Fix http://llvm.org/bugs/show_bug.cgi?id=11752 git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@148069 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/ostream b/include/ostream index b38326e..c4e6b38 100644 --- a/include/ostream +++ b/include/ostream 
@@ -1218,12 +1218,12 @@  <  !is_lvalue_reference<_Stream>::value &&  is_base_of<ios_base, _Stream>::value, - _Stream& + _Stream&&  >::type  operator<<(_Stream&& __os, const _Tp& __x)  {  __os << __x; - return __os; + return _VSTD::move(__os);  }    #endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES