Program: 179375
Project: 179375
Buggy source:
/** 
 * Creates a   {@link Gson} instance based on the current configuration. This method is free ofside-effects to the GsonBuilder and hence can be called multiple times.
 * @return an instance of Gson configured with the options currently set in this builder.
 */
public Gson create(){
  List<ExclusionStrategy> strategies=new LinkedList<ExclusionStrategy>();
  strategies.add(innerClassExclusionStrategy);
  strategies.add(modifierBasedExclusionStrategy);
  if (ignoreVersionsAfter != VersionConstants.IGNORE_VERSIONS) {
    strategies.add(new VersionExclusionStrategy(ignoreVersionsAfter));
  }
  if (excludeFieldsWithoutExposeAnnotation) {
    strategies.add(new ExposeAnnotationBasedExclusionStrategy());
  }
  ExclusionStrategy exclusionStrategy=new DisjunctionExclusionStrategy(strategies);
  ObjectNavigatorFactory objectNavigatorFactory=new ObjectNavigatorFactory(exclusionStrategy,fieldNamingPolicy);
  ParameterizedTypeHandlerMap<JsonSerializer<?>> customSerializers=serializers.copyOf();
  ParameterizedTypeHandlerMap<JsonDeserializer<?>> customDeserializers=deserializers.copyOf();
  addTypeAdaptersForDate(datePattern,dateStyle,customSerializers,customDeserializers);
  customSerializers.addIfAbsent(DefaultJsonSerializers.getDefaultSerializers());
  customDeserializers.addIfAbsent(DefaultJsonDeserializers.getDefaultDeserializers());
  ParameterizedTypeHandlerMap<InstanceCreator<?>> customInstanceCreators=instanceCreators.copyOf();
  customInstanceCreators.addIfAbsent(DefaultInstanceCreators.getDefaultInstanceCreators());
  MappedObjectConstructor objConstructor=Gson.createObjectConstructor(customInstanceCreators);
  Gson gson=new Gson(objectNavigatorFactory,objConstructor,typeAdapter,formatter,serializeNulls,customSerializers,customDeserializers);
  return gson;
}

Fixed version (ground truth):
/** 
 * Creates a   {@link Gson} instance based on the current configuration. This method is free ofside-effects to the GsonBuilder and hence can be called multiple times.
 * @return an instance of Gson configured with the options currently set in this builder.
 */
public Gson create(){
  List<ExclusionStrategy> strategies=new LinkedList<ExclusionStrategy>();
  strategies.add(innerClassExclusionStrategy);
  strategies.add(modifierBasedExclusionStrategy);
  if (ignoreVersionsAfter != VersionConstants.IGNORE_VERSIONS) {
    strategies.add(new VersionExclusionStrategy(ignoreVersionsAfter));
  }
  if (excludeFieldsWithoutExposeAnnotation) {
    strategies.add(new ExposeAnnotationBasedExclusionStrategy());
  }
  ExclusionStrategy exclusionStrategy=new DisjunctionExclusionStrategy(strategies);
  ObjectNavigatorFactory objectNavigatorFactory=new ObjectNavigatorFactory(exclusionStrategy,fieldNamingPolicy);
  ParameterizedTypeHandlerMap<JsonSerializer<?>> customSerializers=serializers.copyOf();
  ParameterizedTypeHandlerMap<JsonDeserializer<?>> customDeserializers=deserializers.copyOf();
  addTypeAdaptersForDate(datePattern,dateStyle,customSerializers,customDeserializers);
  customSerializers.addIfAbsent(DefaultTypeAdapters.getDefaultSerializers());
  customDeserializers.addIfAbsent(DefaultTypeAdapters.getDefaultDeserializers());
  ParameterizedTypeHandlerMap<InstanceCreator<?>> customInstanceCreators=instanceCreators.copyOf();
  customInstanceCreators.addIfAbsent(DefaultTypeAdapters.getDefaultInstanceCreators());
  MappedObjectConstructor objConstructor=Gson.createObjectConstructor(customInstanceCreators);
  Gson gson=new Gson(objectNavigatorFactory,objConstructor,typeAdapter,formatter,serializeNulls,customSerializers,customDeserializers);
  return gson;
}