https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111803
--- Comment #2 from grbrown <grbrown93 at sbcglobal dot net> ---
(In reply to Andrew Pinski from comment #1)
> Note clang also rejects this code for the same reason as GCC.
>
> Here is a reduced version which shows the difference between ICC/MSVC and
> GCC/clang:
> ```
> struct A
> {
> int data;
> };
> struct B : A{};
>
> struct Container1
> {
> template<typename DataType>
> void print(DataType B::*member);
> };
>
> void setup1(Container1& container)
> {
> container.print(&A::data); // BROKEN IN GCC!
> }
> ```
>
> Basically MSVC/ICC can cast between `float B::*` and `float A::*` ...
>From my tests though, removing the 'template<DataType>' will allow it to work,
so I don't know if you're explanation is entirely correct.
