Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 52 insertions, 0 deletions

diff --git a/tests/ui/generic-associated-types/issue-79422.base.stderr b/tests/ui/generic-associated-types/issue-79422.base.stderr
new file mode 100644
index 000000000..f1de77bc3
--- /dev/null
+++ b/tests/ui/generic-associated-types/issue-79422.base.stderr
@@ -0,0 +1,52 @@
+error[E0107]: missing generics for associated type `MapLike::VRefCont`
+  --> $DIR/issue-79422.rs:47:36
+   |
+LL |         as Box<dyn MapLike<u8, u8, VRefCont = dyn RefCont<'_, u8>>>;
+   |                                    ^^^^^^^^ expected 1 lifetime argument
+   |
+note: associated type defined here, with 1 lifetime parameter: `'a`
+  --> $DIR/issue-79422.rs:23:10
+   |
+LL |     type VRefCont<'a>: RefCont<'a, V> where Self: 'a;
+   |          ^^^^^^^^ --
+help: add missing lifetime argument
+   |
+LL |         as Box<dyn MapLike<u8, u8, VRefCont<'a> = dyn RefCont<'_, u8>>>;
+   |                                            ++++
+
+error[E0038]: the trait `MapLike` cannot be made into an object
+  --> $DIR/issue-79422.rs:47:12
+   |
+LL |         as Box<dyn MapLike<u8, u8, VRefCont = dyn RefCont<'_, u8>>>;
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `MapLike` 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/issue-79422.rs:23:10
+   |
+LL | trait MapLike<K, V> {
+   |       ------- this trait cannot be made into an object...
+LL |     type VRefCont<'a>: RefCont<'a, V> where Self: 'a;
+   |          ^^^^^^^^ ...because it contains the generic associated type `VRefCont`
+   = help: consider moving `VRefCont` to another trait
+
+error[E0038]: the trait `MapLike` cannot be made into an object
+  --> $DIR/issue-79422.rs:44:13
+   |
+LL |     let m = Box::new(std::collections::BTreeMap::<u8, u8>::new())
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `MapLike` 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/issue-79422.rs:23:10
+   |
+LL | trait MapLike<K, V> {
+   |       ------- this trait cannot be made into an object...
+LL |     type VRefCont<'a>: RefCont<'a, V> where Self: 'a;
+   |          ^^^^^^^^ ...because it contains the generic associated type `VRefCont`
+   = help: consider moving `VRefCont` to another trait
+   = note: required for `Box<BTreeMap<u8, u8>>` to implement `CoerceUnsized<Box<dyn MapLike<u8, u8, VRefCont = (dyn RefCont<'_, u8> + 'static)>>>`
+   = note: required by cast to type `Box<dyn MapLike<u8, u8, VRefCont = (dyn RefCont<'_, u8> + 'static)>>`
+
+error: aborting due to 3 previous errors
+
+Some errors have detailed explanations: E0038, E0107.
+For more information about an error, try `rustc --explain E0038`.