patch 8.1.2197: ExitPre autocommand may cause accessing freed memory
Problem: ExitPre autocommand may cause accessing freed memory.
Solution: Check the window pointer is still valid. (closes #5093)
diff --git a/src/testdir/test_exit.vim b/src/testdir/test_exit.vim
index 3797626..99a401d 100644
--- a/src/testdir/test_exit.vim
+++ b/src/testdir/test_exit.vim
@@ -40,6 +40,7 @@
endif
call delete('Xtestout')
+ " ExitPre autocommand splits the window, so that it's no longer the last one.
let after =<< trim [CODE]
au QuitPre * call writefile(["QuitPre"], "Xtestout", "a")
au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")
@@ -58,4 +59,25 @@
\ readfile('Xtestout'))
endif
call delete('Xtestout')
+
+ " ExitPre autocommand splits and closes the window, so that there is still
+ " one window but it's a different one.
+ let after =<< trim [CODE]
+ au QuitPre * call writefile(["QuitPre"], "Xtestout", "a")
+ au ExitPre * call writefile(["ExitPre"], "Xtestout", "a")
+ augroup nasty
+ au ExitPre * split | only
+ augroup END
+ quit
+ augroup nasty
+ au! ExitPre
+ augroup END
+ quit
+ [CODE]
+
+ if RunVim([], after, '')
+ call assert_equal(['QuitPre', 'ExitPre', 'QuitPre', 'ExitPre'],
+ \ readfile('Xtestout'))
+ endif
+ call delete('Xtestout')
endfunc