add test for nim-lang#12720 anyway

metagn · Aug 29, 2024 · e0975a5 · e0975a5
1 parent 1f69047
commit e0975a5
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/tests/generics/tuninstantiatedgenericcalls.nim b/tests/generics/tuninstantiatedgenericcalls.nim
@@ -305,6 +305,18 @@ block: # issue #1969
   type TripleLike[Generator] = tuple
     a, b, c: typeof(new(Generator)[].next)
 
+import std/atomics
+
+block: # issue #12720
+  const CacheLineSize = 128
+  type
+    Enqueueable = concept x, type T
+      x is ptr
+      x.next is Atomic[pointer]
+    MyChannel[T: Enqueueable] = object
+      pad: array[CacheLineSize - sizeof(default(T)[]), byte]
+      dummy: typeof(default(T)[])
+
 when false: # issue #22342, type section version of #22607
   type GenAlias[isInt: static bool] = (
     when isInt: