Allow array method invocations to be resolved in Object

[Andrew Haley <aph at redhat dot com>]

Recent Java compilers generate invocations of nonexistent (and, in
fact, impossible to declare) methods like boolean[].clone().  This
works because Object is a superclass of every class, so such methods
are resolved in Object.

Unfortunately, libgcj cannot cope with this, and fails with

java.lang.ClassNotFoundException: boolean[] not found in
gnu.gcj.runtime.SystemClassLoader{urls=[file:./], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}

The Right Thing to do in the long term is to correct libgcj so that it
can cope with methods like boolean[].clone().  However, in the
meantime it's cleaner simply to tweak the compiler to resolve such
methods in Object.

This is the root cause of
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=180418

Andrew.


Index: expr.c
===================================================================
--- expr.c	(revision 110710)
+++ expr.c	(working copy)
@@ -2279,6 +2279,7 @@
      superclass chain when we're BC-compiling.  */
   if (! flag_verify_invocations
       && method
+      && ! TYPE_ARRAY_P (self_type)
       && self_type != DECL_CONTEXT (method))
     method = NULL_TREE;