diff options
Diffstat (limited to 'src/test/ui/associated-types/defaults-specialization.stderr')
| -rw-r--r-- | src/test/ui/associated-types/defaults-specialization.stderr | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/defaults-specialization.stderr b/src/test/ui/associated-types/defaults-specialization.stderr new file mode 100644 index 000000000..2d61b2a64 --- /dev/null +++ b/src/test/ui/associated-types/defaults-specialization.stderr @@ -0,0 +1,156 @@ +warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/defaults-specialization.rs:3:38 + | +LL | #![feature(associated_type_defaults, specialization)] + | ^^^^^^^^^^^^^^ + | + = note: `#[warn(incomplete_features)]` on by default + = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information + = help: consider using `min_specialization` instead, which is more stable and complete + +error[E0053]: method `make` has an incompatible type for trait + --> $DIR/defaults-specialization.rs:19:18 + | +LL | fn make() -> u8 { 0 } + | ^^ + | | + | expected associated type, found `u8` + | help: change the output type to match the trait: `<A<T> as Tr>::Ty` + | +note: type in trait + --> $DIR/defaults-specialization.rs:9:18 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^ + = note: expected fn pointer `fn() -> <A<T> as Tr>::Ty` + found fn pointer `fn() -> u8` + +error[E0053]: method `make` has an incompatible type for trait + --> $DIR/defaults-specialization.rs:35:18 + | +LL | default type Ty = bool; + | ----------------------- expected this associated type +LL | +LL | fn make() -> bool { true } + | ^^^^ + | | + | expected associated type, found `bool` + | help: change the output type to match the trait: `<B<T> as Tr>::Ty` + | +note: type in trait + --> $DIR/defaults-specialization.rs:9:18 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^ + = note: expected fn pointer `fn() -> <B<T> as Tr>::Ty` + found fn pointer `fn() -> bool` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:10:9 + | +LL | type Ty = u8; + | ------------- associated type defaults can't be assumed inside the trait defining them +LL | +LL | fn make() -> Self::Ty { + | -------- expected `<Self as Tr>::Ty` because of return type +LL | 0u8 + | ^^^ expected associated type, found `u8` + | + = note: expected associated type `<Self as Tr>::Ty` + found type `u8` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:26:29 + | +LL | fn make() -> Self::Ty { 0u8 } + | -------- ^^^ expected associated type, found `u8` + | | + | expected `<A2<T> as Tr>::Ty` because of return type + | + = note: expected associated type `<A2<T> as Tr>::Ty` + found type `u8` + = help: consider constraining the associated type `<A2<T> as Tr>::Ty` to `u8` or calling a method that returns `<A2<T> as Tr>::Ty` + = note: for more information, visit https://doc.rust-lang.org/book/ch19-03-advanced-traits.html + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:44:29 + | +LL | default type Ty = bool; + | ----------------------- expected this associated type +LL | +LL | fn make() -> Self::Ty { true } + | -------- ^^^^ expected associated type, found `bool` + | | + | expected `<B2<T> as Tr>::Ty` because of return type + | + = note: expected associated type `<B2<T> as Tr>::Ty` + found type `bool` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:87:32 + | +LL | let _: <B<()> as Tr>::Ty = 0u8; + | ----------------- ^^^ expected associated type, found `u8` + | | + | expected due to this + | + = note: expected associated type `<B<()> as Tr>::Ty` + found type `u8` +help: a method is available that returns `<B<()> as Tr>::Ty` + --> $DIR/defaults-specialization.rs:9:5 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^^^^^^^^^^^^^^ consider calling `Tr::make` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:88:32 + | +LL | let _: <B<()> as Tr>::Ty = true; + | ----------------- ^^^^ expected associated type, found `bool` + | | + | expected due to this + | + = note: expected associated type `<B<()> as Tr>::Ty` + found type `bool` +help: a method is available that returns `<B<()> as Tr>::Ty` + --> $DIR/defaults-specialization.rs:9:5 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^^^^^^^^^^^^^^ consider calling `Tr::make` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:89:33 + | +LL | let _: <B2<()> as Tr>::Ty = 0u8; + | ------------------ ^^^ expected associated type, found `u8` + | | + | expected due to this + | + = note: expected associated type `<B2<()> as Tr>::Ty` + found type `u8` +help: a method is available that returns `<B2<()> as Tr>::Ty` + --> $DIR/defaults-specialization.rs:9:5 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^^^^^^^^^^^^^^ consider calling `Tr::make` + +error[E0308]: mismatched types + --> $DIR/defaults-specialization.rs:90:33 + | +LL | let _: <B2<()> as Tr>::Ty = true; + | ------------------ ^^^^ expected associated type, found `bool` + | | + | expected due to this + | + = note: expected associated type `<B2<()> as Tr>::Ty` + found type `bool` +help: a method is available that returns `<B2<()> as Tr>::Ty` + --> $DIR/defaults-specialization.rs:9:5 + | +LL | fn make() -> Self::Ty { + | ^^^^^^^^^^^^^^^^^^^^^ consider calling `Tr::make` + +error: aborting due to 9 previous errors; 1 warning emitted + +Some errors have detailed explanations: E0053, E0308. +For more information about an error, try `rustc --explain E0053`. |