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-rw-r--r--crates/ide/src/diagnostics.rs909
1 files changed, 2 insertions, 907 deletions
diff --git a/crates/ide/src/diagnostics.rs b/crates/ide/src/diagnostics.rs
index 7978c1fc2..01b68232e 100644
--- a/crates/ide/src/diagnostics.rs
+++ b/crates/ide/src/diagnostics.rs
@@ -10,6 +10,7 @@ mod incorrect_case;
10mod macro_error; 10mod macro_error;
11mod mismatched_arg_count; 11mod mismatched_arg_count;
12mod missing_fields; 12mod missing_fields;
13mod missing_match_arms;
13mod missing_ok_or_some_in_tail_expr; 14mod missing_ok_or_some_in_tail_expr;
14mod missing_unsafe; 15mod missing_unsafe;
15mod no_such_field; 16mod no_such_field;
@@ -205,6 +206,7 @@ pub(crate) fn diagnostics(
205 AnyDiagnostic::MacroError(d) => macro_error::macro_error(&ctx, &d), 206 AnyDiagnostic::MacroError(d) => macro_error::macro_error(&ctx, &d),
206 AnyDiagnostic::MismatchedArgCount(d) => mismatched_arg_count::mismatched_arg_count(&ctx, &d), 207 AnyDiagnostic::MismatchedArgCount(d) => mismatched_arg_count::mismatched_arg_count(&ctx, &d),
207 AnyDiagnostic::MissingFields(d) => missing_fields::missing_fields(&ctx, &d), 208 AnyDiagnostic::MissingFields(d) => missing_fields::missing_fields(&ctx, &d),
209 AnyDiagnostic::MissingMatchArms(d) => missing_match_arms::missing_match_arms(&ctx, &d),
208 AnyDiagnostic::MissingOkOrSomeInTailExpr(d) => missing_ok_or_some_in_tail_expr::missing_ok_or_some_in_tail_expr(&ctx, &d), 210 AnyDiagnostic::MissingOkOrSomeInTailExpr(d) => missing_ok_or_some_in_tail_expr::missing_ok_or_some_in_tail_expr(&ctx, &d),
209 AnyDiagnostic::MissingUnsafe(d) => missing_unsafe::missing_unsafe(&ctx, &d), 211 AnyDiagnostic::MissingUnsafe(d) => missing_unsafe::missing_unsafe(&ctx, &d),
210 AnyDiagnostic::NoSuchField(d) => no_such_field::no_such_field(&ctx, &d), 212 AnyDiagnostic::NoSuchField(d) => no_such_field::no_such_field(&ctx, &d),
@@ -545,910 +547,3 @@ pub struct Claims {
545 ); 547 );
546 } 548 }
547} 549}
548
549#[cfg(test)]
550pub(super) mod match_check_tests {
551 use crate::diagnostics::tests::check_diagnostics;
552
553 #[test]
554 fn empty_tuple() {
555 check_diagnostics(
556 r#"
557fn main() {
558 match () { }
559 //^^ Missing match arm
560 match (()) { }
561 //^^^^ Missing match arm
562
563 match () { _ => (), }
564 match () { () => (), }
565 match (()) { (()) => (), }
566}
567"#,
568 );
569 }
570
571 #[test]
572 fn tuple_of_two_empty_tuple() {
573 check_diagnostics(
574 r#"
575fn main() {
576 match ((), ()) { }
577 //^^^^^^^^ Missing match arm
578
579 match ((), ()) { ((), ()) => (), }
580}
581"#,
582 );
583 }
584
585 #[test]
586 fn boolean() {
587 check_diagnostics(
588 r#"
589fn test_main() {
590 match false { }
591 //^^^^^ Missing match arm
592 match false { true => (), }
593 //^^^^^ Missing match arm
594 match (false, true) {}
595 //^^^^^^^^^^^^^ Missing match arm
596 match (false, true) { (true, true) => (), }
597 //^^^^^^^^^^^^^ Missing match arm
598 match (false, true) {
599 //^^^^^^^^^^^^^ Missing match arm
600 (false, true) => (),
601 (false, false) => (),
602 (true, false) => (),
603 }
604 match (false, true) { (true, _x) => (), }
605 //^^^^^^^^^^^^^ Missing match arm
606
607 match false { true => (), false => (), }
608 match (false, true) {
609 (false, _) => (),
610 (true, false) => (),
611 (_, true) => (),
612 }
613 match (false, true) {
614 (true, true) => (),
615 (true, false) => (),
616 (false, true) => (),
617 (false, false) => (),
618 }
619 match (false, true) {
