diff --git a/tests/test-empty-file b/tests/test-empty-file
new file mode 100755
--- /dev/null
+++ b/tests/test-empty-file
@@ -0,0 +1,25 @@
+#!/bin/sh
+
+hg init a
+cd a
+touch empty1
+hg add empty1
+hg commit -m 'add empty1' -d '1000000 0'
+
+touch empty2
+hg add empty2
+hg commit -m 'add empty2' -d '1000000 0'
+
+hg up -C 0
+touch empty3
+hg add empty3
+hg commit -m 'add empty3' -d '1000000 0'
+
+hg heads
+
+hg merge 1
+# before changeset 05257fd28591, we didn't notice the 
+# empty file that came from rev 1.
+hg status
+hg commit -m merge -d '1000000 0'
+hg manifest tip