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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 452498;
+var summary = 'TM: upvar2 regression tests';
+var actual = '';
+var expect = '';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+ printBugNumber(BUGNUMBER);
+ printStatus (summary);
+
+// ------- Comment #50 From Jason Orendorff
+
+// Do not crash
+
+// compiler bug when a block introduces no names
+ { let {}={}; }
+
+ try
+ {
+// compiler incorrectly emits GETLOCAL for first `x`,
+// triggering decompiler assertion
+ while (x.y) { let x; }
+ }
+ catch(ex)
+ {
+ }
+
+ reportCompare(expect, actual, summary);
+}