620 (true, _x) => (),
621 (false, true) => (),
622 (false, false) => (),
623 }
624 match (false, true, false) {
625 (false, ..) => (),
626 (true, ..) => (),
627 }
628 match (false, true, false) {
629 (.., false) => (),
630 (.., true) => (),
631 }
632 match (false, true, false) { (..) => (), }
633}
634"#,
635 );
636 }
637
638 #[test]
639 fn tuple_of_tuple_and_bools() {
640 check_diagnostics(
641 r#"
642fn main() {
643 match (false, ((), false)) {}
644 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
645 match (false, ((), false)) { (true, ((), true)) => (), }
646 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
647 match (false, ((), false)) { (true, _) => (), }
648 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
649
650 match (false, ((), false)) {
651 (true, ((), true)) => (),
652 (true, ((), false)) => (),
653 (false, ((), true)) => (),
654 (false, ((), false)) => (),
655 }
656 match (false, ((), false)) {
657 (true, ((), true)) => (),
658 (true, ((), false)) => (),
659 (false, _) => (),
660 }
661}
662"#,
663 );
664 }
665
666 #[test]
667 fn enums() {
668 check_diagnostics(
669 r#"
670enum Either { A, B, }
671
672fn main() {
673 match Either::A { }
674 //^^^^^^^^^ Missing match arm
675 match Either::B { Either::A => (), }
676 //^^^^^^^^^ Missing match arm
677
678 match &Either::B {
679 //^^^^^^^^^^ Missing match arm
680 Either::A => (),
681 }
682
683 match Either::B {
684 Either::A => (), Either::B => (),
685 }
686 match &Either::B {
687 Either::A => (), Either::B => (),
688 }
689}
690"#,
691 );
692 }
693
694 #[test]
695 fn enum_containing_bool() {
696 check_diagnostics(
697 r#"
698enum Either { A(bool), B }
699
700fn main() {
701 match Either::B { }
702 //^^^^^^^^^ Missing match arm
703 match Either::B {
704 //^^^^^^^^^ Missing match arm
705 Either::A(true) => (), Either::B => ()
706 }
707
708 match Either::B {
709 Either::A(true) => (),
710 Either::A(false) => (),
711 Either::B => (),
712 }
713 match Either::B {
714 Either::B => (),
715 _ => (),
716 }
717 match Either::B {
718 Either::A(_) => (),
719 Either::B => (),
720 }
721
722}
723 "#,
724 );
725 }
726
727 #[test]
728 fn enum_different_sizes() {
729 check_diagnostics(
730 r#"
731enum Either { A(bool), B(bool, bool) }
732
733fn main() {
734 match Either::A(false) {
735 //^^^^^^^^^^^^^^^^ Missing match arm
736 Either::A(_) => (),
737 Either::B(false, _) => (),
738 }
739
740 match Either::A(false) {
741 Either::A(_) => (),
742 Either::B(true, _) => (),
743 Either::B(false, _) => (),
744 }
745 match Either::A(false) {
746 Either::A(true) | Either::A(false) => (),
747 Either::B(true, _) => (),
748 Either::B(false, _) => (),
749 }
750}
751"#,
752 );
753 }
754
755 #[test]
756 fn tuple_of_enum_no_diagnostic() {
757 check_diagnostics(
758 r#"
759enum Either { A(bool), B(bool, bool) }
760enum Either2 { C, D }
761
762fn main() {
763 match (Either::A(false), Either2::C) {
764 (Either::A(true), _) | (Either::A(false), _) => (),
765 (Either::B(true, _), Either2::C) => (),
766 (Either::B(false, _), Either2::C) => (),
767 (Either::B(_, _), Either2::D) => (),
768 }
769}
770"#,
771 );
772 }
773
774 #[test]
775 fn or_pattern_no_diagnostic() {
776 check_diagnostics(
777 r#"
778enum Either {A, B}
779
780fn main() {
781 match (Either::A, Either::B) {
782 (Either::A | Either::B, _) => (),
783 }
784}"#,
785 )
786 }
787
788 #[test]
789 fn mismatched_types() {
790 // Match statements with arms that don't match the
791 // expression pattern do not fire this diagnostic.
