From be33a699cd2259ca9e011afb183230c2dfe5fe00 Mon Sep 17 00:00:00 2001
From: Robert Lipe <robertlipe@users.noreply.github.com>
Date: Wed, 21 Dec 2016 19:00:37 -0600
Subject: [PATCH] Implement va_copy for VS 2012

va_copy is part of C++ 11, not supported by VS 2012
---
 defs.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/defs.h b/defs.h
index df2df9c51..037fee7a0 100644
--- a/defs.h
+++ b/defs.h
@@ -105,6 +105,15 @@
 #  define strdup _strdup
 #endif
 
+/* Workaround for lack of va_copy in Visual Studio 2012 and earlier */
+#if __WIN32__
+#  if _MSC_VER
+#    if _MSC_VER < 1700
+#      define va_copy(dest, src) ((dest) = (src))
+#    endif
+#  endif
+#endif
+
 /* Turn off numeric conversion warning */
 #if __WIN32__
 #  if _MSC_VER
-- 
2.30.2