--- jsr166/src/jsr166e/extra/AtomicDoubleArray.java	2011/08/10 02:03:29	1.1
+++ jsr166/src/jsr166e/extra/AtomicDoubleArray.java	2011/10/20 16:33:25	1.2
@@ -162,7 +162,9 @@ public class AtomicDoubleArray implement
      * if the current value is <a href="#bitEquals">bitwise equal</a>
      * to the expected value.
      *
-     * <p>May <a href="package-summary.html#Spurious">fail spuriously</a>
+     * <p>May <a
+     * href="http://download.oracle.com/javase/7/docs/api/java/util/concurrent/atomic/package-summary.html#Spurious">
+     * fail spuriously</a>
      * and does not provide ordering guarantees, so is only rarely an
      * appropriate alternative to {@code compareAndSet}.
      *
@@ -222,9 +224,10 @@ public class AtomicDoubleArray implement
         if (iMax == -1)
             return "[]";
 
-        StringBuilder b = new StringBuilder();
+        // Double.toString(Math.PI).length() == 17
+        StringBuilder b = new StringBuilder((17 + 2) * (iMax + 1));
         b.append('[');
-        for (int i = 0; ; i++) {
+        for (int i = 0;; i++) {
             b.append(longBitsToDouble(getRaw(byteOffset(i))));
             if (i == iMax)
                 return b.append(']').toString();