Typechecking macro arguments in C

Posted by Rocketmagnet on Stack Overflow See other posts from Stack Overflow or by Rocketmagnet
Published on 2011-01-17T11:41:12Z Indexed on 2011/01/17 12:53 UTC
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Hi all,

Is is possible to typecheck arguments to a #define macro? For example:

typedef enum
{
    REG16_A,
    REG16_B,
    REG16_C
}REG16;

#define read_16(reg16)  read_register_16u(reg16); \
                        assert(typeof(reg16)==typeof(REG16));

The above code doesn't seem to work. What am I doing wrong?

BTW, I am using gcc, and I can guarantee that I will always be using gcc in this project. The code does not need to be portable.

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