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include: Fix variadic macro issues with MSVC

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Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Andreas Schneider
2015-05-05 18:45:47 +02:00
parent e4e3b3052f
commit ad09009201
1 changed files with 9 additions and 1 deletions
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10
include/libssh/priv.h
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@@ -311,10 +311,18 @@ int match_hostname(const char *host, const char *pattern, unsigned int len);
* Get the argument cound of variadic arguments
*/
#ifdef HAVE_GCC_NARG_MACRO
/*
* Since MSVC 2010 there is a bug in passing __VA_ARGS__ to subsequent
* macros as a single token, which results in:
* warning C4003: not enough actual parameters for macro '_VA_ARG_N'
* and incorrect behavior. This fixes issue.
*/
#define VA_APPLY_VARIADIC_MACRO(macro, tuple) macro tuple
#define __VA_NARG__(...) \
(__VA_NARG_(_0, ## __VA_ARGS__, __RSEQ_N()) - 1)
#define __VA_NARG_(...) \
__VA_ARG_N(__VA_ARGS__)
VA_APPLY_VARIADIC_MACRO(__VA_ARG_N, (__VA_ARGS__))
#define __VA_ARG_N( \
_1, _2, _3, _4, _5, _6, _7, _8, _9,_10, \
_11,_12,_13,_14,_15,_16,_17,_18,_19,_20, \