diff -r ad2ca2a4ab5e -r 0e5899f09dab src/share/classes/com/sun/tools/javac/comp/Flow.java
--- a/src/share/classes/com/sun/tools/javac/comp/Flow.java	Tue Sep 25 11:56:46 2012 +0100
+++ b/src/share/classes/com/sun/tools/javac/comp/Flow.java	Tue Sep 25 13:06:58 2012 -0700
@@ -1318,11 +1318,7 @@
          *  index into the vars array.
          */
         void newVar(VarSymbol sym) {
-            if (nextadr == vars.length) {
-                VarSymbol[] newvars = new VarSymbol[nextadr * 2];
-                System.arraycopy(vars, 0, newvars, 0, nextadr);
-                vars = newvars;
-            }
+            vars = ArrayUtils.ensureCapacity(vars, nextadr);
             if ((sym.flags() & FINAL) == 0) {
                 sym.flags_field |= EFFECTIVELY_FINAL;
             }