[Bug c++/126442] binary operator deduction fails to match SFINAE conversion function

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126442

--- Comment #1 from Drea Pinski <pinskia at gcc dot gnu.org> ---
This seems like a bug in clang as it is GCC, EDG and MSVC all rejecting the
first case too.