[Webkit-unassigned] [Bug 201804] New: [JSC] Leak of uint32_t arrays in testFastForwardCopy32()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=201804

            Bug ID: 201804
           Summary: [JSC] Leak of uint32_t arrays in
                    testFastForwardCopy32()
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddkilzer at webkit.org

Leak of uint32_t arrays in testFastForwardCopy32() due to `continue` statements not releasing memory allocated by `new`.

void testFastForwardCopy32()
{
#if CPU(X86_64)
    for (const bool aligned : { true, false }) {
        for (const bool overlap : { false, true }) {
            for (size_t arrsize : { 1, 4, 5, 6, 8, 10, 12, 16, 20, 40, 100, 1000}) {
                size_t overlapAmount = 5;

                uint32_t* arr1, *arr2;

                if (overlap) {
                    arr1 = new uint32_t[arrsize * 2];
                    arr2 = arr1 + (arrsize - overlapAmount);
                } else {
                    arr1 = new uint32_t[arrsize];
                    arr2 = new uint32_t[arrsize];
                }

                if (!aligned && arrsize < 3)
                    continue;  // LEAKS!
                if (overlap && arrsize <= overlapAmount + 3)
                    continue;  // LEAKS!

                [...]

                if (!overlap) {
                    delete[] arr1;
                    delete[] arr2;
                } else
                    delete[] arr1;
            }
        }
    }
#endif
}

<https://trac.webkit.org/browser/webkit/trunk/Source/JavaScriptCore/b3/testb3_8.cpp>

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