1 files changed, 39 insertions, 0 deletions
diff --git a/src/test/ui/self/arbitrary-self-types-not-object-safe.curr.stderr b/src/test/ui/self/arbitrary-self-types-not-object-safe.curr.stderr
new file mode 100644
index 000000000..35a65facb
--- /dev/null
+++ b/src/test/ui/self/arbitrary-self-types-not-object-safe.curr.stderr
@@ -0,0 +1,39 @@
+error[E0038]: the trait `Foo` cannot be made into an object
+  --> $DIR/arbitrary-self-types-not-object-safe.rs:33:32
+   |
+LL |     fn foo(self: &Rc<Self>) -> usize;
+   |                  --------- help: consider changing method `foo`'s `self` parameter to be `&self`: `&Self`
+...
+LL |     let x = Rc::new(5usize) as Rc<dyn Foo>;
+   |                                ^^^^^^^^^^^ `Foo` cannot be made into an object
+   |
+note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
+  --> $DIR/arbitrary-self-types-not-object-safe.rs:8:18
+   |
+LL | trait Foo {
+   |       --- this trait cannot be made into an object...
+LL |     fn foo(self: &Rc<Self>) -> usize;
+   |                  ^^^^^^^^^ ...because method `foo`'s `self` parameter cannot be dispatched on
+
+error[E0038]: the trait `Foo` cannot be made into an object
+  --> $DIR/arbitrary-self-types-not-object-safe.rs:33:13
+   |
+LL |     fn foo(self: &Rc<Self>) -> usize;
+   |                  --------- help: consider changing method `foo`'s `self` parameter to be `&self`: `&Self`
+...
+LL |     let x = Rc::new(5usize) as Rc<dyn Foo>;
+   |             ^^^^^^^^^^^^^^^ `Foo` cannot be made into an object
+   |
+note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
+  --> $DIR/arbitrary-self-types-not-object-safe.rs:8:18
+   |
+LL | trait Foo {
+   |       --- this trait cannot be made into an object...
+LL |     fn foo(self: &Rc<Self>) -> usize;
+   |                  ^^^^^^^^^ ...because method `foo`'s `self` parameter cannot be dispatched on
+   = note: required because of the requirements on the impl of `CoerceUnsized<Rc<dyn Foo>>` for `Rc<usize>`
+   = note: required by cast to type `Rc<dyn Foo>`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0038`.