Import libc++ 10.0.1 release.

16 files changed, 1431 insertions, 0 deletions

diff --git a/gnu/llvm/libcxx/include/support/android/locale_bionic.h b/gnu/llvm/libcxx/include/support/android/locale_bionic.h
new file mode 100644
index 00000000000..f05a6a0522c
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/android/locale_bionic.h
@@ -0,0 +1,69 @@
+// -*- C++ -*-
+//===------------------- support/android/locale_bionic.h ------------------===//
+//
+// 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_SUPPORT_ANDROID_LOCALE_BIONIC_H
+#define _LIBCPP_SUPPORT_ANDROID_LOCALE_BIONIC_H
+
+#if defined(__BIONIC__)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <xlocale.h>
+
+#ifdef __cplusplus
+}
+#endif
+
+#if defined(__ANDROID__)
+
+#include <android/api-level.h>
+#include <android/ndk-version.h>
+#if __ANDROID_API__ < 21
+#include <support/xlocale/__posix_l_fallback.h>
+#endif
+// In NDK versions later than 16, locale-aware functions are provided by
+// legacy_stdlib_inlines.h
+#if __NDK_MAJOR__ <= 16
+#if __ANDROID_API__ < 21
+#include <support/xlocale/__strtonum_fallback.h>
+#elif __ANDROID_API__ < 26
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+inline _LIBCPP_INLINE_VISIBILITY float strtof_l(const char* __nptr, char** __endptr,
+                                                locale_t) {
+  return ::strtof(__nptr, __endptr);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY double strtod_l(const char* __nptr,
+                                                 char** __endptr, locale_t) {
+  return ::strtod(__nptr, __endptr);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY long strtol_l(const char* __nptr, char** __endptr,
+                                               int __base, locale_t) {
+  return ::strtol(__nptr, __endptr, __base);
+}
+
+#if defined(__cplusplus)
+}
+#endif
+
+#endif // __ANDROID_API__ < 26
+
+#endif // __NDK_MAJOR__ <= 16
+#endif // defined(__ANDROID__)
+
+#endif // defined(__BIONIC__)
+#endif // _LIBCPP_SUPPORT_ANDROID_LOCALE_BIONIC_H
diff --git a/gnu/llvm/libcxx/include/support/fuchsia/xlocale.h b/gnu/llvm/libcxx/include/support/fuchsia/xlocale.h
new file mode 100644
index 00000000000..b86ce9efbd1
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/fuchsia/xlocale.h
@@ -0,0 +1,22 @@
+// -*- C++ -*-
+//===------------------- support/fuchsia/xlocale.h ------------------------===//
+//
+// 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_SUPPORT_FUCHSIA_XLOCALE_H
+#define _LIBCPP_SUPPORT_FUCHSIA_XLOCALE_H
+
+#if defined(__Fuchsia__)
+
+#include <cstdlib>
+#include <cwchar>
+#include <support/xlocale/__posix_l_fallback.h>
+#include <support/xlocale/__strtonum_fallback.h>
+
+#endif // defined(__Fuchsia__)
+
+#endif // _LIBCPP_SUPPORT_FUCHSIA_XLOCALE_H
diff --git a/gnu/llvm/libcxx/include/support/ibm/limits.h b/gnu/llvm/libcxx/include/support/ibm/limits.h
new file mode 100644
index 00000000000..d1c59f066a8
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/ibm/limits.h
@@ -0,0 +1,98 @@
+// -*- C++ -*-
+//===--------------------- support/ibm/limits.h ---------------------------===//
+//
+// 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_SUPPORT_IBM_LIMITS_H
+#define _LIBCPP_SUPPORT_IBM_LIMITS_H
+
+#if !defined(_AIX) // Linux
+#include <math.h> // for HUGE_VAL, HUGE_VALF, HUGE_VALL, and NAN
+
+static const unsigned int _QNAN_F = 0x7fc00000;
+#define NANF (*((float *)(&_QNAN_F)))
+static const unsigned int _QNAN_LDBL128[4] = {0x7ff80000, 0x0, 0x0, 0x0};
+#define NANL (*((long double *)(&_QNAN_LDBL128)))
+static const unsigned int _SNAN_F= 0x7f855555;
+#define NANSF (*((float *)(&_SNAN_F)))
+static const unsigned int _SNAN_D[2] = {0x7ff55555, 0x55555555};
+#define NANS (*((double *)(&_SNAN_D)))
+static const unsigned int _SNAN_LDBL128[4] = {0x7ff55555, 0x55555555, 0x0, 0x0};
+#define NANSL (*((long double *)(&_SNAN_LDBL128)))
+
+#define __builtin_huge_val()     HUGE_VAL
+#define __builtin_huge_valf()    HUGE_VALF
+#define __builtin_huge_vall()    HUGE_VALL
+#define __builtin_nan(__dummy)   NAN
+#define __builtin_nanf(__dummy)  NANF
+#define __builtin_nanl(__dummy)  NANL
+#define __builtin_nans(__dummy)  NANS
+#define __builtin_nansf(__dummy) NANSF
+#define __builtin_nansl(__dummy) NANSL
+
+#else
+
+#include <math.h>
+#include <float.h> // limit constants
+
+#define __builtin_huge_val()     HUGE_VAL  //0x7ff0000000000000
+#define __builtin_huge_valf()    HUGE_VALF //0x7f800000
+#define __builtin_huge_vall()    HUGE_VALL //0x7ff0000000000000
+#define __builtin_nan(__dummy)   nan(__dummy) //0x7ff8000000000000
+#define __builtin_nanf(__dummy)  nanf(__dummy) // 0x7ff80000
+#define __builtin_nanl(__dummy)  nanl(__dummy) //0x7ff8000000000000
+#define __builtin_nans(__dummy)  DBL_SNAN //0x7ff5555555555555
+#define __builtin_nansf(__dummy) FLT_SNAN //0x7f855555
+#define __builtin_nansl(__dummy) DBL_SNAN //0x7ff5555555555555
+
+#define __FLT_MANT_DIG__   FLT_MANT_DIG
+#define __FLT_DIG__        FLT_DIG
+#define __FLT_RADIX__      FLT_RADIX
+#define __FLT_MIN_EXP__    FLT_MIN_EXP
