Mercurial > vim
diff src/buffer.c @ 14658:9ffd7d0650c6 v8.1.0342
patch 8.1.0342: crash when a callback deletes a window that is being used
commit https://github.com/vim/vim/commit/94f01956a583223dafe24135489d0ab1100ab0ad
Author: Bram Moolenaar <Bram@vim.org>
Date: Sat Sep 1 15:30:03 2018 +0200
patch 8.1.0342: crash when a callback deletes a window that is being used
Problem: Crash when a callback deletes a window that is being used.
Solution: Do not unload a buffer that is being displayed while redrawing the
screen. Also avoid invoking callbacks while redrawing.
(closes #2107)
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sat, 01 Sep 2018 15:45:05 +0200 |
parents | b6b2f7d69c7f |
children | 0a3b9ecf7cb8 |
line wrap: on
line diff
--- a/src/buffer.c +++ b/src/buffer.c @@ -412,7 +412,28 @@ buf_hashtab_remove(buf_T *buf) hash_remove(&buf_hashtab, hi); } -static char *e_buflocked = N_("E937: Attempt to delete a buffer that is in use"); +/* + * Return TRUE when buffer "buf" can be unloaded. + * Give an error message and return FALSE when the buffer is locked or the + * screen is being redrawn and the buffer is in a window. + */ + static int +can_unload_buffer(buf_T *buf) +{ + int can_unload = !buf->b_locked; + + if (can_unload && updating_screen) + { + win_T *wp; + + FOR_ALL_WINDOWS(wp) + if (wp->w_buffer == buf) + can_unload = FALSE; + } + if (!can_unload) + EMSG(_("E937: Attempt to delete a buffer that is in use")); + return can_unload; +} /* * Close the link to a buffer. @@ -474,11 +495,9 @@ close_buffer( { if (wipe_buf || unload_buf) { - if (buf->b_locked) - { - EMSG(_(e_buflocked)); + if (!can_unload_buffer(buf)) return; - } + /* Wiping out or unloading a terminal buffer kills the job. */ free_terminal(buf); } @@ -501,11 +520,8 @@ close_buffer( /* Disallow deleting the buffer when it is locked (already being closed or * halfway a command that relies on it). Unloading is allowed. */ - if (buf->b_locked > 0 && (del_buf || wipe_buf)) - { - EMSG(_(e_buflocked)); + if ((del_buf || wipe_buf) && !can_unload_buffer(buf)) return; - } /* check no autocommands closed the window */ if (win != NULL && win_valid_any_tab(win)) @@ -1196,8 +1212,6 @@ do_bufdel( return errormsg; } -static int empty_curbuf(int close_others, int forceit, int action); - /* * Make the current buffer empty. * Used when it is wiped out and it's the last buffer. @@ -1238,6 +1252,7 @@ empty_curbuf( need_fileinfo = FALSE; return retval; } + /* * Implementation of the commands for the buffer list. * @@ -1359,11 +1374,8 @@ do_buffer( int forward; bufref_T bufref; - if (buf->b_locked) - { - EMSG(_(e_buflocked)); + if (!can_unload_buffer(buf)) return FAIL; - } set_bufref(&bufref, buf);