r252922 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Mon Sep 18 11:40:10 2017
New Revision: 252922

URL: https://gcc.gnu.org/viewcvs?rev=252922&root=gcc&view=rev
Log:
PR libstdc++/71187 reimplement declval without add_rvalue_reference

	PR libstdc++/71187
	* include/std/type_traits (__declval): New function to deduce return
	type of declval.
	(__declval_protector::_delegate): Remove.
	(declval): Use __declval instead of add_rvalue_reference and
	__declval_protector::__delegate.
	* testsuite/20_util/declval/requirements/1_neg.cc: Adjust dg-error
	lineno.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
	Likewise.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
	Likewise.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/type_traits
    trunk/libstdc++-v3/testsuite/20_util/declval/requirements/1_neg.cc
    trunk/libstdc++-v3/testsuite/20_util/make_signed/requirements/typedefs_neg.cc
    trunk/libstdc++-v3/testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc