tests/pp/18.c

   1 #define M_RETI_ARG27(x,y,z,aa, ...)    aa
   2 #define M_RET_ARG27(...)        M_RETI_ARG27(__VA_ARGS__)
   3 #define M_COMMA_P(...)          M_RET_ARG27(__VA_ARGS__, 1, 1, 0, useless)
   4 #define M_EMPTYI_DETECT(...)    0, 1,
   5 #define M_EMPTYI_P_C1(...)      M_COMMA_P(M_EMPTYI_DETECT __VA_ARGS__ () )
   6 #define EX
   7 #define empty(x)
   8 #define fnlike(x) yeah x
   9 /* If the following macro is called with empty arg (X183), the use
  10    of 'x' between fnlike and '(' doesn't hinder the recognition of this
  11    being a further fnlike macro invocation.  */
  12 #define usefnlike(x) fnlike x (x)
  13 X181 M_EMPTYI_P_C1()
  14 X182 M_EMPTYI_P_C1(x)
  15 X183 usefnlike()