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Do not double free or leak pane on failure, from Uzair Aftab in GitHub

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issue 5316.
This commit is contained in:
nicm
2026-07-02 21:40:05 +00:00
parent 6b9b6c0b0b
commit 6ebef7450a
1 changed files with 17 additions and 6 deletions
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23
cmd-split-window.c
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@@ -82,7 +82,7 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
struct session *s = target->s;
struct winlink *wl = target->wl;
struct window *w = wl->window;
struct window_pane *wp = target->wp, *new_wp;
struct window_pane *wp = target->wp, *new_wp = NULL;
struct layout_cell *lc = NULL;
struct cmd_find_state fs;
int input, empty, is_floating, flags = 0;
@@ -168,6 +168,11 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
if ((new_wp = spawn_pane(&sc, &cause)) == NULL) {
cmdq_error(item, "create pane failed: %s", cause);
free(cause);
/*
* spawn_pane has already torn the half-built pane down (its
* fork-failure path removes the pane and destroys the layout
* cell), so new_wp is NULL and there is nothing for fail to do.
*/
goto fail;
}
@@ -220,10 +225,6 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
if (input) {
switch (window_pane_start_input(new_wp, item, &cause)) {
case -1:
server_client_remove_pane(new_wp);
if (!is_floating)
layout_close_pane(new_wp);
window_remove_pane(wp->window, new_wp);
cmdq_error(item, "%s", cause);
free(cause);
goto fail;
@@ -270,10 +271,20 @@ cmd_split_window_exec(struct cmd *self, struct cmdq_item *item)
return (CMD_RETURN_NORMAL);
fail:
/*
* If the pane was spawned before we failed, tear it down here; this
* also destroys its layout cell. spawn_pane's own failure path has
* already done this, so new_wp is NULL in that case.
*/
if (new_wp != NULL) {
server_client_remove_pane(new_wp);
if (!is_floating)
layout_close_pane(new_wp);
window_remove_pane(wp->window, new_wp);
}
if (sc.argv != NULL)
cmd_free_argv(sc.argc, sc.argv);
environ_free(sc.environ);
layout_destroy_cell(w, lc, &w->layout_root);
return (CMD_RETURN_ERROR);