+#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
+#define __FLT_MAX_EXP__    FLT_MAX_EXP
+#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
+#define __FLT_MIN__        FLT_MIN
+#define __FLT_MAX__        FLT_MAX
+#define __FLT_EPSILON__    FLT_EPSILON
+// predefined by XLC on LoP
+#define __FLT_DENORM_MIN__ 1.40129846e-45F
+
+#define __DBL_MANT_DIG__   DBL_MANT_DIG
+#define __DBL_DIG__        DBL_DIG
+#define __DBL_MIN_EXP__    DBL_MIN_EXP
+#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
+#define __DBL_MAX_EXP__    DBL_MAX_EXP
+#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
+#define __DBL_MIN__        DBL_MIN
+#define __DBL_MAX__        DBL_MAX
+#define __DBL_EPSILON__    DBL_EPSILON
+// predefined by XLC on LoP
+#define __DBL_DENORM_MIN__ 4.9406564584124654e-324
+
+#define __LDBL_MANT_DIG__   LDBL_MANT_DIG
+#define __LDBL_DIG__        LDBL_DIG
+#define __LDBL_MIN_EXP__    LDBL_MIN_EXP
+#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
+#define __LDBL_MAX_EXP__    LDBL_MAX_EXP
+#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
+#define __LDBL_MIN__        LDBL_MIN
+#define __LDBL_MAX__        LDBL_MAX
+#define __LDBL_EPSILON__    LDBL_EPSILON
+// predefined by XLC on LoP
+#if __LONGDOUBLE128
+#define __LDBL_DENORM_MIN__ 4.94065645841246544176568792868221e-324L
+#else
+#define __LDBL_DENORM_MIN__ 4.9406564584124654e-324L
+#endif
+
+// predefined by XLC on LoP
+#define __CHAR_BIT__    8
+
+#endif // _AIX
+
+#endif // _LIBCPP_SUPPORT_IBM_LIMITS_H
diff --git a/gnu/llvm/libcxx/include/support/ibm/locale_mgmt_aix.h b/gnu/llvm/libcxx/include/support/ibm/locale_mgmt_aix.h
new file mode 100644
index 00000000000..e452dc32529
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/ibm/locale_mgmt_aix.h
@@ -0,0 +1,84 @@
+// -*- C++ -*-
+//===------------------- support/ibm/locale_mgmt_aix.h --------------------===//
+//
+// 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_SUPPORT_IBM_LOCALE_MGMT_AIX_H
+#define _LIBCPP_SUPPORT_IBM_LOCALE_MGMT_AIX_H
+
+#if defined(_AIX)
+#include "cstdlib"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(_AIX71)
+// AIX 7.1 and higher has these definitions.  Definitions and stubs
+// are provied here as a temporary workaround on AIX 6.1.
+
+#define LC_COLLATE_MASK         1
+#define LC_CTYPE_MASK           2
+#define LC_MESSAGES_MASK        4
+#define LC_MONETARY_MASK        8
+#define LC_NUMERIC_MASK         16
+#define LC_TIME_MASK            32
+#define LC_ALL_MASK             (LC_COLLATE_MASK | LC_CTYPE_MASK | \
+                                 LC_MESSAGES_MASK | LC_MONETARY_MASK |\
+                                 LC_NUMERIC_MASK | LC_TIME_MASK)
+
+typedef void* locale_t;
+
+// The following are stubs.  They are not supported on AIX 6.1.
+static inline
+locale_t newlocale(int category_mask, const char *locale, locale_t base)
+{
+  _LC_locale_t *newloc, *loc;
+  if ((loc = (_LC_locale_t *)__xopen_locale(locale)) == NULL)
+  {
+    errno = EINVAL;
+    return (locale_t)0;
+  }
+  if ((newloc = (_LC_locale_t *)calloc(1, sizeof(_LC_locale_t))) == NULL)
+  {
+    errno = ENOMEM;
+    return (locale_t)0;
+  }
+  if (!base)
+    base = (_LC_locale_t *)__xopen_locale("C");
+  memcpy(newloc, base, sizeof (_LC_locale_t));
+  if (category_mask & LC_COLLATE_MASK)
+    newloc->lc_collate = loc->lc_collate;
+  if (category_mask & LC_CTYPE_MASK)
+    newloc->lc_ctype = loc->lc_ctype;
+  //if (category_mask & LC_MESSAGES_MASK)
+  //  newloc->lc_messages = loc->lc_messages;
+  if (category_mask & LC_MONETARY_MASK)
+    newloc->lc_monetary = loc->lc_monetary;
+  if (category_mask & LC_TIME_MASK)
+    newloc->lc_time = loc->lc_time;
+  if (category_mask & LC_NUMERIC_MASK)
+    newloc->lc_numeric = loc->lc_numeric;
+  return (locale_t)newloc;
+}
+static inline
+void freelocale(locale_t locobj)
+{
+  free(locobj);
+}
+static inline
+locale_t uselocale(locale_t newloc)
+{
+  return (locale_t)0;
+}
+#endif // !defined(_AIX71)
+
+#ifdef __cplusplus
+}
+#endif
+#endif // defined(_AIX)
+#endif // _LIBCPP_SUPPORT_IBM_LOCALE_MGMT_AIX_H
diff --git a/gnu/llvm/libcxx/include/support/ibm/support.h b/gnu/llvm/libcxx/include/support/ibm/support.h
new file mode 100644
index 00000000000..0569cbe7460
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/ibm/support.h
@@ -0,0 +1,53 @@
+// -*- C++ -*-
+//===----------------------- support/ibm/support.h ----------------------===//
+//
+// 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_SUPPORT_IBM_SUPPORT_H
+#define _LIBCPP_SUPPORT_IBM_SUPPORT_H
+
+extern "builtin" int __popcnt4(unsigned int);
+extern "builtin" int __popcnt8(unsigned long long);
+extern "builtin" unsigned int __cnttz4(unsigned int);
+extern "builtin" unsigned int __cnttz8(unsigned long long);
+extern "builtin" unsigned int __cntlz4(unsigned int);
+extern "builtin" unsigned int __cntlz8(unsigned long long);
+
+// Builtin functions for counting population
+#define __builtin_popcount(x) __popcnt4(x)
+#define __builtin_popcountll(x) __popcnt8(x)
+#if defined(__64BIT__)
+#define __builtin_popcountl(x) __builtin_popcountll(x)
