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c5c05c2528944e64bea76cb9e07e2aeb4be3cb15
rust/tests/ui/pattern/usefulness
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Esteban Küber 335d05aee5 Add additional context for non-sructural type constant used in pattern 
- Point at type that should derive `PartialEq` to be structural.
- Point at manual `impl PartialEq`, explaining that it is not sufficient to be structural.

```
error: constant of non-structural type `MyType` in a pattern
  --> $DIR/const-partial_eq-fallback-ice.rs:14:12
   |
LL | struct MyType;
   | ------------- `MyType` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
...
LL | const CONSTANT: &&MyType = &&MyType;
   | ------------------------ constant defined here
...
LL |     if let CONSTANT = &&MyType {
   |            ^^^^^^^^ constant of non-structural type
   |
note: the `PartialEq` trait must be derived, manual `impl`s are not sufficient; see https://doc.rust-lang.org/stable/std/marker/trait.StructuralPartialEq.html for details
  --> $DIR/const-partial_eq-fallback-ice.rs:5:1
   |
LL | impl PartialEq<usize> for MyType {
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
```
2024-12-04 20:29:36 +00:00
..
auxiliary
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integer-ranges
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
always-inhabited-union-ref.exhaustive_patterns.stderr
Update tests
2024-08-10 12:07:17 +02:00
always-inhabited-union-ref.normal.stderr
Update tests
2024-08-10 12:07:17 +02:00
always-inhabited-union-ref.rs
Update tests
2024-08-10 12:07:17 +02:00
conflicting_bindings.rs
Also check if let chains with multiple lets in these two tests
2024-11-16 05:01:52 +01:00
conflicting_bindings.stderr
Also check if let chains with multiple lets in these two tests
2024-11-16 05:01:52 +01:00
const-partial_eq-fallback-ice.rs
Add additional context for non-sructural type constant used in pattern
2024-12-04 20:29:36 +00:00
const-partial_eq-fallback-ice.stderr
Add additional context for non-sructural type constant used in pattern
2024-12-04 20:29:36 +00:00
const-pat-ice.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
const-private-fields.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
consts-opaque.rs
turn pointer_structural_match into a hard error
2024-05-03 15:56:59 +02:00
consts-opaque.stderr
Tweak ptr in pattern error
2024-12-04 20:29:36 +00:00
deny-irrefutable-let-patterns.rs
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deny-irrefutable-let-patterns.stderr
Remove hir::Guard
2024-01-05 10:56:59 +00:00
doc-hidden-fields.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
doc-hidden-fields.stderr
add third help hint to diagnostic error E0027
2024-10-24 03:17:28 -04:00
doc-hidden-non-exhaustive.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
doc-hidden-non-exhaustive.stderr
Tweak spans for "adt defined here" note
2023-11-03 18:26:16 +01:00
empty-match-check-notes.exhaustive_patterns.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-match-check-notes.normal.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-match-check-notes.rs
Add a note with a link to explain empty types
2024-08-19 21:57:37 +02:00
empty-match.exhaustive_patterns.stderr
Test that 0/unknown-length arrays are nonempty
2024-08-10 12:07:17 +02:00
empty-match.normal.stderr
Test that 0/unknown-length arrays are nonempty
2024-08-10 12:07:17 +02:00
empty-match.rs
Test that 0/unknown-length arrays are nonempty
2024-08-10 12:07:17 +02:00
empty-types.exhaustive_patterns.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-types.min_exh_pats.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-types.never_pats.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-types.normal.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
empty-types.rs
Revert warning empty patterns as unreachable
2024-09-11 18:36:45 +02:00
explain-unreachable-pats.rs
Revert warning empty patterns as unreachable
2024-09-11 18:36:45 +02:00
explain-unreachable-pats.stderr
Add a machine-applicable suggestion to "unreachable pattern"
2024-09-13 21:01:29 +02:00
floats.rs
Replace f16 and f128 pattern matching stubs with real implementations
2024-06-23 04:28:42 -05:00
floats.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
guards.rs
Stabilize exclusive_range
2024-05-02 19:42:31 -04:00
guards.stderr
Stabilize exclusive_range
2024-05-02 19:42:31 -04:00
impl-trait.rs
Revert warning empty patterns as unreachable
2024-09-11 18:36:45 +02:00
impl-trait.stderr
Get rid of check_opaque_type_well_formed
2024-11-08 03:46:27 +00:00
irrefutable-let-patterns.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
irrefutable-unit.rs
tests: remove //@ pretty-expanded usages
2024-11-26 02:50:48 +08:00
issue-2111.rs
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issue-2111.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-3096-1.rs
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issue-3096-1.stderr
Show number in error message even for one error
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issue-3096-2.rs
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issue-3096-2.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-3601.rs
Keep rows with guards in the matrix
2023-11-22 03:25:15 +01:00
issue-3601.stderr
Auto merge of #117611 - Nadrieril:linear-pass-take-4, r=cjgillot
2023-11-26 00:14:14 +00:00
issue-4321.rs
