first commit

examples/private_field_deref.rs

@@ -0,0 +1,26 @@
+mod private {
+    pub struct Foo {
+        field: i32,
+        bar: Bar,
+    }
+
+    pub struct Bar {
+        pub field: u32,
+    }
+
+    impl std::ops::Deref for Foo {
+        type Target = Bar;
+
+        fn deref(&self) -> &Self::Target {
+            &self.bar
+        }
+    }
+}
+
+use private::Foo;
+
+fn example(f: Foo) {
+    let a: i32 = f.field;
+}
+
+fn main() {}