PR c++/28292
	* decl2.c (acceptable_java_type): Robustify. Use
	proper Boolean return type instead of return 1.
	(check_java_method): Don't issue error about
	type not being an acceptable Java parameter if 
	it's error_mark_node.

	* g++.dg/other/error12.C: New test.

From-SVN: r115474