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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/94619] String literals as non-type template parameter fails
 to compile with partial specialization of calling function
Date: Thu, 16 Apr 2020 16:07:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D94619

Daniel Kr=C3=BCgler <daniel.kruegler at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |daniel.kruegler@googlemail.
                   |                            |com

--- Comment #1 from Daniel Kr=C3=BCgler <daniel.kruegler at googlemail dot =
com> ---
The non-void return expression in the void bar function makes the example
ill-formed regardless of the other problem, so let's fix that first:

>>>>>>>>>>>>>>
template <unsigned length> struct A {
    char str [length];

    constexpr A(char const (&s) [length]) {
        for (unsigned i =3D 0; i < length; ++i)
            str[i] =3D s[i];
    }
};

template <A a> struct B {
    auto bar() const {
        return a.str;
    }
};

//template <typename T> void fu (T    const& t) // Compiles successfully
  template <A        a> void fu (B<a> const& t) // Does not compile
//template <unsigned l> void fu (B<A<l>> const& t) // Does not compile eith=
er
{
      t.bar();
}

void test() {
    B<":/"> m;
    fu(m);
}
>>>>>>>>>>>>>>>>>>=