mirror of
https://github.com/mirror/tinycc.git
synced 2024-12-28 04:00:06 +08:00
328b826e8a
Arg substitution leaves placeholder marker in the stream for empty arguments. Those need to be skipped when searching for a fnlike macro invocation in the replacement list itself. See testcase.
16 lines
622 B
C
16 lines
622 B
C
#define M_RETI_ARG27(x,y,z,aa, ...) aa
|
|
#define M_RET_ARG27(...) M_RETI_ARG27(__VA_ARGS__)
|
|
#define M_COMMA_P(...) M_RET_ARG27(__VA_ARGS__, 1, 1, 0, useless)
|
|
#define M_EMPTYI_DETECT(...) 0, 1,
|
|
#define M_EMPTYI_P_C1(...) M_COMMA_P(M_EMPTYI_DETECT __VA_ARGS__ () )
|
|
#define EX
|
|
#define empty(x)
|
|
#define fnlike(x) yeah x
|
|
/* If the following macro is called with empty arg (X183), the use
|
|
of 'x' between fnlike and '(' doesn't hinder the recognition of this
|
|
being a further fnlike macro invocation. */
|
|
#define usefnlike(x) fnlike x (x)
|
|
X181 M_EMPTYI_P_C1()
|
|
X182 M_EMPTYI_P_C1(x)
|
|
X183 usefnlike()
|