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patch 8.0.0782: using freed memory in quickfix code

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Problem:    Using freed memory in quickfix code. (Dominique Pelle)
Solution:   Handle a help window differently. (Yegappan Lakshmanan)
This commit is contained in:
Bram Moolenaar
2017-07-27 22:03:50 +02:00
parent ab6eec3887
commit d28cc3f55d
7 changed files with 44 additions and 14 deletions
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6
src/window.c
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@@ -2314,7 +2314,7 @@ win_close(win_T *win, int free_buf)
/* When closing the help window, try restoring a snapshot after closing
* the window. Otherwise clear the snapshot, it's now invalid. */
if (win->w_buffer != NULL && win->w_buffer->b_help)
if (bt_help(win->w_buffer))
help_window = TRUE;
else
clear_snapshot(curtab, SNAP_HELP_IDX);
@@ -2397,7 +2397,7 @@ win_close(win_T *win, int free_buf)
&& (last_window() || curtab != prev_curtab
|| close_last_window_tabpage(win, free_buf, prev_curtab)))
{
/* Autocommands have close all windows, quit now. Restore
/* Autocommands have closed all windows, quit now. Restore
* curwin->w_buffer, otherwise writing viminfo may fail. */
if (curwin->w_buffer == NULL)
curwin->w_buffer = curbuf;
@@ -6479,7 +6479,7 @@ only_one_window(void)
FOR_ALL_WINDOWS(wp)
if (wp->w_buffer != NULL
&& (!((wp->w_buffer->b_help && !curbuf->b_help)
&& (!((bt_help(wp->w_buffer) && !bt_help(curbuf))
# ifdef FEAT_QUICKFIX
|| wp->w_p_pvw
# endif