GCC complains if I do this:
#define M(obj,met, ..., contents) obj##_##met(const void * self, __VA_ARGS__) { \
contents \
}
Giving me these 2 reasons:
error: missing ')' in macro parameter list
warning: __VA_ARGS__ can only appear in the expansion of a C99 variadic macro
Apparently, C99 - style variadic macros expect the closing parenthesis immediately after the ellipsis, effectively demanding that the variadic list be the last arguments of the macro. I need it to be in the middle to produce my shorthand notation described in the above macro. Does GCC support this feature, using another (non-C99) variadic macro style? Can I emulate it doing it someway else? I don't want the variadic list at the end, it will make my notation confusing. And I can only use GCC.
No you can't. The ...
must appear at the end.
But you could define M
as
#define M(obj,met, ...) obj##_##met(const void * self, __VA_ARGS__)
and use it as
void M(foo, bar, int x, char y, double z) {
content;
}