close #9440 add testcase (#17316)

tests/destructor/t9440.nim

@@ -0,0 +1,52 @@
+discard """
+  matrix: "--gc:refc; --gc:orc; --gc:arc"
+  output: '''
+()
+Destroyed
+()
+Destroyed
+()
+Destroyed
+end
+-------------------------
+()
+Destroyed
+end
+'''
+
+"""
+
+# bug #9440
+block:
+  type
+    X = object
+
+  proc `=destroy`(x: var X) =
+    echo "Destroyed"
+
+  proc main() =
+    for x in 0 .. 2:
+      var obj = X()
+      echo obj
+    # The destructor call is invoked after "end" is printed
+    echo "end"
+
+  main()
+
+echo "-------------------------"
+
+block:
+  type
+    X = object
+
+  proc `=destroy`(x: var X) =
+    echo "Destroyed"
+
+  proc main() =
+    block:
+      var obj = X()
+      echo obj
+      # The destructor is not called when obj goes out of scope
+    echo "end"
+
+  main()