Program: 64179
Project: 64179
Buggy source:
/** 
 * Execute inside VM.
 * @param arg one JUnitTest
 * @throws BuildException under unspecified circumstances
 * @return the results
 */
private TestResultHolder executeInVM(JUnitTest arg) throws BuildException {
  JUnitTest test=(JUnitTest)arg.clone();
  test.setProperties(getProject().getProperties());
  if (dir != null) {
    log("String_Node_Str",Project.MSG_WARN);
  }
  if (newEnvironment || null != env.getVariables()) {
    log("String_Node_Str" + "String_Node_Str",Project.MSG_WARN);
  }
  if (getCommandline().getBootclasspath() != null) {
    log("String_Node_Str",Project.MSG_WARN);
  }
  CommandlineJava.SysProperties sysProperties=getCommandline().getSystemProperties();
  if (sysProperties != null) {
    sysProperties.setSystem();
  }
  try {
    log("String_Node_Str" + System.getProperties(),Project.MSG_VERBOSE);
    if (splitJunit) {
      classLoader=(AntClassLoader)delegate.getClass().getClassLoader();
    }
 else {
      createClassLoader();
    }
    if (classLoader != null) {
      classLoader.setThreadContextLoader();
    }
    runner=delegate.newJUnitTestRunner(test,test.getHaltonerror(),test.getFiltertrace(),test.getHaltonfailure(),false,true,classLoader);
    if (summary) {
      JUnitTaskMirror.SummaryJUnitResultFormatterMirror f=delegate.newSummaryJUnitResultFormatter();
      f.setWithOutAndErr(equalsWithOutAndErr(summaryValue));
      f.setOutput(getDefaultOutput());
      runner.addFormatter(f);
    }
    runner.setPermissions(perm);
    final FormatterElement[] feArray=mergeFormatters(test);
    for (int i=0; i < feArray.length; i++) {
      FormatterElement fe=feArray[i];
      if (fe.shouldUse(this)) {
        File outFile=getOutput(fe,test);
        if (outFile != null) {
          fe.setOutfile(outFile);
        }
 else {
          fe.setOutput(getDefaultOutput());
        }
        runner.addFormatter(fe.createFormatter(classLoader));
      }
    }
    runner.run();
    TestResultHolder result=new TestResultHolder();
    result.exitCode=runner.getRetCode();
    return result;
  }
  finally {
    if (sysProperties != null) {
      sysProperties.restoreSystem();
    }
    if (classLoader != null) {
      classLoader.resetThreadContextLoader();
    }
  }
}

Fixed version (ground truth):
/** 
 * Execute inside VM.
 * @param arg one JUnitTest
 * @throws BuildException under unspecified circumstances
 * @return the results
 */
private TestResultHolder executeInVM(JUnitTest arg) throws BuildException {
  if (delegate == null) {
    setupJUnitDelegate();
  }
  JUnitTest test=(JUnitTest)arg.clone();
  test.setProperties(getProject().getProperties());
  if (dir != null) {
    log("String_Node_Str",Project.MSG_WARN);
  }
  if (newEnvironment || null != env.getVariables()) {
    log("String_Node_Str" + "String_Node_Str",Project.MSG_WARN);
  }
  if (getCommandline().getBootclasspath() != null) {
    log("String_Node_Str",Project.MSG_WARN);
  }
  CommandlineJava.SysProperties sysProperties=getCommandline().getSystemProperties();
  if (sysProperties != null) {
    sysProperties.setSystem();
  }
  try {
    log("String_Node_Str" + System.getProperties(),Project.MSG_VERBOSE);
    if (splitJunit) {
      classLoader=(AntClassLoader)delegate.getClass().getClassLoader();
    }
 else {
      createClassLoader();
    }
    if (classLoader != null) {
      classLoader.setThreadContextLoader();
    }
    runner=delegate.newJUnitTestRunner(test,test.getHaltonerror(),test.getFiltertrace(),test.getHaltonfailure(),false,true,classLoader);
    if (summary) {
      JUnitTaskMirror.SummaryJUnitResultFormatterMirror f=delegate.newSummaryJUnitResultFormatter();
      f.setWithOutAndErr(equalsWithOutAndErr(summaryValue));
      f.setOutput(getDefaultOutput());
      runner.addFormatter(f);
    }
    runner.setPermissions(perm);
    final FormatterElement[] feArray=mergeFormatters(test);
    for (int i=0; i < feArray.length; i++) {
      FormatterElement fe=feArray[i];
      if (fe.shouldUse(this)) {
        File outFile=getOutput(fe,test);
        if (outFile != null) {
          fe.setOutfile(outFile);
        }
 else {
          fe.setOutput(getDefaultOutput());
        }
        runner.addFormatter(fe.createFormatter(classLoader));
      }
    }
    runner.run();
    TestResultHolder result=new TestResultHolder();
    result.exitCode=runner.getRetCode();
    return result;
  }
  finally {
    if (sysProperties != null) {
      sysProperties.restoreSystem();
    }
    if (classLoader != null) {
      classLoader.resetThreadContextLoader();
    }
  }
}