37ed7a4438
This is a very large commit since a lot needs to be changed in order to make the tests pass. The salient changes are: - `ConstArgKind` gets a new `Path` variant, and all const params are now represented using it. Non-param paths still use `ConstArgKind::Anon` to prevent this change from getting too large, but they will soon use the `Path` variant too. - `ConstArg` gets a distinct `hir_id` field and its own variant in `hir::Node`. This affected many parts of the compiler that expected the parent of an `AnonConst` to be the containing context (e.g., an array repeat expression). They have been changed to check the "grandparent" where necessary. - Some `ast::AnonConst`s now have their `DefId`s created in rustc_ast_lowering rather than `DefCollector`. This is because in some cases they will end up becoming a `ConstArgKind::Path` instead, which has no `DefId`. We have to solve this in a hacky way where we guess whether the `AnonConst` could end up as a path const since we can't know for sure until after name resolution (`N` could refer to a free const or a nullary struct). If it has no chance as being a const param, then we create a `DefId` in `DefCollector` -- otherwise we decide during ast_lowering. This will have to be updated once all path consts use `ConstArgKind::Path`. - We explicitly use `ConstArgHasType` for array lengths, rather than implicitly relying on anon const type feeding -- this is due to the addition of `ConstArgKind::Path`. - Some tests have their outputs changed, but the changes are for the most part minor (including removing duplicate or almost-duplicate errors). One test now ICEs, but it is for an incomplete, unstable feature and is now tracked at #127009.
63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
error: associated function in `impl` without body
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--> $DIR/issue-95023.rs:8:5
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LL | fn foo<const N: usize>(&self) -> Self::B<{ N }>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-
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| |
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| help: provide a definition for the function: `{ <body> }`
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error[E0407]: method `foo` is not a member of trait `Fn`
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--> $DIR/issue-95023.rs:8:5
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LL | fn foo<const N: usize>(&self) -> Self::B<{ N }>;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not a member of trait `Fn`
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error[E0183]: manual implementations of `Fn` are experimental
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--> $DIR/issue-95023.rs:3:6
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LL | impl Fn(&isize) for Error {
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| ^^^^^^^^^^ manual implementations of `Fn` are experimental
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= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
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error[E0229]: associated item constraints are not allowed here
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--> $DIR/issue-95023.rs:3:6
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LL | impl Fn(&isize) for Error {
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| ^^^^^^^^^^ associated item constraint not allowed here
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help: parenthesized trait syntax expands to `Fn<(&isize,), Output=()>`
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--> $DIR/issue-95023.rs:3:6
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LL | impl Fn(&isize) for Error {
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| ^^^^^^^^^^
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error[E0277]: expected a `FnMut(&isize)` closure, found `Error`
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--> $DIR/issue-95023.rs:3:21
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LL | impl Fn(&isize) for Error {
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| ^^^^^ expected an `FnMut(&isize)` closure, found `Error`
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= help: the trait `FnMut(&isize)` is not implemented for `Error`
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note: required by a bound in `Fn`
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--> $SRC_DIR/core/src/ops/function.rs:LL:COL
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error[E0046]: not all trait items implemented, missing: `call`
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--> $DIR/issue-95023.rs:3:1
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LL | impl Fn(&isize) for Error {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^ missing `call` in implementation
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= help: implement the missing item: `fn call(&self, _: (&isize,)) -> <Self as FnOnce<(&isize,)>>::Output { todo!() }`
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error[E0220]: associated type `B` not found for `Self`
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--> $DIR/issue-95023.rs:8:44
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LL | fn foo<const N: usize>(&self) -> Self::B<{ N }>;
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| ^ help: `Self` has the following associated type: `Output`
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error: aborting due to 7 previous errors
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Some errors have detailed explanations: E0046, E0183, E0220, E0229, E0277, E0407.
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For more information about an error, try `rustc --explain E0046`.
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