+#else
+#define __builtin_popcountl(x) __builtin_popcount(x)
+#endif
+
+// Builtin functions for counting trailing zeros
+#define __builtin_ctz(x) __cnttz4(x)
+#define __builtin_ctzll(x) __cnttz8(x)
+#if defined(__64BIT__)
+#define __builtin_ctzl(x) __builtin_ctzll(x)
+#else
+#define __builtin_ctzl(x) __builtin_ctz(x)
+#endif
+
+// Builtin functions for counting leading zeros
+#define __builtin_clz(x) __cntlz4(x)
+#define __builtin_clzll(x) __cntlz8(x)
+#if defined(__64BIT__)
+#define __builtin_clzl(x) __builtin_clzll(x)
+#else
+#define __builtin_clzl(x) __builtin_clz(x)
+#endif
+
+#if defined(__64BIT__)
+#define __SIZE_WIDTH__ 64
+#else
+#define __SIZE_WIDTH__ 32
+#endif
+
+#endif // _LIBCPP_SUPPORT_IBM_SUPPORT_H
diff --git a/gnu/llvm/libcxx/include/support/ibm/xlocale.h b/gnu/llvm/libcxx/include/support/ibm/xlocale.h
new file mode 100644
index 00000000000..431bf626876
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/ibm/xlocale.h
@@ -0,0 +1,270 @@
+// -*- C++ -*-
+//===--------------------- support/ibm/xlocale.h -------------------===//
+//
+// 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_SUPPORT_IBM_XLOCALE_H
+#define _LIBCPP_SUPPORT_IBM_XLOCALE_H
+#include <support/ibm/locale_mgmt_aix.h>
+
+#if defined(_AIX)
+#include "cstdlib"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if !defined(_AIX71)
+// AIX 7.1 and higher has these definitions.  Definitions and stubs
+// are provied here as a temporary workaround on AIX 6.1.
+static inline
+int isalnum_l(int c, locale_t locale)
+{
+  return __xisalnum(locale, c);
+}
+static inline
+int isalpha_l(int c, locale_t locale)
+{
+  return __xisalpha(locale, c);
+}
+static inline
+int isblank_l(int c, locale_t locale)
+{
+  return __xisblank(locale, c);
+}
+static inline
+int iscntrl_l(int c, locale_t locale)
+{
+  return __xiscntrl(locale, c);
+}
+static inline
+int isdigit_l(int c, locale_t locale)
+{
+  return __xisdigit(locale, c);
+}
+static inline
+int isgraph_l(int c, locale_t locale)
+{
+  return __xisgraph(locale, c);
+}
+static inline
+int islower_l(int c, locale_t locale)
+{
+  return __xislower(locale, c);
+}
+static inline
+int isprint_l(int c, locale_t locale)
+{
+  return __xisprint(locale, c);
+}
+
+static inline
+int ispunct_l(int c, locale_t locale)
+{
+  return __xispunct(locale, c);
+}
+static inline
+int isspace_l(int c, locale_t locale)
+{
+  return __xisspace(locale, c);
+}
+static inline
+int isupper_l(int c, locale_t locale)
+{
+  return __xisupper(locale, c);
+}
+
+static inline
+int isxdigit_l(int c, locale_t locale)
+{
+  return __xisxdigit(locale, c);
+}
+
+static inline
+int iswalnum_l(wchar_t wc, locale_t locale)
+{
+  return __xiswalnum(locale, wc);
+}
+
+static inline
+int iswalpha_l(wchar_t wc, locale_t locale)
+{
+  return __xiswalpha(locale, wc);
+}
+
+static inline
+int iswblank_l(wchar_t wc, locale_t locale)
+{
+  return __xiswblank(locale, wc);
+}
+
+static inline
+int iswcntrl_l(wchar_t wc, locale_t locale)
+{
+  return __xiswcntrl(locale, wc);
+}
+
+static inline
+int iswdigit_l(wchar_t wc, locale_t locale)
+{
+  return __xiswdigit(locale, wc);
+}
+
+static inline
+int iswgraph_l(wchar_t wc, locale_t locale)
+{
+  return __xiswgraph(locale, wc);
+}
+
+static inline
+int iswlower_l(wchar_t wc, locale_t locale)
+{
+  return __xiswlower(locale, wc);
+}
+
+static inline
+int iswprint_l(wchar_t wc, locale_t locale)
+{
+  return __xiswprint(locale, wc);
+}
+
+static inline
+int iswpunct_l(wchar_t wc, locale_t locale)
+{
+  return __xiswpunct(locale, wc);
+}
+
+static inline
+int iswspace_l(wchar_t wc, locale_t locale)
+{
+  return __xiswspace(locale, wc);
+}
+
+static inline
+int iswupper_l(wchar_t wc, locale_t locale)
+{
+  return __xiswupper(locale, wc);
+}
+
+static inline
+int iswxdigit_l(wchar_t wc, locale_t locale)
+{
+  return __xiswxdigit(locale, wc);
+}
+
+static inline
+int iswctype_l(wint_t wc, wctype_t desc, locale_t locale)
+{
+  return __xiswctype(locale, wc, desc);
+}
+
+static inline
+int toupper_l(int c, locale_t locale)
+{
+  return __xtoupper(locale, c);
+}
+static inline
+int tolower_l(int c, locale_t locale)
+{
+  return __xtolower(locale, c);
+}
+static inline
+wint_t towupper_l(wint_t wc, locale_t locale)
+{
+  return __xtowupper(locale, wc);
+}
+static inline
+wint_t towlower_l(wint_t wc, locale_t locale)
+{
+  return __xtowlower(locale, wc);
+}
+
+static inline
+int strcoll_l(const char *__s1, const char *__s2, locale_t locale)
+{
+  return __xstrcoll(locale, __s1, __s2);
+}
+static inline
+int wcscoll_l(const wchar_t *__s1, const wchar_t *__s2, locale_t locale)
+{
+  return __xwcscoll(locale, __s1, __s2);
+}
+static inline
+size_t strxfrm_l(char *__s1, const char *__s2, size_t __n, locale_t locale)
+{
+  return __xstrxfrm(locale, __s1, __s2, __n);
+}
+
+static inline
+size_t wcsxfrm_l(wchar_t *__ws1, const wchar_t *__ws2, size_t __n,
+    locale_t locale)
+{
+  return __xwcsxfrm(locale, __ws1, __ws2, __n);
+}
+#endif // !defined(_AIX71)
+
+// strftime_l() is defined by POSIX. However, AIX 7.1 does not have it
+// implemented yet.
