1 files changed, 4 insertions, 2 deletions

diff --git a/src/alloc.c b/src/alloc.c
index 350fec25a02..0ed5b9346f6 100644
--- a/src/alloc.c
+++ b/src/alloc.c
@@ -6122,11 +6122,13 @@ garbage_collect (void)
 
   gc_in_progress = 0;
 
-  unblock_input ();
-
   consing_until_gc = gc_threshold
     = consing_threshold (gc_cons_threshold, Vgc_cons_percentage, 0);
 
+  /* Unblock *after* re-setting `consing_until_gc` in case `unblock_input`
+     signals an error (see bug#43389).  */
+  unblock_input ();
+
   if (garbage_collection_messages && NILP (Vmemory_full))
     {
       if (message_p || minibuf_level > 0)