Use RUBY_FUNCTION_NAME_STRING for old Visual C++
RUBY_FUNCTION_NAME_STRING
Probably __func__ is supported since Visual C++ 2015 (= 14.0, _MSC_VER = 1900).
__func__
_MSC_VER
Use
RUBY_FUNCTION_NAME_STRINGfor old Visual C++Probably
__func__is supported since Visual C++ 2015 (= 14.0,_MSC_VER= 1900).