nsLineBox* lastLine = aState.mPrevLine; nsLineBox* nextLine = lastLine->mNext;
LineData* lastLine = aState.mPrevLine; LineData* nextLine = lastLine->mNext;
nsBlockFrame::PushLines(nsBlockReflowState& aState){  NS_ASSERTION(nsnull != aState.mPrevLine, "bad push");  nsLineBox* lastLine = aState.mPrevLine;  nsLineBox* nextLine = lastLine->mNext;  lastLine->mNext = nsnull;  mOverflowLines = nextLine;  // Mark all the overflow lines dirty so that they get reflowed when  // they are pulled up by our next-in-flow.  while (nsnull != nextLine) {    nextLine->MarkDirty();    nextLine = nextLine->mNext;  }  // Break frame sibling list  nsIFrame* lastFrame = lastLine->LastChild();  lastFrame->SetNextSibling(nsnull);#ifdef DEBUG  VerifyOverflowSituation();#endif}