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generic_arg_infer: placeholder in signature err
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12 changes: 0 additions & 12 deletions
12
src/test/ui/const-generics/generic_arg_infer/array-in-sig.rs
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9 changes: 0 additions & 9 deletions
9
src/test/ui/const-generics/generic_arg_infer/array-in-sig.stderr
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61 changes: 61 additions & 0 deletions
61
src/test/ui/const-generics/generic_arg_infer/in-signature.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| #![crate_type = "rlib"] | ||
| #![feature(generic_arg_infer)] | ||
|
|
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| struct Foo<const N: usize>; | ||
| struct Bar<T, const N: usize>(T); | ||
|
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| fn arr_fn() -> [u8; _] { | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types | ||
| [0; 3] | ||
| } | ||
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| fn ty_fn() -> Bar<i32, _> { | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types | ||
| Bar::<i32, 3>(0) | ||
| } | ||
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| fn ty_fn_mixed() -> Bar<_, _> { | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types | ||
| Bar::<i32, 3>(0) | ||
| } | ||
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| const ARR_CT: [u8; _] = [0; 3]; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| static ARR_STATIC: [u8; _] = [0; 3]; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables | ||
| const TY_CT: Bar<i32, _> = Bar::<i32, 3>(0); | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| static TY_STATIC: Bar<i32, _> = Bar::<i32, 3>(0); | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables | ||
| const TY_CT_MIXED: Bar<_, _> = Bar::<i32, 3>(0); | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| static TY_STATIC_MIXED: Bar<_, _> = Bar::<i32, 3>(0); | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables | ||
| trait ArrAssocConst { | ||
| const ARR: [u8; _]; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| } | ||
| trait TyAssocConst { | ||
| const ARR: Bar<i32, _>; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| } | ||
| trait TyAssocConstMixed { | ||
| const ARR: Bar<_, _>; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants | ||
| } | ||
|
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| trait AssocTy { | ||
| type Assoc; | ||
| } | ||
| impl AssocTy for i8 { | ||
| type Assoc = [u8; _]; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types | ||
| } | ||
| impl AssocTy for i16 { | ||
| type Assoc = Bar<i32, _>; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types | ||
| } | ||
| impl AssocTy for i32 { | ||
| type Assoc = Bar<_, _>; | ||
| //~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types | ||
| } |
119 changes: 119 additions & 0 deletions
119
src/test/ui/const-generics/generic_arg_infer/in-signature.stderr
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types | ||
| --> $DIR/in-signature.rs:7:21 | ||
| | | ||
| LL | fn arr_fn() -> [u8; _] { | ||
| | -----^- | ||
| | | | | ||
| | | not allowed in type signatures | ||
| | help: replace with the correct return type: `[u8; 3]` | ||
|
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types | ||
| --> $DIR/in-signature.rs:12:24 | ||
| | | ||
| LL | fn ty_fn() -> Bar<i32, _> { | ||
| | ---------^- | ||
| | | | | ||
| | | not allowed in type signatures | ||
| | help: replace with the correct return type: `Bar<i32, 3_usize>` | ||
|
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for return types | ||
| --> $DIR/in-signature.rs:17:25 | ||
| | | ||
| LL | fn ty_fn_mixed() -> Bar<_, _> { | ||
| | ----^--^- | ||
| | | | | | ||
| | | | not allowed in type signatures | ||
| | | not allowed in type signatures | ||
| | help: replace with the correct return type: `Bar<i32, 3_usize>` | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:22:15 | ||
| | | ||
| LL | const ARR_CT: [u8; _] = [0; 3]; | ||
| | ^^^^^^^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables | ||
| --> $DIR/in-signature.rs:24:20 | ||
| | | ||
| LL | static ARR_STATIC: [u8; _] = [0; 3]; | ||
| | ^^^^^^^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:26:14 | ||
| | | ||
| LL | const TY_CT: Bar<i32, _> = Bar::<i32, 3>(0); | ||
| | ^^^^^^^^^^^ | ||
| | | | ||
| | not allowed in type signatures | ||
| | help: replace with the correct type: `Bar<i32, 3_usize>` | ||
|
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables | ||
| --> $DIR/in-signature.rs:28:19 | ||
| | | ||
| LL | static TY_STATIC: Bar<i32, _> = Bar::<i32, 3>(0); | ||
| | ^^^^^^^^^^^ | ||
| | | | ||
| | not allowed in type signatures | ||
| | help: replace with the correct type: `Bar<i32, 3_usize>` | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:30:20 | ||
| | | ||
| LL | const TY_CT_MIXED: Bar<_, _> = Bar::<i32, 3>(0); | ||
| | ^^^^^^^^^ | ||
| | | | ||
| | not allowed in type signatures | ||
| | help: replace with the correct type: `Bar<i32, 3_usize>` | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for static variables | ||
| --> $DIR/in-signature.rs:32:25 | ||
| | | ||
| LL | static TY_STATIC_MIXED: Bar<_, _> = Bar::<i32, 3>(0); | ||
| | ^^^^^^^^^ | ||
| | | | ||
| | not allowed in type signatures | ||
| | help: replace with the correct type: `Bar<i32, 3_usize>` | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:35:21 | ||
| | | ||
| LL | const ARR: [u8; _]; | ||
| | ^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:39:25 | ||
| | | ||
| LL | const ARR: Bar<i32, _>; | ||
| | ^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for constants | ||
| --> $DIR/in-signature.rs:43:20 | ||
| | | ||
| LL | const ARR: Bar<_, _>; | ||
| | ^ ^ not allowed in type signatures | ||
| | | | ||
| | not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types | ||
| --> $DIR/in-signature.rs:51:23 | ||
| | | ||
| LL | type Assoc = [u8; _]; | ||
| | ^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types | ||
| --> $DIR/in-signature.rs:55:27 | ||
| | | ||
| LL | type Assoc = Bar<i32, _>; | ||
| | ^ not allowed in type signatures | ||
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| error[E0121]: the placeholder `_` is not allowed within types on item signatures for associated types | ||
| --> $DIR/in-signature.rs:59:22 | ||
| | | ||
| LL | type Assoc = Bar<_, _>; | ||
| | ^ ^ not allowed in type signatures | ||
| | | | ||
| | not allowed in type signatures | ||
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| error: aborting due to 15 previous errors | ||
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| For more information about this error, try `rustc --explain E0121`. |
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