re PR c/61405 (Not emitting "enumeration value not handled in switch" warning for bit-field enums)

	PR c/61405
	PR c/53874
gcc/
	* asan.c (maybe_instrument_call): Add default case.
	* ipa-pure-const.c (special_builtin_state): Likewise.
	* predict.c (expr_expected_value_1): Likewise.
	* lto-streamer-out.c (write_symbol): Initialize variable.
gcc/c-family/
	* c-common.h (struct c_common_resword): Don't define CPP_KEYWORD.
gcc/c/
	* c-parser.c: Don't define CPP_KEYWORD.
	(c_parser_switch_statement): Pass original type to c_finish_case.
	* c-tree.h (c_finish_case): Update declaration.
	* c-typeck.c (c_finish_case): Add TYPE parameter.  Pass it
	conditionally to c_do_switch_warnings.
gcc/cp/
	* semantics.c (finish_switch_cond): Call unlowered_expr_type.
	* tree.c (bot_manip): Add default case.
	* parser.c (cp_parser_primary_expression): Cast the controlling
	expression of a switch to an int.
	(cp_parser_unqualified_id): Likewise.
gcc/testsuite/
	* c-c++-common/pr53874.c: New test.
	* c-c++-common/pr61405.c: New test.
libcpp/
	* include/cpplib.h (enum cpp_ttype): Define CPP_KEYWORD.

From-SVN: r215559
diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h
index 62d271b..06d18d4 100644
--- a/libcpp/include/cpplib.h
+++ b/libcpp/include/cpplib.h
@@ -153,6 +153,9 @@
   TTYPE_TABLE
   N_TTYPES,
 
+  /* A token type for keywords, as opposed to ordinary identifiers.  */
+  CPP_KEYWORD,
+
   /* Positions in the table.  */
   CPP_LAST_EQ        = CPP_LSHIFT,
   CPP_FIRST_DIGRAPH  = CPP_HASH,