move_ref_pattern: don't ICE on unreachable 2xby-move conflicts
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@ -648,9 +648,6 @@ fn check_borrow_conflicts_in_at_patterns(cx: &MatchVisitor<'_, '_>, pat: &Pat<'_
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let mut conflicts_ref = Vec::new();
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sub.each_binding(|_, hir_id, span, _| {
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match tables.extract_binding_mode(sess, hir_id, span) {
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Some(ty::BindByValue(_)) if is_binding_by_move(cx, hir_id, span) => {
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sess.delay_span_bug(span, "by-move in subpat unchecked by borrowck");
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}
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Some(ty::BindByValue(_)) | None => {}
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Some(ty::BindByReference(_)) => conflicts_ref.push(span),
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}
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@ -0,0 +1,15 @@
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// When conflicts between by-move bindings in `by_move_1 @ has_by_move` patterns
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// happen and that code is unreachable according to borrowck, we accept this code.
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// In particular, we want to ensure here that an ICE does not happen, which it did originally.
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// check-pass
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#![feature(move_ref_pattern)]
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#![feature(bindings_after_at)]
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fn main() {
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return;
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struct S;
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let a @ (b, c) = (S, S);
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}
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