re PR c++/46890 (Failed to compile scummvm's player_v4a.cpp)

re PR c++/46890 (Failed to compile scummvm's player_v4a.cpp)

gcc/c-family/
	PR c++/46890
	* c-common.h (keyword_is_decl_specifier): Declare.
	* c-common.c (keyword_is_decl_specifier): Define.
	(keyword_is_function_specifier): New function.

gcc/cp/
	PR c++/46890
	* parser.c (cp_parser_class_specifier): Fix setting of
	want_semicolon.

gcc/testsuite/
	PR c++/46890
	* g++.dg/parser/semicolon3.C: Adjust.
	* g++.dg/parser/semicolon4.C: New testcase.
	* g++.dg/pr46890.C: New testcase.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r169797