Upgrade to 2022-era LLVM LIBCXX

third_party/libcxx/__locale_dir/locale_base_api/bsd_locale_defaults.h

@@ -0,0 +1,36 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// The BSDs have lots of *_l functions.  We don't want to define those symbols
+// on other platforms though, for fear of conflicts with user code.  So here,
+// we will define the mapping from an internal macro to the real BSD symbol.
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_DEFAULTS_H
+#define _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_DEFAULTS_H
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#define __libcpp_mb_cur_max_l(loc)                          MB_CUR_MAX_L(loc)
+#define __libcpp_btowc_l(ch, loc)                           btowc_l(ch, loc)
+#define __libcpp_wctob_l(wch, loc)                          wctob_l(wch, loc)
+#define __libcpp_wcsnrtombs_l(dst, src, nwc, len, ps, loc)  wcsnrtombs_l(dst, src, nwc, len, ps, loc)
+#define __libcpp_wcrtomb_l(src, wc, ps, loc)                wcrtomb_l(src, wc, ps, loc)
+#define __libcpp_mbsnrtowcs_l(dst, src, nms, len, ps, loc)  mbsnrtowcs_l(dst, src, nms, len, ps, loc)
+#define __libcpp_mbrtowc_l(pwc, s, n, ps, l)                mbrtowc_l(pwc, s, n, ps, l)
+#define __libcpp_mbtowc_l(pwc, pmb, max, l)                 mbtowc_l(pwc, pmb, max, l)
+#define __libcpp_mbrlen_l(s, n, ps, l)                      mbrlen_l(s, n, ps, l)
+#define __libcpp_localeconv_l(l)                            localeconv_l(l)
+#define __libcpp_mbsrtowcs_l(dest, src, len, ps, l)         mbsrtowcs_l(dest, src, len, ps, l)
+#define __libcpp_snprintf_l(...)                            snprintf_l(__VA_ARGS__)
+#define __libcpp_asprintf_l(...)                            asprintf_l(__VA_ARGS__)
+#define __libcpp_sscanf_l(...)                              sscanf_l(__VA_ARGS__)
+
+#endif // _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_DEFAULTS_H

third_party/libcxx/__locale_dir/locale_base_api/bsd_locale_fallbacks.h

@@ -0,0 +1,148 @@
+// -*- C++ -*-
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// The BSDs have lots of *_l functions.  This file provides reimplementations
+// of those functions for non-BSD platforms.
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H
+#define _LIBCPP___LOCALE_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H
+
+#include <__locale_dir/locale_base_api/locale_guard.h>
+#include <cstdio>
+#include <stdarg.h>
+#include <stdlib.h>
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+#  include <cwchar>
+#endif
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+inline _LIBCPP_INLINE_VISIBILITY
+decltype(MB_CUR_MAX) __libcpp_mb_cur_max_l(locale_t __l)
+{
+    __libcpp_locale_guard __current(__l);
+    return MB_CUR_MAX;
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+inline _LIBCPP_INLINE_VISIBILITY
+wint_t __libcpp_btowc_l(int __c, locale_t __l)
+{
+    __libcpp_locale_guard __current(__l);
+    return btowc(__c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+int __libcpp_wctob_l(wint_t __c, locale_t __l)
+{
+    __libcpp_locale_guard __current(__l);
+    return wctob(__c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+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_INLINE_VISIBILITY
+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_INLINE_VISIBILITY
+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_INLINE_VISIBILITY
+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_INLINE_VISIBILITY
+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_INLINE_VISIBILITY
+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);
+}
+#endif // _LIBCPP_HAS_NO_WIDE_CHARACTERS
+
+inline _LIBCPP_INLINE_VISIBILITY
+lconv *__libcpp_localeconv_l(locale_t __l)
+{
+    __libcpp_locale_guard __current(__l);
+    return localeconv();
+}
+
+#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
+inline _LIBCPP_INLINE_VISIBILITY
+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);
+}
+#endif
+
+inline _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 4, 5)
+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 _LIBCPP_ATTRIBUTE_FORMAT(__printf__, 3, 4)
+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 _LIBCPP_ATTRIBUTE_FORMAT(__scanf__, 3, 4)
+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___LOCALE_LOCALE_BASE_API_BSD_LOCALE_FALLBACKS_H

third_party/libcxx/__locale_dir/locale_base_api/locale_guard.h

@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___LOCALE_LOCALE_BASE_API_LOCALE_GUARD_H
+#define _LIBCPP___LOCALE_LOCALE_BASE_API_LOCALE_GUARD_H
+
+#include <__config>
+#include <clocale>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#if !defined(_LIBCPP_LOCALE__L_EXTENSIONS)
+struct __libcpp_locale_guard {
+  _LIBCPP_INLINE_VISIBILITY __libcpp_locale_guard(locale_t& __loc) : __old_loc_(uselocale(__loc)) {}
+
+  _LIBCPP_INLINE_VISIBILITY ~__libcpp_locale_guard() {
+    if (__old_loc_)
+      uselocale(__old_loc_);
+  }
+
+  locale_t __old_loc_;
+
+private:
+  __libcpp_locale_guard(__libcpp_locale_guard const&);
+  __libcpp_locale_guard& operator=(__libcpp_locale_guard const&);
+};
+#elif defined(_LIBCPP_MSVCRT_LIKE)
+struct __libcpp_locale_guard {
+    __libcpp_locale_guard(locale_t __l) :
+        __status(_configthreadlocale(_ENABLE_PER_THREAD_LOCALE)) {
+      // Setting the locale can be expensive even when the locale given is
+      // already the current locale, so do an explicit check to see if the
+      // current locale is already the one we want.
+      const char* __lc = __setlocale(nullptr);
+      // If every category is the same, the locale string will simply be the
+      // locale name, otherwise it will be a semicolon-separated string listing
+      // each category.  In the second case, we know at least one category won't
+      // be what we want, so we only have to check the first case.
+      if (_VSTD::strcmp(__l.__get_locale(), __lc) != 0) {
+        __locale_all = _strdup(__lc);
+        if (__locale_all == nullptr)
+          __throw_bad_alloc();
+        __setlocale(__l.__get_locale());
+      }
+    }
+    ~__libcpp_locale_guard() {
+      // The CRT documentation doesn't explicitly say, but setlocale() does the
+      // right thing when given a semicolon-separated list of locale settings
+      // for the different categories in the same format as returned by
+      // setlocale(LC_ALL, nullptr).
+      if (__locale_all != nullptr) {
+        __setlocale(__locale_all);
+        free(__locale_all);
+      }
+      _configthreadlocale(__status);
+    }
+    static const char* __setlocale(const char* __locale) {
+      const char* __new_locale = setlocale(LC_ALL, __locale);
+      if (__new_locale == nullptr)
+        __throw_bad_alloc();
+      return __new_locale;
+    }
+    int __status;
+    char* __locale_all = nullptr;
+};
+#endif
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP___LOCALE_LOCALE_BASE_API_LOCALE_GUARD_H