792 check_diagnostics(
793 r#"
794enum Either { A, B }
795enum Either2 { C, D }
796
797fn main() {
798 match Either::A {
799 Either2::C => (),
800 // ^^^^^^^^^^ Internal: match check bailed out
801 Either2::D => (),
802 }
803 match (true, false) {
804 (true, false, true) => (),
805 // ^^^^^^^^^^^^^^^^^^^ Internal: match check bailed out
806 (true) => (),
807 }
808 match (true, false) { (true,) => {} }
809 // ^^^^^^^ Internal: match check bailed out
810 match (0) { () => () }
811 // ^^ Internal: match check bailed out
812 match Unresolved::Bar { Unresolved::Baz => () }
813}
814 "#,
815 );
816 }
817
818 #[test]
819 fn mismatched_types_in_or_patterns() {
820 check_diagnostics(
821 r#"
822fn main() {
823 match false { true | () => {} }
824 // ^^^^^^^^^ Internal: match check bailed out
825 match (false,) { (true | (),) => {} }
826 // ^^^^^^^^^^^^ Internal: match check bailed out
827}
828"#,
829 );
830 }
831
832 #[test]
833 fn malformed_match_arm_tuple_enum_missing_pattern() {
834 // We are testing to be sure we don't panic here when the match
835 // arm `Either::B` is missing its pattern.
836 check_diagnostics(
837 r#"
838enum Either { A, B(u32) }
839
840fn main() {
841 match Either::A {
842 Either::A => (),
843 Either::B() => (),
844 }
845}
846"#,
847 );
848 }
849
850 #[test]
851 fn malformed_match_arm_extra_fields() {
852 check_diagnostics(
853 r#"
854enum A { B(isize, isize), C }
855fn main() {
856 match A::B(1, 2) {
857 A::B(_, _, _) => (),
858 // ^^^^^^^^^^^^^ Internal: match check bailed out
859 }
860 match A::B(1, 2) {
861 A::C(_) => (),
862 // ^^^^^^^ Internal: match check bailed out
863 }
864}
865"#,
866 );
867 }
868
869 #[test]
870 fn expr_diverges() {
871 check_diagnostics(
872 r#"
873enum Either { A, B }
874
875fn main() {
876 match loop {} {
877 Either::A => (),
878 // ^^^^^^^^^ Internal: match check bailed out
879 Either::B => (),
880 }
881 match loop {} {
882 Either::A => (),
883 // ^^^^^^^^^ Internal: match check bailed out
884 }
885 match loop { break Foo::A } {
886 //^^^^^^^^^^^^^^^^^^^^^ Missing match arm
887 Either::A => (),
888 }
889 match loop { break Foo::A } {
890 Either::A => (),
891 Either::B => (),
892 }
893}
894"#,
895 );
896 }
897
898 #[test]
899 fn expr_partially_diverges() {
900 check_diagnostics(
901 r#"
902enum Either<T> { A(T), B }
903
904fn foo() -> Either<!> { Either::B }
905fn main() -> u32 {
906 match foo() {
907 Either::A(val) => val,
908 Either::B => 0,
909 }
910}
911"#,
912 );
913 }
914
915 #[test]
916 fn enum_record() {
917 check_diagnostics(
918 r#"
919enum Either { A { foo: bool }, B }
920
921fn main() {
922 let a = Either::A { foo: true };
923 match a { }
924 //^ Missing match arm
925 match a { Either::A { foo: true } => () }
926 //^ Missing match arm
927 match a {
928 Either::A { } => (),
929 //^^^^^^^^^ Missing structure fields:
930 // | - foo
931 Either::B => (),
932 }
933 match a {
934 //^ Missing match arm
935 Either::A { } => (),
