test262/test/language/expressions/prefix-decrement/target-cover-yieldexpr.js

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JavaScript

// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-unary-operators-static-semantics-early-errors
es6id: 12.5.1
description: Applied to a "covered" YieldExpression
info: |
UnaryExpression :
++ UnaryExpression
-- UnaryExpression
- It is an early Reference Error if IsValidSimpleAssignmentTarget of
UnaryExpression is false.
12.15.3 Static Semantics: IsValidSimpleAssignmentTarget
AssignmentExpression:
YieldExpression
ArrowFunction
LeftHandSideExpression = AssignmentExpression
LeftHandSideExpression AssignmentOperator AssignmentExpression
1. Return false.
features: [generators]
negative:
phase: early
type: ReferenceError
---*/
throw "Test262: This statement should not be evaluated.";
function* g() {
--(yield);
}