| // Copyright (c) 2020 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-assignment-operators-runtime-semantics-evaluation |
| description: > |
| Strict Mode - TypeError is not thrown if The LeftHandSide of a Logical |
| Assignment operator(&&=) is a reference to a non-existent property of an |
| object whose [[Extensible]] internal property is false. |
| flags: [onlyStrict] |
| features: [logical-assignment-operators] |
| |
| ---*/ |
| |
| var obj = {}; |
| Object.preventExtensions(obj); |
| |
| obj.prop &&= 1; |
| assert.sameValue(obj.prop, undefined, "obj.prop"); |
