Program: 27862
Project: 27862
Buggy source:
/** 
 * Given a node, get a human-readable name for the type of that node so that will be easy for the programmer to find the original declaration. For example, if SubFoo's property "bar" might have the human-readable name "Foo.prototype.bar".
 * @param n The node.
 * @param dereference If true, the type of the node will be dereferencedto an Object type, if possible.
 */
String getReadableJSTypeName(Node n,boolean dereference){
  if (n.isGetProp()) {
    ObjectType objectType=getJSType(n.getFirstChild()).dereference();
    if (objectType != null) {
      String propName=n.getLastChild().getString();
      if (objectType.getConstructor() != null && objectType.getConstructor().isInterface()) {
        objectType=FunctionType.getTopDefiningInterface(objectType,propName);
      }
 else {
        while (objectType != null && !objectType.hasOwnProperty(propName)) {
          objectType=objectType.getImplicitPrototype();
        }
      }
      if (objectType != null && (objectType.getConstructor() != null || objectType.isFunctionPrototypeType())) {
        return objectType.toString() + "String_Node_Str" + propName;
      }
    }
  }
  JSType type=getJSType(n);
  if (dereference) {
    ObjectType dereferenced=type.dereference();
    if (dereferenced != null) {
      type=dereferenced;
    }
  }
  String qualifiedName=n.getQualifiedName();
  if (type.isFunctionPrototypeType() || (type.toObjectType() != null && type.toObjectType().getConstructor() != null)) {
    return type.toString();
  }
 else   if (qualifiedName != null) {
    return qualifiedName;
  }
 else   if (type.isFunctionType()) {
    return "String_Node_Str";
  }
 else {
    return type.toString();
  }
}

Fixed version (ground truth):
/** 
 * Given a node, get a human-readable name for the type of that node so that will be easy for the programmer to find the original declaration. For example, if SubFoo's property "bar" might have the human-readable name "Foo.prototype.bar".
 * @param n The node.
 * @param dereference If true, the type of the node will be dereferencedto an Object type, if possible.
 */
String getReadableJSTypeName(Node n,boolean dereference){
  JSType type=getJSType(n);
  if (dereference) {
    ObjectType dereferenced=type.dereference();
    if (dereferenced != null) {
      type=dereferenced;
    }
  }
  if (type.isFunctionPrototypeType() || (type.toObjectType() != null && type.toObjectType().getConstructor() != null)) {
    return type.toString();
  }
  if (n.isGetProp()) {
    ObjectType objectType=getJSType(n.getFirstChild()).dereference();
    if (objectType != null) {
      String propName=n.getLastChild().getString();
      if (objectType.getConstructor() != null && objectType.getConstructor().isInterface()) {
        objectType=FunctionType.getTopDefiningInterface(objectType,propName);
      }
 else {
        while (objectType != null && !objectType.hasOwnProperty(propName)) {
          objectType=objectType.getImplicitPrototype();
        }
      }
      if (objectType != null && (objectType.getConstructor() != null || objectType.isFunctionPrototypeType())) {
        return objectType.toString() + "String_Node_Str" + propName;
      }
    }
  }
  String qualifiedName=n.getQualifiedName();
  if (qualifiedName != null) {
    return qualifiedName;
  }
 else   if (type.isFunctionType()) {
    return "String_Node_Str";
  }
 else {
    return type.toString();
  }
}