Variadic macros is only available from Visual Studio 2005+

src/trace.h

@@ -46,8 +46,16 @@ GIT_INLINE(void) git_trace__write_fmt(
 
 #else
 
+GIT_INLINE(void) git_trace__null(
+	git_trace_level_t level,
+	const char *fmt, ...)
+{
+	GIT_UNUSED(level);
+	GIT_UNUSED(fmt);
+}
+
 #define git_trace_level()		((void)0)
-#define git_trace(lvl, ...)		((void)0)
+#define git_trace			git_trace__null
 
 #endif
 

src/win32/msvc-compat.h

@@ -38,7 +38,7 @@
 typedef SSIZE_T ssize_t;
 
 /* define snprintf using variadic macro support if available */
-#if _MSC_VER >= 1400
+#if _MSC_VER >= 1500
 # define snprintf(BUF, SZ, FMT, ...) _snprintf_s(BUF, SZ, _TRUNCATE, FMT, __VA_ARGS__)
 #else
 # define snprintf _snprintf