sway

commit e8c472aee95ce1cbb6feef04d970327d1717d7fc
parent ab42874f71bceeaf0357dbf3020f1cb73fb2c738
Author: Brian Ashworth <bosrsf04@gmail.com>
Date:   Wed, 13 Feb 2019 22:38:30 -0500

seatop_move_tiling: do not move to descendant

In seatop_move_tiling, it is possible to cause a stack overflow by
dragging a container into one of its descendants. This disables the
ability to move into a descendant.

Diffstat:
M
sway/input/seatop_move_tiling.c
 | 
3
++-

1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sway/input/seatop_move_tiling.c b/sway/input/seatop_move_tiling.c
@@ -164,7 +164,8 @@ static void handle_motion_postthreshold(struct sway_seat *seat) {
 
 	// Use the hovered view - but we must be over the actual surface
 	con = node->sway_container;
-	if (!con->view->surface || node == &e->con->node) {
+	if (!con->view->surface || node == &e->con->node
+			|| node_has_ancestor(node, &e->con->node)) {
 		e->target_node = NULL;
 		e->target_edge = WLR_EDGE_NONE;
 		return;