diff options
6 files changed, 110 insertions, 3 deletions
diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index c4aeaf478bd..1a0292ebbde 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -3960,7 +3960,7 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { match res { Res::SelfCtor(_) // See #70549. | Res::Def( - DefKind::Ctor(_, CtorKind::Const) | DefKind::Const | DefKind::ConstParam, + DefKind::Ctor(_, CtorKind::Const) | DefKind::Const | DefKind::AssocConst | DefKind::ConstParam, _, ) if is_syntactic_ambiguity => { // Disambiguate in favor of a unit struct/variant or constant pattern. @@ -3969,7 +3969,7 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { } Some(res) } - Res::Def(DefKind::Ctor(..) | DefKind::Const | DefKind::Static { .. }, _) => { + Res::Def(DefKind::Ctor(..) | DefKind::Const | DefKind::AssocConst | DefKind::Static { .. }, _) => { // This is unambiguously a fresh binding, either syntactically // (e.g., `IDENT @ PAT` or `ref IDENT`) or because `IDENT` resolves // to something unusable as a pattern (e.g., constructor function), @@ -4005,7 +4005,7 @@ impl<'a, 'ast, 'ra: 'ast, 'tcx> LateResolutionVisitor<'a, 'ast, 'ra, 'tcx> { ); None } - Res::Def(DefKind::Fn, _) | Res::Local(..) | Res::Err => { + Res::Def(DefKind::Fn | DefKind::AssocFn, _) | Res::Local(..) | Res::Err => { // These entities are explicitly allowed to be shadowed by fresh bindings. None } diff --git a/tests/ui/resolve/resolve-issue-135614-assoc-const.import_trait_associated_functions.stderr b/tests/ui/resolve/resolve-issue-135614-assoc-const.import_trait_associated_functions.stderr new file mode 100644 index 00000000000..b41fa1818e2 --- /dev/null +++ b/tests/ui/resolve/resolve-issue-135614-assoc-const.import_trait_associated_functions.stderr @@ -0,0 +1,19 @@ +error[E0005]: refutable pattern in local binding + --> $DIR/resolve-issue-135614-assoc-const.rs:21:9 + | +LL | let DEFAULT: u32 = 0; + | ^^^^^^^ pattern `1_u32..=u32::MAX` not covered +LL | const DEFAULT: u32 = 0; + | ------------------ missing patterns are not covered because `DEFAULT` is interpreted as a constant pattern, not a new variable + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch19-02-refutability.html + = note: the matched value is of type `u32` +help: introduce a variable instead + | +LL | let DEFAULT_var: u32 = 0; + | ~~~~~~~~~~~ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0005`. diff --git a/tests/ui/resolve/resolve-issue-135614-assoc-const.normal.stderr b/tests/ui/resolve/resolve-issue-135614-assoc-const.normal.stderr new file mode 100644 index 00000000000..908f5bdd897 --- /dev/null +++ b/tests/ui/resolve/resolve-issue-135614-assoc-const.normal.stderr @@ -0,0 +1,30 @@ +error[E0658]: `use` associated items of traits is unstable + --> $DIR/resolve-issue-135614-assoc-const.rs:6:5 + | +LL | use MyDefault::DEFAULT; + | ^^^^^^^^^^^^^^^^^^ + | + = note: see issue #134691 <https://github.com/rust-lang/rust/issues/134691> for more information + = help: add `#![feature(import_trait_associated_functions)]` to the crate attributes to enable + = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date + +error[E0005]: refutable pattern in local binding + --> $DIR/resolve-issue-135614-assoc-const.rs:21:9 + | +LL | let DEFAULT: u32 = 0; + | ^^^^^^^ pattern `1_u32..=u32::MAX` not covered +LL | const DEFAULT: u32 = 0; + | ------------------ missing patterns are not covered because `DEFAULT` is interpreted as a constant pattern, not a new variable + | + = note: `let` bindings require an "irrefutable pattern", like a `struct` or an `enum` with only one variant + = note: for more information, visit https://doc.rust-lang.org/book/ch19-02-refutability.html + = note: the matched value is of type `u32` +help: introduce a variable instead + | +LL | let DEFAULT_var: u32 = 0; + | ~~~~~~~~~~~ + +error: aborting due to 2 previous errors + +Some errors have detailed explanations: E0005, E0658. +For more information about an error, try `rustc --explain E0005`. diff --git a/tests/ui/resolve/resolve-issue-135614-assoc-const.rs b/tests/ui/resolve/resolve-issue-135614-assoc-const.rs new file mode 100644 index 00000000000..5a592922cd4 --- /dev/null +++ b/tests/ui/resolve/resolve-issue-135614-assoc-const.rs @@ -0,0 +1,30 @@ +//@ revisions: normal import_trait_associated_functions +#![cfg_attr(import_trait_associated_functions, feature(import_trait_associated_functions))] + +// Makes sure that imported constant can be used in pattern bindings. + +use MyDefault::DEFAULT; //[normal]~ ERROR `use` associated items of traits is unstable + +trait MyDefault { + const DEFAULT: Self; +} + +impl MyDefault for u32 { + const DEFAULT: u32 = 0; +} + +impl MyDefault for () { + const DEFAULT: () = (); +} + +fn foo(x: u32) -> u32 { + let DEFAULT: u32 = 0; //~ ERROR refutable pattern in local binding + const DEFAULT: u32 = 0; + if let DEFAULT = x { DEFAULT } else { 1 } +} + +fn bar() { + let DEFAULT = (); +} + +fn main() {} diff --git a/tests/ui/resolve/resolve-issue-135614.normal.stderr b/tests/ui/resolve/resolve-issue-135614.normal.stderr new file mode 100644 index 00000000000..a9adeb0848e --- /dev/null +++ b/tests/ui/resolve/resolve-issue-135614.normal.stderr @@ -0,0 +1,13 @@ +error[E0658]: `use` associated items of traits is unstable + --> $DIR/resolve-issue-135614.rs:7:5 + | +LL | use A::b; + | ^^^^ + | + = note: see issue #134691 <https://github.com/rust-lang/rust/issues/134691> for more information + = help: add `#![feature(import_trait_associated_functions)]` to the crate attributes to enable + = note: this compiler was built on YYYY-MM-DD; consider upgrading it if it is out of date + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0658`. diff --git a/tests/ui/resolve/resolve-issue-135614.rs b/tests/ui/resolve/resolve-issue-135614.rs new file mode 100644 index 00000000000..fec9499365b --- /dev/null +++ b/tests/ui/resolve/resolve-issue-135614.rs @@ -0,0 +1,15 @@ +//@ revisions: normal import_trait_associated_functions +//@[import_trait_associated_functions] check-pass +#![cfg_attr(import_trait_associated_functions, feature(import_trait_associated_functions))] + +// Makes sure that imported associated functions are shadowed by the local declarations. + +use A::b; //[normal]~ ERROR `use` associated items of traits is unstable + +trait A { + fn b() {} +} + +fn main() { + let b: (); +} |