arguments object, non-strict immutable name binding fixup (#1278)

tc39 · Oct 16, 2017 · 9e3ff9a · 9e3ff9a
1 parent 5d4c667
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diff --git a/test/language/arguments-object/S10.1.6_A1_T3.js b/test/language/arguments-object/S10.1.6_A1_T3.js
diff --git a/test/language/arguments-object/non-strict-arguments-object-is-immutable.js b/test/language/arguments-object/non-strict-arguments-object-is-immutable.js
@@ -0,0 +1,21 @@
+// Copyright 2017 Rick Waldron. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-functiondeclarationinstantiation
+description: Non-strict mode function execution context has a mutable "arguments" binding, however it is created with a "false" argument, which means it may not be deleted.
+info: |
+  envRec.CreateMutableBinding("arguments", false).
+
+  CreateMutableBinding(N, D)
+
+  Create a new but uninitialized mutable binding in an Environment Record. The String value N is the text of the bound name. If the Boolean argument D is true the binding may be subsequently deleted.
+
+flags: [noStrict]
+---*/
+
+function f1() {
+  assert.sameValue(delete arguments, false);
+}
+
+f1();