mirror of
https://github.com/rust-lang/rust-clippy
synced 2025-01-06 10:18:48 +00:00
23 lines
718 B
Rust
23 lines
718 B
Rust
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use super::WRONG_TRANSMUTE;
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use crate::utils::span_lint;
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use rustc_hir::Expr;
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use rustc_lint::LateContext;
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use rustc_middle::ty::{self, Ty};
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/// Checks for `wrong_transmute` lint.
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/// Returns `true` if it's triggered, otherwise returns `false`.
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pub(super) fn check<'tcx>(cx: &LateContext<'tcx>, e: &'tcx Expr<'_>, from_ty: Ty<'tcx>, to_ty: Ty<'tcx>) -> bool {
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match (&from_ty.kind(), &to_ty.kind()) {
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(ty::Float(_) | ty::Char, ty::Ref(..) | ty::RawPtr(_)) => {
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span_lint(
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cx,
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WRONG_TRANSMUTE,
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e.span,
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&format!("transmute from a `{}` to a pointer", from_ty),
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);
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true
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},
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_ => false,
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}
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}
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