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c51f05be30
This centralizes the placeholder type error reporting in one location, but it also exposes the granularity at which we convert things from hir to ty more. E.g. previously infer types in where bounds were errored together with the function signature, but now they are independent.
63 lines
2.5 KiB
Rust
63 lines
2.5 KiB
Rust
#![crate_type = "rlib"]
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struct Foo<const N: usize>;
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struct Bar<T, const N: usize>(T);
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fn arr_fn() -> [u8; _] {
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
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[0; 3]
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}
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fn ty_fn() -> Bar<i32, _> {
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
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Bar::<i32, 3>(0)
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}
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fn ty_fn_mixed() -> Bar<_, _> {
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for return types
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Bar::<i32, 3>(0)
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}
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const ARR_CT: [u8; _] = [0; 3];
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
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static ARR_STATIC: [u8; _] = [0; 3];
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables
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const TY_CT: Bar<i32, _> = Bar::<i32, 3>(0);
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
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static TY_STATIC: Bar<i32, _> = Bar::<i32, 3>(0);
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables
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const TY_CT_MIXED: Bar<_, _> = Bar::<i32, 3>(0);
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for constants
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static TY_STATIC_MIXED: Bar<_, _> = Bar::<i32, 3>(0);
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for static variables
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trait ArrAssocConst {
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const ARR: [u8; _];
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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}
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trait TyAssocConst {
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const ARR: Bar<i32, _>;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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}
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trait TyAssocConstMixed {
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const ARR: Bar<_, _>;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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//~| ERROR the placeholder `_` is not allowed within types on item signatures for associated constants
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}
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trait AssocTy {
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type Assoc;
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}
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impl AssocTy for i8 {
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type Assoc = [u8; _];
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types
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}
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impl AssocTy for i16 {
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type Assoc = Bar<i32, _>;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types
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}
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impl AssocTy for i32 {
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type Assoc = Bar<_, _>;
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//~^ ERROR the placeholder `_` is not allowed within types on item signatures for associated types
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//~| ERROR the placeholder `_` is not allowed within types on item signatures for associated types
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}
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