Program: 143781
Project: 143781
Buggy source:
public Object executeMethod(String context,String methodname,Object[] arguments,final boolean async) throws Exception {
  if (application.getSolution() != null) {
    final MethodExecutor method=new MethodExecutor(context,methodname,arguments,async);
synchronized (method) {
      if (application.isEventDispatchThread() && !async) {
        application.invokeAndWait(method);
        Object retval=method.getRetval();
        if (retval instanceof Exception) {
          throw (Exception)retval;
        }
        return retval;
      }
 else {
        application.getScheduledExecutor().execute(new Runnable(){
          public void run(){
            if (!async && !application.isEventDispatchThread()) {
              if (application.getScriptEngine() instanceof IScriptSupport && ((IScriptSupport)application.getScriptEngine()).isAlreadyExecutingFunctionInDebug()) {
                method.run();
                return;
              }
            }
            if (async) {
              application.invokeLater(method);
            }
 else {
              application.invokeAndWait(method);
            }
          }
        }
);
        if (!async) {
          Object retval;
          try {
            method.wait();
            retval=method.getRetval();
          }
 catch (          InterruptedException e) {
            retval=e;
            Debug.error(e);
          }
          if (retval instanceof Exception) {
            throw (Exception)retval;
          }
          return retval;
        }
      }
    }
  }
  return null;
}

Fixed version (ground truth):
public Object executeMethod(String context,String methodname,Object[] arguments,final boolean async) throws Exception {
  if (application.getSolution() != null) {
    final MethodExecutor method=new MethodExecutor(context,methodname,arguments,async);
synchronized (method) {
      if (application.isEventDispatchThread() && !async && application == J2DBGlobals.getServiceProvider()) {
        application.invokeAndWait(method);
        Object retval=method.getRetval();
        if (retval instanceof Exception) {
          throw (Exception)retval;
        }
        return retval;
      }
 else {
        application.getScheduledExecutor().execute(new Runnable(){
          public void run(){
            if (!async && !application.isEventDispatchThread()) {
              if (application.getScriptEngine() instanceof IScriptSupport && ((IScriptSupport)application.getScriptEngine()).isAlreadyExecutingFunctionInDebug()) {
                method.run();
                return;
              }
            }
            if (async) {
              application.invokeLater(method);
            }
 else {
              application.invokeAndWait(method);
            }
          }
        }
);
        if (!async) {
          Object retval;
          try {
            method.wait();
            retval=method.getRetval();
          }
 catch (          InterruptedException e) {
            retval=e;
            Debug.error(e);
          }
          if (retval instanceof Exception) {
            throw (Exception)retval;
          }
          return retval;
        }
      }
    }
  }
  return null;
}