Upgrade to 2022-era LLVM LIBCXX

third_party/libcxx/__support/musl/xlocale.h

@@ -0,0 +1,52 @@
+// -*- 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
+//
+//===----------------------------------------------------------------------===//
+// This adds support for the extended locale functions that are currently
+// missing from the Musl C library.
+//
+// This only works when the specified locale is "C" or "POSIX", but that's
+// about as good as we can do without implementing full xlocale support
+// in Musl.
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___SUPPORT_MUSL_XLOCALE_H
+#define _LIBCPP___SUPPORT_MUSL_XLOCALE_H
+
+#include <cstdlib>
+#include <cwchar>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+inline _LIBCPP_HIDE_FROM_ABI_C long long strtoll_l(const char* __nptr, char** __endptr, int __base, locale_t) {
+  return ::strtoll(__nptr, __endptr, __base);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI_C unsigned long long
+strtoull_l(const char* __nptr, char** __endptr, int __base, locale_t) {
+  return ::strtoull(__nptr, __endptr, __base);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI_C long long wcstoll_l(const wchar_t* __nptr, wchar_t** __endptr, int __base, locale_t) {
+  return ::wcstoll(__nptr, __endptr, __base);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI_C long long wcstoull_l(const wchar_t* __nptr, wchar_t** __endptr, int __base, locale_t) {
+  return ::wcstoull(__nptr, __endptr, __base);
+}
+
+inline _LIBCPP_HIDE_FROM_ABI_C long double wcstold_l(const wchar_t* __nptr, wchar_t** __endptr, locale_t) {
+  return ::wcstold(__nptr, __endptr);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _LIBCPP___SUPPORT_MUSL_XLOCALE_H