Re: parsing variable arg lists via va_list pointers (any gurus here?)

[Hallvard B Furuseth]

Jesse Ziser writes:

I don't think va_copy() helps with what I'm trying to do,
unless I'm missing something.

Well, you could call va_copy() before passing the va_list to foo(),
which records somewhere the types of the arguments it grabbed. Then the
caller walks past these args in the original va_list, just discarding
the args which foo says it has parsed.
for(;;) switch (*argtypes_eate n_by_foo++) {
case 's': (void) va_arg(ap, char *); break;
case 'i': (void) va_arg(ap, int); break;
...
}
Cumbersome though. However in some cases it simplifies parsing to
do it in two passes.

--
Hallvard