936 } //^^^^^^^^^ Missing structure fields:
937 // | - foo
938
939 match a {
940 Either::A { foo: true } => (),
941 Either::A { foo: false } => (),
942 Either::B => (),
943 }
944 match a {
945 Either::A { foo: _ } => (),
946 Either::B => (),
947 }
948}
949"#,
950 );
951 }
952
953 #[test]
954 fn enum_record_fields_out_of_order() {
955 check_diagnostics(
956 r#"
957enum Either {
958 A { foo: bool, bar: () },
959 B,
960}
961
962fn main() {
963 let a = Either::A { foo: true, bar: () };
964 match a {
965 //^ Missing match arm
966 Either::A { bar: (), foo: false } => (),
967 Either::A { foo: true, bar: () } => (),
968 }
969
970 match a {
971 Either::A { bar: (), foo: false } => (),
972 Either::A { foo: true, bar: () } => (),
973 Either::B => (),
974 }
975}
976"#,
977 );
978 }
979
980 #[test]
981 fn enum_record_ellipsis() {
982 check_diagnostics(
983 r#"
984enum Either {
985 A { foo: bool, bar: bool },
986 B,
987}
988
989fn main() {
990 let a = Either::B;
991 match a {
992 //^ Missing match arm
993 Either::A { foo: true, .. } => (),
994 Either::B => (),
995 }
996 match a {
997 //^ Missing match arm
998 Either::A { .. } => (),
999 }
1000
1001 match a {
1002 Either::A { foo: true, .. } => (),
1003 Either::A { foo: false, .. } => (),
1004 Either::B => (),
1005 }
1006
1007 match a {
1008 Either::A { .. } => (),
1009 Either::B => (),
1010 }
1011}
1012"#,
1013 );
1014 }
1015
1016 #[test]
1017 fn enum_tuple_partial_ellipsis() {
1018 check_diagnostics(
1019 r#"
1020enum Either {
1021 A(bool, bool, bool, bool),
1022 B,
1023}
1024
1025fn main() {
1026 match Either::B {
1027 //^^^^^^^^^ Missing match arm
1028 Either::A(true, .., true) => (),
1029 Either::A(true, .., false) => (),
1030 Either::A(false, .., false) => (),
1031 Either::B => (),
1032 }
1033 match Either::B {
1034 //^^^^^^^^^ Missing match arm
1035 Either::A(true, .., true) => (),
1036 Either::A(true, .., false) => (),
1037 Either::A(.., true) => (),
1038 Either::B => (),
1039 }
1040
1041 match Either::B {
1042 Either::A(true, .., true) => (),
1043 Either::A(true, .., false) => (),
1044 Either::A(false, .., true) => (),
1045 Either::A(false, .., false) => (),
1046 Either::B => (),
1047 }
1048 match Either::B {
1049 Either::A(true, .., true) => (),
1050 Either::A(true, .., false) => (),
1051 Either::A(.., true) => (),
1052 Either::A(.., false) => (),
1053 Either::B => (),
1054 }
1055}
1056"#,
1057 );
1058 }
1059
1060 #[test]
1061 fn never() {
1062 check_diagnostics(
1063 r#"
1064enum Never {}
1065
1066fn enum_(never: Never) {
1067 match never {}
1068}
1069fn enum_ref(never: &Never) {
1070 match never {}
1071 //^^^^^ Missing match arm
1072}
1073fn bang(never: !) {
1074 match never {}
1075}
1076"#,
1077 );
1078 }
1079
1080 #[test]
1081 fn unknown_type() {
1082 check_diagnostics(
1083 r#"
1084enum Option<T> { Some(T), None }
1085
1086fn main() {
1087 // `Never` is deliberately not defined so that it's an uninferred type.
