aboutsummaryrefslogtreecommitdiffstats
path: root/include/fstream
diff options
context:
space:
mode:
authorDimitry Andric <dim@FreeBSD.org>2018-07-28 11:07:56 +0000
committerDimitry Andric <dim@FreeBSD.org>2018-07-28 11:07:56 +0000
commitf36202620b428c45a1c8d91743727c9313424fb2 (patch)
tree14928d8970ba4890a6370aca4c38fc832d45f21f /include/fstream
parent0294ba5648d889e48ffee8ddad25944e258940ae (diff)
downloadsrc-f36202620b428c45a1c8d91743727c9313424fb2.tar.gz
src-f36202620b428c45a1c8d91743727c9313424fb2.zip
Vendor import of libc++ trunk r338150:vendor/libc++/libc++-trunk-r338150
Notes
Notes: svn path=/vendor/libc++/dist/; revision=336819 svn path=/vendor/libc++/libc++-trunk-r338150/; revision=336820; tag=vendor/libc++/libc++-trunk-r338150
Diffstat (limited to 'include/fstream')
-rw-r--r--include/fstream348
1 files changed, 314 insertions, 34 deletions
diff --git a/include/fstream b/include/fstream
index f57908c8dfaf..332b4747c1af 100644
--- a/include/fstream
+++ b/include/fstream
@@ -38,6 +38,7 @@ public:
bool is_open() const;
basic_filebuf* open(const char* s, ios_base::openmode mode);
basic_filebuf* open(const string& s, ios_base::openmode mode);
+ basic_filebuf* open(const filesystem::path& p, ios_base::openmode mode); // C++17
basic_filebuf* close();
protected:
@@ -77,6 +78,8 @@ public:
basic_ifstream();
explicit basic_ifstream(const char* s, ios_base::openmode mode = ios_base::in);
explicit basic_ifstream(const string& s, ios_base::openmode mode = ios_base::in);
+ explicit basic_ifstream(const filesystem::path& p,
+ ios_base::openmode mode = ios_base::in); // C++17
basic_ifstream(basic_ifstream&& rhs);
basic_ifstream& operator=(basic_ifstream&& rhs);
@@ -86,6 +89,8 @@ public:
bool is_open() const;
void open(const char* s, ios_base::openmode mode = ios_base::in);
void open(const string& s, ios_base::openmode mode = ios_base::in);
+ void open(const filesystem::path& s, ios_base::openmode mode = ios_base::in); // C++17
+
void close();
};
@@ -110,6 +115,8 @@ public:
basic_ofstream();
explicit basic_ofstream(const char* s, ios_base::openmode mode = ios_base::out);
explicit basic_ofstream(const string& s, ios_base::openmode mode = ios_base::out);
+ explicit basic_ofstream(const filesystem::path& p,
+ ios_base::openmode mode = ios_base::out); // C++17
basic_ofstream(basic_ofstream&& rhs);
basic_ofstream& operator=(basic_ofstream&& rhs);
@@ -119,6 +126,9 @@ public:
bool is_open() const;
void open(const char* s, ios_base::openmode mode = ios_base::out);
void open(const string& s, ios_base::openmode mode = ios_base::out);
+ void open(const filesystem::path& p,
+ ios_base::openmode mode = ios_base::out); // C++17
+
void close();
};
@@ -143,6 +153,8 @@ public:
basic_fstream();
explicit basic_fstream(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
explicit basic_fstream(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
+ explicit basic_fstream(const filesystem::path& p,
+ ios_base::openmode mode = ios_base::in|ios_base::out); C++17
basic_fstream(basic_fstream&& rhs);
basic_fstream& operator=(basic_fstream&& rhs);
@@ -152,6 +164,9 @@ public:
bool is_open() const;
void open(const char* s, ios_base::openmode mode = ios_base::in|ios_base::out);
void open(const string& s, ios_base::openmode mode = ios_base::in|ios_base::out);
+ void open(const filesystem::path& s,
+ ios_base::openmode mode = ios_base::in|ios_base::out); // C++17
+
void close();
};
@@ -170,6 +185,8 @@ typedef basic_fstream<wchar_t> wfstream;
#include <istream>
#include <__locale>
#include <cstdio>
+#include <cstdlib>
