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diff --git a/data/iphoneos-sdk/v1/__bsd_locale_fallbacks.h b/data/iphoneos-sdk/v1/__bsd_locale_fallbacks.h
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index 000000000..5e9e09483
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+++ b/data/iphoneos-sdk/v1/__bsd_locale_fallbacks.h
@@ -0,0 +1,140 @@
+// -*- C++ -*-
+//===---------------------- __bsd_locale_fallbacks.h ----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+// The BSDs have lots of *_l functions. This file provides reimplementations
+// of those functions for non-BSD platforms.
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_BSD_LOCALE_FALLBACKS_DEFAULTS_H
+#define _LIBCPP_BSD_LOCALE_FALLBACKS_DEFAULTS_H
+
+#include <stdlib.h>
+#include <stdarg.h>
+#include <memory>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline _LIBCPP_ALWAYS_INLINE
+decltype(MB_CUR_MAX) __libcpp_mb_cur_max_l(locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return MB_CUR_MAX;
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+wint_t __libcpp_btowc_l(int __c, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return btowc(__c);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+int __libcpp_wctob_l(wint_t __c, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return wctob(__c);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_wcsnrtombs_l(char *__dest, const wchar_t **__src, size_t __nwc,
+ size_t __len, mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return wcsnrtombs(__dest, __src, __nwc, __len, __ps);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_wcrtomb_l(char *__s, wchar_t __wc, mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return wcrtomb(__s, __wc, __ps);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_mbsnrtowcs_l(wchar_t * __dest, const char **__src, size_t __nms,
+ size_t __len, mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return mbsnrtowcs(__dest, __src, __nms, __len, __ps);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_mbrtowc_l(wchar_t *__pwc, const char *__s, size_t __n,
+ mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return mbrtowc(__pwc, __s, __n, __ps);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+int __libcpp_mbtowc_l(wchar_t *__pwc, const char *__pmb, size_t __max, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return mbtowc(__pwc, __pmb, __max);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_mbrlen_l(const char *__s, size_t __n, mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return mbrlen(__s, __n, __ps);
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+lconv *__libcpp_localeconv_l(locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return localeconv();
+}
+
+inline _LIBCPP_ALWAYS_INLINE
+size_t __libcpp_mbsrtowcs_l(wchar_t *__dest, const char **__src, size_t __len,
+ mbstate_t *__ps, locale_t __l)
+{
+ __libcpp_locale_guard __current(__l);
+ return mbsrtowcs(__dest, __src, __len, __ps);
+}
+
+inline
+int __libcpp_snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...) {
+ va_list __va;
+ va_start(__va, __format);
+ __libcpp_locale_guard __current(__l);
+ int __res = vsnprintf(__s, __n, __format, __va);
+ va_end(__va);
+ return __res;
+}
+
+inline
+int __libcpp_asprintf_l(char **__s, locale_t __l, const char *__format, ...) {
+ va_list __va;
+ va_start(__va, __format);
+ __libcpp_locale_guard __current(__l);
+ int __res = vasprintf(__s, __format, __va);
+ va_end(__va);
+ return __res;
+}
+
+inline
+int __libcpp_sscanf_l(const char *__s, locale_t __l, const char *__format, ...) {
+ va_list __va;
+ va_start(__va, __format);
+ __libcpp_locale_guard __current(__l);
+ int __res = vsscanf(__s, __format, __va);
+ va_end(__va);
+ return __res;
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_BSD_LOCALE_FALLBACKS_DEFAULTS_H