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Add wasm_c_abi future-incompat lint

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daxpedda 2023-11-14 23:04:22 +01:00
parent c5b571310d
commit 873a0f264e
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3 changed files with 82 additions and 1 deletions
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39
compiler/rustc_lint_defs/src/builtin.rs
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@ -130,6 +130,7 @@ declare_lint_pass! {
UNUSED_VARIABLES,
USELESS_DEPRECATED,
WARNINGS,
WASM_C_ABI,
WHERE_CLAUSES_OBJECT_SAFETY,
WRITES_THROUGH_IMMUTABLE_POINTER,
// tidy-alphabetical-end
@ -4564,3 +4565,41 @@ declare_lint! {
reference: "issue #120192 <https://github.com/rust-lang/rust/issues/120192>",
};
}
declare_lint! {
/// The `wasm_c_abi` lint detects crate dependencies that are incompatible
/// with future versions of Rust that will emit spec-compliant C ABI.
///
/// ### Example
///
/// ```rust,ignore (needs extern crate)
/// #![deny(wasm_c_abi)]
/// ```
///
/// This will produce:
///
/// ```text
/// error: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.87
/// |
/// note: the lint level is defined here
/// --> src/lib.rs:1:9
/// |
/// 1 | #![deny(wasm_c_abi)]
/// | ^^^^^^^^^^
/// ```
///
/// ### Explanation
///
/// Rust has historically emitted non-spec-compliant C ABI. This has caused
/// incompatibilities between other compilers and Wasm targets. In a future
/// version of Rust this will be fixed and therefore dependencies relying
/// on the non-spec-compliant C ABI will stop functioning.
pub WASM_C_ABI,
Warn,
"detects dependencies that are incompatible with the Wasm C ABI",
@future_incompatible = FutureIncompatibleInfo {
reason: FutureIncompatibilityReason::FutureReleaseErrorReportInDeps,
reference: "issue #71871 <https://github.com/rust-lang/rust/issues/71871>",
};
crate_level_only
}