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diff --git a/js/src/tests/js1_8_1/regress/regress-452498-051.js b/js/src/tests/js1_8_1/regress/regress-452498-051.js
new file mode 100644
index 000000000..cd5554e74
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+++ b/js/src/tests/js1_8_1/regress/regress-452498-051.js
@@ -0,0 +1,48 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ * Contributor: Jason Orendorff
+ */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 452498;
+var summary = 'TM: upvar2 regression tests';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+// ------- Comment #51 From Jason Orendorff
+
+// Assertion failure: UPVAR_FRAME_SKIP(uva->vector[i]) == 0
+// at ../jsopcode.cpp:2791
+//
+// when decompiling the eval code, which is:
+//
+// main:
+// 00000:  10  getupvar 0
+// 00003:  10  getprop "y"
+// 00006:  10  popv
+// 00007:  10  stop
+  try
+  {
+    function f() { var x; eval("x.y"); }
+    f();
+  }
+  catch(ex)
+  {
+  }
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}