patch 9.0.0598: using negative array index with negative width window
Problem: Using negative array index with negative width window.
Solution: Make sure the window width does not become negative.
diff --git a/src/testdir/test_cmdwin.vim b/src/testdir/test_cmdwin.vim
index 6a420ed..dc68894 100644
--- a/src/testdir/test_cmdwin.vim
+++ b/src/testdir/test_cmdwin.vim
@@ -404,5 +404,27 @@
bwipe!
endfunc
+" This was resulting in a window with negative width.
+" The test doesn't reproduce the illegal memory access though...
+func Test_cmdwin_split_often()
+ let lines = &lines
+ let columns = &columns
+ set t_WS=
+
+ try
+ set encoding=iso8859
+ set ruler
+ winsize 0 0
+ noremap 0 H
+ sil norm 0000000q:
+ catch /E36:/
+ endtry
+
+ bwipe!
+ set encoding=utf8
+ let &lines = lines
+ let &columns = columns
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab