Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 51 insertions, 0 deletions

diff --git a/tests/ui/wf/wf-convert-unsafe-trait-obj-box.stderr b/tests/ui/wf/wf-convert-unsafe-trait-obj-box.stderr
new file mode 100644
index 000000000..6cf4f33f9
--- /dev/null
+++ b/tests/ui/wf/wf-convert-unsafe-trait-obj-box.stderr
@@ -0,0 +1,51 @@
+error[E0038]: the trait `Trait` cannot be made into an object
+  --> $DIR/wf-convert-unsafe-trait-obj-box.rs:16:33
+   |
+LL |     let t_box: Box<dyn Trait> = Box::new(S);
+   |                                 ^^^^^^^^^^^ `Trait` 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/wf-convert-unsafe-trait-obj-box.rs:6:14
+   |
+LL | trait Trait: Sized {}
+   |       -----  ^^^^^ ...because it requires `Self: Sized`
+   |       |
+   |       this trait cannot be made into an object...
+   = note: required for `Box<S>` to implement `CoerceUnsized<Box<dyn Trait>>`
+   = note: required by cast to type `Box<dyn Trait>`
+
+error[E0038]: the trait `Trait` cannot be made into an object
+  --> $DIR/wf-convert-unsafe-trait-obj-box.rs:17:15
+   |
+LL |     takes_box(Box::new(S));
+   |               ^^^^^^^^^^^ `Trait` 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/wf-convert-unsafe-trait-obj-box.rs:6:14
+   |
+LL | trait Trait: Sized {}
+   |       -----  ^^^^^ ...because it requires `Self: Sized`
+   |       |
+   |       this trait cannot be made into an object...
+   = note: required for `Box<S>` to implement `CoerceUnsized<Box<dyn Trait>>`
+   = note: required by cast to type `Box<(dyn Trait + 'static)>`
+
+error[E0038]: the trait `Trait` cannot be made into an object
+  --> $DIR/wf-convert-unsafe-trait-obj-box.rs:15:5
+   |
+LL |     Box::new(S) as Box<dyn Trait>;
+   |     ^^^^^^^^^^^ `Trait` 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/wf-convert-unsafe-trait-obj-box.rs:6:14
+   |
+LL | trait Trait: Sized {}
+   |       -----  ^^^^^ ...because it requires `Self: Sized`
+   |       |
+   |       this trait cannot be made into an object...
+   = note: required for `Box<S>` to implement `CoerceUnsized<Box<dyn Trait>>`
+   = note: required by cast to type `Box<dyn Trait>`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0038`.