From 98805546dbcb738b84a6a23b231b3da7019af0f5 Mon Sep 17 00:00:00 2001
From: bung87 <crc32@qq.com>
Date: Wed, 2 Aug 2023 18:05:29 +0800
Subject: [PATCH] add test case

---
 tests/gc/t22173.nim | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 tests/gc/t22173.nim

diff --git a/tests/gc/t22173.nim b/tests/gc/t22173.nim
new file mode 100644
index 000000000000..3fa3cc5038c9
--- /dev/null
+++ b/tests/gc/t22173.nim
@@ -0,0 +1,20 @@
+discard """
+  cmd: '''nim c --gc:refc -r $file'''
+"""
+const Memo = 100 * 1024
+
+proc fff(v: sink string): iterator(): char =
+  return iterator(): char =
+    for c in v:
+      yield c
+
+var tmp = newString(Memo)
+
+let iter = fff(move(tmp))
+
+while true:
+  let v = iter()
+  if finished(iter):
+    break
+
+doAssert getOccupiedMem() < Memo * 3