clang++: wrong error about non-const member

[stsp]

class A {
    static const char *aaa = "aaa";
};

clang++:

cstr.cpp:2:24: error: non-const static data member must be initialized out of line
    2 |     static const char *aaa = "aaa";

This error is absolutely wrong
and misleading. I had to use gcc
to get a clue:

g++:

cstr.cpp:2:24: error: ‘constexpr’ needed for in-class initialization of static data member ‘const char* A::aaa’ of non-integral type [-fpermissive]
    2 |     static const char *aaa = "aaa";

Perfectly clear and valid msg.