fixes #6682

tests/notnil/tmust_compile.nim

@@ -0,0 +1,26 @@
+discard """
+  output: '''success'''
+"""
+
+# bug #6682
+
+type
+    Fields = enum
+        A=1, B, C
+
+    Obj = object
+        fld: array[Fields, int]
+
+    AsGeneric[T] = array[Fields, T]
+    Obj2[T] = object
+      fld: AsGeneric[T]
+
+var a: Obj # this works
+
+var arr: array[Fields, int]
+
+var b = Obj() # this doesn't (also doesn't works with additional fields)
+
+var z = Obj2[int]()
+
+echo "success"