mirror of
https://github.com/nodejs/node.git
synced 2025-05-15 21:20:35 +00:00
2883c855e0
PR-URL: https://github.com/nodejs/node/pull/32116 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
33 lines
887 B
JavaScript
33 lines
887 B
JavaScript
// Copyright 2019 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
//
|
|
// Flags: --opt
|
|
|
|
Debug = debug.Debug
|
|
|
|
const evaluate = Debug.evaluateGlobalREPL;
|
|
const evaluateNonREPL = (source) => Debug.evaluateGlobal(source, false).value();
|
|
|
|
// Test that a let declared variable 'x' bound by an optimized function is
|
|
// updated properly.
|
|
evaluate('let x = 42;');
|
|
|
|
evaluate('function foo() { return x; }');
|
|
|
|
%PrepareFunctionForOptimization(foo);
|
|
foo();
|
|
foo();
|
|
%OptimizeFunctionOnNextCall(foo);
|
|
assertEquals(42, foo());
|
|
assertOptimized(foo);
|
|
|
|
evaluate('let x = 21');
|
|
assertEquals(21, foo());
|
|
|
|
// Test that we do not throw a 'use before declaration error' and
|
|
// that the optimized code does not load the hole from the wrong
|
|
// script context.
|
|
evaluate('x; let x;');
|
|
assertEquals(undefined, foo());
|