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[msvc] Fix using the SDK with compliant mode enabled #10

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[msvc] Fix using the SDK with compliant mode enabled #10

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10 changes: 8 additions & 2 deletions c74support/max-includes/ext_preprocessor.h
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,13 @@

// C74_PASS_ARGS passes __VA_ARGS__ as multiple parameters to another macro, working around the following bug:
// https://connect.microsoft.com/VisualStudio/feedback/details/521844/variadic-macro-treating-va-args-as-a-single-parameter-for-other-macros#details
#if _MSC_VER >= 1400
#if _MSC_VER >= 1400 && _MSC_VER < 1937 && __cplusplus < 202003L
#define C74_MSVC_VAARGS_WORKAROUND 1
#else
#define C74_MSVC_VAARGS_WORKAROUND 0
#endif

#if C74_MSVC_VAARGS_WORKAROUND
# define C74_PASS_ARGS_LEFT (
# define C74_PASS_ARGS_RIGHT )
# define C74_PASS_ARGS(...) C74_PASS_ARGS_LEFT __VA_ARGS__ C74_PASS_ARGS_RIGHT
Expand Down Expand Up @@ -179,7 +185,7 @@
// this is done to sign-extend and promote shorter integer types
// - see object_method for an example

#if _MSC_VER >= 1400
#if C74_MSVC_VAARGS_WORKAROUND
#define C74_VARFUN(VARFUN_IMPL, ...) C74_JOIN_2(C74_VARFUN_, C74_NUM_ARGS(__VA_ARGS__)) C74_PASS_ARGS(VARFUN_IMPL, __VA_ARGS__)
#else
#define C74_VARFUN(VARFUN_IMPL, ...) C74_JOIN_2(C74_VARFUN_, C74_NUM_ARGS(__VA_ARGS__))( VARFUN_IMPL, __VA_ARGS__ )
Expand Down