evbuffer_new and bufferevent_new can both fail (when malloc fails) and

return NULL. GitHub issue 1547.

cmd-pipe-pane.c

@@ -166,6 +166,8 @@ cmd_pipe_pane_exec(struct cmd *self, struct cmdq_item *item)
 		    cmd_pipe_pane_write_callback,
 		    cmd_pipe_pane_error_callback,
 		    wp);
+		if (wp->pipe_event == NULL)
+			fatalx("out of memory");
 		if (out)
 			bufferevent_enable(wp->pipe_event, EV_WRITE);
 		if (in)

control-notify.c

@@ -47,6 +47,8 @@ control_notify_input(struct client *c, struct window_pane *wp,
 	 */
 	if (winlink_find_by_window(&c->session->windows, wp->window) != NULL) {
 		message = evbuffer_new();
+		if (message == NULL)
+			fatalx("out of memory");
 		evbuffer_add_printf(message, "%%output %%%u ", wp->id);
 		for (i = 0; i < len; i++) {
 			if (buf[i] < ' ' || buf[i] == '\\')

format.c

@@ -573,6 +573,8 @@ format_cb_pane_tabs(struct format_tree *ft, struct format_entry *fe)
 		return;
 
 	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
 	for (i = 0; i < wp->base.grid->sx; i++) {
 		if (!bit_test(wp->base.tabs, i))
 			continue;
@@ -603,6 +605,8 @@ format_cb_session_group_list(struct format_tree *ft, struct format_entry *fe)
 		return;
 
 	buffer = evbuffer_new();
+	if (buffer == NULL)
+		fatalx("out of memory");
 	TAILQ_FOREACH(loop, &sg->sessions, gentry) {
 		if (EVBUFFER_LENGTH(buffer) > 0)
 			evbuffer_add(buffer, ",", 1);

input.c

@@ -767,6 +767,8 @@ input_init(struct window_pane *wp)
 	ictx->input_buf = xmalloc(INPUT_BUF_START);
 
 	ictx->since_ground = evbuffer_new();
+	if (ictx->since_ground == NULL)
+		fatalx("out of memory");
 
 	evtimer_set(&ictx->timer, input_timer_callback, ictx);
 

job.c

@@ -155,6 +155,8 @@ job_run(const char *cmd, struct session *s, const char *cwd,
 
 	job->event = bufferevent_new(job->fd, job_read_callback,
 	    job_write_callback, job_error_callback, job);
+	if (job->event == NULL)
+		fatalx("out of memory");
 	bufferevent_enable(job->event, EV_READ|EV_WRITE);
 
 	log_debug("run job %p: %s, pid %ld", job, job->cmd, (long) job->pid);

server-client.c

@@ -186,8 +186,14 @@ server_client_create(int fd)
 	TAILQ_INIT(&c->queue);
 
 	c->stdin_data = evbuffer_new();
+	if (c->stdin_data == NULL)
+		fatalx("out of memory");
 	c->stdout_data = evbuffer_new();
+	if (c->stdout_data == NULL)
+		fatalx("out of memory");
 	c->stderr_data = evbuffer_new();
+	if (c->stderr_data == NULL)
+		fatalx("out of memory");
 
 	c->tty.fd = -1;
 	c->title = NULL;

tty.c

@@ -258,9 +258,13 @@ tty_open(struct tty *tty, char **cause)
 	event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
 	    tty_read_callback, tty);
 	tty->in = evbuffer_new();
+	if (tty->in == NULL)
+		fatal("out of memory");
 
 	event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
 	tty->out = evbuffer_new();
+	if (tty->out == NULL)
+		fatal("out of memory");
 
 	evtimer_set(&tty->timer, tty_timer_callback, tty);
 

window.c

@@ -997,6 +997,8 @@ window_pane_spawn(struct window_pane *wp, int argc, char **argv,
 
 	wp->event = bufferevent_new(wp->fd, window_pane_read_callback, NULL,
 	    window_pane_error_callback, wp);
+	if (wp->event == NULL)
+		fatalx("out of memory");
 
 	bufferevent_setwatermark(wp->event, EV_READ, 0, READ_SIZE);
 	bufferevent_enable(wp->event, EV_READ|EV_WRITE);