From 561902ca2b075461d98a33d86bb4bd8d97ad0cd4 Mon Sep 17 00:00:00 2001
From: flywind <43030857+xflywind@users.noreply.github.com>
Date: Fri, 13 Nov 2020 18:57:56 +0800
Subject: [PATCH] close #2771(add testcase for #2771) (#15932)

(cherry picked from commit 7d51ad96e9add19c45b3c679f30fcb70d7fbe138)
---
 tests/iter/t2771.nim | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 tests/iter/t2771.nim

diff --git a/tests/iter/t2771.nim b/tests/iter/t2771.nim
new file mode 100644
index 0000000000..49befb0a97
--- /dev/null
+++ b/tests/iter/t2771.nim
@@ -0,0 +1,21 @@
+template t1(i: int): int=
+  i+1
+template t2(i: int): int=
+  i+1
+
+doAssert t1(10).t2() == 12
+
+
+template it1(i: int): iterator(): int =
+  iterator result(): int {.closure, gensym.} =
+    yield i+1
+  result
+
+template it2(iter: iterator(): int): iterator(): int =
+  iterator result(): int {.closure, gensym.} =
+    yield iter()+1
+  result
+
+let x2 = it1(10).it2()
+
+doAssert x2() == 12