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indexing_slicing: Check HIR tree first.

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This commit is contained in:
Jason Newcomb 2024-06-11 15:11:20 -04:00
parent 06f83b4e26
commit c73aceb043
1 changed files with 2 additions and 6 deletions
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8
clippy_lints/src/indexing_slicing.rs
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@ -102,13 +102,8 @@ pub fn new(suppress_restriction_lint_in_const: bool) -> Self {
impl<'tcx> LateLintPass<'tcx> for IndexingSlicing {
fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
if (self.suppress_restriction_lint_in_const && cx.tcx.hir().is_inside_const_context(expr.hir_id))
|| is_from_proc_macro(cx, expr)
{
return;
}
if let ExprKind::Index(array, index, _) = &expr.kind
&& (!self.suppress_restriction_lint_in_const || !cx.tcx.hir().is_inside_const_context(expr.hir_id))
&& let expr_ty = cx.typeck_results().expr_ty(array)
&& let mut deref = deref_chain(cx, expr_ty)
&& deref.any(|l| {
@ -116,6 +111,7 @@ fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
|| l.peel_refs().is_array()
|| ty_has_applicable_get_function(cx, l.peel_refs(), expr_ty, expr)
})
&& !is_from_proc_macro(cx, expr)
{
let note = "the suggestion might not be applicable in constant blocks";
let ty = cx.typeck_results().expr_ty(array).peel_refs();