inline BidiRun* RenderBlock::handleTrailingSpaces(BidiRunList<BidiRun>& bidiRuns, BidiContext* currentContext)
{
    if (!bidiRuns.runCount()
        || !bidiRuns.logicallyLastRun()->m_object->style()->breakOnlyAfterWhiteSpace()
        || !bidiRuns.logicallyLastRun()->m_object->style()->autoWrap())
        return 0;

    BidiRun* trailingSpaceRun = bidiRuns.logicallyLastRun();
    RenderObject* lastObject = trailingSpaceRun->m_object;
    if (!lastObject->isText())
        return 0;

    RenderText* lastText = toRenderText(lastObject);
    int firstSpace;
    if (lastText->is8Bit())
        firstSpace = findFirstTrailingSpace(lastText, lastText->characters8(), trailingSpaceRun->start(), trailingSpaceRun->stop());
    else
        firstSpace = findFirstTrailingSpace(lastText, lastText->characters16(), trailingSpaceRun->start(), trailingSpaceRun->stop());

    if (firstSpace == trailingSpaceRun->stop())
        return 0;

    TextDirection direction = style()->direction();
    bool shouldReorder = trailingSpaceRun != (direction == LTR ? bidiRuns.lastRun() : bidiRuns.firstRun());
    if (firstSpace != trailingSpaceRun->start()) {
        BidiContext* baseContext = currentContext;
        while (BidiContext* parent = baseContext->parent())
            baseContext = parent;

        BidiRun* newTrailingRun = new BidiRun(firstSpace, trailingSpaceRun->m_stop, trailingSpaceRun->m_object, baseContext, OtherNeutral);
        trailingSpaceRun->m_stop = firstSpace;
        if (direction == LTR)
            bidiRuns.addRun(newTrailingRun);
        else
            bidiRuns.prependRun(newTrailingRun);
        trailingSpaceRun = newTrailingRun;
        return trailingSpaceRun;
    }
    if (!shouldReorder)
        return trailingSpaceRun;

    if (direction == LTR) {
        bidiRuns.moveRunToEnd(trailingSpaceRun);
        trailingSpaceRun->m_level = 0;
    } else {
        bidiRuns.moveRunToBeginning(trailingSpaceRun);
        trailingSpaceRun->m_level = 1;
    }
    return trailingSpaceRun;
}

This vulnerability category highlights issues in resource management where failures to properly release memory, file handles, or other resources can degrade system performance or enable denial-of-service conditions.