Tagging 17

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/tags/libcpp-17@128700 91177308-0d34-0410-b5e6-96231b3b80d8

include/__config

@@ -13,13 +13,6 @@
 
 #pragma GCC system_header
 
-#ifdef __MINGW32__
-#include <yvals.h>
-#undef _STD
-#undef _C2
-#define _LIBCPP_VISIBILITY_TAG 0
-#endif
-
 #define _LIBCPP_VERSION 1000
 
 #define _LIBCPP_ABI_VERSION 1
@@ -54,11 +47,6 @@
 # endif  // _BYTE_ORDER == _LITTLE_ENDIAN
 #endif  // __FreeBSD__
 
-#if !defined(_LIBCPP_LITTLE_ENDIAN) && (defined(__i386__) || defined(__x86_64__))
-#define _LIBCPP_LITTLE_ENDIAN 1
-#define _LIBCPP_BIG_ENDIAN    0
-#endif
-
 #if !defined(_LIBCPP_LITTLE_ENDIAN) || !defined(_LIBCPP_BIG_ENDIAN)
 # include <endian.h>
 # if __BYTE_ORDER == __LITTLE_ENDIAN
@@ -110,7 +98,7 @@ typedef __char32_t char32_t;
 #endif
 #endif
 
-#if !(__has_feature(cxx_exceptions)) || defined(__MINGW32__)
+#if !(__has_feature(cxx_exceptions))
 #define _LIBCPP_NO_EXCEPTIONS
 #endif
 
@@ -196,12 +184,10 @@ namespace std {
 #define _LIBCPP_HAS_NO_UNICODE_CHARS
 #define _LIBCPP_HAS_NO_VARIADICS
 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
-#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
 
 #else  // __GXX_EXPERIMENTAL_CXX0X__
 
 #define _LIBCPP_HAS_NO_TRAILING_RETURN
-#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
 
 #if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 3)
 #define _LIBCPP_HAS_NO_RVALUE_REFERENCES
@@ -221,6 +207,7 @@ namespace std {
 #endif  // !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 4)
 
 #if !(__GNUC__ >= 4 && __GNUC_MINOR__ >= 6)
+#define _LIBCPP_HAS_NO_ALWAYS_INLINE_VARIADICS
 #define _LIBCPP_HAS_NO_NULLPTR
 #endif
 

include/__locale

@@ -19,21 +19,7 @@
 #include <cstdint>
 #include <cctype>
 #include <locale.h>
-#ifdef __MINGW32__
-typedef _locale_t locale_t;
-
-#include <xlocinfo.h>
-#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 _M_ALL
-
-#else
 #include <xlocale.h>
-#endif
 
 #pragma GCC system_header
 
@@ -316,7 +302,7 @@ locale::operator()(const basic_string<_CharT, _Traits, _Allocator>& __x,
 class _LIBCPP_VISIBLE ctype_base
 {
 public:
-    typedef std::uint32_t mask;
+    typedef __uint32_t mask;
 
 #if __APPLE__
     static const mask space  = _CTYPE_S;
@@ -329,17 +315,6 @@ public:
     static const mask punct  = _CTYPE_P;
     static const mask xdigit = _CTYPE_X;
     static const mask blank  = _CTYPE_B;
-#elif defined(__MINGW32__)
-    static const mask space  = _SPACE;
-    static const mask print  = (_BLANK|_PUNCT|_ALPHA|_DIGIT);
-    static const mask cntrl  = _CONTROL;
-    static const mask upper  = _UPPER;
-    static const mask lower  = _LOWER;
-    static const mask alpha  = _ALPHA;
-    static const mask digit  = _DIGIT;
-    static const mask punct  = _PUNCT;
-    static const mask xdigit = _HEX;
-    static const mask blank  = _BLANK;
 #else  // __APPLE__
     static const mask space  = _ISspace;
     static const mask print  = _ISprint;
@@ -476,7 +451,7 @@ public:
     _LIBCPP_ALWAYS_INLINE
     bool is(mask __m, char_type __c) const
     {
-        return isascii(__c) ? (__tab_ ? __tab_[__c] & __m : _isctype(__c, __m)) : false;
+        return isascii(__c) ? __tab_[__c] & __m : false;
     }
 
     _LIBCPP_ALWAYS_INLINE

include/__mutex_base

@@ -14,35 +14,7 @@
 #include <__config>
 #include <chrono>
 #include <system_error>
-#ifdef __MINGW32__
-typedef unsigned pthread_t;
-typedef unsigned pthread_mutex_t;
-typedef unsigned pthread_mutexattr_t;
-typedef unsigned pthread_cond_t;
-typedef unsigned pthread_key_t;
-#define PTHREAD_MUTEX_INITIALIZER 0
-#define PTHREAD_COND_INITIALIZER 0
-#define PTHREAD_MUTEX_RECURSIVE 0
-#define pthread_mutex_init(a,b) (*(a) = 0, -1)
-#define pthread_mutex_destroy(a) (-1)
-#define pthread_mutex_lock(a) (-1)
-#define pthread_mutex_trylock(a) (-1)
-#define pthread_mutex_unlock(a) (-1)
-#define pthread_mutexattr_settype(a,b) (*(a) = (b), -1)
-#define pthread_mutexattr_init(a) (*(a) = 0, -1)
-#define pthread_mutexattr_destroy(a) (-1)
-#define pthread_self() (-1)
-#define pthread_equal(a,b) (0)
-#define pthread_getspecific(a) ((void*)0)
-#define pthread_cond_destroy(a) (-1)
-#define pthread_cond_signal(a) (-1)
-#define pthread_cond_broadcast(a) (-1)
-#define pthread_cond_wait(a,b) (-1)
-#define pthread_cond_timedwait(a,b,c) (-1)
-#define sched_yield() (-1)
-#else
 #include <pthread.h>
-#endif
 
 #pragma GCC system_header
 

include/__std_stream

@@ -288,12 +288,12 @@ __stdoutbuf<_CharT>::sync()
         __r = __cv_->unshift(__st_, __extbuf,
                                     __extbuf + sizeof(__extbuf),
                                     __extbe);
-        if (__r == codecvt_base::error)
-            return -1;
         size_t __nmemb = static_cast<size_t>(__extbe - __extbuf);
         if (fwrite(__extbuf, 1, __nmemb, __file_) != __nmemb)
             return -1;
     } while (__r == codecvt_base::partial);
+    if (__r == codecvt_base::error)
+        return -1;
     if (fflush(__file_))
         return -1;
     return 0;

include/__tree

@@ -769,7 +769,6 @@ public:
     typedef typename __alloc_traits::difference_type difference_type;
 
     typedef __tree_node<value_type, typename __alloc_traits::void_pointer> __node;
-    typedef __tree_node_base<typename __alloc_traits::void_pointer> __node_base;
     typedef typename __alloc_traits::template
 #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
             rebind_alloc<__node>
@@ -780,10 +779,10 @@ public:
     typedef allocator_traits<__node_allocator>       __node_traits;
     typedef typename __node_traits::pointer          __node_pointer;
     typedef typename __node_traits::const_pointer    __node_const_pointer;
-    typedef typename __node_base::pointer            __node_base_pointer;
-    typedef typename __node_base::const_pointer      __node_base_const_pointer;
+    typedef typename __node::base::pointer           __node_base_pointer;
+    typedef typename __node::base::const_pointer     __node_base_const_pointer;
 private:
-    typedef typename __node_base::base __end_node_t;
+    typedef typename __node::base::base __end_node_t;
     typedef typename pointer_traits<__node_pointer>::template
 #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
             rebind<__end_node_t>
@@ -997,19 +996,19 @@ public:
 
