Program: 64386
Project: 64386
Buggy source:
public void execute() throws BuildException {
  if (baseDir == null && filesets.size() == 0 && "String_Node_Str".equals(archiveType))   throw new BuildException("String_Node_Str" + "String_Node_Str");
  if (zipFile == null) {
    throw new BuildException("String_Node_Str" + archiveType + "String_Node_Str");
  }
  Vector dss=new Vector();
  if (baseDir != null)   dss.addElement(getDirectoryScanner(baseDir));
  for (int i=0; i < filesets.size(); i++) {
    FileSet fs=(FileSet)filesets.elementAt(i);
    dss.addElement(fs.getDirectoryScanner(project));
  }
  int dssSize=dss.size();
  FileScanner[] scanners=new FileScanner[dssSize + locFileSets.size()];
  dss.copyInto(scanners);
  addScanners(scanners,dssSize,locFileSets);
  if (isUpToDate(scanners,zipFile))   return;
  log("String_Node_Str" + archiveType + "String_Node_Str"+ zipFile.getAbsolutePath());
  try {
    ZipOutputStream zOut=new ZipOutputStream(new FileOutputStream(zipFile));
    try {
      if (doCompress) {
        zOut.setMethod(ZipOutputStream.DEFLATED);
      }
 else {
        zOut.setMethod(ZipOutputStream.STORED);
      }
      initZipOutputStream(zOut);
      addPrefixedFiles(locFileSets,zOut);
      for (int j=0; j < dssSize; j++) {
        addFiles(scanners[j],zOut,"String_Node_Str");
      }
    }
  finally {
      zOut.close();
    }
  }
 catch (  IOException ioe) {
    String msg="String_Node_Str" + archiveType + "String_Node_Str"+ ioe.getMessage();
    if (!zipFile.delete()) {
      msg+="String_Node_Str";
    }
    throw new BuildException(msg,ioe,location);
  }
}

Fixed version (ground truth):
public void execute() throws BuildException {
  if (baseDir == null && filesets.size() == 0 && locFileSets.size() == 0 && "String_Node_Str".equals(archiveType)) {
    throw new BuildException("String_Node_Str" + "String_Node_Str");
  }
  if (zipFile == null) {
    throw new BuildException("String_Node_Str" + archiveType + "String_Node_Str");
  }
  Vector dss=new Vector();
  if (baseDir != null)   dss.addElement(getDirectoryScanner(baseDir));
  for (int i=0; i < filesets.size(); i++) {
    FileSet fs=(FileSet)filesets.elementAt(i);
    dss.addElement(fs.getDirectoryScanner(project));
  }
  int dssSize=dss.size();
  FileScanner[] scanners=new FileScanner[dssSize + locFileSets.size()];
  dss.copyInto(scanners);
  addScanners(scanners,dssSize,locFileSets);
  if (isUpToDate(scanners,zipFile))   return;
  log("String_Node_Str" + archiveType + "String_Node_Str"+ zipFile.getAbsolutePath());
  try {
    boolean success=false;
    ZipOutputStream zOut=new ZipOutputStream(new FileOutputStream(zipFile));
    try {
      if (doCompress) {
        zOut.setMethod(ZipOutputStream.DEFLATED);
      }
 else {
        zOut.setMethod(ZipOutputStream.STORED);
      }
      initZipOutputStream(zOut);
      addPrefixedFiles(locFileSets,zOut);
      for (int j=0; j < dssSize; j++) {
        addFiles(scanners[j],zOut,"String_Node_Str");
        success=true;
      }
    }
  finally {
      try {
        if (zOut != null)         zOut.close();
      }
 catch (      IOException ex) {
        if (success)         throw ex;
      }
    }
  }
 catch (  IOException ioe) {
    String msg="String_Node_Str" + archiveType + "String_Node_Str"+ ioe.getMessage();
    if (!zipFile.delete()) {
      msg+="String_Node_Str";
    }
    throw new BuildException(msg,ioe,location);
  }
}