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issue-4321.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-12116.rs
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issue-12116.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
issue-12369.rs
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issue-12369.stderr
Reword the "unreachable pattern" explanations
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issue-13727.rs
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issue-13727.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
issue-15129.rs
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issue-15129.stderr
Show number in error message even for one error
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issue-30240-b.rs
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issue-30240-b.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
issue-30240-rpass.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-30240.rs
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issue-30240.stderr
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issue-31221.rs
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issue-31221.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
issue-31561.rs
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issue-31561.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
issue-35609.rs
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issue-35609.stderr
Tweak diagnostic for consistency
2023-11-02 03:19:19 +01:00
issue-39362.rs
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issue-39362.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-40221.rs
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issue-40221.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-50900.rs
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issue-50900.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-53820-slice-pattern-large-array.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-56379.rs
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issue-56379.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-57472.rs
Stabilize THIR unsafeck
2024-01-05 10:00:59 +00:00
issue-57472.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
issue-65413-constants-and-slices-exhaustiveness.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-66501.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-71930-type-of-match-scrutinee.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-72377.rs
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issue-72377.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-72476-and-89393-associated-type.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-78123-non-exhaustive-reference.rs
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issue-78123-non-exhaustive-reference.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-78549-ref-pat-and-str.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-80501-or-pat-and-macro.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-82772-match-box-as-struct.rs
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issue-82772-match-box-as-struct.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-85222-types-containing-non-exhaustive-types.rs
Match usize/isize exhaustively
2023-10-27 19:56:12 +02:00
issue-85222-types-containing-non-exhaustive-types.stderr
Remove the precise_pointer_size_matching feature gate
2023-12-04 11:56:21 +01:00
issue-88747.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
issue-105479-str-non-exhaustiveness.rs
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issue-105479-str-non-exhaustiveness.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
issue-118437-exponential-time-on-diagonal-match.rs
Add and update tests to use pattern_complexity
2024-03-03 13:10:15 +01:00
issue-119493-type-error-ice.rs
Abort analysis on type error
2024-01-07 22:13:08 +01:00
issue-119493-type-error-ice.stderr
Bless tests
2024-01-13 12:46:58 -05:00
issue-119778-type-error-ice.rs
Add test case for #119778
2024-01-10 14:50:48 +01:00
issue-119778-type-error-ice.stderr
Bless tests
2024-01-13 12:46:58 -05:00
match-arm-statics-2.rs
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match-arm-statics-2.stderr
Unify expanded constants and named constants in PatKind
2024-11-17 23:40:00 +00:00
match-arm-statics.rs
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match-arm-statics.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
match-byte-array-patterns-2.rs
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match-byte-array-patterns-2.stderr
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match-byte-array-patterns.rs
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match-byte-array-patterns.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
match-non-exhaustive.rs
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match-non-exhaustive.stderr
Keep rows with guards in the matrix
2023-11-22 03:25:15 +01:00
match-privately-empty.exhaustive_patterns.stderr
Update tests
2024-08-10 12:07:17 +02:00
match-privately-empty.min_exhaustive_patterns.stderr
Unmark the feature gate as incomplete
2024-02-13 16:45:29 +01:00
match-privately-empty.normal.stderr
Update tests
2024-08-10 12:07:17 +02:00
match-privately-empty.rs
Update tests
2024-08-10 12:07:17 +02:00
match-ref-ice.rs
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match-ref-ice.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
