commit e0a966c08abce40ca9dbd399766576f0dfecbcb5
author redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> Thu May 23 21:40:56 2019 +0000
committer redi <redi@138bc75d-0d04-0410-961f-82ee72b054a4> Thu May 23 21:40:56 2019 +0000
tree a3d1f6bdc1b3b0ce8e8352e0048a022a8bee7691
parent dbf8a9dccf969cc836563ef1fc55a36bb816da8b

LWG 2921 remove packaged_task constructors taking allocators

	* doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
	* doc/xml/manual/intro.xml: Likewise.
	* include/std/future (__create_task_state): Add default arguments
	to make providing an allocator optional.
	(packaged_task::packaged_task(F&&)): Call __create_task_state directly
	instead of delegating to another constructor.
	(packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
	define allocator-extended constructors for C++17 and later.
	* testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
	C++11 and C++14.
	* testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
	* testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
	* testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@271582 138bc75d-0d04-0410-961f-82ee72b054a4