fix PR c++/46868
gcc/cp/
	PR c++/46868
	* parser.c (cp_parser_class_specifier): Require a closing brace
	to attempt error recovery.

gcc/testsuite/
	PR c++/46868
	* g++.dg/pr46868.C: New test.
	* g++.dg/parse/parameter-declaration-1.C: Adjust.
	* g++.dg/parse/error14.C: Adjust.

From-SVN: r170440