decl.c (error_mark_node): New global.

decl.c (error_mark_node):  New global.

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	* decl.c (error_mark_node), java-tree.h:  New global.
	* parse.y:  Use empty_stmt_node instead of size_zero_node.
	(build_if_else_statement):  If missing else, use empty_stmt_node.
	* parse.y (not_initialized_as_it_should_p):  Removed, with its callers.
	(java_complete_expand_method):  Complain if return is missing.
	(java_check_regular_methods):  Comment out incorrect error check.
	(not_accessible_p):  Fix incorrect handling of protected methods.
	(patch_method_invocation):  Pass correct context to not_accessible_p.
	(find_applicable_accessible_methods_list):  Likewise.
	(qualify_ambiguous_name):  If ARRAY_REF, it's an expression name.
	(java_complete_tree):  For CASE_EXPR and DEFAULT_EXPR, set
	TREE_TYPE (to void_type_node);  otherwise expand_expr crashes.
	(patch_if_else_statement):  Fix setting of CAN_COMPLETE_NORMALLY.
	* jcf-write.c (CHECK_OP, CHECK_PUT):  Add some error checking.
	(push_int_const):  Remove reundant NOTE_PUSH.
	(generate_bytecode_insns - case STRING_CST):  Do NOTE_PUSH.
	(- case SWITCH_EXPR):  Fix code generation bug.
	(- case PREDECREMENT_EXPR etc):  Remove redundant NOTE_PUSH.
	(generate_classfile):  More robust for abstract methods.

From-SVN: r23661