mirror of
https://github.com/rust-lang/rust.git
synced 2025-05-14 02:49:40 +00:00
Account for bad placeholder types in where clauses
This commit is contained in:
Esteban Küber
parent
5ae85f43f4
commit
e75158d486
@ -20,7 +20,7 @@ use rustc_errors::{pluralize, struct_span_err, Applicability, DiagnosticId};
|
||||
use rustc_hir as hir;
|
||||
use rustc_hir::def::{CtorOf, DefKind, Namespace, Res};
|
||||
use rustc_hir::def_id::DefId;
|
||||
use rustc_hir::intravisit::Visitor;
|
||||
use rustc_hir::intravisit::{walk_generics, Visitor};
|
||||
use rustc_hir::print;
|
||||
use rustc_hir::{Constness, ExprKind, GenericArg, GenericArgs};
|
||||
use rustc_session::lint::builtin::{AMBIGUOUS_ASSOCIATED_ITEMS, LATE_BOUND_LIFETIME_ARGUMENTS};
|
||||
@ -838,18 +838,6 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
}
|
||||
},
|
||||
);
|
||||
if !inferred_params.is_empty() {
|
||||
// We always collect the spans for placeholder types when evaluating `fn`s, but we
|
||||
// only want to emit an error complaining about them if infer types (`_`) are not
|
||||
// allowed. `allow_ty_infer` gates this behavior.
|
||||
crate::collect::placeholder_type_error(
|
||||
tcx,
|
||||
inferred_params[0],
|
||||
&[],
|
||||
inferred_params,
|
||||
false,
|
||||
);
|
||||
}
|
||||
|
||||
self.complain_about_missing_type_params(
|
||||
missing_type_params,
|
||||
@ -2739,7 +2727,13 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
}
|
||||
hir::TyKind::BareFn(ref bf) => {
|
||||
require_c_abi_if_c_variadic(tcx, &bf.decl, bf.abi, ast_ty.span);
|
||||
tcx.mk_fn_ptr(self.ty_of_fn(bf.unsafety, bf.abi, &bf.decl, &[], None))
|
||||
tcx.mk_fn_ptr(self.ty_of_fn(
|
||||
bf.unsafety,
|
||||
bf.abi,
|
||||
&bf.decl,
|
||||
&hir::Generics::empty(),
|
||||
None,
|
||||
))
|
||||
}
|
||||
hir::TyKind::TraitObject(ref bounds, ref lifetime) => {
|
||||
self.conv_object_ty_poly_trait_ref(ast_ty.span, bounds, lifetime)
|
||||
@ -2922,7 +2916,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
unsafety: hir::Unsafety,
|
||||
abi: abi::Abi,
|
||||
decl: &hir::FnDecl<'_>,
|
||||
generic_params: &[hir::GenericParam<'_>],
|
||||
generics: &hir::Generics<'_>,
|
||||
ident_span: Option<Span>,
|
||||
) -> ty::PolyFnSig<'tcx> {
|
||||
debug!("ty_of_fn");
|
||||
@ -2934,6 +2928,8 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
for ty in decl.inputs {
|
||||
visitor.visit_ty(ty);
|
||||
}
|
||||
walk_generics(&mut visitor, generics);
|
||||
|
||||
let input_tys = decl.inputs.iter().map(|a| self.ty_of_arg(a, None));
|
||||
let output_ty = match decl.output {
|
||||
hir::FnRetTy::Return(ref output) => {
|
||||
@ -2955,7 +2951,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
crate::collect::placeholder_type_error(
|
||||
tcx,
|
||||
ident_span.map(|sp| sp.shrink_to_hi()).unwrap_or(DUMMY_SP),
|
||||
generic_params,
|
||||
&generics.params[..],
|
||||
visitor.0,
|
||||
ident_span.is_some(),
|
||||
);
|
||||
@ -2981,8 +2977,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
tcx.sess,
|
||||
decl.output.span(),
|
||||
E0581,
|
||||
"return type references {} \
|
||||
which is not constrained by the fn input types",
|
||||
"return type references {} which is not constrained by the fn input types",
|
||||
lifetime_name
|
||||
);
|
||||
if let ty::BrAnon(_) = *br {
|
||||
@ -2993,8 +2988,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
|
||||
// though we can easily give a hint that ought to be
|
||||
// relevant.
