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Jonathan Wakely 4ff3e65090 Add allocator-extended copy/move ctors to COW string 
Add these constructors from C++11 which were missing from the COW
basic_string. Additionally simplify the definitions of the
basic_string::reference and basic_string::const_reference types as
required by C++11.

This allows filesystem::path::string<Allocator>() to be simplified, so
that the same code is used for both basic_string implementations.

	* config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
	copy/move constructors for old std::basic_string.
	* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
	(basic_string::reference, basic_string::const_reference): Define
	as plain references for C++11 and later.
	(basic_string::basic_string()): Put constructor body outside
	preprocessor conditional groups.
	(basic_string::basic_string(basic_string&&)): Move _Alloc_hider
	instead of copying it.
	(basic_string::basic_string(const basic_string&, const _Alloc&)):
	Define.
	(basic_string::basic_string(basic_string&&, const _Alloc&)):
	Define.
	* include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
	cases for old basic_string.
	* testsuite/21_strings/basic_string/cons/char/8.cc: Test
	allocator-extended constructors unconditionally. Add extra members to
	allocator type when using old string ABI.
	* testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
	for old string ABI.
	* testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.

From-SVN: r267584
 		2019-01-04 23:23:17 +00:00
..
17_intro Update copyright years. 2019-01-01 13:31:55 +01:00
18_support Update copyright years. 2019-01-01 13:31:55 +01:00
19_diagnostics Update copyright years. 2019-01-01 13:31:55 +01:00
20_util Update copyright years. 2019-01-01 13:31:55 +01:00
21_strings Add allocator-extended copy/move ctors to COW string 2019-01-04 23:23:17 +00:00
22_locale PR libstdc++/88681 export missing symbols 2019-01-03 20:38:04 +00:00
23_containers Fix test failure when -fno-inline is used 2019-01-04 18:56:26 +00:00
24_iterators Update copyright years. 2019-01-01 13:31:55 +01:00
25_algorithms Update copyright years. 2019-01-01 13:31:55 +01:00
26_numerics Update copyright years. 2019-01-01 13:31:55 +01:00
27_io Fix test failure with old Copy-On-Write std::string 2019-01-04 15:42:33 +00:00
28_regex Update copyright years. 2019-01-01 13:31:55 +01:00
29_atomics Update copyright years. 2019-01-01 13:31:55 +01:00
30_threads Update copyright years. 2019-01-01 13:31:55 +01:00
abi Update copyright years. 2019-01-01 13:31:55 +01:00
backward Update copyright years. 2019-01-01 13:31:55 +01:00
config Update copyright years. 2019-01-01 13:31:55 +01:00
data
…
decimal Update copyright years. 2019-01-01 13:31:55 +01:00
experimental Fix year range in copyright header 2019-01-02 10:44:35 +00:00
ext Update copyright years. 2019-01-01 13:31:55 +01:00
lib Update copyright years. 2019-01-01 13:31:55 +01:00
libstdc++-abi Update copyright years. 2019-01-01 13:31:55 +01:00
libstdc++-dg Update copyright years. 2019-01-01 13:31:55 +01:00
libstdc++-prettyprinters Update copyright years. 2019-01-01 13:31:55 +01:00
libstdc++-xmethods Update copyright years. 2019-01-01 13:31:55 +01:00
performance Update copyright years. 2019-01-01 13:31:55 +01:00
special_functions Update copyright years. 2019-01-01 13:31:55 +01:00
tr1 Update copyright years. 2019-01-01 13:31:55 +01:00
tr2 Update copyright years. 2019-01-01 13:31:55 +01:00
util Update copyright years. 2019-01-01 13:31:55 +01:00
Makefile.am Update copyright years. 2019-01-01 13:31:55 +01:00
Makefile.in Update GCC to autoconf 2.69, automake 1.15.1 (PR bootstrap/82856). 2018-10-31 17:03:16 +00:00