diff options
Diffstat (limited to 'src/test/ui/traits/bound/not-on-bare-trait.stderr')
| -rw-r--r-- | src/test/ui/traits/bound/not-on-bare-trait.stderr | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/test/ui/traits/bound/not-on-bare-trait.stderr b/src/test/ui/traits/bound/not-on-bare-trait.stderr new file mode 100644 index 000000000..8a92dd118 --- /dev/null +++ b/src/test/ui/traits/bound/not-on-bare-trait.stderr @@ -0,0 +1,31 @@ +warning: trait objects without an explicit `dyn` are deprecated + --> $DIR/not-on-bare-trait.rs:7:12 + | +LL | fn foo(_x: Foo + Send) { + | ^^^^^^^^^^ + | + = note: `#[warn(bare_trait_objects)]` on by default + = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! + = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html> +help: use `dyn` + | +LL - fn foo(_x: Foo + Send) { +LL + fn foo(_x: dyn Foo + Send) { + | + +error[E0277]: the size for values of type `(dyn Foo + Send + 'static)` cannot be known at compilation time + --> $DIR/not-on-bare-trait.rs:7:8 + | +LL | fn foo(_x: Foo + Send) { + | ^^ doesn't have a size known at compile-time + | + = help: the trait `Sized` is not implemented for `(dyn Foo + Send + 'static)` + = help: unsized fn params are gated as an unstable feature +help: function arguments must have a statically known size, borrowed types always have a known size + | +LL | fn foo(_x: &Foo + Send) { + | + + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. |