match-slice-patterns.rs
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match-slice-patterns.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
match-vec-fixed.rs
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match-vec-fixed.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
match-vec-unreachable.rs
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match-vec-unreachable.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
nested-exhaustive-match.rs
tests: remove //@ pretty-expanded usages
2024-11-26 02:50:48 +08:00
nested-non-exhaustive-enums.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
nested-non-exhaustive-enums.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
non-exhaustive-defined-here.rs
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
non-exhaustive-defined-here.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
non-exhaustive-match-nested.rs
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non-exhaustive-match-nested.stderr
Tweak spans for "adt defined here" note
2023-11-03 18:26:16 +01:00
non-exhaustive-match.rs
remove illegal_floating_point_literal_pattern lint
2024-01-26 17:25:02 +01:00
non-exhaustive-match.stderr
remove illegal_floating_point_literal_pattern lint
2024-01-26 17:25:02 +01:00
non-exhaustive-pattern-witness.rs
Match usize/isize exhaustively
2023-10-27 19:56:12 +02:00
non-exhaustive-pattern-witness.stderr
Tweak spans for "adt defined here" note
2023-11-03 18:26:16 +01:00
refutable-pattern-errors.rs
Match usize/isize exhaustively
2023-10-27 19:56:12 +02:00
refutable-pattern-errors.stderr
Update tests for new TRPL chapter order
2024-11-23 08:57:25 -07:00
refutable-pattern-in-fn-arg.rs
Classify closure arguments in refutable pattern in argument error
2024-01-26 23:54:08 +08:00
refutable-pattern-in-fn-arg.stderr
Classify closure arguments in refutable pattern in argument error
2024-01-26 23:54:08 +08:00
rustfix-unreachable-pattern.fixed
Add a machine-applicable suggestion to "unreachable pattern"
2024-09-13 21:01:29 +02:00
rustfix-unreachable-pattern.rs
Add a machine-applicable suggestion to "unreachable pattern"
2024-09-13 21:01:29 +02:00
rustfix-unreachable-pattern.stderr
Add a machine-applicable suggestion to "unreachable pattern"
2024-09-13 21:01:29 +02:00
slice_of_empty.exhaustive_patterns.stderr
Update tests
2024-08-10 12:07:17 +02:00
slice_of_empty.min_exhaustive_patterns.stderr
Explain why we require _ for empty patterns
2024-07-21 15:24:27 +02:00
slice_of_empty.normal.stderr
Update tests
2024-08-10 12:07:17 +02:00
slice_of_empty.rs
Update tests
2024-08-10 12:07:17 +02:00
slice-pattern-const-2.rs
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slice-pattern-const-2.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
slice-pattern-const-3.rs
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slice-pattern-const-3.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
slice-pattern-const.rs
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slice-pattern-const.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
slice-patterns-exhaustiveness.rs
Keep rows with guards in the matrix
2023-11-22 03:25:15 +01:00
slice-patterns-exhaustiveness.stderr
Unify expanded constants and named constants in PatKind
2024-11-17 23:40:00 +00:00
slice-patterns-irrefutable.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
slice-patterns-reachability.rs
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slice-patterns-reachability.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
stable-gated-fields.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
stable-gated-fields.stderr
add third help hint to diagnostic error E0027
2024-10-24 03:17:28 -04:00
stable-gated-patterns.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
stable-gated-patterns.stderr
Tweak spans for "adt defined here" note
2023-11-03 18:26:16 +01:00
struct-like-enum-nonexhaustive.rs
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struct-like-enum-nonexhaustive.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
struct-pattern-match-useless.rs
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struct-pattern-match-useless.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
top-level-alternation.rs
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top-level-alternation.stderr
Reword the "unreachable pattern" explanations
2024-08-19 21:39:57 +02:00
tuple-struct-nonexhaustive.rs
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tuple-struct-nonexhaustive.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00
type_polymorphic_byte_str_literals.rs
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type_polymorphic_byte_str_literals.stderr
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uninhabited.rs
Update tests
2024-08-10 12:07:17 +02:00
unions.rs
Fix union handling in exhaustiveness
2024-04-01 00:01:46 +02:00
unions.stderr
Fix union handling in exhaustiveness
2024-04-01 00:01:46 +02:00
unstable-gated-fields.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
unstable-gated-fields.stderr
add third help hint to diagnostic error E0027
2024-10-24 03:17:28 -04:00
unstable-gated-patterns.rs
[AUTO-GENERATED] Migrate ui tests from // to //@ directives
2024-02-16 20:02:50 +00:00
unstable-gated-patterns.stderr
Show number in error message even for one error
2023-11-24 19:15:52 +01:00