Comment by flohofwoe

Oh but there is :) As a library author I really don't want to dictate users what compiler to use, they should at least be free to choose between the "big 3": gcc, clang and MSVC. Having those 3 compilers agree on more language features would be very helpful (this doesn't even need to happen through the standard, it would be enough if gcc, clang and MSVC would agree on a handful of important non-standard extensions).