commit 7b94e77132eabdf0e43abca57e2ffeb961545174
author Bram Moolenaar <Bram@vim.org> Mon Jan 06 21:03:24 2020 +0100
committer Bram Moolenaar <Bram@vim.org> Mon Jan 06 21:03:24 2020 +0100
tree 61c26382aba1bb738c2a88a08345b6bcd009a097
parent a1353b5352f0797fc651a0dd363876f1c2fa60c5

patch 8.2.0093: win_splitmove() can make Vim hang

Problem:    win_splitmove() can make Vim hang.
Solution:   Check windows exists in the current tab page. (closes #5444)

src/evalwindow.c

diff --git a/src/evalwindow.c b/src/evalwindow.c
index 34d202e..672bfc1 100644
--- a/src/evalwindow.c
+++ b/src/evalwindow.c
@@ -808,7 +808,8 @@
     wp = find_win_by_nr_or_id(&argvars[0]);
     targetwin = find_win_by_nr_or_id(&argvars[1]);
 
-    if (wp == NULL || targetwin == NULL || wp == targetwin)
+    if (wp == NULL || targetwin == NULL || wp == targetwin
+	    || !win_valid(wp) || !win_valid(targetwin))
     {
         emsg(_(e_invalwindow));
 	rettv->vval.v_number = -1;