r263074 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Mon Jul 30 17:13:05 2018
New Revision: 263074

URL: https://gcc.gnu.org/viewcvs?rev=263074&root=gcc&view=rev
Log:
PR libstdc++/86734 make reverse_iterator::operator-> more robust

Implement the proposed resolution from LWG 1052, which also resolves
DR 2118 by avoiding taking the address in the first place.

	PR libstdc++/86734
	* include/bits/stl_iterator.h (reverse_iterator::operator->): Call
	_S_to_pointer (LWG 1052, LWG 2118).
	(reverse_iterator::_S_to_pointer): Define overloaded helper functions.
	* testsuite/24_iterators/reverse_iterator/dr1052.cc: New test.
	* testsuite/24_iterators/reverse_iterator/dr2188.cc: New test.

Added:
    trunk/libstdc++-v3/testsuite/24_iterators/reverse_iterator/dr1052.cc
    trunk/libstdc++-v3/testsuite/24_iterators/reverse_iterator/dr2188.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/stl_iterator.h