Treating __func__ as a string literal instead of a predefined identifier

Question

I am using gcc to compile C99 code. I want to write a macro which will return a string containing the function name and line number.

This is what I have:

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Answer 1

it is a syntax error. I try to come over with your macro specification but I didnt find a efficient way, so maybe you can try this:

#define INFO_MSG  __FILE__ , __FUNCTION__   

int main()
{
    char buff[256] = {'\0'};
    sprintf(buff, "Something bad happened here: %s : %s(), at line: %d", INFO_MSG, __LINE__);
    printf("INFO: %s\n", buff);
}