+static inline
+size_t strftime_l(char *__s, size_t __size, const char *__fmt,
+                  const struct tm *__tm, locale_t locale) {
+  return __xstrftime(locale, __s, __size, __fmt, __tm);
+}
+
+// The following are not POSIX routines.  These are quick-and-dirty hacks
+// to make things pretend to work
+static inline
+long long strtoll_l(const char *__nptr, char **__endptr,
+    int __base, locale_t locale) {
+  return strtoll(__nptr, __endptr, __base);
+}
+static inline
+long strtol_l(const char *__nptr, char **__endptr,
+    int __base, locale_t locale) {
+  return strtol(__nptr, __endptr, __base);
+}
+static inline
+long double strtold_l(const char *__nptr, char **__endptr,
+    locale_t locale) {
+  return strtold(__nptr, __endptr);
+}
+static inline
+unsigned long long strtoull_l(const char *__nptr, char **__endptr,
+    int __base, locale_t locale) {
+  return strtoull(__nptr, __endptr, __base);
+}
+static inline
+unsigned long strtoul_l(const char *__nptr, char **__endptr,
+    int __base, locale_t locale) {
+  return strtoul(__nptr, __endptr, __base);
+}
+
+static inline
+int vasprintf(char **strp, const char *fmt, va_list ap)
+{
+  const size_t buff_size = 256;
+  int str_size;
+  if ((*strp = (char *)malloc(buff_size)) == NULL)
+  {
+    return -1;
+  }
+  if ((str_size = vsnprintf(*strp, buff_size, fmt,  ap)) >= buff_size)
+  {
+    if ((*strp = (char *)realloc(*strp, str_size + 1)) == NULL)
+    {
+      return -1;
+    }
+    str_size = vsnprintf(*strp, str_size + 1, fmt,  ap);
+  }
+  return str_size;
+}
+
+#ifdef __cplusplus
+}
+#endif
+#endif // defined(_AIX)
+#endif // _LIBCPP_SUPPORT_IBM_XLOCALE_H
diff --git a/gnu/llvm/libcxx/include/support/musl/xlocale.h b/gnu/llvm/libcxx/include/support/musl/xlocale.h
new file mode 100644
index 00000000000..722d13fa1d6
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/musl/xlocale.h
@@ -0,0 +1,57 @@
+// -*- C++ -*-
+//===------------------- support/musl/xlocale.h ------------------------===//
+//
+// 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
+
+static inline long long strtoll_l(const char *nptr, char **endptr, int base,
+                                  locale_t) {
+  return strtoll(nptr, endptr, base);
+}
+
+static inline unsigned long long strtoull_l(const char *nptr, char **endptr,
+                                            int base, locale_t) {
+  return strtoull(nptr, endptr, base);
+}
+
+static inline long long wcstoll_l(const wchar_t *nptr, wchar_t **endptr,
+                                  int base, locale_t) {
+  return wcstoll(nptr, endptr, base);
+}
+
+static inline unsigned long long wcstoull_l(const wchar_t *nptr,
+                                            wchar_t **endptr, int base,
+                                            locale_t) {
+  return wcstoull(nptr, endptr, base);
+}
+
+static inline 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
diff --git a/gnu/llvm/libcxx/include/support/newlib/xlocale.h b/gnu/llvm/libcxx/include/support/newlib/xlocale.h
new file mode 100644
index 00000000000..25fa798b6d0
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/newlib/xlocale.h
@@ -0,0 +1,27 @@
+//===----------------------------------------------------------------------===//
+//
+// 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_SUPPORT_NEWLIB_XLOCALE_H
+#define _LIBCPP_SUPPORT_NEWLIB_XLOCALE_H
+
+#if defined(_NEWLIB_VERSION)
+
+#include <cstdlib>
+#include <clocale>
+#include <cwctype>
+#include <ctype.h>
+#if !defined(__NEWLIB__) || __NEWLIB__ < 2 || \
+    __NEWLIB__ == 2 && __NEWLIB_MINOR__ < 5
+#include <support/xlocale/__nop_locale_mgmt.h>
+#include <support/xlocale/__posix_l_fallback.h>
+#include <support/xlocale/__strtonum_fallback.h>
+#endif
+
+#endif // _NEWLIB_VERSION
+
+#endif
diff --git a/gnu/llvm/libcxx/include/support/solaris/floatingpoint.h b/gnu/llvm/libcxx/include/support/solaris/floatingpoint.h
new file mode 100644
index 00000000000..5f1628fbe4f
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/solaris/floatingpoint.h
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#define atof sun_atof
+#define strtod sun_strtod
+#include_next "floatingpoint.h"
+#undef atof
+#undef strtod
diff --git a/gnu/llvm/libcxx/include/support/solaris/wchar.h b/gnu/llvm/libcxx/include/support/solaris/wchar.h
new file mode 100644
index 00000000000..f01fd743a23
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/solaris/wchar.h
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#define iswalpha sun_iswalpha
+#define iswupper sun_iswupper
+#define iswlower sun_iswlower
+#define iswdigit sun_iswdigit
+#define iswxdigit sun_iswxdigit
+#define iswalnum sun_iswalnum
+#define iswspace sun_iswspace
+#define iswpunct sun_iswpunct
+#define iswprint sun_iswprint
+#define iswgraph sun_iswgraph
+#define iswcntrl sun_iswcntrl
+#define iswctype sun_iswctype
+#define towlower sun_towlower
+#define towupper sun_towupper
+#define wcswcs sun_wcswcs
+#define wcswidth sun_wcswidth
+#define wcwidth sun_wcwidth
+#define wctype sun_wctype
+#define _WCHAR_T 1
+#include_next "wchar.h"
+#undef iswalpha
+#undef iswupper
+#undef iswlower
+#undef iswdigit
+#undef iswxdigit
+#undef iswalnum
+#undef iswspace
+#undef iswpunct
+#undef iswprint
+#undef iswgraph
+#undef iswcntrl
+#undef iswctype
+#undef towlower
+#undef towupper
+#undef wcswcs
+#undef wcswidth
+#undef wcwidth
+#undef wctype
diff --git a/gnu/llvm/libcxx/include/support/solaris/xlocale.h b/gnu/llvm/libcxx/include/support/solaris/xlocale.h
new file mode 100644
index 00000000000..05131f0272e
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/solaris/xlocale.h
@@ -0,0 +1,76 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+////////////////////////////////////////////////////////////////////////////////
+// Minimal xlocale implementation for Solaris.  This implements the subset of
+// the xlocale APIs that libc++ depends on.
