diff -r bcbc4c03d35d -r 48053538940a rt/vm/src/main/java/org/apidesign/vm4brwsr/NumberOperations.java
--- a/rt/vm/src/main/java/org/apidesign/vm4brwsr/NumberOperations.java	Wed Jan 27 21:24:22 2016 +0100
+++ b/rt/vm/src/main/java/org/apidesign/vm4brwsr/NumberOperations.java	Tue Mar 22 02:51:04 2016 +0100
@@ -25,6 +25,10 @@
 
     private int used;
 
+    public void reset() {
+        used = 0;
+    }
+
     public String mul32() {
         used |= MUL32;
         return "__mul32(@1,@2)";