diff --git a/JavaScriptCore/ChangeLog b/JavaScriptCore/ChangeLog
index e89628ac2a0a20c28e20f9f34da9b9c966a4d9b7..d053f6a7466768a04ecb61820e9b58b8fcc8187a 100644
--- a/JavaScriptCore/ChangeLog
+++ b/JavaScriptCore/ChangeLog
@@ -1,3 +1,13 @@
+2008-05-05  Darin Adler  <darin@apple.com>
+
+        Reviewed by John Sullivan.
+
+        - fix debug-only leak seen on buildbot
+
+        * wtf/HashTable.h:
+        (WTF::HashTable::checkKey): After writing an empty value in, but before constructing a
+        deleted value on top of it, call the destructor so the empty value doesn't leak.
+
 2008-05-02  Alexey Proskuryakov  <ap@webkit.org>
 
         Reviewed by Geoffrey Garen.
diff --git a/JavaScriptCore/wtf/HashTable.h b/JavaScriptCore/wtf/HashTable.h
index d4e267992014713fd387af72ee609e1558bd97bd..d31b9c6416d9c43c6b4efb72c03ac3bd1c1d4968 100644
--- a/JavaScriptCore/wtf/HashTable.h
+++ b/JavaScriptCore/wtf/HashTable.h
@@ -443,6 +443,7 @@ namespace WTF {
             return;
         ASSERT(!HashTranslator::equal(KeyTraits::emptyValue(), key));
         ValueType deletedValue = Traits::emptyValue();
+        deletedValue.~ValueType();
         Traits::constructDeletedValue(&deletedValue);
         ASSERT(!HashTranslator::equal(Extractor::extract(deletedValue), key));
         new (&deletedValue) ValueType(Traits::emptyValue());