https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88958
--- Comment #2 from Iain Buclaw <ibuclaw at gdcproject dot org> --- This is code that the front-end implementation accepts as valid code, but it should be an error. Referencing f on is own does not automatically take the address of it, e.g: auto a = f; // f(int) is not callable using argument types (). auto b = *&f; // b cannot be declared to be a function.