     __node_holder remove(const_iterator __p);
 private:
-    typename __node_base::pointer&
-        __find_leaf_low(typename __node_base::pointer& __parent, const value_type& __v);
-    typename __node_base::pointer&
-        __find_leaf_high(typename __node_base::pointer& __parent, const value_type& __v);
-    typename __node_base::pointer&
+    typename __node::base::pointer&
+        __find_leaf_low(typename __node::base::pointer& __parent, const value_type& __v);
+    typename __node::base::pointer&
+        __find_leaf_high(typename __node::base::pointer& __parent, const value_type& __v);
+    typename __node::base::pointer&
         __find_leaf(const_iterator __hint,
-                    typename __node_base::pointer& __parent, const value_type& __v);
+                    typename __node::base::pointer& __parent, const value_type& __v);
     template <class _Key>
-        typename __node_base::pointer&
-        __find_equal(typename __node_base::pointer& __parent, const _Key& __v);
+        typename __node::base::pointer&
+        __find_equal(typename __node::base::pointer& __parent, const _Key& __v);
     template <class _Key>
-        typename __node_base::pointer&
-        __find_equal(const_iterator __hint, typename __node_base::pointer& __parent,
+        typename __node::base::pointer&
+        __find_equal(const_iterator __hint, typename __node::base::pointer& __parent,
                      const _Key& __v);
 
 #if !defined(_LIBCPP_HAS_NO_RVALUE_REFERENCES) && !defined(_LIBCPP_HAS_NO_VARIADICS)
@@ -1411,8 +1410,8 @@ __tree<_Tp, _Compare, _Allocator>::clear()
 // Set __parent to parent of null leaf
 // Return reference to null leaf
 template <class _Tp, class _Compare, class _Allocator>
-typename __tree<_Tp, _Compare, _Allocator>::__node_base::pointer&
-__tree<_Tp, _Compare, _Allocator>::__find_leaf_low(typename __node_base::pointer& __parent,
+typename __tree<_Tp, _Compare, _Allocator>::__node::base::pointer&
+__tree<_Tp, _Compare, _Allocator>::__find_leaf_low(typename __node::base::pointer& __parent,
                                                    const value_type& __v)
 {
     __node_pointer __nd = __root();
@@ -1450,8 +1449,8 @@ __tree<_Tp, _Compare, _Allocator>::__find_leaf_low(typename __node_base::pointer
 // Set __parent to parent of null leaf
 // Return reference to null leaf
 template <class _Tp, class _Compare, class _Allocator>
-typename __tree<_Tp, _Compare, _Allocator>::__node_base::pointer&
-__tree<_Tp, _Compare, _Allocator>::__find_leaf_high(typename __node_base::pointer& __parent,
+typename __tree<_Tp, _Compare, _Allocator>::__node::base::pointer&
+__tree<_Tp, _Compare, _Allocator>::__find_leaf_high(typename __node::base::pointer& __parent,
                                                     const value_type& __v)
 {
     __node_pointer __nd = __root();
@@ -1492,9 +1491,9 @@ __tree<_Tp, _Compare, _Allocator>::__find_leaf_high(typename __node_base::pointe
 // Set __parent to parent of null leaf
 // Return reference to null leaf
 template <class _Tp, class _Compare, class _Allocator>
-typename __tree<_Tp, _Compare, _Allocator>::__node_base::pointer&
+typename __tree<_Tp, _Compare, _Allocator>::__node::base::pointer&
 __tree<_Tp, _Compare, _Allocator>::__find_leaf(const_iterator __hint,
-                                               typename __node_base::pointer& __parent,
+                                               typename __node::base::pointer& __parent,
                                                const value_type& __v)
 {
     if (__hint == end() || !value_comp()(*__hint, __v))  // check before
@@ -1528,8 +1527,8 @@ __tree<_Tp, _Compare, _Allocator>::__find_leaf(const_iterator __hint,
 // If __v exists, set parent to node of __v and return reference to node of __v
 template <class _Tp, class _Compare, class _Allocator>
 template <class _Key>
-typename __tree<_Tp, _Compare, _Allocator>::__node_base::pointer&
-__tree<_Tp, _Compare, _Allocator>::__find_equal(typename __node_base::pointer& __parent,
+typename __tree<_Tp, _Compare, _Allocator>::__node::base::pointer&
+__tree<_Tp, _Compare, _Allocator>::__find_equal(typename __node::base::pointer& __parent,
                                                 const _Key& __v)
 {
     __node_pointer __nd = __root();
@@ -1577,9 +1576,9 @@ __tree<_Tp, _Compare, _Allocator>::__find_equal(typename __node_base::pointer& _
 // If __v exists, set parent to node of __v and return reference to node of __v
 template <class _Tp, class _Compare, class _Allocator>
 template <class _Key>
-typename __tree<_Tp, _Compare, _Allocator>::__node_base::pointer&
+typename __tree<_Tp, _Compare, _Allocator>::__node::base::pointer&
 __tree<_Tp, _Compare, _Allocator>::__find_equal(const_iterator __hint,
-                                                typename __node_base::pointer& __parent,
+                                                typename __node::base::pointer& __parent,
                                                 const _Key& __v)
 {
     if (__hint == end() || value_comp()(__v, *__hint))  // check before
@@ -1609,7 +1608,7 @@ __tree<_Tp, _Compare, _Allocator>::__find_equal(const_iterator __hint,
         const_iterator __next = _STD::next(__hint);
         if (__next == end() || value_comp()(__v, *__next))
         {
-            // *__hint < __v < *_STD::next(__hint)
+            // *__hint < __v < *next(__hint)
             if (__hint.__ptr_->__right_ == nullptr)
             {
                 __parent = const_cast<__node_pointer&>(__hint.__ptr_);

include/cerrno

@@ -30,43 +30,25 @@ Macros:
 
 #if !defined(EOWNERDEAD) || !defined(ENOTRECOVERABLE)
 
-#ifdef ELAST
-
 const int __elast1 = ELAST+1;
 const int __elast2 = ELAST+2;
-
-#else
-
-const int __elast1 = 104;
-const int __elast2 = 105;
-
-#endif
+#undef ELAST
 
 #ifdef ENOTRECOVERABLE
 
 #define EOWNERDEAD __elast1
-
-#ifdef ELAST
-#undef ELAST
 #define ELAST EOWNERDEAD
-#endif
 
 #elif defined(EOWNERDEAD)
 
 #define ENOTRECOVERABLE __elast1
-#ifdef ELAST
-#undef ELAST
 #define ELAST ENOTRECOVERABLE
-#endif
 
 #else  // defined(EOWNERDEAD)
 
 #define EOWNERDEAD __elast1
 #define ENOTRECOVERABLE __elast2
-#ifdef ELAST
-#undef ELAST
 #define ELAST ENOTRECOVERABLE
-#endif
 
 #endif  // defined(EOWNERDEAD)
 

include/deque

@@ -1787,7 +1787,7 @@ deque<_Tp, _Allocator>::insert(const_iterator __p, const value_type& __v)
             --__base::__start_;
             ++__base::size();
             if (__pos > 1)
-                __b = __move_and_check(_STD::next(__b), __b + __pos, __b, __vt);
+                __b = __move_and_check(next(__b), __b + __pos, __b, __vt);
             *__b = *__vt;
         }
     }
@@ -1847,7 +1847,7 @@ deque<_Tp, _Allocator>::insert(const_iterator __p, value_type&& __v)
             --__base::__start_;
             ++__base::size();
             if (__pos > 1)
-                __b = _STD::move(_STD::next(__b), __b + __pos, __b);
+                __b = _STD::move(next(__b), __b + __pos, __b);
             *__b = _STD::move(__v);
         }
     }
@@ -1905,7 +1905,7 @@ deque<_Tp, _Allocator>::emplace(const_iterator __p, _Args&&... __args)
             --__base::__start_;
             ++__base::size();
             if (__pos > 1)
-                __b = _STD::move(_STD::next(__b), __b + __pos, __b);
+                __b = _STD::move(next(__b), __b + __pos, __b);
             *__b = value_type(_STD::forward<_Args>(__args)...);
         }
     }
@@ -2621,7 +2621,7 @@ deque<_Tp, _Allocator>::erase(const_iterator __f)
     }
     else
     {   // erase from back
-        iterator __i = _STD::move(_STD::next(__p), __base::end(), __p);
+        iterator __i = _STD::move(next(__p), __base::end(), __p);
         __alloc_traits::destroy(__a, _STD::addressof(*__i));
         --__base::size();
         if (__back_spare() >= 2 * __base::__block_size)

include/fstream

@@ -173,11 +173,6 @@ typedef basic_fstream<wchar_t> wfstream;
 
