diff options
Diffstat (limited to 'compiler/rustc_lint_defs/src/builtin.rs')
| -rw-r--r-- | compiler/rustc_lint_defs/src/builtin.rs | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 82f16b31a66..617fe99ef6a 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -90,6 +90,7 @@ declare_lint_pass! { RUST_2021_PREFIXES_INCOMPATIBLE_SYNTAX, RUST_2021_PRELUDE_COLLISIONS, RUST_2024_INCOMPATIBLE_PAT, + SELF_CONSTRUCTOR_FROM_OUTER_ITEM, SEMICOLON_IN_EXPRESSIONS_FROM_MACROS, SINGLE_USE_LIFETIMES, SOFT_UNSTABLE, @@ -3150,6 +3151,47 @@ declare_lint! { } declare_lint! { + /// The `self_constructor_from_outer_item` lint detects cases where the `Self` constructor + /// was silently allowed due to a bug in the resolver, and which may produce surprising + /// and unintended behavior. + /// + /// Using a `Self` type alias from an outer item was never intended, but was silently allowed. + /// This is deprecated -- and is a hard error when the `Self` type alias references generics + /// that are not in scope. + /// + /// ### Example + /// + /// ```rust,compile_fail + /// #![deny(self_constructor_from_outer_item)] + /// + /// struct S0(usize); + /// + /// impl S0 { + /// fn foo() { + /// const C: S0 = Self(0); + /// fn bar() -> S0 { + /// Self(0) + /// } + /// } + /// } + /// ``` + /// + /// {{produces}} + /// + /// ### Explanation + /// + /// The `Self` type alias should not be reachable because nested items are not associated with + /// the scope of the parameters from the parent item. + pub SELF_CONSTRUCTOR_FROM_OUTER_ITEM, + Warn, + "detect unsupported use of `Self` from outer item", + @future_incompatible = FutureIncompatibleInfo { + reason: FutureIncompatibilityReason::FutureReleaseErrorDontReportInDeps, + reference: "issue #124186 <https://github.com/rust-lang/rust/issues/124186>", + }; +} + +declare_lint! { /// The `semicolon_in_expressions_from_macros` lint detects trailing semicolons /// in macro bodies when the macro is invoked in expression position. /// This was previous accepted, but is being phased out. |