fd3ff03da2
The previous code did not properly check for harmony const when doing the dynamic redeclaration check. This was masked in the test because each eval had an initializer, and the initializer was what triggered the exception. This patch tightens the test by removing initializers and fixes the bug in DeclareLookupSlot. Also change the test to use assertThrows where possible. BUG=v8:4550 LOG=n Review URL: https://codereview.chromium.org/1437003006 Cr-Commit-Position: refs/heads/master@{#31995}
85 lines
1.5 KiB
JavaScript
85 lines
1.5 KiB
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --harmony-sloppy --harmony-sloppy-let --harmony-sloppy-function
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// Var-let conflict in a function throws, even if the var is in an eval
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// Throws at the top level of a function
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assertThrows(function() {
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let x = 1;
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eval('const x = 2');
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}, TypeError);
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// If the eval is in its own block scope, throws
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assertThrows(function() {
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let y = 1;
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{ eval('const y = 2'); }
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}, TypeError);
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// If the let is in its own block scope, with the eval, throws
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assertThrows(function() {
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{
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let x = 1;
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eval('const x = 2');
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}
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}, TypeError);
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// Legal if the let is no longer visible
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assertDoesNotThrow(function() {
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{
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let x = 1;
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}
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eval('const x = 2');
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});
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// In global scope
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let caught = false;
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try {
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let z = 1;
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eval('const z = 2');
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} catch (e) {
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caught = true;
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}
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assertTrue(caught);
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// Let declarations beyond a function boundary don't conflict
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caught = false;
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try {
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let a = 1;
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(function() {
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eval('const a');
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})();
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} catch (e) {
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caught = true;
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}
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assertFalse(caught);
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// var across with doesn't conflict
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caught = false;
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try {
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(function() {
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with ({x: 1}) {
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eval("const x = 2;");
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}
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})();
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} catch (e) {
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caught = true;
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}
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assertFalse(caught);
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// var can still conflict with let across a with
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caught = false;
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try {
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(function() {
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let x;
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with ({x: 1}) {
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eval("const x = 2;");
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}
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})();
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} catch (e) {
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caught = true;
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}
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assertTrue(caught);
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