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fixed const_generics error help #80714

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merged 2 commits into from
Jan 6, 2021
Merged

fixed const_generics error help #80714

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f37e737
fixed const_generics error help
jakevossen5 Jan 5, 2021
65f7dba
fixed feature gate stderr
jakevossen5 Jan 5, 2021
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2 changes: 1 addition & 1 deletion compiler/rustc_typeck/src/check/wfcheck.rs
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Expand Up @@ -330,7 +330,7 @@ fn check_param_wf(tcx: TyCtxt<'_>, param: &hir::GenericParam<'_>) {
),
)
.note("the only supported types are integers, `bool` and `char`")
.help("more complex types are supported with `#[feature(const_generics)]`")
.help("more complex types are supported with `#![feature(const_generics)]`")
.emit()
}
};
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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/array-size-in-generic-struct-param.min.stderr
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Expand Up @@ -23,7 +23,7 @@ LL | struct B<const CFG: Config> {
| ^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 3 previous errors

4 changes: 2 additions & 2 deletions src/test/ui/const-generics/const-param-before-other-params.min.stderr
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Expand Up @@ -17,7 +17,7 @@ LL | fn bar<const X: (), 'a>(_: &'a ()) {
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `()` is forbidden as the type of a const generic parameter
--> $DIR/const-param-before-other-params.rs:10:17
Expand All @@ -26,7 +26,7 @@ LL | fn foo<const X: (), T>(_: &T) {}
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 4 previous errors

10 changes: 5 additions & 5 deletions src/test/ui/const-generics/const-param-elided-lifetime.min.stderr
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Expand Up @@ -35,7 +35,7 @@ LL | struct A<const N: &u8>;
| ^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static u8` is forbidden as the type of a const generic parameter
--> $DIR/const-param-elided-lifetime.rs:15:15
Expand All @@ -44,7 +44,7 @@ LL | impl<const N: &u8> A<N> {
| ^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static u8` is forbidden as the type of a const generic parameter
--> $DIR/const-param-elided-lifetime.rs:23:15
Expand All @@ -53,7 +53,7 @@ LL | impl<const N: &u8> B for A<N> {}
| ^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static u8` is forbidden as the type of a const generic parameter
--> $DIR/const-param-elided-lifetime.rs:27:17
Expand All @@ -62,7 +62,7 @@ LL | fn bar<const N: &u8>() {}
| ^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static u8` is forbidden as the type of a const generic parameter
--> $DIR/const-param-elided-lifetime.rs:18:21
Expand All @@ -71,7 +71,7 @@ LL | fn foo<const M: &u8>(&self) {}
| ^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 10 previous errors

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4 changes: 2 additions & 2 deletions src/test/ui/const-generics/const-param-type-depends-on-const-param.min.stderr
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Expand Up @@ -17,7 +17,7 @@ LL | pub struct Dependent<const N: usize, const X: [u8; N]>([(); N]);
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `[u8; _]` is forbidden as the type of a const generic parameter
--> $DIR/const-param-type-depends-on-const-param.rs:15:35
Expand All @@ -26,7 +26,7 @@ LL | pub struct SelfDependent<const N: [u8; N]>;
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 4 previous errors

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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/different_byref.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Const<const V: [usize; 1]> {}
| ^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

4 changes: 2 additions & 2 deletions src/test/ui/const-generics/forbid-non-structural_match-types.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct B<const X: A>; // ok
| ^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `C` is forbidden as the type of a const generic parameter
--> $DIR/forbid-non-structural_match-types.rs:14:19
Expand All @@ -14,7 +14,7 @@ LL | struct D<const X: C>;
| ^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error[E0741]: `C` must be annotated with `#[derive(PartialEq, Eq)]` to be used as the type of a const parameter
--> $DIR/forbid-non-structural_match-types.rs:14:19
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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/intrinsics-type_name-as-const-argument.min.stderr
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Expand Up @@ -14,7 +14,7 @@ LL | trait Trait<const S: &'static str> {}
| ^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 2 previous errors

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issue-66596-impl-trait-for-str-const-arg.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | trait Trait<const NAME: &'static str> {
| ^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-62579-no-match.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn foo<const T: NoMatch>() -> bool {
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-62878.min.stderr
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Expand Up @@ -11,7 +11,7 @@ LL | fn foo<const N: usize, const A: [u8; N]>() {}
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 2 previous errors