+////////////////////////////////////////////////////////////////////////////////
+#ifndef __XLOCALE_H_INCLUDED
+#define __XLOCALE_H_INCLUDED
+
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+int snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...);
+int asprintf_l(char **__s, locale_t __l, const char *__format, ...);
+
+int sscanf_l(const char *__s, locale_t __l, const char *__format, ...);
+
+int toupper_l(int __c, locale_t __l);
+int tolower_l(int __c, locale_t __l);
+
+struct lconv *localeconv(void);
+struct lconv *localeconv_l(locale_t __l);
+
+// FIXME: These are quick-and-dirty hacks to make things pretend to work
+static inline
+long long strtoll_l(const char *__nptr, char **__endptr,
+    int __base, locale_t __loc) {
+  return strtoll(__nptr, __endptr, __base);
+}
+static inline
+long strtol_l(const char *__nptr, char **__endptr,
+    int __base, locale_t __loc) {
+  return strtol(__nptr, __endptr, __base);
+}
+static inline
+unsigned long long strtoull_l(const char *__nptr, char **__endptr,
+    int __base, locale_t __loc) {
+  return strtoull(__nptr, __endptr, __base);
+}
+static inline
+unsigned long strtoul_l(const char *__nptr, char **__endptr,
+    int __base, locale_t __loc) {
+  return strtoul(__nptr, __endptr, __base);
+}
+static inline
+float strtof_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtof(__nptr, __endptr);
+}
+static inline
+double strtod_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtod(__nptr, __endptr);
+}
+static inline
+long double strtold_l(const char *__nptr, char **__endptr,
+    locale_t __loc) {
+  return strtold(__nptr, __endptr);
+}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/gnu/llvm/libcxx/include/support/win32/limits_msvc_win32.h b/gnu/llvm/libcxx/include/support/win32/limits_msvc_win32.h
new file mode 100644
index 00000000000..7bb835559a3
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/win32/limits_msvc_win32.h
@@ -0,0 +1,71 @@
+// -*- C++ -*-
+//===------------------ support/win32/limits_msvc_win32.h -----------------===//
+//
+// 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_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
+#define _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
+
+#if !defined(_LIBCPP_MSVCRT)
+#error "This header complements the Microsoft C Runtime library, and should not be included otherwise."
+#endif
+#if defined(__clang__)
+#error "This header should only be included when using Microsofts C1XX frontend"
+#endif
+
+#include <limits.h> // CHAR_BIT
+#include <float.h> // limit constants
+#include <math.h> // HUGE_VAL
+#include <ymath.h> // internal MSVC header providing the needed functionality
+
+#define __CHAR_BIT__       CHAR_BIT
+
+#define __FLT_MANT_DIG__   FLT_MANT_DIG
+#define __FLT_DIG__        FLT_DIG
+#define __FLT_RADIX__      FLT_RADIX
+#define __FLT_MIN_EXP__    FLT_MIN_EXP
+#define __FLT_MIN_10_EXP__ FLT_MIN_10_EXP
+#define __FLT_MAX_EXP__    FLT_MAX_EXP
+#define __FLT_MAX_10_EXP__ FLT_MAX_10_EXP
+#define __FLT_MIN__        FLT_MIN
+#define __FLT_MAX__        FLT_MAX
+#define __FLT_EPSILON__    FLT_EPSILON
+// predefined by MinGW GCC
+#define __FLT_DENORM_MIN__ 1.40129846432481707092e-45F
+
+#define __DBL_MANT_DIG__   DBL_MANT_DIG
+#define __DBL_DIG__        DBL_DIG
+#define __DBL_RADIX__      DBL_RADIX
+#define __DBL_MIN_EXP__    DBL_MIN_EXP
+#define __DBL_MIN_10_EXP__ DBL_MIN_10_EXP
+#define __DBL_MAX_EXP__    DBL_MAX_EXP
+#define __DBL_MAX_10_EXP__ DBL_MAX_10_EXP
+#define __DBL_MIN__        DBL_MIN
+#define __DBL_MAX__        DBL_MAX
+#define __DBL_EPSILON__    DBL_EPSILON
+// predefined by MinGW GCC
+#define __DBL_DENORM_MIN__ double(4.94065645841246544177e-324L)
+
+#define __LDBL_MANT_DIG__   LDBL_MANT_DIG
+#define __LDBL_DIG__        LDBL_DIG
+#define __LDBL_RADIX__      LDBL_RADIX
+#define __LDBL_MIN_EXP__    LDBL_MIN_EXP
+#define __LDBL_MIN_10_EXP__ LDBL_MIN_10_EXP
+#define __LDBL_MAX_EXP__    LDBL_MAX_EXP
+#define __LDBL_MAX_10_EXP__ LDBL_MAX_10_EXP
+#define __LDBL_MIN__        LDBL_MIN
+#define __LDBL_MAX__        LDBL_MAX
+#define __LDBL_EPSILON__    LDBL_EPSILON
+// predefined by MinGW GCC
+#define __LDBL_DENORM_MIN__ 3.64519953188247460253e-4951L
+
+// __builtin replacements/workarounds
+#define __builtin_huge_vall()    _LInf._Long_double
+#define __builtin_nanl(__dummmy) _LNan._Long_double
+#define __builtin_nansl(__dummy) _LSnan._Long_double
+
+#endif // _LIBCPP_SUPPORT_WIN32_LIMITS_MSVC_WIN32_H
diff --git a/gnu/llvm/libcxx/include/support/win32/locale_win32.h b/gnu/llvm/libcxx/include/support/win32/locale_win32.h
new file mode 100644
index 00000000000..8d7779e0cca
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/win32/locale_win32.h
@@ -0,0 +1,264 @@
+// -*- C++ -*-
+//===--------------------- support/win32/locale_win32.h -------------------===//
+//
+// 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_SUPPORT_WIN32_LOCALE_WIN32_H
+#define _LIBCPP_SUPPORT_WIN32_LOCALE_WIN32_H
+
+#include <__config>
+#include <stdio.h>
+#include <xlocinfo.h> // _locale_t
+#include <__nullptr>
+
+#define LC_COLLATE_MASK _M_COLLATE
+#define LC_CTYPE_MASK _M_CTYPE
+#define LC_MONETARY_MASK _M_MONETARY
+#define LC_NUMERIC_MASK _M_NUMERIC
+#define LC_TIME_MASK _M_TIME
+#define LC_MESSAGES_MASK _M_MESSAGES
+#define LC_ALL_MASK (  LC_COLLATE_MASK \
+                     | LC_CTYPE_MASK \
+                     | LC_MESSAGES_MASK \
+                     | LC_MONETARY_MASK \
+                     | LC_NUMERIC_MASK \
+                     | LC_TIME_MASK )
+
+class __lconv_storage {
+public:
+    __lconv_storage(const lconv *__lc_input) {
+        __lc = *__lc_input;
+
+        __decimal_point = __lc_input->decimal_point;
+        __thousands_sep = __lc_input->thousands_sep;
+        __grouping = __lc_input->grouping;
+        __int_curr_symbol = __lc_input->int_curr_symbol;
+        __currency_symbol = __lc_input->currency_symbol;
+        __mon_decimal_point = __lc_input->mon_decimal_point;
+        __mon_thousands_sep = __lc_input->mon_thousands_sep;
+        __mon_grouping = __lc_input->mon_grouping;
+        __positive_sign = __lc_input->positive_sign;
+        __negative_sign = __lc_input->negative_sign;
+
+        __lc.decimal_point = const_cast<char *>(__decimal_point.c_str());
+        __lc.thousands_sep = const_cast<char *>(__thousands_sep.c_str());
+        __lc.grouping = const_cast<char *>(__grouping.c_str());
+        __lc.int_curr_symbol = const_cast<char *>(__int_curr_symbol.c_str());
+        __lc.currency_symbol = const_cast<char *>(__currency_symbol.c_str());
+        __lc.mon_decimal_point = const_cast<char *>(__mon_decimal_point.c_str());
+        __lc.mon_thousands_sep = const_cast<char *>(__mon_thousands_sep.c_str());
+        __lc.mon_grouping = const_cast<char *>(__mon_grouping.c_str());
+        __lc.positive_sign = const_cast<char *>(__positive_sign.c_str());
+        __lc.negative_sign = const_cast<char *>(__negative_sign.c_str());
+    }
+
+    lconv *__get() {
+        return &__lc;
+    }
+private:
+    lconv __lc;
+    std::string __decimal_point;
+    std::string __thousands_sep;
+    std::string __grouping;
+    std::string __int_curr_symbol;
+    std::string __currency_symbol;
+    std::string __mon_decimal_point;
+    std::string __mon_thousands_sep;
+    std::string __mon_grouping;
+    std::string __positive_sign;
+    std::string __negative_sign;
+};
+
+class locale_t {
+public:
+    locale_t()
+        : __locale(nullptr), __locale_str(nullptr), __lc(nullptr) {}
+    locale_t(std::nullptr_t)
+        : __locale(nullptr), __locale_str(nullptr), __lc(nullptr) {}
+    locale_t(_locale_t __xlocale, const char* __xlocale_str)
+        : __locale(__xlocale), __locale_str(__xlocale_str), __lc(nullptr) {}
+    locale_t(const locale_t &__l)
+        : __locale(__l.__locale), __locale_str(__l.__locale_str), __lc(nullptr) {}
+
+    ~locale_t() {
+        delete __lc;
+    }
+
+    locale_t &operator =(const locale_t &__l) {
+        __locale = __l.__locale;
+        __locale_str = __l.__locale_str;
+        // __lc not copied
+        return *this;
+    }
+
+    friend bool operator==(const locale_t& __left, const locale_t& __right) {
+        return __left.__locale == __right.__locale;
+    }
+
+    friend bool operator==(const locale_t& __left, int __right) {
+        return __left.__locale == nullptr && __right == 0;
+    }
+
+    friend bool operator==(const locale_t& __left, long long __right) {
+        return __left.__locale == nullptr && __right == 0;
+    }
+
+    friend bool operator==(const locale_t& __left, std::nullptr_t) {
+        return __left.__locale == nullptr;
+    }
+
+    friend bool operator==(int __left, const locale_t& __right) {
+        return __left == 0 && nullptr == __right.__locale;
+    }
+
+    friend bool operator==(std::nullptr_t, const locale_t& __right) {
+        return nullptr == __right.__locale;
+    }
+
+    friend bool operator!=(const locale_t& __left, const locale_t& __right) {
+        return !(__left == __right);
+    }
+
+    friend bool operator!=(const locale_t& __left, int __right) {
+        return !(__left == __right);
+    }
+
+    friend bool operator!=(const locale_t& __left, long long __right) {
+        return !(__left == __right);
+    }
+
+    friend bool operator!=(const locale_t& __left, std::nullptr_t __right) {
+        return !(__left == __right);
+    }
+
+    friend bool operator!=(int __left, const locale_t& __right) {
+        return !(__left == __right);
+    }
+
+    friend bool operator!=(std::nullptr_t __left, const locale_t& __right) {
+        return !(__left == __right);
+    }
+
+    operator bool() const {
+        return __locale != nullptr;
+    }
+
+    const char* __get_locale() const { return __locale_str; }
+
+    operator _locale_t() const {
+        return __locale;
+    }
+
+    lconv *__store_lconv(const lconv *__input_lc) {
+        delete __lc;
+        __lc = new __lconv_storage(__input_lc);
+        return __lc->__get();
+    }
+private:
+    _locale_t __locale;
+    const char* __locale_str;
+    __lconv_storage *__lc = nullptr;
+};
+
+// Locale management functions
+#define freelocale _free_locale
+// FIXME: base currently unused. Needs manual work to construct the new locale
+locale_t newlocale( int mask, const char * locale, locale_t base );
+// uselocale can't be implemented on Windows because Windows allows partial modification
+// of thread-local locale and so _get_current_locale() returns a copy while uselocale does
+// not create any copies.