+#include <filesystem>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
@@ -212,12 +229,28 @@ public:
bool is_open() const;
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
basic_filebuf* open(const char* __s, ios_base::openmode __mode);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ basic_filebuf* open(const wchar_t* __s, ios_base::openmode __mode);
+#endif
_LIBCPP_INLINE_VISIBILITY
basic_filebuf* open(const string& __s, ios_base::openmode __mode);
+
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ basic_filebuf* open(const _VSTD_FS::path& __p, ios_base::openmode __mode) {
+ return open(__p.c_str(), __mode);
+ }
+#endif
+ _LIBCPP_INLINE_VISIBILITY
+ basic_filebuf* __open(int __fd, ios_base::openmode __mode);
#endif
basic_filebuf* close();
-protected:
+ _LIBCPP_INLINE_VISIBILITY
+ inline static const char*
+ __make_mdstring(ios_base::openmode __mode) _NOEXCEPT;
+
+ protected:
// 27.9.1.5 Overridden virtual functions:
virtual int_type underflow();
virtual int_type pbackfail(int_type __c = traits_type::eof());
@@ -231,25 +264,25 @@ protected:
virtual void imbue(const locale& __loc);
private:
- char* __extbuf_;
- const char* __extbufnext_;
- const char* __extbufend_;
- char __extbuf_min_[8];
- size_t __ebs_;
- char_type* __intbuf_;
- size_t __ibs_;
- FILE* __file_;
- const codecvt<char_type, char, state_type>* __cv_;
- state_type __st_;
- state_type __st_last_;
- ios_base::openmode __om_;
- ios_base::openmode __cm_;
- bool __owns_eb_;
- bool __owns_ib_;
- bool __always_noconv_;
-
- bool __read_mode();
- void __write_mode();
+ char* __extbuf_;
+ const char* __extbufnext_;
+ const char* __extbufend_;
+ char __extbuf_min_[8];
+ size_t __ebs_;
+ char_type* __intbuf_;
+ size_t __ibs_;
+ FILE* __file_;
+ const codecvt<char_type, char, state_type>* __cv_;
+ state_type __st_;
+ state_type __st_last_;
+ ios_base::openmode __om_;
+ ios_base::openmode __cm_;
+ bool __owns_eb_;
+ bool __owns_ib_;
+ bool __always_noconv_;
+
+ bool __read_mode();
+ void __write_mode();
};
template <class _CharT, class _Traits>
@@ -470,6 +503,46 @@ basic_filebuf<_CharT, _Traits>::is_open() const
return __file_ != 0;
}
+template <class _CharT, class _Traits>
+const char* basic_filebuf<_CharT, _Traits>::__make_mdstring(
+ ios_base::openmode __mode) _NOEXCEPT {
+ switch (__mode & ~ios_base::ate) {
+ case ios_base::out:
+ case ios_base::out | ios_base::trunc:
+ return "w";
+ case ios_base::out | ios_base::app:
+ case ios_base::app:
+ return "a";
+ case ios_base::in:
+ return "r";
+ case ios_base::in | ios_base::out:
+ return "r+";
+ case ios_base::in | ios_base::out | ios_base::trunc:
+ return "w+";
+ case ios_base::in | ios_base::out | ios_base::app:
+ case ios_base::in | ios_base::app:
+ return "a+";
+ case ios_base::out | ios_base::binary:
+ case ios_base::out | ios_base::trunc | ios_base::binary:
+ return "wb";
+ case ios_base::out | ios_base::app | ios_base::binary:
+ case ios_base::app | ios_base::binary:
+ return "ab";
+ case ios_base::in | ios_base::binary:
+ return "rb";
+ case ios_base::in | ios_base::out | ios_base::binary:
+ return "r+b";
+ case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary:
+ return "w+b";
+ case ios_base::in | ios_base::out | ios_base::app | ios_base::binary:
+ case ios_base::in | ios_base::app | ios_base::binary:
+ return "a+b";
+ default:
+ return nullptr;
+ }
+ _LIBCPP_UNREACHABLE();
+}
+
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
template <class _CharT, class _Traits>
basic_filebuf<_CharT, _Traits>*
