Created attachment 39457 [details]
Crash samples

Recently we discovered a bug in poi (5.2.3).
Due to the lack of contextual knowledge in the poi library, we cannot thoroughly fix some bugs hence we look forward to any proposed plan from the developers in fixing these bugs.

# Crash Stack
```
('org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate.<init>', 'FormulaRecordAggregate.java:73'),
Exception in thread "main" java.lang.IllegalArgumentException: Unexpected base token id (-64)
        at org.apache.poi.ss.formula.ptg.Ptg.createBasePtg(Ptg.java:170)
        at org.apache.poi.ss.formula.ptg.Ptg.createPtg(Ptg.java:92)
        at org.apache.poi.ss.formula.ptg.Ptg.readTokens(Ptg.java:66)
        at org.apache.poi.ss.formula.Formula.getTokens(Formula.java:89)
        at org.apache.poi.hssf.record.FormulaRecord.getParsedExpression(FormulaRecord.java:213)
        at org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate.handleMissingSharedFormulaRecord(FormulaRecordAggregate.java:94)
        at org.apache.poi.hssf.record.aggregates.FormulaRecordAggregate.<init>(FormulaRecordAggregate.java:73)
        at org.apache.poi.hssf.record.aggregates.ValueRecordsAggregate.construct(ValueRecordsAggregate.java:179)
        at org.apache.poi.hssf.record.aggregates.RowRecordsAggregate.<init>(RowRecordsAggregate.java:113)
        at org.apache.poi.hssf.model.InternalSheet.<init>(InternalSheet.java:189)
        at org.apache.poi.hssf.model.InternalSheet.createSheet(InternalSheet.java:128)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:382)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:431)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:411)
        at com.test.Entry.main(Entry.java:34)
```

```
('org.apache.poi.hssf.record.common.UnicodeString.<init>', 'UnicodeString.java:96'),
Exception in thread "main" java.lang.IllegalArgumentException: Cannot create a ChainLoopDetector with negative size, but had: -2147483648
        at org.apache.poi.poifs.filesystem.BlockStore$ChainLoopDetector.<init>(BlockStore.java:89)
        at org.apache.poi.poifs.filesystem.POIFSMiniStore.getChainLoopDetector(POIFSMiniStore.java:237)
        at org.apache.poi.poifs.filesystem.POIFSStream$StreamBlockByteBufferIterator.<init>(POIFSStream.java:195)
        at org.apache.poi.poifs.filesystem.POIFSStream.getBlockIterator(POIFSStream.java:96)
        at org.apache.poi.poifs.filesystem.POIFSStream.iterator(POIFSStream.java:87)
        at org.apache.poi.poifs.filesystem.POIFSDocument.getBlockIterator(POIFSDocument.java:177)
        at org.apache.poi.poifs.filesystem.DocumentInputStream.<init>(DocumentInputStream.java:92)
        at org.apache.poi.poifs.filesystem.DirectoryNode.createDocumentInputStream(DirectoryNode.java:160)
        at org.apache.poi.poifs.filesystem.DirectoryNode.createDocumentInputStream(DirectoryNode.java:137)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:369)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:431)
        at org.apache.poi.hssf.usermodel.HSSFWorkbook.<init>(HSSFWorkbook.java:411)
        at com.test.Entry.main(Entry.java:34)
```

# Test Program

```
package com.test;
import java.io.File;
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellType;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class Entry {
        public static void main (String args[]) throws IOException {
                assert args.length == 1;
                System.out.println("Testing Harness with args[0]: " + args[0]);
                try {
                        FileInputStream fis = new FileInputStream(args[0]);
                        Workbook workbook = null;
                        workbook = new HSSFWorkbook(fis);
                        int numberOfSheets = workbook.getNumberOfSheets();
                        for(int i=0; i < numberOfSheets; i++){
                                Sheet sheet = workbook.getSheetAt(i);
                                Iterator<Row> rowIterator = sheet.iterator();
                                while (rowIterator.hasNext())
                        {
                                        String name = "";
                                        String shortCode = "";
                                        Row row = rowIterator.next();
                                        Iterator<Cell> cellIterator = row.cellIterator();

                            while (cellIterator.hasNext())
                            {
                                Cell cell = cellIterator.next();
                                if (cell.getCellType() == CellType.STRING){
                                name = cell.getStringCellValue().trim();
                                System.out.println("Random data::"+ name);
                                } else if (cell.getCellType() == CellType.NUMERIC){
                                System.out.println("Random data::"+cell.getNumericCellValue());
                                }
                            }
                        } 
                        fis.close();
                        }
                } catch (IOException e) {
                        e.printStackTrace();
        }
}
```