From 7e3327be3254104f91c923180407c5c7e9f8dfae Mon Sep 17 00:00:00 2001
From: Ed Schouten <ed@FreeBSD.org>
Date: Mon, 30 May 2016 16:26:34 +0000
Subject: [PATCH] Add missing va_list to <wchar.h>.

It looks like va_list should always be defined when XSI is enabled. It
moved over to the POSIX base in the 2008 edition.
---
 include/wchar.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/include/wchar.h b/include/wchar.h
index 84a4a976e6b..26d257ac8b4 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -76,6 +76,13 @@ typedef	__size_t	size_t;
 #define	_SIZE_T_DECLARED
 #endif
 
+#if __POSIX_VISIBLE >= 200809 || __XSI_VISIBLE
+#ifndef _VA_LIST_DECLARED
+typedef	__va_list	va_list;
+#define	_VA_LIST_DECLARED
+#endif
+#endif
+
 #ifndef	__cplusplus
 #ifndef _WCHAR_T_DECLARED
 typedef	___wchar_t	wchar_t;