 #pragma GCC system_header
 
-#ifdef _WIN32
-#define fseeko fseek
-#define ftello ftell
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template <class _CharT, class _Traits>

include/locale

@@ -186,10 +186,7 @@ template <class charT> class messages_byname;
 #endif
 #include <cstdlib>
 #include <ctime>
-
-#ifndef _WIN32
 #include <nl_types.h>
-#endif
 
 #pragma GCC system_header
 
@@ -306,14 +303,7 @@ __nolocale_asprintf(char** __ret,
 {
     va_list __ap;
     va_start(__ap, __format);
-	int __result;
-#ifdef _WIN32
-	*__ret = (char*)malloc(4096);
-	__result = vsprintf(*__ret, __format, __ap);
-	*__ret = (char*)realloc(*__ret, __result + 1);
-#else
-	__result = vasprintf(__ret, __format, __ap);
-#endif
+    int __result = vasprintf(__ret, __format, __ap);
     va_end(__ap);
     return __result;
 }
@@ -758,12 +748,7 @@ __num_get_signed_integral(const char* __a, const char* __a_end,
         int __save_errno = errno;
         errno = 0;
         char *__p2;
-        long long __ll;
-#ifdef _WIN32
-        __ll = _strtoi64_l(__a, &__p2, __base, 0);
-#else
-        __ll = strtoll_l(__a, &__p2, __base, 0);
-#endif
+        long long __ll = strtoll_l(__a, &__p2, __base, 0);
         int __current_errno = errno;
         if (__current_errno == 0)
             errno = __save_errno;
@@ -803,12 +788,7 @@ __num_get_unsigned_integral(const char* __a, const char* __a_end,
         int __save_errno = errno;
         errno = 0;
         char *__p2;
-        unsigned long long __ll;
-#ifdef _WIN32
-        __ll = _strtoui64_l(__a, &__p2, __base, 0);
-#else
-        __ll = strtoull_l(__a, &__p2, __base, 0);
-#endif
+        unsigned long long __ll = strtoull_l(__a, &__p2, __base, 0);
         int __current_errno = errno;
         if (__current_errno == 0)
             errno = __save_errno;
@@ -836,13 +816,7 @@ __num_get_float(const char* __a, const char* __a_end, ios_base::iostate& __err)
     if (__a != __a_end)
     {
         char *__p2;
-        long double __ld;
-#ifdef _WIN32
-        // Win32 does not use "long double".
-        __ld = _strtod_l(__a, &__p2, 0);
-#else
-        __ld = strtold_l(__a, &__p2, 0);
-#endif
+        long double __ld = strtold_l(__a, &__p2, 0);
         if (__p2 != __a_end)
         {
             __err = ios_base::failbit;
@@ -1702,17 +1676,11 @@ num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 template <class _CharT, class _OutputIterator>
 _OutputIterator
 num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
-                                         char_type __fl, long double __lv) const
+                                         char_type __fl, long double __v) const
 {
     // Stage 1 - Get number in narrow char
     char __fmt[8] = {'%', 0};
-#ifdef _WIN32
-    const char* __len = "";
-    double __v = __lv;
-#else
     const char* __len = "L";
-    long double __v = __lv;
-#endif
     bool __specify_precision = this->__format_float(__fmt+1, __len, __iob.flags());
     const unsigned __nbuf = 30;
     char __nar[__nbuf];
@@ -2378,12 +2346,6 @@ time_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
         __b = get(__b, __e, __iob, __err, __tm, __fmt, __fmt + sizeof(__fmt)/sizeof(__fmt[0]));
         }
         break;
-    case 'F':
-        {
-        const char_type __fmt[] = {'%', 'Y', '-', '%', 'm', '-', '%', 'd'};
-        __b = get(__b, __e, __iob, __err, __tm, __fmt, __fmt + sizeof(__fmt)/sizeof(__fmt[0]));
-        }
-        break;
     case 'H':
         __get_hour(__tm->tm_hour, __b, __e, __err, __ct);
         break;
@@ -3597,14 +3559,10 @@ template <class _CharT>
 typename messages<_CharT>::catalog
 messages<_CharT>::do_open(const basic_string<char>& __nm, const locale&) const
 {
-#ifdef __MINGW32__
-    return -1;
-#else
     catalog __cat = reinterpret_cast<catalog>(catopen(__nm.c_str(), NL_CAT_LOCALE));
     if (__cat != -1)
         __cat = static_cast<catalog>((static_cast<size_t>(__cat) >> 1));
     return __cat;
-#endif
 }
 
 template <class _CharT>
@@ -3612,10 +3570,6 @@ typename messages<_CharT>::string_type
 messages<_CharT>::do_get(catalog __c, int __set, int __msgid,
                          const string_type& __dflt) const
 {
-#ifdef __MINGW32__
-    string_type __w;
-	return __w;
-#else
     string __ndflt;
     __narrow_to_utf8<sizeof(char_type)*__CHAR_BIT__>()(back_inserter(__ndflt),
                                                        __dflt.c_str(),
@@ -3628,19 +3582,16 @@ messages<_CharT>::do_get(catalog __c, int __set, int __msgid,
     __widen_from_utf8<sizeof(char_type)*__CHAR_BIT__>()(back_inserter(__w),
                                                         __n, __n + strlen(__n));
     return __w;
-#endif
 }
 
 template <class _CharT>
 void
 messages<_CharT>::do_close(catalog __c) const
 {
-#ifndef __MINGW32__
     if (__c != -1)
         __c <<= 1;
     nl_catd __cat = reinterpret_cast<nl_catd>(__c);
     catclose(__cat);
-#endif
 }
 
 extern template class messages<char>;

include/map

@@ -567,9 +567,9 @@ public:
     typedef const value_type&                                    reference;
     typedef typename __pointer_traits::template
 #ifndef _LIBCPP_HAS_NO_TEMPLATE_ALIASES
-            rebind<const value_type>
+            rebind<value_type>
 #else
-            rebind<const value_type>::other
+            rebind<value_type>::other
 #endif
                                                                  pointer;
 

include/new

@@ -90,18 +90,6 @@ _LIBCPP_VISIBLE new_handler get_new_handler() throw();
 
