gcc/libstdc++-v3
Jonathan Wakely ef45724acd P0646R1 Improving the Return Value of Erase-Like Algorithms I
In C++2a the remove, remove_if and unique members of std::list and
std::forward_list have been changed to return the number of elements
removed. This is an ABI change for the remove members and the
non-template unique members, so an abi-tag is used to give those symbols
new mangled names in C++2a mode. For the function templates the return
type is part of the mangled name so no abi-tag is needed.

	* include/bits/forward_list.h (__cpp_lib_list_remove_return_type):
	Define.
	(forward_list::__remove_return_type): Define typedef as size_type or
	void, according to __cplusplus value.
	(_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
	empty, according to __cplusplus value.
	(forward_list::remove, forward_list::unique): Use typedef and macro
	to change return type and add abi-tag for C++2a.
	(forward_list::remove_if<Pred>, forward_list::unique<BinPred>): Use
	typedef to change return type for C++2a.
	* include/bits/forward_list.tcc (_GLIBCXX20_ONLY): Define macro.
	(forward_list::remove, forward_list::remove_if<Pred>)
	(forward_list::unique<BinPred>): Return number of removed elements
	for C++2a.
	* include/bits/list.tcc (_GLIBCXX20_ONLY): Define macro.
	(list::remove, list::unique, list::remove_if<Predicate>)
	(list::unique<BinaryPredicate>): Return number of removed elements
	for C++2a.
	* include/bits/stl_list.h (__cpp_lib_list_remove_return_type): Define.
	(list::__remove_return_type): Define typedef as size_type or
	void, according to __cplusplus value.
	(_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
	empty, according to __cplusplus value.
	(list::remove, list::unique): Use typedef and macro to change return
	type and add abi-tag for C++2a.
	(list::remove_if<Predicate>, list::unique<BinaryPredicate>): Use
	typedef to change return type for C++2a.
	* include/std/version (__cpp_lib_list_remove_return_type): Define.
	* testsuite/23_containers/forward_list/operations/
	remove_cxx20_return.cc: New.
	* testsuite/23_containers/forward_list/operations/
	unique_cxx20_return.cc: New.

From-SVN: r262423
2018-07-04 21:15:01 +01:00
..
config Update powerpc64-linux-gnu/baseline_symbols.txt 2018-06-25 21:36:51 +01:00
doc * doc/xml/manual/status_cxx2017.xml: Document N4531 status. 2018-06-25 17:42:28 +01:00
include P0646R1 Improving the Return Value of Erase-Like Algorithms I 2018-07-04 21:15:01 +01:00
libsupc++ Some libstdc++ fixes for -Wdeprecated-copy. 2018-05-18 16:02:14 -04:00
po Update copyright years. 2018-01-03 11:03:58 +01:00
python PR libstdc++/86112 fix printers for Python 2.6 2018-06-25 22:03:49 +01:00
scripts Update copyright years. 2018-01-03 11:03:58 +01:00
src PR libstdc++/83328 add correct basic_string::insert for initializer_list 2018-06-21 23:01:25 +01:00
testsuite P0646R1 Improving the Return Value of Erase-Like Algorithms I 2018-07-04 21:15:01 +01:00
acinclude.m4 PR libstdc++/83328 add correct basic_string::insert for initializer_list 2018-06-21 23:01:25 +01:00
aclocal.m4 Build libgo with -Wa,-nH if possible (PR go/78978) [non-libgo parts] 2017-01-06 14:33:47 +00:00
ChangeLog P0646R1 Improving the Return Value of Erase-Like Algorithms I 2018-07-04 21:15:01 +01:00
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ChangeLog-2016 Update copyright years. 2017-01-01 13:07:43 +01:00
ChangeLog-2017 Update copyright years. 2018-01-03 11:03:58 +01:00
config.h.in Fix bootstrap failure for bare metal due to autoconf link tests 2018-06-18 17:01:24 +01:00
configure PR libstdc++/83328 add correct basic_string::insert for initializer_list 2018-06-21 23:01:25 +01:00
configure.ac Fix bootstrap failure for bare metal due to autoconf link tests 2018-06-18 17:01:24 +01:00
configure.host Separate Solaris/SPARC and x86 baselines 2017-02-02 16:24:03 +00:00
crossconfig.m4 crossconfig.m4: Handle OpenBSD just like NetBSD. 2018-06-18 11:28:53 -06:00
fragment.am re PR other/79046 (g++ -print-file-name=plugin uses full version number in path) 2017-01-17 10:38:48 +01:00
linkage.m4
Makefile.am Update copyright years. 2018-01-03 11:03:58 +01:00
Makefile.in Enable building libstdc++-v3 with Intel CET 2017-11-17 22:28:10 +01:00
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.