1 files changed, 1 insertions, 0 deletions
diff --git a/9.c b/9.c
index d0c6a9f..bd19cae 100644
--- a/9.c
+++ b/9.c
@@ -50,6 +50,7 @@ main()
 	int ntails = 0;
 
 	tsearch(tail, &tails, point_tcmp);
+	tail = point_copy(tail);
 	++ntails;
 	fprintf(stderr, "Tail visiting %d,%d\n", tail->x, tail->y);