 }  // std
 
-#if __APPLE__
-    #include <cxxabi.h>
-    // On Darwin, there are two STL shared libraries and a lower level ABI
-    // shared libray.  The global holding the current new handler is
-    // in the ABI library and named __cxa_new_handler.
-    #define __new_handler __cxxabiapple::__cxa_new_handler
-#else  // __APPLE__
-    _LIBCPP_BEGIN_NAMESPACE_STD
-        extern ::std::new_handler __new_handler;
-    _LIBCPP_END_NAMESPACE_STD
-#endif
-
 _LIBCPP_VISIBLE void* operator new(std::size_t) throw(std::bad_alloc);
 _LIBCPP_VISIBLE void* operator new(std::size_t, const std::nothrow_t&) throw();
 _LIBCPP_VISIBLE void  operator delete(void*) throw();

include/ostream

@@ -1276,7 +1276,7 @@ operator<<(basic_ostream<_CharT, _Traits>& __os, shared_ptr<_Y> const& __p)
 
 template <class _CharT, class _Traits, size_t _Size>
 basic_ostream<_CharT, _Traits>&
-operator<<(basic_ostream<_CharT, _Traits>& __os, const bitset<_Size>& __x)
+operator<<(basic_ostream<_CharT, _Traits>& __os, bitset<_Size>& __x)
 {
     return __os << __x.template to_string<_CharT, _Traits>
                         (use_facet<ctype<_CharT> >(__os.getloc()).widen('0'),

include/random

@@ -1650,16 +1650,6 @@ class piecewise_linear_distribution
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
-// __is_seed_sequence
-
-template <class _Sseq, class _Engine>
-struct __is_seed_sequence
-{
-    static const bool value =
-              !is_convertible<_Sseq, typename _Engine::result_type>::value &&
-              !is_same<typename remove_cv<_Sseq>::type, _Engine>::value;
-};
-
 // linear_congruential_engine
 
 template <unsigned long long __a, unsigned long long __c,
@@ -1858,7 +1848,7 @@ public:
         {seed(__s);}
     template<class _Sseq> explicit linear_congruential_engine(_Sseq& __q,
         _LIBCPP_INLINE_VISIBILITY
-        typename enable_if<__is_seed_sequence<_Sseq, linear_congruential_engine>::value>::type* = 0)
+        typename enable_if<!is_convertible<_Sseq, result_type>::value>::type* = 0)
         {seed(__q);}
     _LIBCPP_INLINE_VISIBILITY
     void seed(result_type __s = default_seed)
@@ -1868,7 +1858,7 @@ public:
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, linear_congruential_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q)
@@ -2114,14 +2104,14 @@ public:
         {seed(__sd);}
     template<class _Sseq> explicit mersenne_twister_engine(_Sseq& __q,
         _LIBCPP_INLINE_VISIBILITY
-        typename enable_if<__is_seed_sequence<_Sseq, mersenne_twister_engine>::value>::type* = 0)
+        typename enable_if<!is_convertible<_Sseq, result_type>::value>::type* = 0)
         {seed(__q);}
     void seed(result_type __sd = default_seed);
     template<class _Sseq>
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, mersenne_twister_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q)
@@ -2483,7 +2473,7 @@ public:
         {seed(__sd);}
     template<class _Sseq> explicit subtract_with_carry_engine(_Sseq& __q,
         _LIBCPP_INLINE_VISIBILITY
-        typename enable_if<__is_seed_sequence<_Sseq, subtract_with_carry_engine>::value>::type* = 0)
+        typename enable_if<!is_convertible<_Sseq, result_type>::value>::type* = 0)
         {seed(__q);}
     _LIBCPP_INLINE_VISIBILITY
     void seed(result_type __sd = default_seed)
@@ -2492,7 +2482,7 @@ public:
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, subtract_with_carry_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q)
@@ -2751,7 +2741,7 @@ public:
     template<class _Sseq>
         _LIBCPP_INLINE_VISIBILITY
         explicit discard_block_engine(_Sseq& __q,
-        typename enable_if<__is_seed_sequence<_Sseq, discard_block_engine>::value &&
+        typename enable_if<!is_convertible<_Sseq, result_type>::value &&
                            !is_convertible<_Sseq, _Engine>::value>::type* = 0)
         : __e_(__q), __n_(0) {}
     _LIBCPP_INLINE_VISIBILITY
@@ -2762,7 +2752,7 @@ public:
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, discard_block_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q) {__e_.seed(__q); __n_ = 0;}
@@ -2950,7 +2940,7 @@ public:
     explicit independent_bits_engine(result_type __sd) : __e_(__sd) {}
     template<class _Sseq> explicit independent_bits_engine(_Sseq& __q,
         _LIBCPP_INLINE_VISIBILITY
-        typename enable_if<__is_seed_sequence<_Sseq, independent_bits_engine>::value &&
+        typename enable_if<!is_convertible<_Sseq, result_type>::value &&
                            !is_convertible<_Sseq, _Engine>::value>::type* = 0)
          : __e_(__q) {}
     _LIBCPP_INLINE_VISIBILITY
@@ -2961,7 +2951,7 @@ public:
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, independent_bits_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q) {__e_.seed(__q);}
@@ -3173,7 +3163,7 @@ public:
     explicit shuffle_order_engine(result_type __sd) : __e_(__sd) {__init();}
     template<class _Sseq> explicit shuffle_order_engine(_Sseq& __q,
         _LIBCPP_INLINE_VISIBILITY
-        typename enable_if<__is_seed_sequence<_Sseq, shuffle_order_engine>::value &&
+        typename enable_if<!is_convertible<_Sseq, result_type>::value &&
                            !is_convertible<_Sseq, _Engine>::value>::type* = 0)
          : __e_(__q) {__init();}
     _LIBCPP_INLINE_VISIBILITY
@@ -3184,7 +3174,7 @@ public:
         _LIBCPP_INLINE_VISIBILITY
         typename enable_if
         <
-            __is_seed_sequence<_Sseq, shuffle_order_engine>::value,
+            !is_convertible<_Sseq, result_type>::value,
             void
         >::type
         seed(_Sseq& __q) {__e_.seed(__q); __init();}
@@ -4477,7 +4467,7 @@ poisson_distribution<_IntType>::operator()(_URNG& __urng, const param_type& __pr
 {
     result_type __x;
     uniform_real_distribution<double> __urd;
-    if (__pr.__mean_ < 10)
+    if (__pr.__mean_ <= 10)
     {
          __x = 0;
         for (double __p = __urd(__urng); __p > __pr.__l_; ++__x)

include/regex

@@ -1264,7 +1264,6 @@ struct __state
     vector<pair<size_t, const _CharT*> > __loop_data_;
     const __node<_CharT>* __node_;
     regex_constants::match_flag_type __flags_;
-    bool __at_first_;
 
     _LIBCPP_INLINE_VISIBILITY
     __state()
@@ -1891,40 +1890,6 @@ __word_boundary<_CharT, _Traits>::__exec(__state& __s) const
     }
 }
 
-// __l_anchor
-
-template <class _CharT>
-class __l_anchor
-    : public __owns_one_state<_CharT>
-{
-    typedef __owns_one_state<_CharT> base;
-
-public:
-    typedef _STD::__state<_CharT> __state;
-
-    _LIBCPP_INLINE_VISIBILITY
-    __l_anchor(__node<_CharT>* __s)
-        : base(__s) {}
-
-    virtual void __exec(__state&) const;
-};
-
-template <class _CharT>
-void
-__l_anchor<_CharT>::__exec(__state& __s) const
-{
-    if (__s.__at_first_ && __s.__current_ == __s.__first_)
-    {
-        __s.__do_ = __state::__accept_but_not_consume;
-        __s.__node_ = this->first();
-    }
-    else
-    {
-        __s.__do_ = __state::__reject;
-        __s.__node_ = nullptr;
-    }
-}
-
 // __r_anchor
 
 template <class _CharT>
@@ -2429,6 +2394,7 @@ private:
     int __open_count_;
     shared_ptr<__empty_state<_CharT> > __start_;
     __owns_one_state<_CharT>* __end_;
+    bool __left_anchor_;
 
     typedef _STD::__state<_CharT> __state;
     typedef _STD::__node<_CharT> __node;
@@ -2450,17 +2416,17 @@ public:
     _LIBCPP_INLINE_VISIBILITY
     basic_regex()
         : __flags_(), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {}
     _LIBCPP_INLINE_VISIBILITY
     explicit basic_regex(const value_type* __p, flag_type __f = regex_constants::ECMAScript)
         : __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {__parse(__p, __p + __traits_.length(__p));}
     _LIBCPP_INLINE_VISIBILITY
     basic_regex(const value_type* __p, size_t __len, flag_type __f)
         : __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {__parse(__p, __p + __len);}
 //     basic_regex(const basic_regex&) = default;
 //     basic_regex(basic_regex&&) = default;
@@ -2469,20 +2435,20 @@ public:
         explicit basic_regex(const basic_string<value_type, _ST, _SA>& __p,
                              flag_type __f = regex_constants::ECMAScript)
         : __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {__parse(__p.begin(), __p.end());}
     template <class _ForwardIterator>
         _LIBCPP_INLINE_VISIBILITY
         basic_regex(_ForwardIterator __first, _ForwardIterator __last,
                     flag_type __f = regex_constants::ECMAScript)
         : __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {__parse(__first, __last);}
     _LIBCPP_INLINE_VISIBILITY
     basic_regex(initializer_list<value_type> __il,
                 flag_type __f = regex_constants::ECMAScript)
         : __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
-          __end_(0)
+          __end_(0), __left_anchor_(false)
         {__parse(__il.begin(), __il.end());}
 
