Fix set-contains-or-insert FP when set is mutated before insert
#16009
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Nov 8, 2025
| if let ExprKind::MethodCall(_, receiver, ..) = expr.kind | ||
| && let receiver = receiver.peel_borrows() | ||
| && let receiver_ty = cx.typeck_results().expr_ty(receiver).peel_refs() | ||
| && (receiver_ty.is_diag_item(cx, sym::HashSet) || receiver_ty.is_diag_item(cx, sym::BTreeSet)) |
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| && (receiver_ty.is_diag_item(cx, sym::HashSet) || receiver_ty.is_diag_item(cx, sym::BTreeSet)) | |
| && matches!(receiver_ty.opt_diag_name(cx), Some(sym::HashSet | sym::BTreeSet)) |
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| let child = expr.peel_borrows(); | ||
| let child_ty = cx.typeck_results().expr_ty(child).peel_refs(); | ||
| if (child_ty.is_diag_item(cx, sym::HashSet) || child_ty.is_diag_item(cx, sym::BTreeSet)) |
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| if (child_ty.is_diag_item(cx, sym::HashSet) || child_ty.is_diag_item(cx, sym::BTreeSet)) | |
| if matches!(child_ty.opt_diag_name(cx), Some(sym::HashSet | sym::BTreeSet)) |
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Closes #15990
changelog: [
set-contains-or-insert] fix FP when set is mutated beforeinsert