From 2c7080bf1ceef4a7779644fd428b2386a0676794 Mon Sep 17 00:00:00 2001
From: Bram Moolenaar <Bram@vim.org>
Date: Sat, 6 Feb 2021 19:19:42 +0100
Subject: patch 8.2.2474: using freed memory when window is closed by
 autocommand

Problem:    Using freed memory when window is closed by autocommand.
            (houyunsong)
Solution:   Check the window pointer is still valid.
---
 src/quickfix.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'src/quickfix.c')

diff --git a/src/quickfix.c b/src/quickfix.c
index 742a1ee71..910c806f1 100644
--- a/src/quickfix.c
+++ b/src/quickfix.c
@@ -2603,6 +2603,8 @@ qflist_valid(win_T *wp, int_u qf_id)
 
     if (wp != NULL)
     {
+	if (!win_valid(wp))
+	    return FALSE;
 	qi = GET_LOC_LIST(wp);	    // Location list
 	if (qi == NULL)
 	    return FALSE;
-- 
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