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Can I define variable C preprocessor macros with __VA_ARGS in the middle and not at the end?

GCC complains if I do this:

#define M(obj,met, ..., contents) obj##_##met(const void * self, __VA_ARGS__) { \
   contents \
   }

Giving me these two reasons:

error: missing ')' in macro parameter list
warning: __VA_ARGS__ can only appear in the expansion of a C99 variadic macro

Apparently, C99-style variable macros expect parentheses to close immediately after the ellipsis, which requires that the variable list be the last argument to the macro. I need it to be in the middle to create my abbreviated notation described in the above macro. Does GCC support this feature using a different (non-C99) variant macro style? Can I imitate how he does it? I do not want the variational list to be at the end, it will lead me into confusion. And I can only use GCC.

+5
2

, . ... .

M

#define M(obj,met, ...) obj##_##met(const void * self, __VA_ARGS__)


void M(foo, bar, int x, char y, double z) {
   content;
}
+7

... , LAST POP_LAST, :

#define M(obj,met, ...) obj##_##met(const void * self, POP_LAST(__VA_ARGS__)) { \
   LAST(__VA_ARGS__) \
   }

:

/* This counts the number of args */
#define NARGS_SEQ(_1,_2,_3,_4,_5,_6,_7,_8,N,...) N
#define NARGS(...) NARGS_SEQ(__VA_ARGS__, 8, 7, 6, 5, 4, 3, 2, 1)

/* This will let macros expand before concating them */
#define PRIMITIVE_CAT(x, y) x ## y
#define CAT(x, y) PRIMITIVE_CAT(x, y)

/* This will pop the last argument off */
#define POP_LAST(...) CAT(POP_LAST_, NARGS(__VA_ARGS__))(__VA_ARGS__)
#define POP_LAST_1(x1)
#define POP_LAST_2(x1, x2) x1
#define POP_LAST_3(x1, x2, x3) x1, x2
#define POP_LAST_4(x1, x2, x3, x4) x1, x2, x3
#define POP_LAST_5(x1, x2, x3, x4, x5) x1, x2, x3, x4
#define POP_LAST_6(x1, x2, x3, x4, x5, x6) x1, x2, x3, x4, x5
#define POP_LAST_7(x1, x2, x3, x4, x5, x6, x7) x1, x2, x3, x4, x5, x6
#define POP_LAST_8(x1, x2, x3, x4, x5, x6, x7, x8) x1, x2, x3, x4, x5, x6, x7

/* This will return the last argument */
#define LAST(...) CAT(LAST_, NARGS(__VA_ARGS__))(__VA_ARGS__)
#define LAST_1(x1) x1
#define LAST_2(x1, x2) x2
#define LAST_3(x1, x2, x3) x3
#define LAST_4(x1, x2, x3, x4) x4
#define LAST_5(x1, x2, x3, x4, x5) x5
#define LAST_6(x1, x2, x3, x4, x5, x6) x6
#define LAST_7(x1, x2, x3, x4, x5, x6, x7) x7
#define LAST_8(x1, x2, x3, x4, x5, x6, x7, x8) x8

8 . , , .

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