* frame.c (delete_frame): Block/unblock input to overcome race

condition.

Fixes: debbugs:15475

2 files changed, 9 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 0316ca1d2f2..bab050fbfbe 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2013-09-29  Jan Djärv  <jan.h.d@swipnet.se>
+
+        * frame.c (delete_frame): Block/unblock input to overcome race
+        condition (Bug#15475).
+
 2013-09-29  Andreas Politz  <politza@hochschule-trier.de>  (tiny change)
 
         * frame.c (delete_frame): Record selected frame only after
diff --git a/src/frame.c b/src/frame.c
index f7ba23401ce..6041253e87f 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -1373,13 +1373,15 @@ delete_frame (Lisp_Object frame, Lisp_Object force)
      have called the window-system-dependent frame destruction
      routine.  */
 
-  if (FRAME_TERMINAL (f)->delete_frame_hook)
-    (*FRAME_TERMINAL (f)->delete_frame_hook) (f);
 
   {
+    block_input ();
+    if (FRAME_TERMINAL (f)->delete_frame_hook)
+      (*FRAME_TERMINAL (f)->delete_frame_hook) (f);
     struct terminal *terminal = FRAME_TERMINAL (f);
     f->output_data.nothing = 0;
     f->terminal = 0;             /* Now the frame is dead.  */
+    unblock_input ();
 
     /* If needed, delete the terminal that this frame was on.
        (This must be done after the frame is killed.)  */