@@ -478,51 +551,104 @@ basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode)
basic_filebuf<_CharT, _Traits>* __rt = 0;
if (__file_ == 0)
{
+ if (const char* __mdstr = __make_mdstring(__mode)) {
__rt = this;
- const char* __mdstr;
+ __file_ = fopen(__s, __mdstr);
+ if (__file_) {
+ __om_ = __mode;
+ if (__mode & ios_base::ate) {
+ if (fseek(__file_, 0, SEEK_END)) {
+ fclose(__file_);
+ __file_ = 0;
+ __rt = 0;
+ }
+ }
+ } else
+ __rt = 0;
+ }
+ }
+ return __rt;
+}
+
+template <class _CharT, class _Traits>
+_LIBCPP_INLINE_VISIBILITY basic_filebuf<_CharT, _Traits>*
+basic_filebuf<_CharT, _Traits>::__open(int __fd, ios_base::openmode __mode) {
+ basic_filebuf<_CharT, _Traits>* __rt = 0;
+ if (__file_ == 0) {
+ if (const char* __mdstr = __make_mdstring(__mode)) {
+ __rt = this;
+ __file_ = fdopen(__fd, __mdstr);
+ if (__file_) {
+ __om_ = __mode;
+ if (__mode & ios_base::ate) {
+ if (fseek(__file_, 0, SEEK_END)) {
+ fclose(__file_);
+ __file_ = 0;
+ __rt = 0;
+ }
+ }
+ } else
+ __rt = 0;
+ }
+ }
+ return __rt;
+}
+
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+// This is basically the same as the char* overload except that it uses _wfopen
+// and long mode strings.
+template <class _CharT, class _Traits>
+basic_filebuf<_CharT, _Traits>*
+basic_filebuf<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode)
+{
+ basic_filebuf<_CharT, _Traits>* __rt = 0;
+ if (__file_ == 0)
+ {
+ __rt = this;
+ const wchar_t* __mdstr;
switch (__mode & ~ios_base::ate)
{
case ios_base::out:
case ios_base::out | ios_base::trunc:
- __mdstr = "w";
+ __mdstr = L"w";
break;
case ios_base::out | ios_base::app:
case ios_base::app:
- __mdstr = "a";
+ __mdstr = L"a";
break;
case ios_base::in:
- __mdstr = "r";
+ __mdstr = L"r";
break;
case ios_base::in | ios_base::out:
- __mdstr = "r+";
+ __mdstr = L"r+";
break;
case ios_base::in | ios_base::out | ios_base::trunc:
- __mdstr = "w+";
+ __mdstr = L"w+";
break;
case ios_base::in | ios_base::out | ios_base::app:
case ios_base::in | ios_base::app:
- __mdstr = "a+";
+ __mdstr = L"a+";
break;
case ios_base::out | ios_base::binary:
case ios_base::out | ios_base::trunc | ios_base::binary:
- __mdstr = "wb";
+ __mdstr = L"wb";
break;
case ios_base::out | ios_base::app | ios_base::binary:
case ios_base::app | ios_base::binary:
- __mdstr = "ab";
+ __mdstr = L"ab";
break;
case ios_base::in | ios_base::binary:
- __mdstr = "rb";
+ __mdstr = L"rb";
break;
case ios_base::in | ios_base::out | ios_base::binary:
- __mdstr = "r+b";
+ __mdstr = L"r+b";
break;
case ios_base::in | ios_base::out | ios_base::trunc | ios_base::binary:
- __mdstr = "w+b";
+ __mdstr = L"w+b";
break;
case ios_base::in | ios_base::out | ios_base::app | ios_base::binary:
case ios_base::in | ios_base::app | ios_base::binary:
- __mdstr = "a+b";
+ __mdstr = L"a+b";
break;
default:
__rt = 0;
@@ -530,7 +656,7 @@ basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode)
}
if (__rt)
{
- __file_ = fopen(__s, __mdstr);
+ __file_ = _wfopen(__s, __mdstr);
if (__file_)
{
__om_ = __mode;
@@ -550,6 +676,7 @@ basic_filebuf<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode)
}
return __rt;
}
+#endif
template <class _CharT, class _Traits>
inline
@@ -1017,8 +1144,17 @@ public:
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
_LIBCPP_INLINE_VISIBILITY
explicit basic_ifstream(const char* __s, ios_base::openmode __mode = ios_base::in);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_ifstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in);
+#endif
_LIBCPP_INLINE_VISIBILITY
explicit basic_ifstream(const string& __s, ios_base::openmode __mode = ios_base::in);
