address review comments
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Matthias Krüger
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@ -3,18 +3,11 @@
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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pub fn String<V>(elem)
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//~^ ERROR expected one of `:`, `@`, or `|`, found `)`
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pub fn foo()
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where
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V: 'a,
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//~^ ERROR use of undeclared lifetime name `'a`
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for<const N: usize = { || {}}> V: 'a,
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//~^ ERROR use of undeclared lifetime name `'a`
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//~^^ ERROR only lifetime parameters can be used in this context
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//~^^^ ERROR defaults for generic parameters are not allowed in `for<...>` binders
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for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
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//~^ ERROR `&` without an explicit lifetime name cannot be used here
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//~^^ ERROR only lifetime parameters can be used in this context
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for<const N: usize = { || {}; 1 }> ():,
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//~^ ERROR only lifetime parameters can be used in this context
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//~^^ ERROR defaults for generic parameters are not allowed in `for<...>` binders
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{}
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pub fn main() {}
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@ -1,92 +1,19 @@
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error: expected one of `:`, `@`, or `|`, found `)`
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:6:22
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LL | pub fn String<V>(elem)
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| ^ expected one of `:`, `@`, or `|`
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= note: anonymous parameters are removed in the 2018 edition (see RFC 1685)
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help: if this is a `self` type, give it a parameter name
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LL | pub fn String<V>(self: elem)
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| +++++
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help: if this is a parameter name, give it a type
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LL | pub fn String<V>(elem: TypeName)
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| ++++++++++
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help: if this is a type, explicitly ignore the parameter name
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LL | pub fn String<V>(_: elem)
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| ++
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error[E0261]: use of undeclared lifetime name `'a`
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:9:8
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LL | V: 'a,
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| ^^ undeclared lifetime
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= note: for more information on higher-ranked polymorphism, visit https://doc.rust-lang.org/nomicon/hrtb.html
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help: consider making the bound lifetime-generic with a new `'a` lifetime
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LL | for<'a> V: 'a,
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| +++++++
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help: consider introducing lifetime `'a` here
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LL | pub fn String<'a, V>(elem)
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| +++
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error[E0261]: use of undeclared lifetime name `'a`
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:39
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LL | for<const N: usize = { || {}}> V: 'a,
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| ^^ undeclared lifetime
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help: consider making the bound lifetime-generic with a new `'a` lifetime
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LL | for<'a, const N: usize = { || {}}> V: 'a,
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| +++
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help: consider introducing lifetime `'a` here
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LL | pub fn String<'a, V>(elem)
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| +++
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error[E0637]: `&` without an explicit lifetime name cannot be used here
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:15:26
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LL | for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
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| ^ explicit lifetime name needed here
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help: consider introducing a higher-ranked lifetime here
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LL | for<'a> for<C2: , R2, R3: > <&'a str as IntoIterator>::Item: 'static,
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| +++++++ ++
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error[E0658]: only lifetime parameters can be used in this context
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:15
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:8:15
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LL | for<const N: usize = { || {}}> V: 'a,
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LL | for<const N: usize = { || {}; 1 }> ():,
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| ^
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= note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
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= help: add `#![feature(non_lifetime_binders)]` to the crate attributes to enable
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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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error[E0658]: only lifetime parameters can be used in this context
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:15:9
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LL | for<C2: , R2, R3: > <&str as IntoIterator>::Item: 'static,
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| ^^ ^^ ^^
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= note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information
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= help: add `#![feature(non_lifetime_binders)]` to the crate attributes to enable
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= note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date
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error: defaults for generic parameters are not allowed in `for<...>` binders
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:11:9
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--> $DIR/ice-generics_of-no-entry-found-for-key-113017.rs:8:9
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LL | for<const N: usize = { || {}}> V: 'a,
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| ^^^^^^^^^^^^^^^^^^^^^^^^^
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LL | for<const N: usize = { || {}; 1 }> ():,
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: aborting due to 7 previous errors
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0261, E0637, E0658.
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For more information about an error, try `rustc --explain E0261`.
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For more information about this error, try `rustc --explain E0658`.
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@ -40,7 +40,7 @@ impl<T> MyFrom<Phantom2<T>> for Phantom1<T> {
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}
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impl<T: MyFrom<Phantom2<DummyT<U>>>, U> MyIndex<DummyT<T>> for Scope<U> {
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//~^ ERROR the type parameter `T` is not constrained by the impl trait, self type, or predicates
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//~^ ERROR the type parameter `T` is not constrained by the impl
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type O = T;
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fn my_index(self) -> Self::O {
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MyFrom::my_from(self.0).ok().unwrap()
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