2 files changed, 16 insertions, 0 deletions
diff --git a/tests/destructor/tinvalid_rebind.nim b/tests/destructor/tinvalid_rebind.nim
new file mode 100644
index 000000000..0f15c8f9e
--- /dev/null
+++ b/tests/destructor/tinvalid_rebind.nim
@@ -0,0 +1,15 @@
+discard """
+joinable: false
+cmd: "nim check $file"
+errormsg: "cannot bind another '=destroy' to: Foo; previous declaration was constructed here implicitly: tinvalid_rebind.nim(12, 7)"
+line: 14
+"""
+
+type
+  Foo[T] = object
+
+proc main =
+  var f: Foo[int]
+
+proc `=destroy`[T](f: var Foo[T]) =
+  discard
diff --git a/tests/destructor/topttree.nim b/tests/destructor/topttree.nim
index 90ac6fa27..fa5495689 100644
--- a/tests/destructor/topttree.nim
+++ b/tests/destructor/topttree.nim
@@ -22,6 +22,7 @@ var
 
 proc `=destroy`*[T](x: var opt[T]) =
   if x.data != nil:
+    mixin `=destroy`
     when not supportsCopyMem(T):
       `=destroy`(x.data[])
     dealloc(x.data)