re PR c++/53096 ([DR 1333] [c++11] should be possible to default a copy ctor that takes non-const arg)

/cp
2012-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/53096
	* class.c (check_bases_and_members): Implement core/1333, do not
	disallow defaulted in the class body non-const ref special members.

/testsuite
2012-04-26  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/53096
	* g++.dg/cpp0x/defaulted35.C: New.
	* g++.dg/cpp0x/defaulted15.C: Adjust.

From-SVN: r186888