+// We can still implement raii even without uselocale though.
+
+
+lconv *localeconv_l( locale_t &loc );
+size_t mbrlen_l( const char *__restrict s, size_t n,
+                 mbstate_t *__restrict ps, locale_t loc);
+size_t mbsrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
+                    size_t len, mbstate_t *__restrict ps, locale_t loc );
+size_t wcrtomb_l( char *__restrict s, wchar_t wc, mbstate_t *__restrict ps,
+                  locale_t loc);
+size_t mbrtowc_l( wchar_t *__restrict pwc, const char *__restrict s,
+                  size_t n, mbstate_t *__restrict ps, locale_t loc);
+size_t mbsnrtowcs_l( wchar_t *__restrict dst, const char **__restrict src,
+                     size_t nms, size_t len, mbstate_t *__restrict ps, locale_t loc);
+size_t wcsnrtombs_l( char *__restrict dst, const wchar_t **__restrict src,
+                     size_t nwc, size_t len, mbstate_t *__restrict ps, locale_t loc);
+wint_t btowc_l( int c, locale_t loc );
+int wctob_l( wint_t c, locale_t loc );
+
+decltype(MB_CUR_MAX) MB_CUR_MAX_L( locale_t __l );
+
+// the *_l functions are prefixed on Windows, only available for msvcr80+, VS2005+
+#define mbtowc_l _mbtowc_l
+#define strtoll_l _strtoi64_l
+#define strtoull_l _strtoui64_l
+#define strtod_l _strtod_l
+#if defined(_LIBCPP_MSVCRT)
+#define strtof_l _strtof_l
+#define strtold_l _strtold_l
+#else
+float strtof_l(const char*, char**, locale_t);
+long double strtold_l(const char*, char**, locale_t);
+#endif
+inline _LIBCPP_INLINE_VISIBILITY
+int
+islower_l(int c, _locale_t loc)
+{
+ return _islower_l((int)c, loc);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY
+int
+isupper_l(int c, _locale_t loc)
+{
+ return _isupper_l((int)c, loc);
+}
+
+#define isdigit_l _isdigit_l
+#define isxdigit_l _isxdigit_l
+#define strcoll_l _strcoll_l
+#define strxfrm_l _strxfrm_l
+#define wcscoll_l _wcscoll_l
+#define wcsxfrm_l _wcsxfrm_l
+#define toupper_l _toupper_l
+#define tolower_l _tolower_l
+#define iswspace_l _iswspace_l
+#define iswprint_l _iswprint_l
+#define iswcntrl_l _iswcntrl_l
+#define iswupper_l _iswupper_l
+#define iswlower_l _iswlower_l
+#define iswalpha_l _iswalpha_l
+#define iswdigit_l _iswdigit_l
+#define iswpunct_l _iswpunct_l
+#define iswxdigit_l _iswxdigit_l
+#define towupper_l _towupper_l
+#define towlower_l _towlower_l
+#if defined(__MINGW32__) && __MSVCRT_VERSION__ < 0x0800
+_LIBCPP_FUNC_VIS size_t strftime_l(char *ret, size_t n, const char *format,
+                                   const struct tm *tm, locale_t loc);
+#else
+#define strftime_l _strftime_l
+#endif
+#define sscanf_l( __s, __l, __f, ...) _sscanf_l( __s, __f, __l, __VA_ARGS__ )
+#define sprintf_l( __s, __l, __f, ... ) _sprintf_l( __s, __f, __l, __VA_ARGS__ )
+#define vsprintf_l( __s, __l, __f, ... ) _vsprintf_l( __s, __f, __l, __VA_ARGS__ )
+#define vsnprintf_l( __s, __n, __l, __f, ... ) _vsnprintf_l( __s, __n, __f, __l, __VA_ARGS__ )
+_LIBCPP_FUNC_VIS int snprintf_l(char *ret, size_t n, locale_t loc, const char *format, ...);
+_LIBCPP_FUNC_VIS int asprintf_l( char **ret, locale_t loc, const char *format, ... );
+_LIBCPP_FUNC_VIS int vasprintf_l( char **ret, locale_t loc, const char *format, va_list ap );
+
+// not-so-pressing FIXME: use locale to determine blank characters
+inline int isblank_l( int c, locale_t /*loc*/ )
+{
+    return ( c == ' ' || c == '\t' );
+}
+inline int iswblank_l( wint_t c, locale_t /*loc*/ )
+{
+    return ( c == L' ' || c == L'\t' );
+}
+
+#endif // _LIBCPP_SUPPORT_WIN32_LOCALE_WIN32_H
diff --git a/gnu/llvm/libcxx/include/support/xlocale/__nop_locale_mgmt.h b/gnu/llvm/libcxx/include/support/xlocale/__nop_locale_mgmt.h
new file mode 100644
index 00000000000..f33d3894c3a
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/xlocale/__nop_locale_mgmt.h
@@ -0,0 +1,51 @@
+// -*- C++ -*-
+//===------------  support/xlocale/__nop_locale_mgmt.h -----------------===//
+//
+// 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_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
+#define _LIBCPP_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// Patch over lack of extended locale support
+typedef void *locale_t;
+static inline locale_t duplocale(locale_t) {
+  return NULL;
+}
+
+static inline void freelocale(locale_t) {
+}
+
+static inline locale_t newlocale(int, const char *, locale_t) {
+  return NULL;
+}
+
+static inline locale_t uselocale(locale_t) {
+  return NULL;
+}
+
+#define LC_COLLATE_MASK  (1 << LC_COLLATE)
+#define LC_CTYPE_MASK    (1 << LC_CTYPE)
+#define LC_MESSAGES_MASK (1 << LC_MESSAGES)
+#define LC_MONETARY_MASK (1 << LC_MONETARY)
+#define LC_NUMERIC_MASK  (1 << LC_NUMERIC)
+#define LC_TIME_MASK     (1 << LC_TIME)
+#define LC_ALL_MASK (LC_COLLATE_MASK|\
+                     LC_CTYPE_MASK|\
+                     LC_MONETARY_MASK|\
+                     LC_NUMERIC_MASK|\
+                     LC_TIME_MASK|\
+                     LC_MESSAGES_MASK)
+
+#ifdef __cplusplus
+} // extern "C"
+#endif
+
+#endif // _LIBCPP_SUPPORT_XLOCALE_NOP_LOCALE_MGMT_H
diff --git a/gnu/llvm/libcxx/include/support/xlocale/__posix_l_fallback.h b/gnu/llvm/libcxx/include/support/xlocale/__posix_l_fallback.h
new file mode 100644
index 00000000000..f3df6c46fba
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/xlocale/__posix_l_fallback.h
@@ -0,0 +1,164 @@
+// -*- C++ -*-
+//===--------------- support/xlocale/__posix_l_fallback.h -----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+// These are reimplementations of some extended locale functions ( *_l ) that
+// are normally part of POSIX.  This shared implementation provides parts of the
+// extended locale support for libc's that normally don't have any (like
+// Android's bionic and Newlib).
