Update feature test macro, add deleted operators, update u8path
This patch increments the __cpp_lib_char8_t feature test macro, adds deleted
operator<< overloads for basic_ostream, and modifies u8path to accept
sequences of char8_t for both the C++17 implementation of std::filesystem, and
the filesystem TS implementation.
The implementation mechanism used for u8path differs between the C++17 and
filesystem TS implementations. The changes to the former take advantage of
C++17 'if constexpr'. The changes to the latter retain C++11 compatibility
and rely on tag dispatching.
2019-11-29 Tom Honermann <tom@honermann.net>
Update feature test macro, add deleted operators, update u8path
* include/bits/c++config: Bumped the value of the __cpp_lib_char8_t
feature test macro.
* include/bits/fs_path.h (u8path): Modified u8path to accept sequences
of char8_t.
* include/experimental/bits/fs_path.h (u8path): Modified u8path to
accept sequences of char8_t.
* include/std/ostream: Added deleted overloads of wchar_t, char8_t,
char16_t, and char32_t for ordinary and wide formatted character and
string inserters.
From-SVN: r278856
