From db9442bf84fa857ca783f09ddc80a077aa814e65 Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Tue, 7 Mar 2023 20:17:05 +0800
Subject: [PATCH] closes #8295; add a test case (#21486)

(cherry picked from commit 2f89f1eb780ab32be31dbe4074af70b587ad2f36)
---
 tests/generics/tgeneric0.nim | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/tests/generics/tgeneric0.nim b/tests/generics/tgeneric0.nim
index 44c34917d1..b5e1c4bb4e 100644
--- a/tests/generics/tgeneric0.nim
+++ b/tests/generics/tgeneric0.nim
@@ -153,3 +153,16 @@ proc unzip*[T,U](xs: List[tuple[t: T, u: U]]): (List[T], List[U]) = discard
 
 proc unzip2*[T,U](xs: List[(T,U)]): (List[T], List[U]) = discard
 
+type
+  AtomicType = pointer|ptr|int
+
+  Atomic[T: AtomicType] = distinct T
+
+  Block[T: AtomicType] = object
+
+  AtomicContainer[T: AtomicType] = object
+    b: Atomic[ptr Block[T]]
+
+# bug #8295
+var x = AtomicContainer[int]()
+doAssert (ptr Block[int])(x.b) == nil