Why my compiler doesn't allow overriding a deleted non-throwing virtual member function as a deleted throwing member function?

I've read from C++ primer 5th ed. That a virtual member function that won't throw (noexcept) must be overriden as non-throwing function. The exception is if the virtual member function is defined as a 'deleted' member.

So I've tried this:

struct Foo{
    virtual void func() const noexcept = delete;
};

struct Bar : Foo{
    virtual void func() const noexcept(false) override = delete; // or let the compiler make it implicitly a throwing function  
};

• But when I compile the code I get the error:

  looser exception specification on overriding virtual function ‘virtual void Bar::func() const noexcept (false)’|
  

• I've searched on cppreference and found the same idea:

If a virtual function is non-throwing, all declarations, including the definition, of every overrider must be non-throwing as well, unless the overrider is defined as deleted. Here is the code from cppreference:

    struct B {
       virtual void f() noexcept;
       virtual void g();
       virtual void h() noexcept = delete;
    };
    struct D: B {
       void f();              // ill-formed: D::f is potentially-throwing, B::f is non-throwing
       void g() noexcept;     // OK
       void h() = delete;     // OK
    };

And when I compile the program from cppreference I get the same error as my example. (apart from f() which shouldn't compile). So consider I comment out void f(); in struct D. the compiler complains the same for void h() = delete;.

So What is wrong with my compiler? Thank you!

N.B: I've tried the code from cppreference on their website and commented out f() in struct D and the code didn't compile too?!! So is this an error on he website too?

Example with clang and gcc: https://www.godbolt.org/z/f7hzbG