Patch: FYI: PR 5670 patch

[Tom Tromey]

I'm checking this in.
This is a slightly modified version of the patch from PR 5670.
I've already checked in a Mauve verifier test for this.

Tom

Index: ChangeLog
from  Todd Stock  <toddastock@yahoo.com>

	Fix for PR libgcj/5670:
	* verify.cc (is_assignable_from_slow): If `source' is interface,
	recursively look for merge with `target'.

Index: verify.cc
===================================================================
RCS file: /cvs/gcc/gcc/libjava/verify.cc,v
retrieving revision 1.36
diff -u -r1.36 verify.cc
--- verify.cc 2002/02/13 17:12:27 1.36
+++ verify.cc 2002/02/14 17:46:32
@@ -259,10 +259,22 @@
 	    if (source == NULL)
 	      return false;
 	  }
+	else if (source->isInterface ())
+	  {
+	    for (int i = 0; i < target->interface_count; ++i)
+	      {
+		// We use a recursive call because we also need to
+		// check superinterfaces.
+		if (is_assignable_from_slow (target->interfaces[i], source))
+		  return true;
+	      }
+	    target = target->getSuperclass ();
+	    if (target == NULL)
+	      return false;
+	  }
 	else if (target == &java::lang::Object::class$)
 	  return true;
-	else if (source->isInterface ()
-		 || source == &java::lang::Object::class$)
+	else if (source == &java::lang::Object::class$)
 	  return false;
 	else
 	  source = source->getSuperclass ();