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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-63322-forbid-dyn.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn test<const T: &'static dyn A>() {
| ^^^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error[E0741]: `&'static (dyn A + 'static)` must be annotated with `#[derive(PartialEq, Eq)]` to be used as the type of a const parameter
--> $DIR/issue-63322-forbid-dyn.rs:9:18
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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-68615-adt.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Const<const V: [usize; 0]> {}
| ^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-68615-array.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Foo<const V: [usize; 0] > {}
| ^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-71169.min.stderr
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Expand Up @@ -11,7 +11,7 @@ LL | fn foo<const LEN: usize, const DATA: [u8; LEN]>() {}
| ^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 2 previous errors

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2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-73491.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn hoge<const IN: [u32; LEN]>() {}
| ^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

4 changes: 2 additions & 2 deletions src/test/ui/const-generics/issues/issue-74101.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn test<const N: [u8; 1 + 2]>() {}
| ^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `[u8; _]` is forbidden as the type of a const generic parameter
--> $DIR/issue-74101.rs:9:21
Expand All @@ -14,7 +14,7 @@ LL | struct Foo<const N: [u8; 1 + 2]>;
| ^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 2 previous errors

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-74255.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn ice_struct_fn<const I: IceEnum>() {}
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

10 changes: 5 additions & 5 deletions src/test/ui/const-generics/issues/issue-74950.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Outer<const I: Inner>;
| ^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `Inner` is forbidden as the type of a const generic parameter
--> $DIR/issue-74950.rs:17:23
Expand All @@ -14,7 +14,7 @@ LL | struct Outer<const I: Inner>;
| ^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `Inner` is forbidden as the type of a const generic parameter
--> $DIR/issue-74950.rs:17:23
Expand All @@ -23,7 +23,7 @@ LL | struct Outer<const I: Inner>;
| ^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `Inner` is forbidden as the type of a const generic parameter
--> $DIR/issue-74950.rs:17:23
Expand All @@ -32,7 +32,7 @@ LL | struct Outer<const I: Inner>;
| ^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `Inner` is forbidden as the type of a const generic parameter
--> $DIR/issue-74950.rs:17:23
Expand All @@ -41,7 +41,7 @@ LL | struct Outer<const I: Inner>;
| ^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 5 previous errors

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/issues/issue-75047.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Foo<const N: [u8; Bar::<u32>::value()]>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

14 changes: 7 additions & 7 deletions src/test/ui/const-generics/min_const_generics/complex-types.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Foo<const N: [u8; 0]>;
| ^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `()` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:6:21
Expand All @@ -14,7 +14,7 @@ LL | struct Bar<const N: ()>;
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `No` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:11:21
Expand All @@ -23,7 +23,7 @@ LL | struct Fez<const N: No>;
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static u8` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:14:21
Expand All @@ -32,7 +32,7 @@ LL | struct Faz<const N: &'static u8>;
| ^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `!` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:17:21
Expand All @@ -41,7 +41,7 @@ LL | struct Fiz<const N: !>;
| ^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `()` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:20:19
Expand All @@ -50,7 +50,7 @@ LL | enum Goo<const N: ()> { A, B }
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `()` is forbidden as the type of a const generic parameter
--> $DIR/complex-types.rs:23:20
Expand All @@ -59,7 +59,7 @@ LL | union Boo<const N: ()> { a: () }
| ^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 7 previous errors

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/min_const_generics/static-reference-array-const-param.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | fn a<const X: &'static [u32]>() {}
| ^^^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/min_const_generics/transmute-const-param-static-reference.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct Const<const P: &'static ()>;
| ^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to previous error

2 changes: 1 addition & 1 deletion src/test/ui/const-generics/nested-type.min.stderr
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Expand Up @@ -12,7 +12,7 @@ LL | | }]>;
| |__^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error[E0015]: calls in constants are limited to constant functions, tuple structs and tuple variants
--> $DIR/nested-type.rs:15:5
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4 changes: 2 additions & 2 deletions src/test/ui/const-generics/slice-const-param-mismatch.min.stderr
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Expand Up @@ -5,7 +5,7 @@ LL | struct ConstString<const T: &'static str>;
| ^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: `&'static [u8]` is forbidden as the type of a const generic parameter
--> $DIR/slice-const-param-mismatch.rs:9:28
Expand All @@ -14,7 +14,7 @@ LL | struct ConstBytes<const T: &'static [u8]>;
| ^^^^^^^^^^^^^
|
= note: the only supported types are integers, `bool` and `char`
= help: more complex types are supported with `#[feature(const_generics)]`
= help: more complex types are supported with `#![feature(const_generics)]`

error: aborting due to 2 previous errors

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