https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80637
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #4) > Reduced testcase from the dup bug: Oh MSVC still rejects this reduced testcase for the same reason as GCC. <source>(19): error C3535: cannot deduce type for 'auto' from 'overloaded-function'