1 files changed, 3 insertions, 0 deletions

diff --git a/src/thread.h b/src/thread.h
index c10e5ecb758..922eea62178 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -52,6 +52,9 @@ struct thread_state
   /* The thread's function.  */
   Lisp_Object function;
 
+  /* The thread's result, if function has finished.  */
+  Lisp_Object result;
+
   /* If non-nil, this thread has been signaled.  */
   Lisp_Object error_symbol;
   Lisp_Object error_data;