1088 match Option::<Never>::None {
1089 None => (),
1090 Some(never) => match never {},
1091 // ^^^^^^^^^^^ Internal: match check bailed out
1092 }
1093 match Option::<Never>::None {
1094 //^^^^^^^^^^^^^^^^^^^^^ Missing match arm
1095 Option::Some(_never) => {},
1096 }
1097}
1098"#,
1099 );
1100 }
1101
1102 #[test]
1103 fn tuple_of_bools_with_ellipsis_at_end_missing_arm() {
1104 check_diagnostics(
1105 r#"
1106fn main() {
1107 match (false, true, false) {
1108 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
1109 (false, ..) => (),
1110 }
1111}"#,
1112 );
1113 }
1114
1115 #[test]
1116 fn tuple_of_bools_with_ellipsis_at_beginning_missing_arm() {
1117 check_diagnostics(
1118 r#"
1119fn main() {
1120 match (false, true, false) {
1121 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
1122 (.., false) => (),
1123 }
1124}"#,
1125 );
1126 }
1127
1128 #[test]
1129 fn tuple_of_bools_with_ellipsis_in_middle_missing_arm() {
1130 check_diagnostics(
1131 r#"
1132fn main() {
1133 match (false, true, false) {
1134 //^^^^^^^^^^^^^^^^^^^^ Missing match arm
1135 (true, .., false) => (),
1136 }
1137}"#,
1138 );
1139 }
1140
1141 #[test]
1142 fn record_struct() {
1143 check_diagnostics(
1144 r#"struct Foo { a: bool }
1145fn main(f: Foo) {
1146 match f {}
1147 //^ Missing match arm
1148 match f { Foo { a: true } => () }
1149 //^ Missing match arm
1150 match &f { Foo { a: true } => () }
1151 //^^ Missing match arm
1152 match f { Foo { a: _ } => () }
1153 match f {
1154 Foo { a: true } => (),
1155 Foo { a: false } => (),
1156 }
1157 match &f {
1158 Foo { a: true } => (),
1159 Foo { a: false } => (),
1160 }
1161}
1162"#,
1163 );
1164 }
1165
1166 #[test]
1167 fn tuple_struct() {
1168 check_diagnostics(
1169 r#"struct Foo(bool);
1170fn main(f: Foo) {
1171 match f {}
1172 //^ Missing match arm
1173 match f { Foo(true) => () }
1174 //^ Missing match arm
1175 match f {
1176 Foo(true) => (),
1177 Foo(false) => (),
1178 }
1179}
1180"#,
1181 );
1182 }
1183
1184 #[test]
1185 fn unit_struct() {
1186 check_diagnostics(
1187 r#"struct Foo;
1188fn main(f: Foo) {
1189 match f {}
1190 //^ Missing match arm
1191 match f { Foo => () }
1192}
1193"#,
1194 );
1195 }
1196
1197 #[test]
1198 fn record_struct_ellipsis() {
1199 check_diagnostics(
1200 r#"struct Foo { foo: bool, bar: bool }
1201fn main(f: Foo) {
1202 match f { Foo { foo: true, .. } => () }
1203 //^ Missing match arm
1204 match f {
1205 //^ Missing match arm
1206 Foo { foo: true, .. } => (),
1207 Foo { bar: false, .. } => ()
1208 }
1209 match f { Foo { .. } => () }
1210 match f {
1211 Foo { foo: true, .. } => (),
1212 Foo { foo: false, .. } => ()
1213 }
1214}
1215"#,
1216 );
1217 }
1218
1219 #[test]
1220 fn internal_or() {
1221 check_diagnostics(
1222 r#"
1223fn main() {
1224 enum Either { A(bool), B }
1225 match Either::B {
1226 //^^^^^^^^^ Missing match arm
1227 Either::A(true | false) => (),
1228 }
1229}
1230"#,
1231 );
1232 }
1233
1234 #[test]
1235 fn no_panic_at_unimplemented_subpattern_type() {
1236 check_diagnostics(
1237 r#"
1238struct S { a: char}
1239fn main(v: S) {
1240 match v { S{ a } => {} }
1241 match v { S{ a: _x } => {} }
1242 match v { S{ a: 'a' } => {} }
1243 //^^^^^^^^^^^ Internal: match check bailed out
1244 match v { S{..} => {} }
1245 match v { _ => {} }
1246 match v { }
1247 //^ Missing match arm
1248}
1249"#,
1250 );
1251 }
1252
1253 #[test]
1254 fn binding() {
1255 check_diagnostics(
1256 r#"
1257fn main() {
1258 match true {
1259 _x @ true => {}
1260 false => {}
1261 }
1262 match true { _x @ true => {} }
1263 //^^^^ Missing match arm
1264}
1265"#,
1266 );
1267 }
1268
1269 #[test]
1270 fn binding_ref_has_correct_type() {
1271 // Asserts `PatKind::Binding(ref _x): bool`, not &bool.
1272 // If that's not true match checking will panic with "incompatible constructors"
1273 // FIXME: make facilities to test this directly like `tests::check_infer(..)`
1274 check_diagnostics(
1275 r#"
1276enum Foo { A }
1277fn main() {
1278 // FIXME: this should not bail out but current behavior is such as the old algorithm.
1279 // ExprValidator::validate_match(..) checks types of top level patterns incorrecly.
