@@ -32,31 +32,42 @@
  * @brief An exception indicating that joining a thread failed.
  */
 @interface OFThreadJoinFailedException: OFException
 {
 	OFThread *_thread;
+	int _errNo;
 }
 
 /*!
  * @brief The thread which could not be joined.
  */
 @property OF_NULLABLE_PROPERTY (readonly, nonatomic) OFThread *thread;
 
+/*!
+ * @brief The errno of the error that occurred.
+ */
+@property (readonly, nonatomic) int errNo;
+
 /*!
  * @brief Creates a new, autoreleased thread join failed exception.
  *
  * @param thread The thread which could not be joined
+ * @param errNo The errno of the error that occurred
  * @return A new, autoreleased thread join failed exception
  */
-+ (instancetype)exceptionWithThread: (nullable OFThread *)thread;
++ (instancetype)exceptionWithThread: (nullable OFThread *)thread
+			      errNo: (int)errNo;
 
 /*!
  * @brief Initializes an already allocated thread join failed exception.
  *
  * @param thread The thread which could not be joined
+ * @param errNo The errno of the error that occurred
  * @return An initialized thread join failed exception
  */
 - (instancetype)initWithThread: (nullable OFThread *)thread
-    OF_DESIGNATED_INITIALIZER;
+			 errNo: (int)errNo OF_DESIGNATED_INITIALIZER;
+
+- (instancetype)init OF_UNAVAILABLE;
 @end
 
 OF_ASSUME_NONNULL_END