From 117a19d032b887d276103fe5c90c2062cb0a6349 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Wed, 2 Nov 2022 19:25:51 +0800
Subject: [PATCH] closes #13618; add testcase (#20734)

---
 tests/typerel/tsigmatch.nim | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 tests/typerel/tsigmatch.nim

diff --git a/tests/typerel/tsigmatch.nim b/tests/typerel/tsigmatch.nim
new file mode 100644
index 000000000..7541f2028
--- /dev/null
+++ b/tests/typerel/tsigmatch.nim
@@ -0,0 +1,6 @@
+block: # bug #13618
+  proc test(x: Natural or BackwardsIndex): int =
+    int(x)
+
+  doAssert test(^1) == 1
+  doAssert test(1) == 1