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Clear stale pane references correctly when respawning windows, GitHub

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issue 5757 from Alejandro Pacheco.
This commit is contained in:
nicm
2026-10-16 14:26:08 +00:00
committed by tmux update bot
parent cef0dd19a8
commit 98691297e1
3 changed files with 33 additions and 15 deletions
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12
screen-redraw.c
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: screen-redraw.c,v 1.169 2026/10/16 07:59:06 nicm Exp $ */
/* $OpenBSD: screen-redraw.c,v 1.170 2026/10/16 14:26:08 nicm Exp $ */
/*
* Copyright (c) 2026 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -1096,11 +1096,17 @@ redraw_client_has_window(struct client *c, struct window *w)
return (c->redraw_scene != NULL && c->redraw_scene->w == w);
}
/* Mark a window's cached redraw scenes as out of date. */
/*
* Mark a window's cached redraw scenes as out of date. Generations are unique
* across all windows so a scene can never match a new window that reuses the
* address of a freed one.
*/
void
redraw_invalidate_scene(struct window *w)
{
w->redraw_scene_generation++;
static uint64_t next_generation;
w->redraw_scene_generation = ++next_generation;
}
/* Free all pending damage for a window. */

3
spawn.c
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: spawn.c,v 1.57 2026/10/08 07:50:05 nicm Exp $ */
/* $OpenBSD: spawn.c,v 1.58 2026/10/16 14:26:08 nicm Exp $ */
/*
* Copyright (c) 2019 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -142,6 +142,7 @@ spawn_window(struct spawn_context *sc, char **cause)
}
}
window_unzoom(w, 1);
sc->wp0 = TAILQ_FIRST(&w->panes);
TAILQ_REMOVE(&w->panes, sc->wp0, entry);

33
window.c
View File

@@ -1,4 +1,4 @@
/* $OpenBSD: window.c,v 1.387 2026/10/16 11:34:49 bket Exp $ */
/* $OpenBSD: window.c,v 1.388 2026/10/16 14:26:08 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -447,6 +447,7 @@ window_create(u_int sx, u_int sy, u_int xpixel, u_int ypixel)
w->id = next_window_id++;
RB_INSERT(windows, &windows, w);
redraw_invalidate_scene(w);
if (gettimeofday(&w->creation_time, NULL) != 0)
fatal("gettimeofday failed");
@@ -1189,6 +1190,19 @@ window_add_pane(struct window *w, struct window_pane *other, u_int hlimit,
return (wp);
}
static void
window_forget_pane(struct window *w, struct window_pane *wp)
{
if (wp == marked_pane.wp)
server_clear_marked();
if (wp == w->modal_last)
w->modal_last = NULL;
if (wp == w->was_zoomed)
w->was_zoomed = NULL;
window_pane_stack_remove(&w->last_panes, wp);
redraw_invalidate_scene(w);
}
void
window_lost_pane(struct window *w, struct window_pane *wp)
{
@@ -1196,14 +1210,8 @@ window_lost_pane(struct window *w, struct window_pane *wp)
log_debug("%s: @%u pane %%%u", __func__, w->id, wp->id);
if (wp == marked_pane.wp)
server_clear_marked();
if (wp == w->modal_last)
w->modal_last = NULL;
if (wp == w->was_zoomed)
w->was_zoomed = NULL;
window_forget_pane(w, wp);
window_pane_stack_remove(&w->last_panes, wp);
if (wp == w->active) {
lastwp = NULL;
if (wp == w->modal) {
@@ -1226,10 +1234,8 @@ window_lost_pane(struct window *w, struct window_pane *wp)
window_fire_pane_changed(w, w->active, wp);
window_update_focus(w);
}
} else if (wp == w->modal) {
} else if (wp == w->modal)
w->modal = w->modal_last = NULL;
}
redraw_invalidate_scene(w);
}
void
@@ -1357,6 +1363,11 @@ window_destroy_panes(struct window *w)
while (!TAILQ_EMPTY(&w->panes)) {
wp = TAILQ_FIRST(&w->panes);
window_forget_pane(w, wp);
if (wp == w->active)
w->active = NULL;
if (wp == w->modal)
w->modal = NULL;
TAILQ_REMOVE(&w->panes, wp, entry);
TAILQ_REMOVE(&w->z_index, wp, zentry);
window_pane_destroy(wp);