1280 match Foo::A {
1281 ref _x => {}
1282 // ^^^^^^ Internal: match check bailed out
1283 Foo::A => {}
1284 }
1285 match (true,) {
1286 (ref _x,) => {}
1287 (true,) => {}
1288 }
1289}
1290"#,
1291 );
1292 }
1293
1294 #[test]
1295 fn enum_non_exhaustive() {
1296 check_diagnostics(
1297 r#"
1298//- /lib.rs crate:lib
1299#[non_exhaustive]
1300pub enum E { A, B }
1301fn _local() {
1302 match E::A { _ => {} }
1303 match E::A {
1304 E::A => {}
1305 E::B => {}
1306 }
1307 match E::A {
1308 E::A | E::B => {}
1309 }
1310}
1311
1312//- /main.rs crate:main deps:lib
1313use lib::E;
1314fn main() {
1315 match E::A { _ => {} }
1316 match E::A {
1317 //^^^^ Missing match arm
1318 E::A => {}
1319 E::B => {}
1320 }
1321 match E::A {
1322 //^^^^ Missing match arm
1323 E::A | E::B => {}
1324 }
1325}
1326"#,
1327 );
1328 }
1329
1330 #[test]
1331 fn match_guard() {
1332 check_diagnostics(
1333 r#"
1334fn main() {
1335 match true {
1336 true if false => {}
1337 true => {}
1338 false => {}
1339 }
1340 match true {
1341 //^^^^ Missing match arm
1342 true if false => {}
1343 false => {}
1344 }
1345}
1346"#,
1347 );
1348 }
1349
1350 #[test]
1351 fn pattern_type_is_of_substitution() {
1352 cov_mark::check!(match_check_wildcard_expanded_to_substitutions);
1353 check_diagnostics(
1354 r#"
1355struct Foo<T>(T);
1356struct Bar;
1357fn main() {
1358 match Foo(Bar) {
1359 _ | Foo(Bar) => {}
1360 }
1361}
1362"#,
1363 );
1364 }
1365
1366 #[test]
1367 fn record_struct_no_such_field() {
1368 check_diagnostics(
1369 r#"
1370struct Foo { }
1371fn main(f: Foo) {
1372 match f { Foo { bar } => () }
1373 // ^^^^^^^^^^^ Internal: match check bailed out
1374}
1375"#,
1376 );
1377 }
1378
1379 #[test]
1380 fn match_ergonomics_issue_9095() {
1381 check_diagnostics(
1382 r#"
1383enum Foo<T> { A(T) }
1384fn main() {
1385 match &Foo::A(true) {
1386 _ => {}
1387 Foo::A(_) => {}
1388 }
1389}
1390"#,
1391 );
1392 }
1393
1394 mod false_negatives {
1395 //! The implementation of match checking here is a work in progress. As we roll this out, we
1396 //! prefer false negatives to false positives (ideally there would be no false positives). This
1397 //! test module should document known false negatives. Eventually we will have a complete
1398 //! implementation of match checking and this module will be empty.
1399 //!
1400 //! The reasons for documenting known false negatives:
1401 //!
1402 //! 1. It acts as a backlog of work that can be done to improve the behavior of the system.
1403 //! 2. It ensures the code doesn't panic when handling these cases.
1404 use super::*;
1405
1406 #[test]
1407 fn integers() {
1408 // We don't currently check integer exhaustiveness.
1409 check_diagnostics(
1410 r#"
1411fn main() {
1412 match 5 {
1413 10 => (),
1414 // ^^ Internal: match check bailed out
1415 11..20 => (),
1416 }
1417}
1418"#,
1419 );
1420 }
1421
1422 #[test]
1423 fn reference_patterns_at_top_level() {
1424 check_diagnostics(
1425 r#"
1426fn main() {
1427 match &false {
1428 &true => {}
1429 // ^^^^^ Internal: match check bailed out
1430 }
1431}
1432 "#,
1433 );
1434 }
1435
1436 #[test]
1437 fn reference_patterns_in_fields() {
1438 check_diagnostics(
1439 r#"
1440fn main() {
1441 match (&false,) {
1442 (true,) => {}
1443 // ^^^^^^^ Internal: match check bailed out
1444 }
1445 match (&false,) {
1446 (&true,) => {}
1447 // ^^^^^^^^ Internal: match check bailed out
1448 }
1449}
1450 "#,
1451 );
1452 }
1453 }
1454}
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