1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/expressions/postfix-decrement/S11.3.2_A6_T3.js b/js/src/tests/test262/language/expressions/postfix-decrement/S11.3.2_A6_T3.js
new file mode 100644
index 0000000000..30ae7714ce
--- /dev/null
+++ b/js/src/tests/test262/language/expressions/postfix-decrement/S11.3.2_A6_T3.js
@@ -0,0 +1,24 @@
+// Copyright (C) 2015 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+info: Operator x-- evaluates its reference expression once.
+description: >
+    The operand expression is evaluated exactly once. Operand expression is
+    MemberExpression: base[prop]. ToPropertyKey(prop) is not called multiple
+    times.
+---*/
+
+var propKeyEvaluated = false;
+var base = {};
+var prop = {
+  toString: function() {
+    assert(!propKeyEvaluated);
+    propKeyEvaluated = true;
+    return 1;
+  }
+};
+
+base[prop]--;
+
+reportCompare(0, 0);