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Disallow reference to static mut for statements

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This commit is contained in:
Obei Sideg 2023-12-22 15:00:25 +03:00
parent 2c088f9520
commit 70ba4d14b3
1 changed files with 19 additions and 0 deletions
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19
compiler/rustc_hir_analysis/src/check/errs.rs
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@ -26,6 +26,25 @@ pub fn maybe_expr_static_mut(tcx: TyCtxt<'_>, expr: hir::Expr<'_>) {
}
}
/// Check for shared or mutable references of `static mut` inside statement
pub fn maybe_stmt_static_mut(tcx: TyCtxt<'_>, stmt: hir::Stmt<'_>) {
if let hir::StmtKind::Local(loc) = stmt.kind
&& let hir::PatKind::Binding(ba, _, _, _) = loc.pat.kind
&& matches!(ba.0, rustc_ast::ByRef::Yes)
&& let Some(init) = loc.init
&& let Some(var) = is_path_static_mut(*init)
{
handle_static_mut_ref(
tcx,
init.span,
var,
loc.span.edition().at_least_rust_2024(),
matches!(ba.1, Mutability::Mut),
stmt.hir_id,
);
}
}
fn is_path_static_mut(expr: hir::Expr<'_>) -> Option<String> {
if let hir::ExprKind::Path(qpath) = expr.kind
&& let hir::QPath::Resolved(_, path) = qpath