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diff --git a/tests/specialops/tnewseq.nim b/tests/specialops/tnewseq.nim
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+# issue #6981
+
+import std/assertions
+
+{.experimental: "callOperator".}
+
+block: # issue #6981
+  proc `()`(a:string, b:string):string = a & b
+
+  var s = newSeq[int](3)
+
+  doAssert s == @[0, 0, 0]
+
+block: # generalized example from #6981
+  proc mewSeq[T](a: int)=discard
+  proc mewSeq[T]()= discard
+  mewSeq[int]()
+
+block: # issue #9831
+  type Foo = object
+  proc `()`(foo: Foo) = discard
+  let x = newSeq[int]()