@@ -12,10 +12,12 @@
  * Alternatively, it may be distributed under the terms of the GNU General
  * Public License, either version 2 or 3, which can be found in the file
  * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
  * file.
  */
+
+#include <setjmp.h>
 
 #import "OFObject.h"
 
 #ifdef OF_HAVE_THREADS
 # import "threading.h"
@@ -70,10 +72,11 @@
 	} _running;
 	void *_pool;
 # ifdef OF_HAVE_BLOCKS
 	of_thread_block_t _Nullable _threadBlock;
 # endif
+	jmp_buf _exitEnv;
 	id _returnValue;
 	OFRunLoop *_Nullable _runLoop;
 	OFMutableDictionary *_threadDictionary;
 @private
 	OFString *_Nullable _name;