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patch 8.2.1905: the wininfo list may contain stale entries

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Problem:    The wininfo list may contain stale entries.
Solution:   When closing a window remove any other entry where the window
            pointer is NULL.
This commit is contained in:
Bram Moolenaar 2020-10-25 17:55:09 +01:00
parent 89b693e562
commit 4882d98339
4 changed files with 39 additions and 8 deletions
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25
src/buffer.c
View File

@ -1005,6 +1005,22 @@ free_buffer_stuff(
VIM_CLEAR(buf->b_start_fenc);
}
/*
* Free one wininfo_T.
*/
void
free_wininfo(wininfo_T *wip)
{
if (wip->wi_optset)
{
clear_winopt(&wip->wi_opt);
#ifdef FEAT_FOLDING
deleteFoldRecurse(&wip->wi_folds);
#endif
}
vim_free(wip);
}
/*
* Free the b_wininfo list for buffer "buf".
*/
@ -1017,14 +1033,7 @@ clear_wininfo(buf_T *buf)
{
wip = buf->b_wininfo;
buf->b_wininfo = wip->wi_next;
if (wip->wi_optset)
{
clear_winopt(&wip->wi_opt);
#ifdef FEAT_FOLDING
deleteFoldRecurse(&wip->wi_folds);
#endif
}
vim_free(wip);
free_wininfo(wip);
}
}

1
src/proto/buffer.pro
View File

@ -8,6 +8,7 @@ int buf_valid(buf_T *buf);
void close_buffer(win_T *win, buf_T *buf, int action, int abort_if_last, int ignore_abort);
void buf_clear_file(buf_T *buf);
void buf_freeall(buf_T *buf, int flags);
void free_wininfo(wininfo_T *wip);
void goto_buffer(exarg_T *eap, int start, int dir, int count);
void handle_swap_exists(bufref_T *old_curbuf);
char *do_bufdel(int command, char_u *arg, int addr_count, int start_bnr, int end_bnr, int forceit);

2
src/version.c
View File

@ -750,6 +750,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1905,
/**/
1904,
/**/

19
src/window.c
View File

@ -5015,7 +5015,26 @@ win_free(
FOR_ALL_BUFFERS(buf)
FOR_ALL_BUF_WININFO(buf, wip)
if (wip->wi_win == wp)
{
wininfo_T *wip2;
// If there already is an entry with "wi_win" set to NULL it
// must be removed, it would never be used.
for (wip2 = buf->b_wininfo; wip2 != NULL; wip2 = wip2->wi_next)
if (wip2->wi_win == NULL)
{
if (wip2->wi_next != NULL)
wip2->wi_next->wi_prev = wip2->wi_prev;
if (wip2->wi_prev == NULL)
buf->b_wininfo = wip2->wi_next;
else
wip2->wi_prev->wi_next = wip2->wi_next;
free_wininfo(wip2);
break;
}
wip->wi_win = NULL;
}
#ifdef FEAT_SEARCH_EXTRA
clear_matches(wp);