fixes #4671

tests/overload/tselfderef.nim

@@ -0,0 +1,17 @@
+# bug #4671
+{.experimental.}
+{.this: self.}
+
+type
+  SomeObj = object
+    f: int
+
+proc f(num: int) =
+  discard
+
+var intptr: ptr int
+intptr.f() # compiles fine
+
+proc doSomething(self: var SomeObj) =
+  var pint: ptr int
+  pint.f() # Error: expression '.(pint, "f")' cannot be called