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.
This commit is contained in:
Brian Ashworth 2019-02-13 22:38:30 -05:00 committed by emersion
parent ab42874f71
commit e8c472aee9

View File

@ -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;