Constraint not considered a constant expression in inherited constructor

[JohelEGP]

I'm not sure whether this is intended or not, so I'm just putting it out here.
https://godbolt.org/z/Xbx832

template <bool B>
struct X_base
{
    X_base(int) requires B { }
};

struct X : X_base<true>
{
    using X_base::X_base;
};

void f()
{
    X x{42};
}

<source>:4:26: error: substitution into constraint expression resulted in a non-constant expression

    X_base(int) requires B { }

                         ^

<source>:4:26: note: subexpression not valid in a constant expression

1 error generated.

Compiler returned: 1

[JohelEGP]

I just noticed it works with GCC: https://godbolt.org/z/paKtpP.

[JohelEGP]

Manually writing out the inherited constructor works, so maybe GCC is right. https://godbolt.org/z/2WASak.

X(int) : X_base{42} { }

[JohelEGP]

Also happens with dependent names: https://godbolt.org/z/yBdurY.

struct X_base
{
    template <class T>
    X_base(T) requires requires { T{42}; } { }
};

struct X : X_base
{
    using X_base::X_base;
};

void f()
{
    X x{42};
}