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_ifstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in)
+ : basic_ifstream(__p.c_str(), __mode) {}
+#endif // _LIBCPP_STD_VER >= 17
#endif
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
@@ -1036,7 +1172,20 @@ public:
bool is_open() const;
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
void open(const char* __s, ios_base::openmode __mode = ios_base::in);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in);
+#endif
void open(const string& __s, ios_base::openmode __mode = ios_base::in);
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ void open(const filesystem::path& __p,
+ ios_base::openmode __mode = ios_base::in) {
+ return open(__p.c_str(), __mode);
+ }
+#endif // _LIBCPP_STD_VER >= 17
+
+ _LIBCPP_INLINE_VISIBILITY
+ void __open(int __fd, ios_base::openmode __mode);
#endif
_LIBCPP_INLINE_VISIBILITY
void close();
@@ -1062,6 +1211,17 @@ basic_ifstream<_CharT, _Traits>::basic_ifstream(const char* __s, ios_base::openm
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+inline
+basic_ifstream<_CharT, _Traits>::basic_ifstream(const wchar_t* __s, ios_base::openmode __mode)
+ : basic_istream<char_type, traits_type>(&__sb_)
+{
+ if (__sb_.open(__s, __mode | ios_base::in) == 0)
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
inline
basic_ifstream<_CharT, _Traits>::basic_ifstream(const string& __s, ios_base::openmode __mode)
@@ -1139,6 +1299,18 @@ basic_ifstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+void
+basic_ifstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode)
+{
+ if (__sb_.open(__s, __mode | ios_base::in))
+ this->clear();
+ else
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
void
basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode)
@@ -1148,6 +1320,15 @@ basic_ifstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mo
else
this->setstate(ios_base::failbit);
}
+
+template <class _CharT, class _Traits>
+void basic_ifstream<_CharT, _Traits>::__open(int __fd,
+ ios_base::openmode __mode) {
+ if (__sb_.__open(__fd, __mode | ios_base::in))
+ this->clear();
+ else
+ this->setstate(ios_base::failbit);
+}
#endif
template <class _CharT, class _Traits>
@@ -1176,8 +1357,19 @@ public:
basic_ofstream();
_LIBCPP_INLINE_VISIBILITY
explicit basic_ofstream(const char* __s, ios_base::openmode __mode = ios_base::out);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_ofstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::out);
+#endif
_LIBCPP_INLINE_VISIBILITY
explicit basic_ofstream(const string& __s, ios_base::openmode __mode = ios_base::out);
+
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_ofstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out)
+ : basic_ofstream(__p.c_str(), __mode) {}
+#endif // _LIBCPP_STD_VER >= 17
+
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
basic_ofstream(basic_ofstream&& __rhs);
@@ -1194,7 +1386,19 @@ public:
bool is_open() const;
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
void open(const char* __s, ios_base::openmode __mode = ios_base::out);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::out);
+#endif
void open(const string& __s, ios_base::openmode __mode = ios_base::out);
+
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::out)
+ { return open(__p.c_str(), __mode); }
+#endif // _LIBCPP_STD_VER >= 17
+
+ _LIBCPP_INLINE_VISIBILITY
+ void __open(int __fd, ios_base::openmode __mode);
#endif
_LIBCPP_INLINE_VISIBILITY
void close();
