From 6007a40eac60b52b3c2edb4ed6e8399c96c0f939 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Derek=20=E5=91=86?=
 <116649+derekdai@users.noreply.github.com>
Date: Sat, 12 Nov 2022 02:31:59 +0800
Subject: [PATCH] support `UncheckedArray[T]` in repr_v2.nim (#20816)

---
 lib/system/repr_v2.nim | 5 ++++-
 tests/arc/trepr.nim    | 8 ++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/system/repr_v2.nim b/lib/system/repr_v2.nim
index 60c09e0730..f6c720e2c3 100644
--- a/lib/system/repr_v2.nim
+++ b/lib/system/repr_v2.nim
@@ -189,4 +189,7 @@ proc repr*[T](x: openArray[T]): string =
   ##
   ## .. code-block:: Nim
   ##   $(@[23, 45].toOpenArray(0, 1)) == "[23, 45]"
-  collectionToRepr(x, "[", ", ", "]")
\ No newline at end of file
+  collectionToRepr(x, "[", ", ", "]")
+
+proc repr*[T](x: UncheckedArray[T]): string =
+  "[...]"
diff --git a/tests/arc/trepr.nim b/tests/arc/trepr.nim
index 50d433208b..abf28330a3 100644
--- a/tests/arc/trepr.nim
+++ b/tests/arc/trepr.nim
@@ -9,6 +9,7 @@ nil
 2
 Obj(member: ref @["hello"])
 ref (member: ref @["hello"])
+ObjUa(v: 0, a: [...])
 '''
 """
 
@@ -87,3 +88,10 @@ macro extract(): untyped =
   test(parseExpr("discard"))
   
 extract()
+
+type
+  ObjUa = ref object
+    v: int
+    a: UncheckedArray[char]
+
+echo ObjUa().repr