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-rw-r--r--sway/commands/swap.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sway/commands/swap.c b/sway/commands/swap.c
index 0e2c2d10..b978af16 100644
--- a/sway/commands/swap.c
+++ b/sway/commands/swap.c
@@ -118,6 +118,10 @@ static void container_swap(struct sway_container *con1,
output_get_active_workspace(con1->workspace->output);
struct sway_workspace *vis2 =
output_get_active_workspace(con2->workspace->output);
+ if (!sway_assert(vis1 && vis2, "con1 or con2 are on an output without a"
+ "workspace. This should not happen")) {
+ return;
+ }
char *stored_prev_name = NULL;
if (seat->prev_workspace_name) {