|
||||
err.note(
|
||||
"lifetimes appearing in an associated type \
|
||||
are not considered constrained",
|
||||
"lifetimes appearing in an associated type are not considered constrained",
|
||||
);
|
||||
}
|
||||
err.emit();
|
||||
|
||||
@ -1003,7 +1003,14 @@ fn typeck_tables_of_with_fallback<'tcx>(
|
||||
let fcx = if let (Some(header), Some(decl)) = (fn_header, fn_decl) {
|
||||
let fn_sig = if crate::collect::get_infer_ret_ty(&decl.output).is_some() {
|
||||
let fcx = FnCtxt::new(&inh, param_env, body.value.hir_id);
|
||||
AstConv::ty_of_fn(&fcx, header.unsafety, header.abi, decl, &[], None)
|
||||
AstConv::ty_of_fn(
|
||||
&fcx,
|
||||
header.unsafety,
|
||||
header.abi,
|
||||
decl,
|
||||
&hir::Generics::empty(),
|
||||
None,
|
||||
)
|
||||
} else {
|
||||
tcx.fn_sig(def_id)
|
||||
};
|
||||
|
||||
@ -1502,7 +1502,7 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: DefId) -> ty::PolyFnSig<'_> {
|
||||
sig.header.unsafety,
|
||||
sig.header.abi,
|
||||
&sig.decl,
|
||||
&generics.params[..],
|
||||
&generics,
|
||||
Some(ident.span),
|
||||
),
|
||||
}
|
||||
@ -1513,14 +1513,9 @@ fn fn_sig(tcx: TyCtxt<'_>, def_id: DefId) -> ty::PolyFnSig<'_> {
|
||||
ident,
|
||||
generics,
|
||||
..
|
||||
}) => AstConv::ty_of_fn(
|
||||
&icx,
|
||||
header.unsafety,
|
||||
header.abi,
|
||||
decl,
|
||||
&generics.params[..],
|
||||
Some(ident.span),
|
||||
),
|
||||
}) => {
|
||||
AstConv::ty_of_fn(&icx, header.unsafety, header.abi, decl, &generics, Some(ident.span))
|
||||
}
|
||||
|
||||
ForeignItem(&hir::ForeignItem { kind: ForeignItemKind::Fn(ref fn_decl, _, _), .. }) => {
|
||||
let abi = tcx.hir().get_foreign_abi(hir_id);
|
||||
@ -2142,7 +2137,14 @@ fn compute_sig_of_foreign_fn_decl<'tcx>(
|
||||
} else {
|
||||
hir::Unsafety::Unsafe
|
||||
};
|
||||
let fty = AstConv::ty_of_fn(&ItemCtxt::new(tcx, def_id), unsafety, abi, decl, &[], None);
|
||||
let fty = AstConv::ty_of_fn(
|
||||
&ItemCtxt::new(tcx, def_id),
|
||||
unsafety,
|
||||
abi,
|
||||
decl,
|
||||
&hir::Generics::empty(),
|
||||
None,
|
||||
);
|
||||
|
||||
// Feature gate SIMD types in FFI, since I am not sure that the
|
||||
// ABIs are handled at all correctly. -huonw
|
||||
|
||||
@ -49,4 +49,36 @@ trait K<A, B> {}
|
||||
fn foo<X: K<_, _>>(x: X) {}
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
|
||||
fn bar<F>(_: F) where F: Fn() -> _ {}
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
|
||||
fn baz<F: Fn() -> _>(_: F) {}
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
|
||||
struct L<F>(F) where F: Fn() -> _;
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
struct M<F> where F: Fn() -> _ {
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
a: F,
|
||||
}
|
||||
enum N<F> where F: Fn() -> _ {
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
Foo(F),
|
||||
}
|
||||
|
||||
union O<F> where F: Fn() -> _ {
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR unions with non-`Copy` fields are unstable
|
||||
foo: F,
|
||||
}
|
||||
|
||||
trait P<F> where F: Fn() -> _ {
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
}
|
||||
|
||||
trait Q {
|
||||
fn foo<F>(_: F) where F: Fn() -> _ {}
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -57,6 +57,19 @@ LL | type J = ty!(u8);
|
