Index: src/org/aspectj/weaver/bcel/BcelWeaver.java
===================================================================
RCS file: /home/technology/org.aspectj/modules/weaver/src/org/aspectj/weaver/bcel/BcelWeaver.java,v
retrieving revision 1.84
diff -u -r1.84 BcelWeaver.java
--- src/org/aspectj/weaver/bcel/BcelWeaver.java	16 Feb 2006 09:04:50 -0000	1.84
+++ src/org/aspectj/weaver/bcel/BcelWeaver.java	17 Feb 2006 11:37:18 -0000
@@ -611,7 +611,11 @@
 			// if each branch binds it in exactly the same way...
 			List ambiguousNames = new ArrayList();
 			for (int i = 0; i < numFormals; i++) {
-				if (!leftBindings[i].equals(rightBindings[i])) {
+				if (leftBindings[i] == null) {
+					if (rightBindings[i] != null) {
+						ambiguousNames.add(names[i]);
+					}
+				} else if (!leftBindings[i].equals(rightBindings[i])) {
 					ambiguousNames.add(names[i]);
 				}
 			}