Add an opt-out in pretty printing for RTN rendering

5 files changed, 53 insertions, 0 deletions

diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
index 0a31cc67533..459f3ea1642 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
@@ -15,6 +15,10 @@ note: required by a bound in `is_send`
    |
 LL | fn is_send(_: impl Send) {}
    |                    ^^^^ required by this bound in `is_send`
+help: consider further restricting the associated type
+   |
+LL | >() where <T as Foo>::method(..): Send {
+   |     ++++++++++++++++++++++++++++++++++
 
 error: aborting due to 1 previous error
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/display.stderr b/tests/ui/associated-type-bounds/return-type-notation/display.stderr
index b895d796952..a614089ce40 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/display.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/display.stderr
@@ -11,6 +11,10 @@ note: required by a bound in `needs_trait`
    |
 LL | fn needs_trait(_: impl Trait) {}
    |                        ^^^^^ required by this bound in `needs_trait`
+help: consider further restricting the associated type
+   |
+LL | fn foo<T: Assoc>(t: T) where <T as Assoc>::method(..): Trait {
+   |                        +++++++++++++++++++++++++++++++++++++
 
 error[E0277]: the trait bound `impl Sized { <T as Assoc>::method_with_lt(..) }: Trait` is not satisfied
   --> $DIR/display.rs:16:17
@@ -25,6 +29,10 @@ note: required by a bound in `needs_trait`
    |
 LL | fn needs_trait(_: impl Trait) {}
    |                        ^^^^^ required by this bound in `needs_trait`
+help: consider further restricting the associated type
+   |
+LL | fn foo<T: Assoc>(t: T) where <T as Assoc>::method_with_lt(..): Trait {
+   |                        +++++++++++++++++++++++++++++++++++++++++++++
 
 error[E0277]: the trait bound `impl Sized: Trait` is not satisfied
   --> $DIR/display.rs:18:17
diff --git a/tests/ui/associated-type-bounds/return-type-notation/rendering.fixed b/tests/ui/associated-type-bounds/return-type-notation/rendering.fixed
new file mode 100644
index 00000000000..72c174a0ca0
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/rendering.fixed
@@ -0,0 +1,15 @@
+//@ run-rustfix
+
+#![allow(unused)]
+#![feature(return_type_notation)]
+
+trait Foo {
+    fn missing() -> impl Sized;
+}
+
+impl Foo for () {
+    //~^ ERROR not all trait items implemented, missing: `missing`
+fn missing() -> impl Sized { todo!() }
+}
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/rendering.rs b/tests/ui/associated-type-bounds/return-type-notation/rendering.rs
new file mode 100644
index 00000000000..4c9948d4c06
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/rendering.rs
@@ -0,0 +1,14 @@
+//@ run-rustfix
+
+#![allow(unused)]
+#![feature(return_type_notation)]
+
+trait Foo {
+    fn missing() -> impl Sized;
+}
+
+impl Foo for () {
+    //~^ ERROR not all trait items implemented, missing: `missing`
+}
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/return-type-notation/rendering.stderr b/tests/ui/associated-type-bounds/return-type-notation/rendering.stderr
new file mode 100644
index 00000000000..62fdeb059dd
--- /dev/null
+++ b/tests/ui/associated-type-bounds/return-type-notation/rendering.stderr
@@ -0,0 +1,12 @@
+error[E0046]: not all trait items implemented, missing: `missing`
+  --> $DIR/rendering.rs:10:1
+   |
+LL |     fn missing() -> impl Sized;
+   |     --------------------------- `missing` from trait
+...
+LL | impl Foo for () {
+   | ^^^^^^^^^^^^^^^ missing `missing` in implementation
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0046`.