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gcc/libstdc++-v3
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Jonathan Wakely b57899f30f libstdc++: Consolidate duplicate metaprogramming utilities 
Currently std::variant uses __index_of<T, Types...> to find the first
occurence of a type in a pack, and __exactly_once<T, Types...> to check
that there is no other occurrence.

We can reuse the __find_uniq_type_in_pack<T, Types...>() function for
both tasks, and remove the recursive templates used to implement
__index_of and __exactly_once.

libstdc++-v3/ChangeLog:

	* include/bits/utility.h (__find_uniq_type_in_pack): Move
	definition to here, ...
	* include/std/tuple (__find_uniq_type_in_pack): ... from here.
	* include/std/variant (__detail__variant::__index_of): Remove.
	(__detail::__variant::__exactly_once): Define using
	__find_uniq_type_in_pack instead of __index_of.
	(get<T>, get_if<T>, variant::__index_of): Likewise.
2021-11-04 18:14:50 +00:00
..
config aix: Protect AIX math.h overloads with new macro. 2021-07-22 11:30:34 -04:00
doc libstdc++: Improve generated man pages for libstdc++ 2021-10-21 22:24:57 +01:00
include libstdc++: Consolidate duplicate metaprogramming utilities 2021-11-04 18:14:50 +00:00
libsupc++ libstdc++: Add wrapper for internal uses of std::terminate 2021-10-11 20:35:51 +01:00
po Update copyright years. 2021-01-04 10:26:59 +01:00
python libstdc++: Fix vector<bool> printer tests to work in debug mode 2021-08-18 14:26:38 +01:00
scripts libstdc++: Improve generated man pages for libstdc++ 2021-10-21 22:24:57 +01:00
src libstdc++: Implement std::random_device::entropy() for other sources 2021-10-19 17:27:06 +01:00
testsuite libstdc++: Optimize std::tuple_element and std::tuple_size_v 2021-11-04 18:14:50 +00:00
acinclude.m4 ctype support for libstdc++ on VxWorks 2021-05-04 21:49:43 -03:00
aclocal.m4
ChangeLog Daily bump. 2021-11-04 00:16:32 +00:00
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ChangeLog-2020 libstdc++: Fix typo in ChangeLog-2020 2021-01-13 11:02:13 +00:00
config.h.in libstdc++: Use secure_getenv for filesystem::temp_directory_path() [PR65018] 2021-07-30 18:12:39 +01:00
configure libstdc++: Check for TLS support on mingw cross-compilers 2021-09-15 09:49:33 +01:00
configure.ac libstdc++: Fix broken autoconf check for O_NONBLOCK 2021-08-31 17:38:27 +01:00
configure.host Scope libstdc++ configuration for vxworks to all versions 2020-10-22 16:40:57 +00:00
crossconfig.m4 libstdc++: Check for TLS support on mingw cross-compilers 2021-09-15 09:49:33 +01:00
fragment.am libstdc++: Add C++ runtime support for new 128-bit long double format 2020-12-16 23:25:01 +00:00
linkage.m4
Makefile.am Update copyright years. 2021-01-04 10:26:59 +01:00
Makefile.in libstdc++: Add C++ runtime support for new 128-bit long double format 2020-12-16 23:25:01 +00:00
README

README 

file: libstdc++-v3/README

New users may wish to point their web browsers to the file
index.html in the 'doc/html' subdirectory.  It contains brief
building instructions and notes on how to configure the library in
interesting ways.