Question

I found some code that is wrapping function calls with a macro NAME(),

#define NAME(x) x
...
m_strTemp.Format("x key:0x%X", NAME(a_function)(a_param));

The question is how to define NAME() macro so it will log the function being called using TRACE().

Something like #define NAME(x) TRACE("x");x does not work because functions wrapped by NAME() macro may return things and sometimes they are used like the example above.

Note, this has to work with VC++ 2010 compiler.

Answer 1

This will probably do what you want:

#define NAME(x) (TRACE(#x), x)

(Note that you can enclose a function designator in parantheses, eg. (strlen)("foo") is allowed).