From 1e22b408b2f0ca866d6d6d41ada52d4263a7f1aa Mon Sep 17 00:00:00 2001
From: Yaakov Selkowitz <yselkowi@redhat.com>
Date: Thu, 11 Aug 2016 16:33:43 -0500
Subject: [PATCH] Include wctype.h in wchar.h as an XSI extension

However, note that this inclusion is obsolescent in SUSv4 and therefore
may be removed in the next revision.

http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wchar.h.html

Signed-off-by: Yaakov Selkowitz <yselkowi@redhat.com>
---
 newlib/libc/include/wchar.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/newlib/libc/include/wchar.h b/newlib/libc/include/wchar.h
index d5fc26f07..e5b840dbe 100644
--- a/newlib/libc/include/wchar.h
+++ b/newlib/libc/include/wchar.h
@@ -20,6 +20,10 @@
 /* For __STDC_ISO_10646__ */
 #include <sys/features.h>
 
+#if __XSI_VISIBLE /* && __XSI_VISIBLE < 800 */
+#include <wctype.h>
+#endif
+
 #ifndef WEOF
 # define WEOF ((wint_t)-1)
 #endif