 //    ~basic_regex() = default;
@@ -2540,6 +2506,7 @@ private:
         __loop_count_ = 0;
         __open_count_ = 0;
         __end_ = nullptr;
+        __left_anchor_ = false;
     }
 public:
 
@@ -2727,7 +2694,7 @@ private:
                           basic_string<_CharT>* __str = nullptr);
 
     _LIBCPP_INLINE_VISIBILITY
-    void __push_l_anchor();
+    void __push_l_anchor() {__left_anchor_ = true;}
     void __push_r_anchor();
     void __push_match_any();
     void __push_match_any_but_newline();
@@ -2765,22 +2732,22 @@ private:
         bool
         __match_at_start(const _CharT* __first, const _CharT* __last,
                  match_results<const _CharT*, _Allocator>& __m,
-                 regex_constants::match_flag_type __flags, bool) const;
+                 regex_constants::match_flag_type __flags) const;
     template <class _Allocator>
         bool
         __match_at_start_ecma(const _CharT* __first, const _CharT* __last,
                  match_results<const _CharT*, _Allocator>& __m,
-                 regex_constants::match_flag_type __flags, bool) const;
+                 regex_constants::match_flag_type __flags) const;
     template <class _Allocator>
         bool
         __match_at_start_posix_nosubs(const _CharT* __first, const _CharT* __last,
                  match_results<const _CharT*, _Allocator>& __m,
-                 regex_constants::match_flag_type __flags, bool) const;
+                 regex_constants::match_flag_type __flags) const;
     template <class _Allocator>
         bool
         __match_at_start_posix_subs(const _CharT* __first, const _CharT* __last,
                  match_results<const _CharT*, _Allocator>& __m,
-                 regex_constants::match_flag_type __flags, bool) const;
+                 regex_constants::match_flag_type __flags) const;
 
     template <class _B, class _A, class _C, class _T>
     friend
@@ -2842,6 +2809,7 @@ basic_regex<_CharT, _Traits>::swap(basic_regex& __r)
     swap(__open_count_, __r.__open_count_);
     swap(__start_, __r.__start_);
     swap(__end_, __r.__end_);
+    swap(__left_anchor_, __r.__left_anchor_);
 }
 
 template <class _CharT, class _Traits>
@@ -2882,9 +2850,7 @@ __lookahead<_CharT, _Traits>::__exec(__state& __s) const
     match_results<const _CharT*> __m;
     __m.__init(1 + __exp_.mark_count(), __s.__current_, __s.__last_);
     bool __matched = __exp_.__match_at_start_ecma(__s.__current_, __s.__last_,
-                                                  __m,
-                                                  __s.__flags_ | regex_constants::match_continuous,
-                                                  true);
+                                                  __m, __s.__flags_);
     if (__matched != __invert_)
     {
         __s.__do_ = __state::__accept_but_not_consume;
@@ -4121,6 +4087,7 @@ basic_regex<_CharT, _Traits>::__parse_assertion(_ForwardIterator __first,
                                 basic_regex __exp;
                                 __exp.__flags_ = __flags_;
                                 __temp = __exp.__parse(++__temp, __last);
+                                __exp.__push_l_anchor();
                                 __push_lookahead(_STD::move(__exp), false);
 #ifndef _LIBCPP_NO_EXCEPTIONS
                                 if (__temp == __last || *__temp != ')')
@@ -4134,6 +4101,7 @@ basic_regex<_CharT, _Traits>::__parse_assertion(_ForwardIterator __first,
                                 basic_regex __exp;
                                 __exp.__flags_ = __flags_;
                                 __temp = __exp.__parse(++__temp, __last);
+                                __exp.__push_l_anchor();
                                 __push_lookahead(_STD::move(__exp), true);
 #ifndef _LIBCPP_NO_EXCEPTIONS
                                 if (__temp == __last || *__temp != ')')
@@ -4608,14 +4576,6 @@ basic_regex<_CharT, _Traits>::__push_end_marked_subexpression(unsigned __sub)
     }
 }
 
-template <class _CharT, class _Traits>
-void
-basic_regex<_CharT, _Traits>::__push_l_anchor()
-{
-    __end_->first() = new __l_anchor<_CharT>(__end_->first());
-    __end_ = static_cast<__owns_one_state<_CharT>*>(__end_->first());
-}
-
 template <class _CharT, class _Traits>
 void
 basic_regex<_CharT, _Traits>::__push_r_anchor()
@@ -5481,7 +5441,7 @@ bool
 basic_regex<_CharT, _Traits>::__match_at_start_ecma(
         const _CharT* __first, const _CharT* __last,
         match_results<const _CharT*, _Allocator>& __m,
-        regex_constants::match_flag_type __flags, bool __at_first) const
+        regex_constants::match_flag_type __flags) const
 {
     vector<__state> __states;
     ptrdiff_t __j = 0;
@@ -5498,7 +5458,6 @@ basic_regex<_CharT, _Traits>::__match_at_start_ecma(
         __states.back().__loop_data_.resize(__loop_count());
         __states.back().__node_ = __st;
         __states.back().__flags_ = __flags;
-        __states.back().__at_first_ = __at_first;
         bool __matched = false;
         do
         {
@@ -5547,7 +5506,7 @@ bool
 basic_regex<_CharT, _Traits>::__match_at_start_posix_nosubs(
         const _CharT* __first, const _CharT* __last,
         match_results<const _CharT*, _Allocator>& __m,
-        regex_constants::match_flag_type __flags, bool __at_first) const
+        regex_constants::match_flag_type __flags) const
 {
     deque<__state> __states;
     ptrdiff_t __highest_j = 0;
@@ -5563,7 +5522,6 @@ basic_regex<_CharT, _Traits>::__match_at_start_posix_nosubs(
         __states.back().__loop_data_.resize(__loop_count());
         __states.back().__node_ = __st;
         __states.back().__flags_ = __flags;
-        __states.back().__at_first_ = __at_first;
         bool __matched = false;
         do
         {
@@ -5625,7 +5583,7 @@ bool
 basic_regex<_CharT, _Traits>::__match_at_start_posix_subs(
         const _CharT* __first, const _CharT* __last,
         match_results<const _CharT*, _Allocator>& __m,
-        regex_constants::match_flag_type __flags, bool __at_first) const
+        regex_constants::match_flag_type __flags) const
 {
     vector<__state> __states;
     __state __best_state;
@@ -5644,7 +5602,6 @@ basic_regex<_CharT, _Traits>::__match_at_start_posix_subs(
         __states.back().__loop_data_.resize(__loop_count());
         __states.back().__node_ = __st;
         __states.back().__flags_ = __flags;
-        __states.back().__at_first_ = __at_first;
         const _CharT* __current = __first;
         bool __matched = false;
         do
@@ -5710,13 +5667,13 @@ bool
 basic_regex<_CharT, _Traits>::__match_at_start(
         const _CharT* __first, const _CharT* __last,
         match_results<const _CharT*, _Allocator>& __m,
-        regex_constants::match_flag_type __flags, bool __at_first) const
+        regex_constants::match_flag_type __flags) const
 {
     if ((__flags_ & 0x1F0) == ECMAScript)
-        return __match_at_start_ecma(__first, __last, __m, __flags, __at_first);
+        return __match_at_start_ecma(__first, __last, __m, __flags);
     if (mark_count() == 0)
-        return __match_at_start_posix_nosubs(__first, __last, __m, __flags, __at_first);
-    return __match_at_start_posix_subs(__first, __last, __m, __flags, __at_first);
+        return __match_at_start_posix_nosubs(__first, __last, __m, __flags);
+    return __match_at_start_posix_subs(__first, __last, __m, __flags);
 }
 