@@ -1220,6 +1424,17 @@ basic_ofstream<_CharT, _Traits>::basic_ofstream(const char* __s, ios_base::openm
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+inline
+basic_ofstream<_CharT, _Traits>::basic_ofstream(const wchar_t* __s, ios_base::openmode __mode)
+ : basic_ostream<char_type, traits_type>(&__sb_)
+{
+ if (__sb_.open(__s, __mode | ios_base::out) == 0)
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
inline
basic_ofstream<_CharT, _Traits>::basic_ofstream(const string& __s, ios_base::openmode __mode)
@@ -1297,6 +1512,18 @@ basic_ofstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+void
+basic_ofstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode)
+{
+ if (__sb_.open(__s, __mode | ios_base::out))
+ this->clear();
+ else
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
void
basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode)
@@ -1306,6 +1533,15 @@ basic_ofstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mo
else
this->setstate(ios_base::failbit);
}
+
+template <class _CharT, class _Traits>
+void basic_ofstream<_CharT, _Traits>::__open(int __fd,
+ ios_base::openmode __mode) {
+ if (__sb_.__open(__fd, __mode | ios_base::out))
+ this->clear();
+ else
+ this->setstate(ios_base::failbit);
+}
#endif
template <class _CharT, class _Traits>
@@ -1335,8 +1571,19 @@ public:
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
_LIBCPP_INLINE_VISIBILITY
explicit basic_fstream(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_fstream(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+#endif
_LIBCPP_INLINE_VISIBILITY
explicit basic_fstream(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ explicit basic_fstream(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in | ios_base::out)
+ : basic_fstream(__p.c_str(), __mode) {}
+#endif // _LIBCPP_STD_VER >= 17
+
#endif
#ifndef _LIBCPP_CXX03_LANG
_LIBCPP_INLINE_VISIBILITY
@@ -1354,7 +1601,17 @@ public:
bool is_open() const;
#ifndef _LIBCPP_HAS_NO_GLOBAL_FILESYSTEM_NAMESPACE
void open(const char* __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+ void open(const wchar_t* __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+#endif
void open(const string& __s, ios_base::openmode __mode = ios_base::in | ios_base::out);
+
+#if _LIBCPP_STD_VER >= 17
+ _LIBCPP_INLINE_VISIBILITY
+ void open(const filesystem::path& __p, ios_base::openmode __mode = ios_base::in|ios_base::out)
+ { return open(__p.c_str(), __mode); }
+#endif // _LIBCPP_STD_VER >= 17
+
#endif
_LIBCPP_INLINE_VISIBILITY
void close();
@@ -1380,6 +1637,17 @@ basic_fstream<_CharT, _Traits>::basic_fstream(const char* __s, ios_base::openmod
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+inline
+basic_fstream<_CharT, _Traits>::basic_fstream(const wchar_t* __s, ios_base::openmode __mode)
+ : basic_iostream<char_type, traits_type>(&__sb_)
+{
+ if (__sb_.open(__s, __mode) == 0)
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
inline
basic_fstream<_CharT, _Traits>::basic_fstream(const string& __s, ios_base::openmode __mode)
@@ -1457,6 +1725,18 @@ basic_fstream<_CharT, _Traits>::open(const char* __s, ios_base::openmode __mode)
this->setstate(ios_base::failbit);
}
+#ifdef _LIBCPP_HAS_OPEN_WITH_WCHAR
+template <class _CharT, class _Traits>
+void
+basic_fstream<_CharT, _Traits>::open(const wchar_t* __s, ios_base::openmode __mode)
+{
+ if (__sb_.open(__s, __mode))
+ this->clear();
+ else
+ this->setstate(ios_base::failbit);
+}
+#endif
+
template <class _CharT, class _Traits>
void
basic_fstream<_CharT, _Traits>::open(const string& __s, ios_base::openmode __mode)