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rust/tests/ui/rfcs/rfc-1445-restrict-constants-in-patterns/issue-62307-match-ref-ref-forbidden-without-eq.stderr

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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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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error: constant of non-structural type `B` in a pattern
--> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:35:9
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
2019-07-03 16:54:08 +02:00
|
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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LL | struct B(i32);
| -------- `B` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
...
On `const` pattern errors, point at the `const` item definition Centralize emitting an error in `const_to_pat` so that all errors from that evaluating a `const` in a pattern can add addditional information. With this, now point at the `const` item's definition: ``` error[E0158]: constant pattern depends on a generic parameter --> $DIR/associated-const-type-parameter-pattern.rs:20:9 | LL | pub trait Foo { | ------------- LL | const X: EFoo; | ------------- constant defined here ... LL | A::X => println!("A::X"), | ^^^^ ```
2024-11-20 02:15:21 +00:00
LL | const RR_B1: & & B = & & B(1);
| ------------------ constant defined here
...
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
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LL | RR_B1 => { println!("CLAIM RR0: {:?} matches {:?}", RR_B1, RR_B0); }
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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| ^^^^^ 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/issue-62307-match-ref-ref-forbidden-without-eq.rs:22:1
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
2019-07-03 16:54:08 +02:00
|
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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LL | impl PartialEq for B {
| ^^^^^^^^^^^^^^^^^^^^
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
2019-07-03 16:54:08 +02:00
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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error: constant of non-structural type `B` in a pattern
--> $DIR/issue-62307-match-ref-ref-forbidden-without-eq.rs:42:9
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
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|
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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LL | struct B(i32);
| -------- `B` must be annotated with `#[derive(PartialEq)]` to be usable in patterns
...
On `const` pattern errors, point at the `const` item definition Centralize emitting an error in `const_to_pat` so that all errors from that evaluating a `const` in a pattern can add addditional information. With this, now point at the `const` item's definition: ``` error[E0158]: constant pattern depends on a generic parameter --> $DIR/associated-const-type-parameter-pattern.rs:20:9 | LL | pub trait Foo { | ------------- LL | const X: EFoo; | ------------- constant defined here ... LL | A::X => println!("A::X"), | ^^^^ ```
2024-11-20 02:15:21 +00:00
LL | const RR_B1: & & B = & & B(1);
| ------------------ constant defined here
...
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
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LL | RR_B1 => { println!("CLAIM RR1: {:?} matches {:?}", RR_B1, RR_B1); }
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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| ^^^^^ 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/issue-62307-match-ref-ref-forbidden-without-eq.rs:22:1
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
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|
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 { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ```
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LL | impl PartialEq for B {
| ^^^^^^^^^^^^^^^^^^^^
Regression tests and updates to existing tests. The regression tests explore: (direct | indirect | doubly-indirect | unsafe) x (embedded | param): where: embedded: `struct Wrapper(... NoDerive ...);` param: `struct Wrapper<X>(... X ...);` direct: `const A: Wrapper<...> = Wrapper(NoDerive);` indirect: `const A: & & Wrapper<...> = Wrapper(NoDerive)` doubly-indirect: `const A: & & Wrapper<...> = & & Wrapper(& & NoDerive)` unsafe: `const A: UnsafeWrap<...> = UnsafeWrap(std::ptr::null())`
2019-07-03 16:54:08 +02:00
remove IndirectStructuralMatch lint, emit the usual hard error instead
2024-05-03 15:24:53 +02:00
error: aborting due to 2 previous errors
show indirect_structural_match and pointer_structural_match in future compat reports
2024-01-27 13:52:06 +01:00
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