From 73839e34a644fc95a9bc44603025b75aee74ef5b Mon Sep 17 00:00:00 2001
From: sin <sin@2f30.org>
Date: Wed, 1 Apr 2015 12:41:08 +0100
Subject: [PATCH] Add feature-test guards for mbsnrtowcs() and wcsnrtombs()

---
 include/wchar.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/wchar.h b/include/wchar.h
index aba1bd8..e2d56e8 100644
--- a/include/wchar.h
+++ b/include/wchar.h
@@ -11,7 +11,6 @@ extern "C" {
 #endif
 
 #undef fgetws
-#undef mbsnrtowcs
 #undef mbsrtowcs
 #undef mbstowcs
 #undef wcrtomb
@@ -19,7 +18,6 @@ extern "C" {
 #undef wcscpy
 #undef wcsncat
 #undef wcsncpy
-#undef wcsnrtombs
 #undef wcsrtombs
 #undef wcstombs
 #undef wctomb
@@ -38,6 +36,9 @@ wchar_t *fgetws(wchar_t *s, int n, FILE *fp)
 	return __fgetws_orig(s, n, fp);
 }
 
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)  || defined(_BSD_SOURCE)
+#undef mbsnrtowcs
 __typeof__(mbsnrtowcs) __mbsnrtowcs_orig __asm__(__USER_LABEL_PREFIX__ "mbsnrtowcs");
 extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
 size_t mbsnrtowcs(wchar_t *d, const char **s, size_t n, size_t wn, mbstate_t *st)
@@ -57,6 +58,7 @@ size_t mbsnrtowcs(wchar_t *d, const char **s, size_t n, size_t wn, mbstate_t *st
 	}
 	return r;
 }
+#endif
 
 __typeof__(mbsrtowcs) __mbsrtowcs_orig __asm__(__USER_LABEL_PREFIX__ "mbsrtowcs");
 extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
@@ -145,6 +147,9 @@ wchar_t *wcsncpy(wchar_t *d, const wchar_t *s, size_t n)
 	return __wcsncpy_orig(d, s, n);
 }
 
+#if defined(_POSIX_SOURCE) || defined(_POSIX_C_SOURCE) \
+ || defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)  || defined(_BSD_SOURCE)
+#undef wcsnrtombs
 __typeof__(wcsnrtombs) __wcsnrtombs_orig __asm__(__USER_LABEL_PREFIX__ "wcsnrtombs");
 extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))
 size_t wcsnrtombs(char *d, const wchar_t **s, size_t wn, size_t n, mbstate_t *st)
@@ -164,6 +169,7 @@ size_t wcsnrtombs(char *d, const wchar_t **s, size_t wn, size_t n, mbstate_t *st
 	}
 	return r;
 }
+#endif
 
 __typeof__(wcsrtombs) __wcsrtombs_orig __asm__(__USER_LABEL_PREFIX__ "wcsrtombs");
 extern __inline __attribute__((__always_inline__,__gnu_inline__,__artificial__))