In gcc/objc/:

In gcc/objc/:
2010-12-28  Nicola Pero  <nicola.pero@meta-innovation.com>

	PR objc/47076
	* objc-act.c (lookup_protocol): Added 'definition_required'
	argument.  If 'definition_required', and the protocol is not
	defined, emit a warning.
	(objc_declare_protocols): Updated call to lookup_protocol.
	(start_protocol): Same change.
	(check_protocol_recursively): Same change.
	(objc_build_protocol_expr): Same change.
	(lookup_and_install_protocols): Added definition_required argument.
	Pass it to lookup_protocol.
	(objc_get_protocol_qualified_type): Updated call to
	lookup_and_install_protocols.
	(start_class): Updated calls to lookup_and_install_protocols; pass
	true to 'definition_required' to get the warnings.
	(start_protocol): Updated calls to lookup_and_install_protocols.

In gcc/testsuite/:
2010-12-28  Nicola Pero  <nicola.pero@meta-innovation.com>

	PR objc/47076
	* objc.dg/protocol-forward-1.m: New.
	* obj-c++.dg/protocol-forward-1.mm: New.
	* objc.dg/attributes/proto-attribute-2.m: Updated.
	* objc.dg/class-protocol-1.m: Updated.
	* obj-c++.dg/attributes/proto-attribute-2.mm: Updated.
	* obj-c++.dg/class-protocol-1.mm: Updated.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@168307 138bc75d-0d04-0410-961f-82ee72b054a4