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-rw-r--r--server-fn.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/server-fn.c b/server-fn.c
index a166541d..59f61373 100644
--- a/server-fn.c
+++ b/server-fn.c
@@ -280,8 +280,10 @@ server_link_window(struct session *src, struct winlink *srcwl,
if (dstidx != -1)
dstwl = winlink_find_by_index(&dst->windows, dstidx);
if (dstwl != NULL) {
- if (dstwl->window == srcwl->window)
+ if (dstwl->window == srcwl->window) {
+ xasprintf(cause, "same index: %d", dstidx);
return (-1);
+ }
if (killflag) {
/*
* Can't use session_detach as it will destroy session