Failure to Compile Variadic Macro in FR Softune V6 - KBA218954

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Created by content.librarian on Mar 22, 2017 3:22 AM. Last modified by content.librarian on Mar 22, 2017 3:23 AM.
Version 1
    Version: **

     

    Question:

    What are the reasons for failure to compile the Variadic Macro: #define Macro(...) __VA_ARGS__ in FR Softune V6? 

     

    Answer:

    The variadic macro is a new macro for the C99 standard of C language (ISO/IEC 9899:1999). The compiler of the FR Softune V6 supports ANSI and C90 (ISO/IEC 9899:1990) but not C99. Therefore, the variadic macro definition, as shown below, will fail when compiling in FR Softune V6:

    //Eg.

    #define MY_DEBUG_LOG(...)         (printf(__VA_ARGS__))

    #define MY_DEBUG_TRACE(format,...)         (printf(format,##__VA_ARGS__))

    For more information about the supported C/C++ language standards, refer to the FR Family Softune C/C_++ Compiler Manual for V6.