Program: 173816
Project: 173816
Buggy source:
/** 
 * Buy a start item against the base price.
 * @param playerName Name of the buying player.
 * @param itemName Name of the bought start item.
 * @param sharePrice If nonzero: share price if item contains a President'sshare
 * @return False in case of any errors.
 */
protected boolean buy(String playerName,BuyStartItem boughtItem){
  StartItem item=boughtItem.getStartItem();
  String errMsg=null;
  Player player=getCurrentPlayer();
  int price=0;
  int sharePrice=0;
  String shareCompName="String_Node_Str";
  while (true) {
    if (!boughtItem.setSharePriceOnly()) {
      if (item.getStatus() != StartItem.BUYABLE) {
        errMsg=LocalText.getText("String_Node_Str");
        break;
      }
      price=item.getBasePrice();
      if (item.getBid() > price)       price=item.getBid();
      if (player.getFreeCash() < price) {
        errMsg=LocalText.getText("String_Node_Str");
        break;
      }
    }
    if (boughtItem.hasSharePriceToSet()) {
      shareCompName=boughtItem.getCompanyToSetPriceFor();
      sharePrice=boughtItem.getAssociatedSharePrice();
      if (sharePrice == 0) {
        errMsg=LocalText.getText("String_Node_Str",shareCompName);
        break;
      }
      if ((StockMarket.getInstance().getStartSpace(sharePrice)) == null) {
        errMsg=LocalText.getText("String_Node_Str",new String[]{Bank.format(sharePrice),shareCompName});
        break;
      }
    }
    break;
  }
  if (errMsg != null) {
    DisplayBuffer.add(LocalText.getText("String_Node_Str",new String[]{playerName,item.getName(),errMsg}));
    return false;
  }
  MoveSet.start(false);
  assignItem(player,item,price,sharePrice);
  gameManager.setPriorityPlayer();
  setNextPlayer();
  auctionItemState.set(null);
  numPasses.set(0);
  return true;
}

Fixed version (ground truth):
/** 
 * Buy a start item against the base price.
 * @param playerName Name of the buying player.
 * @param itemName Name of the bought start item.
 * @param sharePrice If nonzero: share price if item contains a President'sshare
 * @return False in case of any errors.
 */
protected boolean buy(String playerName,BuyStartItem boughtItem){
  StartItem item=boughtItem.getStartItem();
  String errMsg=null;
  Player player=getCurrentPlayer();
  int price=0;
  int sharePrice=0;
  String shareCompName="String_Node_Str";
  while (true) {
    if (!boughtItem.setSharePriceOnly()) {
      if (item.getStatus() != StartItem.BUYABLE) {
        errMsg=LocalText.getText("String_Node_Str");
        break;
      }
      price=item.getBasePrice();
      if (item.getBid() > price)       price=item.getBid();
      if (player.getFreeCash() < price) {
        errMsg=LocalText.getText("String_Node_Str");
        break;
      }
    }
 else {
      price=item.getBid();
    }
    if (boughtItem.hasSharePriceToSet()) {
      shareCompName=boughtItem.getCompanyToSetPriceFor();
      sharePrice=boughtItem.getAssociatedSharePrice();
      if (sharePrice == 0) {
        errMsg=LocalText.getText("String_Node_Str",shareCompName);
        break;
      }
      if ((StockMarket.getInstance().getStartSpace(sharePrice)) == null) {
        errMsg=LocalText.getText("String_Node_Str",new String[]{Bank.format(sharePrice),shareCompName});
        break;
      }
    }
    break;
  }
  if (errMsg != null) {
    DisplayBuffer.add(LocalText.getText("String_Node_Str",new String[]{playerName,item.getName(),errMsg}));
    return false;
  }
  MoveSet.start(false);
  assignItem(player,item,price,sharePrice);
  gameManager.setPriorityPlayer();
  setNextPlayer();
  auctionItemState.set(null);
  numPasses.set(0);
  return true;
}