diff -r de14cee4b93d -r 6c33d8f2601e jdk/src/share/classes/java/util/WeakHashMap.java
--- a/jdk/src/share/classes/java/util/WeakHashMap.java	Wed Jun 05 11:12:31 2013 +0100
+++ b/jdk/src/share/classes/java/util/WeakHashMap.java	Fri May 31 10:53:19 2013 +0200
@@ -1100,9 +1100,10 @@
             }
             else
                 mc = expectedModCount;
-            if (tab.length >= hi && (i = index) >= 0 && i < hi) {
-                index = hi;
+            if (tab.length >= hi && (i = index) >= 0 &&
+                (i < (index = hi) || current != null)) {
                 WeakHashMap.Entry<K,V> p = current;
+                current = null; // exhaust
                 do {
                     if (p == null)
                         p = tab[i++];
@@ -1179,9 +1180,10 @@
             }
             else
                 mc = expectedModCount;
-            if (tab.length >= hi && (i = index) >= 0 && i < hi) {
-                index = hi;
+            if (tab.length >= hi && (i = index) >= 0 &&
+                (i < (index = hi) || current != null)) {
                 WeakHashMap.Entry<K,V> p = current;
+                current = null; // exhaust
                 do {
                     if (p == null)
                         p = tab[i++];
@@ -1256,9 +1258,10 @@
             }
             else
                 mc = expectedModCount;
-            if (tab.length >= hi && (i = index) >= 0 && i < hi) {
-                index = hi;
+            if (tab.length >= hi && (i = index) >= 0 &&
+                (i < (index = hi) || current != null)) {
                 WeakHashMap.Entry<K,V> p = current;
+                current = null; // exhaust
                 do {
                     if (p == null)
                         p = tab[i++];