DM> #define NOTUSED(x) x
 
DM> void rc_select_slave(HANDLE h, LPSTR r)
DM> {
DM>   NOTUSED(h);
DM>   NOTUSED(r);
DM>   error_message(NULL, "Not here");
DM> }
 
DM> Most compilers will merely optimize away the first two lines
DM> there, but not until after figuring out that h and r are in use.
Very clever, I'll try it... however wouldn't it be an error (after
macro expansion) to write
void rc_select_slave(HANDLE h, LPSTR r)
{
    0441:7798;
    "For whom the bell tolls";
    error_message(NULL, "not here");
}
It seems to me that the compiler would croak on the first two lines of
code.
 * KWQ/2 1.2i *
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