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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:06:37 +0000
commit246f239d9f40f633160f0c18f87a20922d4e77bb (patch)
tree5a88572663584b3d4d28e5a20e10abab1be40884 /src/test/ui/impl-trait/in-trait/object-safety.stderr
parentReleasing progress-linux version 1.64.0+dfsg1-1~progress7.99u1. (diff)
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Merging debian version 1.65.0+dfsg1-2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+error[E0038]: the trait `Foo` cannot be made into an object
+ --> $DIR/object-safety.rs:17:33
+ |
+LL | let i = Box::new(42_u32) as Box<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/object-safety.rs:7:8
+ |
+LL | trait Foo {
+ | --- this trait cannot be made into an object...
+LL | fn baz(&self) -> impl Debug;
+ | ^^^ ...because method `baz` references an `impl Trait` type in its return type
+ = help: consider moving `baz` to another trait
+
+error[E0038]: the trait `Foo` cannot be made into an object
+ --> $DIR/object-safety.rs:20:13
+ |
+LL | let s = i.baz();
+ | ^^^^^^^ `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/object-safety.rs:7:8
+ |
+LL | trait Foo {
+ | --- this trait cannot be made into an object...
+LL | fn baz(&self) -> impl Debug;
+ | ^^^ ...because method `baz` references an `impl Trait` type in its return type
+ = help: consider moving `baz` to another trait
+
+error[E0038]: the trait `Foo` cannot be made into an object
+ --> $DIR/object-safety.rs:17:13
+ |
+LL | let i = Box::new(42_u32) as Box<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/object-safety.rs:7:8
+ |
+LL | trait Foo {
+ | --- this trait cannot be made into an object...
+LL | fn baz(&self) -> impl Debug;
+ | ^^^ ...because method `baz` references an `impl Trait` type in its return type
+ = help: consider moving `baz` to another trait
+ = note: required for `Box<u32>` to implement `CoerceUnsized<Box<dyn Foo>>`
+ = note: required by cast to type `Box<dyn Foo>`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0038`.