# HG changeset patch
# User Bram Moolenaar <Bram@vim.org>
# Date 1667384331 -3600
# Node ID 62a42d860d87012cfd26cd4487de942002422fa3
# Parent  435e8155d5cb294ebf96ad8670f779adf9b77b94
patch 9.0.0820: memory leak with empty shell command

Commit: https://github.com/vim/vim/commit/86e6717ace4f5e00eaeb84b59e3fc92bca548155
Author: Bram Moolenaar <Bram@vim.org>
Date:   Mon Oct 31 12:24:12 2022 +0000

    patch 9.0.0820: memory leak with empty shell command

    Problem:    Memory leak with empty shell command.
    Solution:   Free the empty string.

diff --git a/src/errors.h b/src/errors.h
--- a/src/errors.h
+++ b/src/errors.h
@@ -3330,4 +3330,6 @@ EXTERN char e_loop_nesting_too_deep[]
 	INIT(= N_("E1306: Loop nesting too deep"));
 EXTERN char e_argument_nr_trying_to_modify_const_str[]
 	INIT(= N_("E1307: Argument %d: Trying to modify a const %s"));
+EXTERN char e_cannot_resize_window_in_another_tab_page[]
+	INIT(= N_("E1308: Cannot resize a window in another tab page"));
 #endif
diff --git a/src/evalwindow.c b/src/evalwindow.c
--- a/src/evalwindow.c
+++ b/src/evalwindow.c
@@ -914,6 +914,11 @@ f_win_move_statusline(typval_T *argvars,
     wp = find_win_by_nr_or_id(&argvars[0]);
     if (wp == NULL || win_valid_popup(wp))
 	return;
+    if (!win_valid(wp))
+    {
+	emsg(_(e_cannot_resize_window_in_another_tab_page));
+	return;
+    }
 
     offset = (int)tv_get_number(&argvars[1]);
     win_drag_status_line(wp, offset);
diff --git a/src/testdir/test_window_cmd.vim b/src/testdir/test_window_cmd.vim
--- a/src/testdir/test_window_cmd.vim
+++ b/src/testdir/test_window_cmd.vim
@@ -1545,23 +1545,33 @@ func Test_win_move_statusline()
     call assert_true(id->win_move_statusline(-offset))
     call assert_equal(h, winheight(id))
   endfor
+
   " check that win_move_statusline doesn't error with offsets beyond moving
   " possibility
   call assert_true(win_move_statusline(id, 5000))
   call assert_true(winheight(id) > h)
   call assert_true(win_move_statusline(id, -5000))
   call assert_true(winheight(id) < h)
+
   " check that win_move_statusline returns false for an invalid window
   wincmd =
   let h = winheight(0)
   call assert_false(win_move_statusline(-1, 1))
   call assert_equal(h, winheight(0))
+
   " check that win_move_statusline returns false for a popup window
   let id = popup_create(['hello', 'world'], {})
   let h = winheight(id)
   call assert_false(win_move_statusline(id, 1))
   call assert_equal(h, winheight(id))
   call popup_close(id)
+
+  " check that using another tabpage fails without crash
+  let id = win_getid()
+  tabnew
+  call assert_fails('call win_move_statusline(id, -1)', 'E1308:')
+  tabclose
+
   %bwipe!
 endfunc
 
diff --git a/src/version.c b/src/version.c
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@ static char *(features[]) =
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    821,
+/**/
     820,
 /**/
     819,