 template <class _CharT, class _Traits>
@@ -5727,9 +5684,11 @@ basic_regex<_CharT, _Traits>::__search(
         match_results<const _CharT*, _Allocator>& __m,
         regex_constants::match_flag_type __flags) const
 {
+    if (__left_anchor_)
+        __flags |= regex_constants::match_continuous;
     __m.__init(1 + mark_count(), __first, __last,
                                     __flags & regex_constants::__no_update_pos);
-    if (__match_at_start(__first, __last, __m, __flags, true))
+    if (__match_at_start(__first, __last, __m, __flags))
     {
         __m.__prefix_.second = __m[0].first;
         __m.__prefix_.matched = __m.__prefix_.first != __m.__prefix_.second;
@@ -5743,7 +5702,7 @@ basic_regex<_CharT, _Traits>::__search(
         for (++__first; __first != __last; ++__first)
         {
             __m.__matches_.assign(__m.size(), __m.__unmatched_);
-            if (__match_at_start(__first, __last, __m, __flags, false))
+            if (__match_at_start(__first, __last, __m, __flags))
             {
                 __m.__prefix_.second = __m[0].first;
                 __m.__prefix_.matched = __m.__prefix_.first != __m.__prefix_.second;

include/system_error

@@ -115,22 +115,22 @@ public:
 
 enum class errc
 {
-//    address_family_not_supported,       // EAFNOSUPPORT
-//    address_in_use,                     // EADDRINUSE
-//    address_not_available,              // EADDRNOTAVAIL
-//    already_connected,                  // EISCONN
+    address_family_not_supported,       // EAFNOSUPPORT
+    address_in_use,                     // EADDRINUSE
+    address_not_available,              // EADDRNOTAVAIL
+    already_connected,                  // EISCONN
     argument_list_too_long,             // E2BIG
     argument_out_of_domain,             // EDOM
     bad_address,                        // EFAULT
     bad_file_descriptor,                // EBADF
-//    bad_message,                        // EBADMSG
+    bad_message,                        // EBADMSG
     broken_pipe,                        // EPIPE
-//    connection_aborted,                 // ECONNABORTED
-//    connection_already_in_progress,     // EALREADY
-//    connection_refused,                 // ECONNREFUSED
-//    connection_reset,                   // ECONNRESET
+    connection_aborted,                 // ECONNABORTED
+    connection_already_in_progress,     // EALREADY
+    connection_refused,                 // ECONNREFUSED
+    connection_reset,                   // ECONNRESET
     cross_device_link,                  // EXDEV
-//    destination_address_required,       // EDESTADDRREQ
+    destination_address_required,       // EDESTADDRREQ
     device_or_resource_busy,            // EBUSY
     directory_not_empty,                // ENOTEMPTY
     executable_format_error,            // ENOEXEC
@@ -138,8 +138,8 @@ enum class errc
     file_too_large,                     // EFBIG
     filename_too_long,                  // ENAMETOOLONG
     function_not_supported,             // ENOSYS
-//    host_unreachable,                   // EHOSTUNREACH
-//    identifier_removed,                 // EIDRM
+    host_unreachable,                   // EHOSTUNREACH
+    identifier_removed,                 // EIDRM
     illegal_byte_sequence,              // EILSEQ
     inappropriate_io_control_operation, // ENOTTY
     interrupted,                        // EINTR
@@ -147,16 +147,16 @@ enum class errc
     invalid_seek,                       // ESPIPE
     io_error,                           // EIO
     is_a_directory,                     // EISDIR
-//    message_size,                       // EMSGSIZE
-//    network_down,                       // ENETDOWN
-//    network_reset,                      // ENETRESET
-//    network_unreachable,                // ENETUNREACH
-//    no_buffer_space,                    // ENOBUFS
+    message_size,                       // EMSGSIZE
+    network_down,                       // ENETDOWN
+    network_reset,                      // ENETRESET
+    network_unreachable,                // ENETUNREACH
+    no_buffer_space,                    // ENOBUFS
     no_child_process,                   // ECHILD
-//    no_link,                            // ENOLINK
+    no_link,                            // ENOLINK
     no_lock_available,                  // ENOLCK
     no_message_available,               // ENODATA
-//    no_message,                         // ENOMSG
+    no_message,                         // ENOMSG
     no_protocol_option,                 // ENOPROTOOPT
     no_space_on_device,                 // ENOSPC
     no_stream_resources,                // ENOSR
@@ -246,42 +246,22 @@ struct _LIBCPP_VISIBLE is_error_condition_enum
 struct errc
 {
 enum _ {
-#ifdef EAFNOSUPPORT
     address_family_not_supported        = EAFNOSUPPORT,
-#endif
-#ifdef EADDRINUSE
     address_in_use                      = EADDRINUSE,
-#endif
-#ifdef EADDRNOTAVAIL
     address_not_available               = EADDRNOTAVAIL,
-#endif
-#ifdef EISCONN
     already_connected                   = EISCONN,
-#endif
     argument_list_too_long              = E2BIG,
     argument_out_of_domain              = EDOM,
     bad_address                         = EFAULT,
     bad_file_descriptor                 = EBADF,
-#ifdef EBADMSG
     bad_message                         = EBADMSG,
-#endif
     broken_pipe                         = EPIPE,
-#ifdef ECONNABORTED
     connection_aborted                  = ECONNABORTED,
-#endif
-#ifdef EALREADY
     connection_already_in_progress      = EALREADY,
-#endif
-#ifdef ECONNREFUSED
     connection_refused                  = ECONNREFUSED,
-#endif
-#ifdef ECONNRESET
     connection_reset                    = ECONNRESET,
-#endif
     cross_device_link                   = EXDEV,
-#ifdef EDESTADDRREQ
     destination_address_required        = EDESTADDRREQ,
-#endif
     device_or_resource_busy             = EBUSY,
     directory_not_empty                 = ENOTEMPTY,
     executable_format_error             = ENOEXEC,
@@ -289,12 +269,8 @@ enum _ {
     file_too_large                      = EFBIG,
     filename_too_long                   = ENAMETOOLONG,
     function_not_supported              = ENOSYS,
-#ifdef EHOSTUNREACH
     host_unreachable                    = EHOSTUNREACH,
-#endif
-#ifdef EIDRM
     identifier_removed                  = EIDRM,
-#endif
     illegal_byte_sequence               = EILSEQ,
     inappropriate_io_control_operation  = ENOTTY,
     interrupted                         = EINTR,
@@ -302,37 +278,21 @@ enum _ {
     invalid_seek                        = ESPIPE,
     io_error                            = EIO,
     is_a_directory                      = EISDIR,
-#ifdef EMSGSIZE
     message_size                        = EMSGSIZE,
-#endif
-#ifdef ENETDOWN
     network_down                        = ENETDOWN,
-#endif
-#ifdef ENETRESET
     network_reset                       = ENETRESET,
-#endif
-#ifdef ENETUNREACH
     network_unreachable                 = ENETUNREACH,
-#endif
-#ifdef ENOBUFS
     no_buffer_space                     = ENOBUFS,
-#endif
     no_child_process                    = ECHILD,
-#ifdef ENOLINK
     no_link                             = ENOLINK,
-#endif
     no_lock_available                   = ENOLCK,
-#ifdef ENOMSG
 #ifdef ENODATA
     no_message_available                = ENODATA,
 #else
     no_message_available                = ENOMSG,
 #endif
     no_message                          = ENOMSG,
-#endif
-#ifdef ENOPROTOOPT,
     no_protocol_option                  = ENOPROTOOPT,
-#endif
     no_space_on_device                  = ENOSPC,
 #ifdef ENOSR
     no_stream_resources                 = ENOSR,
@@ -344,42 +304,24 @@ enum _ {
     no_such_file_or_directory           = ENOENT,
     no_such_process                     = ESRCH,
     not_a_directory                     = ENOTDIR,
-#ifdef ENOTSOCK
     not_a_socket                        = ENOTSOCK,
-#endif
 #ifdef ENOSTR
     not_a_stream                        = ENOSTR,
 #else
     not_a_stream                        = EINVAL,
 #endif
-#ifdef ENOTCONN
     not_connected                       = ENOTCONN,
-#endif
     not_enough_memory                   = ENOMEM,
-#ifdef ENOTSUP
     not_supported                       = ENOTSUP,
-#endif
-#ifdef ECANCELED
     operation_canceled                  = ECANCELED,
-#endif
-#ifdef EINPROGRESS
     operation_in_progress               = EINPROGRESS,
-#endif
     operation_not_permitted             = EPERM,
-#ifdef EOPNOTSUPP
     operation_not_supported             = EOPNOTSUPP,
-#endif
-#ifdef EWOULDBLOCK
     operation_would_block               = EWOULDBLOCK,
-#endif
     owner_dead                          = EOWNERDEAD,
     permission_denied                   = EACCES,
-#ifdef EPROTO
     protocol_error                      = EPROTO,
-#endif
-#ifdef EPROTONOSUPPORT
     protocol_not_supported              = EPROTONOSUPPORT,
-#endif
     read_only_file_system               = EROFS,
     resource_deadlock_would_occur       = EDEADLK,
     resource_unavailable_try_again      = EAGAIN,
@@ -387,27 +329,17 @@ enum _ {
     state_not_recoverable               = ENOTRECOVERABLE,
 #ifdef ETIME
     stream_timeout                      = ETIME,
-#elif defined(ETIMEDOUT)
+#else
     stream_timeout                      = ETIMEDOUT,
 #endif
-#ifdef ETXTBSY
     text_file_busy                      = ETXTBSY,
-#endif
-#ifdef ETIMEDOUT
     timed_out                           = ETIMEDOUT,
-#endif
     too_many_files_open_in_system       = ENFILE,
     too_many_files_open                 = EMFILE,
     too_many_links                      = EMLINK,
-#ifdef ELOOP
     too_many_symbolic_link_levels       = ELOOP,
-#endif
-#ifdef EOVERFLOW
     value_too_large                     = EOVERFLOW,
-#endif
-#ifdef EPROTOTYPE
-    wrong_protocol_type                 = EPROTOTYPE,
-#endif
+    wrong_protocol_type                 = EPROTOTYPE
 };
 
     _ __v_;

include/thread

@@ -95,15 +95,7 @@ void sleep_for(const chrono::duration<Rep, Period>& rel_time);
 #include <system_error>
 #include <chrono>
 #include <__mutex_base>
-#ifdef __MINGW32__
-#define pthread_key_delete(a) (-1)
-#define pthread_join(a,b) (-1)
-#define pthread_detach(a) (-1)
-#define nanosleep(a,b) (-1)
-#define pthread_key_create(a,b) (-1)
-#else
 #include <pthread.h>
-#endif
 
 #pragma GCC system_header
 

include/utility

@@ -211,13 +211,6 @@ struct _LIBCPP_VISIBLE pair
     _LIBCPP_INLINE_VISIBILITY pair(const _T1& __x, const _T2& __y)
         : first(__x), second(__y) {}
 
-    template<class _U1, class _U2>
-        _LIBCPP_INLINE_VISIBILITY
-        pair(const pair<_U1, _U2>& __p,
-                 typename enable_if<is_convertible<_U1, _T1>::value &&
-                                    is_convertible<_U2, _T2>::value>::type* = 0)
-            : first(__p.first), second(__p.second) {}
-
 #ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
 
     template <class _U1, class _U2,
@@ -229,14 +222,6 @@ struct _LIBCPP_VISIBLE pair
               second(_STD::forward<_U2>(__u2))
             {}
 
-    template<class _U1, class _U2>
-        _LIBCPP_INLINE_VISIBILITY
-        pair(pair<_U1, _U2>&& __p,
-                 typename enable_if<is_convertible<_U1, _T1>::value &&
-                                    is_convertible<_U2, _T2>::value>::type* = 0)
-            : first(_STD::forward<_U1>(__p.first)),
-              second(_STD::forward<_U2>(__p.second)) {}
-
 #ifndef _LIBCPP_HAS_NO_VARIADICS
 
     template<class _Tuple,
@@ -276,6 +261,10 @@ struct _LIBCPP_VISIBLE pair
 
 #endif  // _LIBCPP_HAS_NO_VARIADICS
 
+#else  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+    template<class _U1, class _U2>
+        _LIBCPP_INLINE_VISIBILITY pair(const pair<_U1, _U2>& __p)
+            : first(__p.first), second(__p.second) {}
 #endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
     void _LIBCPP_INLINE_VISIBILITY swap(pair& __p) {_STD::swap(*this, __p);}
 private:

lib/CMakeLists.txt

@@ -32,7 +32,7 @@ append_if(libraries LIBCXX_HAS_GCC_S_LIB gcc_s)
 target_link_libraries(cxx ${libraries})
 
 # Setup flags.
-#append_if(compile_flags LIBCXX_HAS_FPIC_FLAG -fPIC)
+append_if(compile_flags LIBCXX_HAS_FPIC_FLAG -fPIC)
 append_if(link_flags LIBCXX_HAS_NODEFAULTLIBS_FLAG -nodefaultlibs)
 
 set_target_properties(cxx

src/chrono.cpp

@@ -116,16 +116,10 @@ steady_clock::now()
 steady_clock::time_point
 steady_clock::now()
 {
-#ifdef __MINGW32__
-    timeval tv;
-    gettimeofday(&tv, 0);
-    return time_point(seconds(tv.tv_sec) + microseconds(tv.tv_usec));
-#else
     struct timespec tp;
     if (0 != clock_gettime(CLOCK_MONOTONIC, &tp))
         __throw_system_error(errno, "clock_gettime(CLOCK_MONOTONIC) failed");
     return time_point(seconds(tp.tv_sec) + nanoseconds(tp.tv_nsec));
-#endif
 }
 #endif  // __APPLE__
 

src/condition_variable.cpp

@@ -57,10 +57,8 @@ condition_variable::__do_timed_wait(unique_lock<mutex>& lk,
     ts.tv_sec = static_cast<decltype(ts.tv_sec)>(s.count());
     ts.tv_nsec = static_cast<decltype(ts.tv_nsec)>((d - s).count());
     int ec = pthread_cond_timedwait(&__cv_, lk.mutex()->native_handle(), &ts);
-#ifndef __MINGW32__
     if (ec != 0 && ec != ETIMEDOUT)
         __throw_system_error(ec, "condition_variable timed_wait failed");
-#endif
 }
 
 void

src/exception.cpp

@@ -77,9 +77,6 @@ std::terminate()
 
 bool std::uncaught_exception() throw()
 {
-#ifdef _LIBCPP_NO_EXCEPTIONS
-    return false;
-#endif
 #if __APPLE__
     // on Darwin, there is a helper function so __cxa_get_globals is private
     return __cxxabiapple::__cxa_uncaught_exception();

src/locale.cpp

@@ -18,20 +18,7 @@
 #include "cstring"
 #include "cwctype"
 #include "__sso_allocator"
-#ifdef __MINGW32__
-#define iswctype_l _iswctype_l
-#define strcoll_l _strcoll_l
-#define strftime_l(a,b,c,d,e) strftime(a,b,c,d)
-#define strxfrm_l _strxfrm_l
-#define tolower_l _tolower_l
-#define toupper_l _toupper_l
-#define towlower_l _towlower_l
-#define towupper_l _towupper_l
-#define wcscoll_l _wcscoll_l
-#define wcsxfrm_l _wcsxfrm_l
-#else
 #include <langinfo.h>
-#endif
 #include <stdlib.h>
 
