Program: 90558
Project: 90558
Buggy source:
@SuppressWarnings("String_Node_Str") public Event createEvent(QName qname,Serializable value) throws IllegalArgumentException {
  if (isDeclaredAsPublishingEvent(qname)) {
    if (value != null && !isValueInstanceOfDefinedClass(qname,value)) {
      throw new IllegalArgumentException("String_Node_Str" + value.getClass().getCanonicalName() + "String_Node_Str");
    }
    try {
      if (value == null) {
        return new EventImpl(qname,value);
      }
 else {
        ClassLoader cl=Thread.currentThread().getContextClassLoader();
        Writer out=new StringWriter();
        Class clazz=value.getClass();
        try {
          Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
          JAXBContext jc=JAXBContext.newInstance(clazz);
          Marshaller marshaller=jc.createMarshaller();
          JAXBElement<Serializable> element=new JAXBElement<Serializable>(qname,clazz,value);
          marshaller.marshal(element,out);
        }
  finally {
          Thread.currentThread().setContextClassLoader(cl);
        }
        return new EventImpl(qname,out.toString());
      }
    }
 catch (    JAXBException e) {
      LOG.error("String_Node_Str",e);
    }
catch (    FactoryConfigurationError e) {
      LOG.warn(e.getMessage(),e);
    }
  }
  return null;
}

Fixed version (ground truth):
@SuppressWarnings("String_Node_Str") public Event createEvent(QName qname,Serializable value) throws IllegalArgumentException {
  if (LOG.isDebugEnabled()) {
    StringBuilder txt=new StringBuilder(128);
    txt.append("String_Node_Str").append(qname.toString());
    txt.append("String_Node_Str").append((value == null) ? "String_Node_Str" : value.getClass().getCanonicalName());
    LOG.debug(txt.toString());
  }
  if (isDeclaredAsPublishingEvent(qname)) {
    if (value != null && !isValueInstanceOfDefinedClass(qname,value)) {
      throw new IllegalArgumentException("String_Node_Str" + value.getClass().getCanonicalName() + "String_Node_Str");
    }
    try {
      if (value == null) {
        return new EventImpl(qname,value);
      }
 else {
        boolean debug=false;
        if (LOG.isDebugEnabled() && (value instanceof HashMap)) {
          debug=true;
          StringBuilder txt=new StringBuilder(128);
          txt.append("String_Node_Str");
          Map<String,String[]> pmap=(HashMap<String,String[]>)value;
          for (          String name : pmap.keySet()) {
            txt.append("String_Node_Str").append(name);
            txt.append("String_Node_Str").append(Arrays.toString(pmap.get(name)));
          }
          LOG.debug(txt.toString());
        }
        ClassLoader cl=Thread.currentThread().getContextClassLoader();
        Writer out=new StringWriter();
        @SuppressWarnings("String_Node_Str") Class clazz=value.getClass();
        try {
          Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());
          JAXBContext jc=JAXBContext.newInstance(clazz);
          Marshaller marshaller=jc.createMarshaller();
          JAXBElement<Serializable> element=new JAXBElement<Serializable>(qname,clazz,value);
          marshaller.marshal(element,out);
        }
  finally {
          Thread.currentThread().setContextClassLoader(cl);
        }
        if (debug) {
          LOG.debug("String_Node_Str" + out.toString());
        }
        return new EventImpl(qname,out.toString());
      }
    }
 catch (    JAXBException e) {
      LOG.error("String_Node_Str",e);
    }
catch (    FactoryConfigurationError e) {
      LOG.warn(e.getMessage(),e);
    }
  }
  return null;
}