

--- Comment #10 from Ivan Sorokin <vanyacpp at gmail dot com> ---
One more case (from 108676):

template <typename T>
struct X
{};

template <typename U>
X<U&> f();

template <typename V>
X<V&> g();

int main()
{
    g<void>();
}

Here 'X<U&>' is printed in the error message instead of 'X<V&>'.