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
+#define _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+inline _LIBCPP_INLINE_VISIBILITY int isalnum_l(int c, locale_t) {
+  return ::isalnum(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isalpha_l(int c, locale_t) {
+  return ::isalpha(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isblank_l(int c, locale_t) {
+  return ::isblank(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iscntrl_l(int c, locale_t) {
+  return ::iscntrl(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isdigit_l(int c, locale_t) {
+  return ::isdigit(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isgraph_l(int c, locale_t) {
+  return ::isgraph(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int islower_l(int c, locale_t) {
+  return ::islower(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isprint_l(int c, locale_t) {
+  return ::isprint(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int ispunct_l(int c, locale_t) {
+  return ::ispunct(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isspace_l(int c, locale_t) {
+  return ::isspace(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isupper_l(int c, locale_t) {
+  return ::isupper(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int isxdigit_l(int c, locale_t) {
+  return ::isxdigit(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswalnum_l(wint_t c, locale_t) {
+  return ::iswalnum(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswalpha_l(wint_t c, locale_t) {
+  return ::iswalpha(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswblank_l(wint_t c, locale_t) {
+  return ::iswblank(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswcntrl_l(wint_t c, locale_t) {
+  return ::iswcntrl(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswdigit_l(wint_t c, locale_t) {
+  return ::iswdigit(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswgraph_l(wint_t c, locale_t) {
+  return ::iswgraph(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswlower_l(wint_t c, locale_t) {
+  return ::iswlower(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswprint_l(wint_t c, locale_t) {
+  return ::iswprint(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswpunct_l(wint_t c, locale_t) {
+  return ::iswpunct(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswspace_l(wint_t c, locale_t) {
+  return ::iswspace(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswupper_l(wint_t c, locale_t) {
+  return ::iswupper(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int iswxdigit_l(wint_t c, locale_t) {
+  return ::iswxdigit(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int toupper_l(int c, locale_t) {
+  return ::toupper(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int tolower_l(int c, locale_t) {
+  return ::tolower(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY wint_t towupper_l(wint_t c, locale_t) {
+  return ::towupper(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY wint_t towlower_l(wint_t c, locale_t) {
+  return ::towlower(c);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int strcoll_l(const char *s1, const char *s2,
+                                               locale_t) {
+  return ::strcoll(s1, s2);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY size_t strxfrm_l(char *dest, const char *src,
+                                                  size_t n, locale_t) {
+  return ::strxfrm(dest, src, n);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY size_t strftime_l(char *s, size_t max,
+                                                   const char *format,
+                                                   const struct tm *tm, locale_t) {
+  return ::strftime(s, max, format, tm);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY int wcscoll_l(const wchar_t *ws1,
+                                               const wchar_t *ws2, locale_t) {
+  return ::wcscoll(ws1, ws2);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY size_t wcsxfrm_l(wchar_t *dest, const wchar_t *src,
+                                                  size_t n, locale_t) {
+  return ::wcsxfrm(dest, src, n);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _LIBCPP_SUPPORT_XLOCALE_POSIX_L_FALLBACK_H
diff --git a/gnu/llvm/libcxx/include/support/xlocale/__strtonum_fallback.h b/gnu/llvm/libcxx/include/support/xlocale/__strtonum_fallback.h
new file mode 100644
index 00000000000..df38598056a
--- /dev/null
+++ b/gnu/llvm/libcxx/include/support/xlocale/__strtonum_fallback.h
@@ -0,0 +1,66 @@
+// -*- C++ -*-
+//===-------------- support/xlocale/__strtonum_fallback.h -----------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+// These are reimplementations of some extended locale functions ( *_l ) that
+// aren't part of POSIX.  They are widely available though (GLIBC, BSD, maybe
+// others).  The unifying aspect in this case is that all of these functions
+// convert strings to some numeric type.
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H
+#define _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+inline _LIBCPP_INLINE_VISIBILITY float strtof_l(const char *nptr,
+                                                char **endptr, locale_t) {
+  return ::strtof(nptr, endptr);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY double strtod_l(const char *nptr,
+                                                 char **endptr, locale_t) {
+  return ::strtod(nptr, endptr);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY long double strtold_l(const char *nptr,
+                                                       char **endptr, locale_t) {
+  return ::strtold(nptr, endptr);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY long long
+strtoll_l(const char *nptr, char **endptr, int base, locale_t) {
+  return ::strtoll(nptr, endptr, base);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY unsigned long long
+strtoull_l(const char *nptr, char **endptr, int base, locale_t) {
+  return ::strtoull(nptr, endptr, base);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY long long
+wcstoll_l(const wchar_t *nptr, wchar_t **endptr, int base, locale_t) {
+  return ::wcstoll(nptr, endptr, base);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY unsigned long long
+wcstoull_l(const wchar_t *nptr, wchar_t **endptr, int base, locale_t) {
+  return ::wcstoull(nptr, endptr, base);
+}
+
+inline _LIBCPP_INLINE_VISIBILITY long double wcstold_l(const wchar_t *nptr,
+                                                       wchar_t **endptr, locale_t) {
+  return ::wcstold(nptr, endptr);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _LIBCPP_SUPPORT_XLOCALE_STRTONUM_FALLBACK_H