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Fix assertion failure in JavascriptArray.cpp #6846

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Fix assertion failure in JavascriptArray.cpp #6846

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cd03239
Fix assertion
ShortDevelopment Jun 6, 2024
5ba6731
Added test
ShortDevelopment Jun 6, 2024
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5 changes: 2 additions & 3 deletions lib/Runtime/Library/JavascriptArray.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -9402,9 +9402,8 @@ using namespace Js;
}
else
{
Assert(fromVal < MaxArrayLength);
Assert(toVal < MaxArrayLength);
Assert(direction == -1 || (fromVal + count < MaxArrayLength && toVal + count < MaxArrayLength));
Assert(direction != -1 || (fromVal < MaxArrayLength && toVal < MaxArrayLength));
Assert(fromVal + count <= MaxArrayLength && toVal + count <= MaxArrayLength);
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uint32 fromIndex = static_cast<uint32>(fromVal);
uint32 toIndex = static_cast<uint32>(toVal);
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20 changes: 20 additions & 0 deletions test/es6/ES6ArrayAPI_slow.js
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@@ -0,0 +1,20 @@
//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Copyright (c) ChakraCore Project Contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

WScript.LoadScriptFile("..\\UnitTestFramework\\UnitTestFramework.js");

const uint32Max = 4294967295;
const tests = [
{
name: "Issue #6770 (Assertion failure in copyWithin)",
body() {
const array = [];
array.length = uint32Max;
array.copyWithin();
}
}
];
testRunner.runTests(tests, { verbose: WScript.Arguments[0] != "summary" });
7 changes: 7 additions & 0 deletions test/es6/rlexe.xml
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Expand Up @@ -508,6 +508,13 @@
<compile-flags>-ES6ObjectLiterals -args summary -endargs</compile-flags>
</default>
</test>
<test>
<default>
<files>ES6ArrayAPI_slow.js</files>
<compile-flags>-ES6ObjectLiterals -args summary -endargs</compile-flags>
<tags>Slow</tags>
</default>
</test>
<test>
<default>
<files>ES6ArrayUseConstructor.js</files>
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