 _LIBCPP_BEGIN_NAMESPACE_STD
@@ -574,22 +561,6 @@ locale::id::__init()
 
 // template <> class collate_byname<char>
 
-static inline
-locale_t newlocale(int m, const char *l, locale_t b) {
-#if 0
-  return _create_locale(LC_ALL, l);
-#else
-  return 0;
-#endif
-}
-
-static inline
-void freelocale(locale_t p) {
-#if 0 // why!
-  _free_locale(p);
-#endif
-}
-
 collate_byname<char>::collate_byname(const char* n, size_t refs)
     : collate<char>(refs),
       __l(newlocale(LC_ALL_MASK, n, 0))
@@ -1388,9 +1359,6 @@ codecvt<wchar_t, char, mbstate_t>::do_unshift(state_type& st,
     for (extern_type* p = tmp; n; --n)  // write it
         *to_nxt++ = *p++;
     return ok;
-#elif defined(_WIN32)
-    to_nxt = to;
-    return noconv;
 #else
     return error;
 #endif

src/new.cpp

@@ -18,16 +18,110 @@
     // in the ABI library and named __cxa_new_handler.
     #define __new_handler __cxxabiapple::__cxa_new_handler
 #else  // __APPLE__
-    _LIBCPP_BEGIN_NAMESPACE_STD
-        ::std::new_handler __new_handler;
-    _LIBCPP_END_NAMESPACE_STD
+    static std::new_handler __new_handler;
 #endif
 
-#if 0
 // Implement all new and delete operators as weak definitions
 // in this shared library, so that they can be overriden by programs
 // that define non-weak copies of the functions.
+
+__attribute__((__weak__, __visibility__("default")))
+void *
+operator new(std::size_t size) throw (std::bad_alloc)
+{
+    if (size == 0)
+        size = 1;
+    void* p;
+    while ((p = ::malloc(size)) == 0)
+    {
+        // If malloc fails and there is a new_handler,
+        // call it to try free up memory.
+        std::new_handler nh = std::get_new_handler();
+        if (nh)
+            nh();
+        else
+#ifndef _LIBCPP_NO_EXCEPTIONS
+            throw std::bad_alloc();
+#else
+            break;
 #endif
+    }
+    return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new(size_t size, const std::nothrow_t&) throw()
+{
+    void* p = 0;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif  // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new(size);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif  // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new[](size_t size) throw (std::bad_alloc)
+{
+    return ::operator new(size);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void*
+operator new[](size_t size, const std::nothrow_t& nothrow) throw()
+{
+    void* p = 0;
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    try
+    {
+#endif  // _LIBCPP_NO_EXCEPTIONS
+        p = ::operator new[](size);
+#ifndef _LIBCPP_NO_EXCEPTIONS
+    }
+    catch (...)
+    {
+    }
+#endif  // _LIBCPP_NO_EXCEPTIONS
+    return p;
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete(void* ptr) throw ()
+{
+    if (ptr)
+        ::free(ptr);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete(void* ptr, const std::nothrow_t&) throw ()
+{
+    ::operator delete(ptr);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete[] (void* ptr) throw ()
+{
+    ::operator delete (ptr);
+}
+
+__attribute__((__weak__, __visibility__("default")))
+void
+operator delete[] (void* ptr, const std::nothrow_t&) throw ()
+{
+    ::operator delete[](ptr);
+}
 
 namespace std
 {

src/new_ZdaPv.cpp

@@ -1,7 +0,0 @@
-#include "new"
-
-void
-operator delete[] (void* ptr) throw ()
-{
-    ::operator delete (ptr);
-}

src/new_ZdaPvRKSt9nothrow_t.cpp

@@ -1,7 +0,0 @@
-#include "new"
-
-void
-operator delete[] (void* ptr, const std::nothrow_t&) throw ()
-{
-    ::operator delete[](ptr);
-}

src/new_ZdlPv.cpp

@@ -1,10 +0,0 @@
-#include <stdlib.h>
-
-#include "new"
-
-void
-operator delete(void* ptr) throw ()
-{
-    if (ptr)
-        ::free(ptr);
-}

src/new_ZdlPvRKSt9nothrow_t.cpp

@@ -1,7 +0,0 @@
-#include "new"
-
-void
-operator delete(void* ptr, const std::nothrow_t&) throw ()
-{
-    ::operator delete(ptr);
-}

src/new_Znay.cpp

@@ -1,7 +0,0 @@
-#include "new"
-
-void*
-operator new[](size_t size) throw (std::bad_alloc)
-{
-    return ::operator new(size);
-}

src/new_ZnayRKSt9nothrow_t.cpp

@@ -1,19 +0,0 @@
-#include "new"
-
-void*
-operator new[](size_t size, const std::nothrow_t& nothrow) throw()
-{
-    void* p = 0;
-#ifndef _LIBCPP_NO_EXCEPTIONS
-    try
-    {
-#endif  // _LIBCPP_NO_EXCEPTIONS
-        p = ::operator new[](size);
-#ifndef _LIBCPP_NO_EXCEPTIONS
-    }
-    catch (...)
-    {
-    }
-#endif  // _LIBCPP_NO_EXCEPTIONS
-    return p;
-}

src/new_Znwy.cpp

@@ -1,26 +0,0 @@
-#include <stdlib.h>
-
-#include "new"
-
-void *
-operator new(std::size_t size) throw (std::bad_alloc)
-{
-    if (size == 0)
-        size = 1;
-    void* p;
-    while ((p = ::malloc(size)) == 0)
-    {
-        // If malloc fails and there is a new_handler,
-        // call it to try free up memory.
-        std::new_handler nh = std::get_new_handler();
-        if (nh)
-            nh();
-        else
-#ifndef _LIBCPP_NO_EXCEPTIONS
-            throw std::bad_alloc();
-#else
-            break;
-#endif
-    }
-    return p;
-}

src/new_ZnwyRKSt9nothrow_t.cpp

@@ -1,19 +0,0 @@
-#include "new"
-
-void*
-operator new(size_t size, const std::nothrow_t&) throw()
-{
-    void* p = 0;
-#ifndef _LIBCPP_NO_EXCEPTIONS
-    try
-    {
-#endif  // _LIBCPP_NO_EXCEPTIONS
-        p = ::operator new(size);
-#ifndef _LIBCPP_NO_EXCEPTIONS
-    }
-    catch (...)
-    {
-    }
-#endif  // _LIBCPP_NO_EXCEPTIONS
-    return p;
-}

src/string.cpp

@@ -7,17 +7,11 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define MINGW_HAS_SECURE_API
-
 #include "string"
 #include "cstdlib"
 #include "cwchar"
 #include "cerrno"
 
-#ifdef _WIN32
-#define swprintf swprintf_s
-#endif
-
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 template class __basic_string_common<true>;

src/thread.cpp

@@ -12,10 +12,7 @@
 #include "vector"
 #include "future"
 #include <sys/types.h>
-#ifdef __MINGW32__
-#else
 #include <sys/sysctl.h>
-#endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 

test/_win32_seterrormode.fail.cpp

@@ -1,15 +0,0 @@
-#include <windows.h>
-
-namespace {
-
-  class Win32ctor {
-  public:
-    Win32ctor() {
-      SetErrorMode(SEM_FAILCRITICALERRORS |
-                   SEM_NOGPFAULTERRORBOX |
-                   SEM_NOOPENFILEERRORBOX);
-    }
-  };
-
-  static Win32ctor ctor;
-}