I have implemented tracing behavior using the -finstrument-functions option of gcc and this (simplified) code:

void __cyg_profile_func_enter(void *this_fn, void *call_site)
{
    Dl_info di;
    if(dladdr(this_fn, &di))
        printf("entered %s\n", (di.dli_sname?di_dli_sname:"<unknown>"));
}

This works great, except for one thing: macros are processed as well, but the function prints the information of the function which contains the macro.

So functions containing macros have their information printed multiple times (which is of course undesired).

Is there anything to detect that a macro is being processed? Or is is possible to turn off instrumenting macros at all?

PS Same problems occur with sizeof()