commit 8dcd2987346f5129aa76f1e370a06baf596032e5
author Arthur O'Dwyer <arthur.j.odwyer@gmail.com> Tue Jun 15 12:47:05 2021 -0400
committer Copybara-Service <copybara-worker@google.com> Mon Jun 28 10:00:43 2021 -0700
tree 096b8204a36e23eed43675a949a9180d661b1f65
parent 7724952250c406ae34dd50317dcb7b921b5eba98

[libc++] Remove some _LIBCPP_CXX03_LANG from iostreams headers.

With the STL containers, I didn't enable move operations in C++03 mode
because that would change the overload resolution for things that today
are copy operations. With iostreams, though, the copy operations aren't
present at all, and so I see no problem with enabling move operations
even in (Clang's greatly extended) C++03 mode.

Clang's C++03 mode does not support delegating constructors.

Differential Revision: https://reviews.llvm.org/D104310

NOKEYCHECK=True
GitOrigin-RevId: a8d1182f661ccecd99efd4e543fddf3172c67a95

include/fstream

diff --git a/include/fstream b/include/fstream
index 09af0d9..c522b8a 100644
--- a/include/fstream
+++ b/include/fstream
@@ -219,16 +219,12 @@
 
     // 27.9.1.2 Constructors/destructor:
     basic_filebuf();
-#ifndef _LIBCPP_CXX03_LANG
     basic_filebuf(basic_filebuf&& __rhs);
-#endif
     virtual ~basic_filebuf();
 
     // 27.9.1.3 Assign/swap:
-#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_filebuf& operator=(basic_filebuf&& __rhs);
-#endif
     void swap(basic_filebuf& __rhs);
 
     // 27.9.1.4 Members:
@@ -318,8 +314,6 @@
     setbuf(nullptr, 4096);
 }
 
-#ifndef _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 basic_filebuf<_CharT, _Traits>::basic_filebuf(basic_filebuf&& __rhs)
     : basic_streambuf<_CharT, _Traits>(__rhs)
@@ -394,8 +388,6 @@
     return *this;
 }
 
-#endif // _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 basic_filebuf<_CharT, _Traits>::~basic_filebuf()
 {
@@ -1164,13 +1156,10 @@
       : basic_ifstream(__p.c_str(), __mode) {}
 #endif // _LIBCPP_STD_VER >= 17
 #endif
-#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_ifstream(basic_ifstream&& __rhs);
-
     _LIBCPP_INLINE_VISIBILITY
     basic_ifstream& operator=(basic_ifstream&& __rhs);
-#endif
     _LIBCPP_INLINE_VISIBILITY
     void swap(basic_ifstream& __rhs);
 
@@ -1240,8 +1229,6 @@
 }
 #endif
 
-#ifndef _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 basic_ifstream<_CharT, _Traits>::basic_ifstream(basic_ifstream&& __rhs)
@@ -1261,8 +1248,6 @@
     return *this;
 }
 
-#endif // _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 void
@@ -1379,13 +1364,10 @@
       : basic_ofstream(__p.c_str(), __mode) {}
 #endif // _LIBCPP_STD_VER >= 17
 
-#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_ofstream(basic_ofstream&& __rhs);
-
     _LIBCPP_INLINE_VISIBILITY
     basic_ofstream& operator=(basic_ofstream&& __rhs);
-#endif
     _LIBCPP_INLINE_VISIBILITY
     void swap(basic_ofstream& __rhs);
 
@@ -1454,8 +1436,6 @@
 }
 #endif
 
-#ifndef _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 basic_ofstream<_CharT, _Traits>::basic_ofstream(basic_ofstream&& __rhs)
@@ -1475,8 +1455,6 @@
     return *this;
 }
 
-#endif // _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 void
@@ -1595,13 +1573,12 @@
 #endif // _LIBCPP_STD_VER >= 17
 
 #endif
-#ifndef _LIBCPP_CXX03_LANG
     _LIBCPP_INLINE_VISIBILITY
     basic_fstream(basic_fstream&& __rhs);
 
     _LIBCPP_INLINE_VISIBILITY
     basic_fstream& operator=(basic_fstream&& __rhs);
-#endif
+
     _LIBCPP_INLINE_VISIBILITY
     void swap(basic_fstream& __rhs);
 
@@ -1668,8 +1645,6 @@
 }
 #endif
 
-#ifndef _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 basic_fstream<_CharT, _Traits>::basic_fstream(basic_fstream&& __rhs)
@@ -1689,8 +1664,6 @@
     return *this;
 }
 
-#endif // _LIBCPP_CXX03_LANG
-
 template <class _CharT, class _Traits>
 inline
 void