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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/object-safety/object-safety-no-static.curr.stderr
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
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-no-static.rs:12:18
+ |
+LL | fn diverges() -> 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-no-static.rs:9:8
+ |
+LL | trait Foo {
+ | --- this trait cannot be made into an object...
+LL | fn foo() {}
+ | ^^^ ...because associated function `foo` has no `self` parameter
+help: consider turning `foo` into a method by giving it a `&self` argument
+ |
+LL | fn foo(&self) {}
+ | +++++
+help: alternatively, consider constraining `foo` so it does not apply to trait objects
+ |
+LL | fn foo() where Self: Sized {}
+ | +++++++++++++++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0038`.