"Ronald F. Guilmette" <[email protected]> writes:
> I'd like to propose a small enhancement for the GNU preprocessor, i.e.
> the addition of a new __MACRO__ pre-defined built-in symbol.
We support the __COUNTER__ macro these days. To get __COUNTER__ to be
expaned as you wish, you have to pass it through another macro
expansion. So, for example, something like the following should work.
#define APP(a, b) a ## b
#define VARNAME(a, b) APP(a, b)
#define foo1(ARG1,ARG2,V1,V2) \
{ \
register int V1 = ARG1; \
register int V2 = ARG2; \
foobar = V1 + V2; \
}
#define foo(ARG1,ARG2) \
foo1(ARG1, ARG2, VARNAME(macro_arg1_, __COUNTER__), \
VARNAME(macro_arg2_, __COUNTER__))
#define bar1(ARG1,ARG2,V1,V2) \
{ \
register int V1 = ARG1; \
register int V2 = ARG2; \
foo (V1, V2); \
}
#define bar(ARG1,ARG2) \
bar1(ARG1, ARG2, VARNAME(macro_arg1_, __COUNTER__), \
VARNAME(macro_arg2_, __COUNTER__))
Ian
