Import libc++ 10.0.1 release.

1 files changed, 159 insertions, 0 deletions

diff --git a/gnu/llvm/libcxx/src/iostream.cpp b/gnu/llvm/libcxx/src/iostream.cpp
new file mode 100644
index 00000000000..ad1920abc65
--- /dev/null
+++ b/gnu/llvm/libcxx/src/iostream.cpp
@@ -0,0 +1,159 @@
+//===------------------------ iostream.cpp --------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "__std_stream"
+#include "__locale"
+#include "string"
+#include "new"
+
+#define _str(s) #s
+#define str(s) _str(s)
+#define _LIBCPP_ABI_NAMESPACE_STR str(_LIBCPP_ABI_NAMESPACE)
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+#ifndef _LIBCPP_HAS_NO_STDIN
+_ALIGNAS_TYPE (istream) _LIBCPP_FUNC_VIS char cin[sizeof(istream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdinbuf<char> ) static char __cin[sizeof(__stdinbuf <char>)];
+static mbstate_t mb_cin;
+_ALIGNAS_TYPE (wistream) _LIBCPP_FUNC_VIS char wcin[sizeof(wistream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcin@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_istream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdinbuf<wchar_t> ) static char __wcin[sizeof(__stdinbuf <wchar_t>)];
+static mbstate_t mb_wcin;
+#endif
+
+#ifndef _LIBCPP_HAS_NO_STDOUT
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cout[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cout[sizeof(__stdoutbuf<char>)];
+static mbstate_t mb_cout;
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcout[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcout@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcout[sizeof(__stdoutbuf<wchar_t>)];
+static mbstate_t mb_wcout;
+#endif
+
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char cerr[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?cerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<char>) static char __cerr[sizeof(__stdoutbuf<char>)];
+static mbstate_t mb_cerr;
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wcerr[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wcerr@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (__stdoutbuf<wchar_t>) static char __wcerr[sizeof(__stdoutbuf<wchar_t>)];
+static mbstate_t mb_wcerr;
+
+_ALIGNAS_TYPE (ostream) _LIBCPP_FUNC_VIS char clog[sizeof(ostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?clog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@DU?$char_traits@D@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+_ALIGNAS_TYPE (wostream) _LIBCPP_FUNC_VIS char wclog[sizeof(wostream)]
+#if defined(_LIBCPP_ABI_MICROSOFT) && defined(__clang__)
+__asm__("?wclog@" _LIBCPP_ABI_NAMESPACE_STR "@std@@3V?$basic_ostream@_WU?$char_traits@_W@" _LIBCPP_ABI_NAMESPACE_STR "@std@@@12@A")
+#endif
+;
+
+_LIBCPP_HIDDEN ios_base::Init __start_std_streams;
+
+// On Windows the TLS storage for locales needs to be initialized before we create
+// the standard streams, otherwise it may not be alive during program termination
+// when we flush the streams.
+static void force_locale_initialization() {
+#if defined(_LIBCPP_MSVCRT_LIKE)
+  static bool once = []() {
+    auto loc = newlocale(LC_ALL_MASK, "C", 0);
+    {
+        __libcpp_locale_guard g(loc); // forces initialization of locale TLS
+        ((void)g);
+    }
+    freelocale(loc);
+    return true;
+  }();
+  ((void)once);
+#endif
+}
+
+class DoIOSInit {
+public:
+	DoIOSInit();
+	~DoIOSInit();
+};
+
+DoIOSInit::DoIOSInit()
+{
+    force_locale_initialization();
+
+#ifndef _LIBCPP_HAS_NO_STDIN
+    istream* cin_ptr  = ::new(cin)  istream(::new(__cin)  __stdinbuf <char>(stdin, &mb_cin));
+    wistream* wcin_ptr  = ::new(wcin)  wistream(::new(__wcin)  __stdinbuf <wchar_t>(stdin, &mb_wcin));
+#endif
+#ifndef _LIBCPP_HAS_NO_STDOUT
+    ostream* cout_ptr = ::new(cout) ostream(::new(__cout) __stdoutbuf<char>(stdout, &mb_cout));
+    wostream* wcout_ptr = ::new(wcout) wostream(::new(__wcout) __stdoutbuf<wchar_t>(stdout, &mb_wcout));
+#endif
+    ostream* cerr_ptr = ::new(cerr) ostream(::new(__cerr) __stdoutbuf<char>(stderr, &mb_cerr));
+                        ::new(clog) ostream(cerr_ptr->rdbuf());
+    wostream* wcerr_ptr = ::new(wcerr) wostream(::new(__wcerr) __stdoutbuf<wchar_t>(stderr, &mb_wcerr));
+                          ::new(wclog) wostream(wcerr_ptr->rdbuf());
+
+#if !defined(_LIBCPP_HAS_NO_STDIN) && !defined(_LIBCPP_HAS_NO_STDOUT)
+    cin_ptr->tie(cout_ptr);
+    wcin_ptr->tie(wcout_ptr);
+#endif
+    _VSTD::unitbuf(*cerr_ptr);
+    _VSTD::unitbuf(*wcerr_ptr);
+#ifndef _LIBCPP_HAS_NO_STDOUT
+    cerr_ptr->tie(cout_ptr);
+    wcerr_ptr->tie(wcout_ptr);
+#endif
+}
+
+DoIOSInit::~DoIOSInit()
+{
+#ifndef _LIBCPP_HAS_NO_STDOUT
+    ostream* cout_ptr = reinterpret_cast<ostream*>(cout);
+    wostream* wcout_ptr = reinterpret_cast<wostream*>(wcout);
+    cout_ptr->flush();
+    wcout_ptr->flush();
+#endif
+
+    ostream* clog_ptr = reinterpret_cast<ostream*>(clog);
+    wostream* wclog_ptr = reinterpret_cast<wostream*>(wclog);
+    clog_ptr->flush();
+    wclog_ptr->flush();
+}
+
+ios_base::Init::Init()
+{
+    static DoIOSInit init_the_streams; // gets initialized once
+}
+
+ios_base::Init::~Init()
+{
+}
+
+_LIBCPP_END_NAMESPACE_STD