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[libc++] Enable the rvalue overloads of operator<< and operator>> even in C++03.

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Continuing to eliminate no-longer-needed uses of _LIBCPP_CXX03_LANG.

Differential Revision: https://reviews.llvm.org/D104725
This commit is contained in:
Arthur O'Dwyer 2021-06-15 12:57:05 -04:00
parent ad4bb82809
commit 585496803c
6 changed files with 3 additions and 19 deletions
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6
libcxx/include/istream
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@ -1376,8 +1376,6 @@ ws(basic_istream<_CharT, _Traits>& __is)
return __is;
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Stream, class _Tp, class = void>
struct __is_istreamable : false_type { };
@ -1388,7 +1386,7 @@ struct __is_istreamable<_Stream, _Tp, decltype(
template <class _Stream, class _Tp, class = typename enable_if<
_And<is_base_of<ios_base, _Stream>,
__is_istreamable<_Stream&, _Tp&&>>::value
__is_istreamable<_Stream&, _Tp&&> >::value
>::type>
_LIBCPP_INLINE_VISIBILITY
_Stream&& operator>>(_Stream&& __is, _Tp&& __x)
@ -1397,8 +1395,6 @@ _Stream&& operator>>(_Stream&& __is, _Tp&& __x)
return _VSTD::move(__is);
}
#endif // _LIBCPP_CXX03_LANG
template <class _CharT, class _Traits>
class _LIBCPP_TEMPLATE_VIS basic_iostream
: public basic_istream<_CharT, _Traits>,

6
libcxx/include/ostream
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@ -1024,8 +1024,6 @@ flush(basic_ostream<_CharT, _Traits>& __os)
return __os;
}
#ifndef _LIBCPP_CXX03_LANG
template <class _Stream, class _Tp, class = void>
struct __is_ostreamable : false_type { };
@ -1036,7 +1034,7 @@ struct __is_ostreamable<_Stream, _Tp, decltype(
template <class _Stream, class _Tp, class = typename enable_if<
_And<is_base_of<ios_base, _Stream>,
__is_ostreamable<_Stream&, const _Tp&>>::value
__is_ostreamable<_Stream&, const _Tp&> >::value
>::type>
_LIBCPP_INLINE_VISIBILITY
_Stream&& operator<<(_Stream&& __os, const _Tp& __x)
@ -1045,8 +1043,6 @@ _Stream&& operator<<(_Stream&& __os, const _Tp& __x)
return _VSTD::move(__os);
}
#endif // _LIBCPP_CXX03_LANG
template<class _CharT, class _Traits, class _Allocator>
basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,

2
libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/not_istreamable.verify.cpp
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@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// Make sure the rvalue overload of operator>> isn't part of the overload set
// when the type is not input streamable from a lvalue stream.

4
libcxx/test/std/input.output/iostream.format/input.streams/istream.rvalue/rvalue.pass.cpp
View File

@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// <istream>
// template <class Stream, class T>
@ -77,7 +75,7 @@ int main(int, char**)
// test perfect forwarding
assert(called == false);
std::istringstream ss;
std::istringstream&& result = (std::move(ss) >> A{});
std::istringstream&& result = (std::move(ss) >> A());
assert(&result == &ss);
assert(called);
}

2
libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/not_ostreamable.verify.cpp
View File

@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// Make sure the rvalue overload of operator<< isn't part of the overload set
// when the type is not output streamable into a lvalue stream.

2
libcxx/test/std/input.output/iostream.format/output.streams/ostream.rvalue/rvalue.pass.cpp
View File

@ -6,8 +6,6 @@
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// <ostream>
// template <class Stream, class T>