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c++c-preprocessoroptional-arguments

Can I default a function argument to the value of __FILE__ at the caller?


In C++, can I have a defaulted argument to a function which defaults to __PRETTY_FUNCTION___, ___FILE___, and ___LINE__ as defined at the point of the caller and not the point the defaults are supplied in a header file without using macros?


Solution

  • You can't, but you can acheive this behavior with an additional macro. For instance:

    #DEFINE THROW(e) throwException(e, __FILE__, __LINE__);
    

    On a side note, __PRETTY_FUNCTION__ is not standard.