diff --git a/tests/test-diffdir.out b/tests/test-diffdir.out
--- a/tests/test-diffdir.out
+++ b/tests/test-diffdir.out
@@ -18,3 +18,5 @@ diff -r acd8075edac9 b
 +++ b/b
 @@ -0,0 +1,1 @@
 +123
+abort: Ambiguous identifier!
+abort: Ambiguous identifier!