From 21578271bb717f7ab7b8728e9efa54c3b60ee7e4 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sun, 21 Feb 2021 19:12:47 +0100
Subject: patch 8.2.2538: crash when using Python list iterator

Problem:    Crash when using Python list iterator.
Solution:   Increment the list reference count. (closes #7886)
---
 src/if_py_both.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/if_py_both.h')

diff --git a/src/if_py_both.h b/src/if_py_both.h
index 2903b0ba9..9dbff1cbf 100644
--- a/src/if_py_both.h
+++ b/src/if_py_both.h
@@ -2815,6 +2815,7 @@ typedef struct
 ListIterDestruct(listiterinfo_T *lii)
 {
     list_rem_watch(lii->list, &lii->lw);
+    list_unref(lii->list);
     PyMem_Free(lii);
 }
 
@@ -2850,6 +2851,7 @@ ListIter(ListObject *self)
     list_add_watch(l, &lii->lw);
     lii->lw.lw_item = l->lv_first;
     lii->list = l;
+    ++l->lv_refcount;
 
     return IterNew(lii,
 	    (destructorfun) ListIterDestruct, (nextfun) ListIterNext,
-- 
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