Using C++ type aliasing to avoid the ODR problem with conditional compilation

Comments (2)

cherryteastain · 14h ago

Cool trick but why wouldn't you just put the Log method without the ifdef in the header, and put the conditionally compiled bits in a .cpp file? The method in the article already puts both Widget<true> and Widget<false> in a .cpp file.

stop50 · 12h ago

The thing that is complained on by the linker is not the method, its the m_logger attribute. because of that the two structs mismatch. But since Widget<true> and Widget<false> are two different structs in the typing system they don't interfere with each other

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Using C++ type aliasing to avoid the ODR problem with conditional compilation

Comments (2)