||||
|
|
||||
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
|
||||
|
||||
error[E0658]: unions with non-`Copy` fields are unstable
|
||||
--> $DIR/bad-assoc-ty.rs:69:1
|
||||
|
|
||||
LL | / union O<F> where F: Fn() -> _ {
|
||||
LL | |
|
||||
LL | |
|
||||
LL | | foo: F,
|
||||
LL | | }
|
||||
| |_^
|
||||
|
|
||||
= note: see issue #55149 <https://github.com/rust-lang/rust/issues/55149> for more information
|
||||
= help: add `#![feature(untagged_unions)]` to the crate attributes to enable
|
||||
|
||||
error[E0223]: ambiguous associated type
|
||||
--> $DIR/bad-assoc-ty.rs:1:10
|
||||
|
|
||||
@ -129,8 +142,101 @@ LL | fn foo<X: K<_, _>>(x: X) {}
|
||||
| ^ ^ not allowed in type signatures
|
||||
| |
|
||||
| not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | fn foo<X, T: K<T, T>>(x: X) {}
|
||||
| ^^^ ^ ^
|
||||
|
||||
error: aborting due to 20 previous errors
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:52:34
|
||||
|
|
||||
LL | fn bar<F>(_: F) where F: Fn() -> _ {}
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | fn bar<F, T>(_: F) where F: Fn() -> T {}
|
||||
| ^^^ ^
|
||||
|
||||
Some errors have detailed explanations: E0121, E0223.
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:55:19
|
||||
|
|
||||
LL | fn baz<F: Fn() -> _>(_: F) {}
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | fn baz<F, T: Fn() -> T>(_: F) {}
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:58:33
|
||||
|
|
||||
LL | struct L<F>(F) where F: Fn() -> _;
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | struct L<F, T>(F) where F: Fn() -> T;
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:60:30
|
||||
|
|
||||
LL | struct M<F> where F: Fn() -> _ {
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | struct M<F, T> where F: Fn() -> T {
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:64:28
|
||||
|
|
||||
LL | enum N<F> where F: Fn() -> _ {
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | enum N<F, T> where F: Fn() -> T {
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:69:29
|
||||
|
|
||||
LL | union O<F> where F: Fn() -> _ {
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | union O<F, T> where F: Fn() -> T {
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:75:29
|
||||
|
|
||||
LL | trait P<F> where F: Fn() -> _ {
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | trait P<F, T> where F: Fn() -> T {
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/bad-assoc-ty.rs:80:38
|
||||
|
|
||||
LL | fn foo<F>(_: F) where F: Fn() -> _ {}
|
||||
| ^ not allowed in type signatures
|
||||
|
|
||||
help: use type parameters instead
|
||||
|
|
||||
LL | fn foo<F, T>(_: F) where F: Fn() -> T {}
|
||||
| ^^^ ^
|
||||
|
||||
error: aborting due to 29 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0121, E0223, E0658.
|
||||
For more information about an error, try `rustc --explain E0121`.
|
||||
|
||||
@ -158,12 +158,9 @@ trait BadTrait<_> {}
|
||||
//~^ ERROR expected identifier, found reserved identifier `_`
|
||||
impl BadTrait<_> for BadStruct<_> {}
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
|
||||
fn impl_trait() -> impl BadTrait<_> {
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
unimplemented!()
|
||||
}
|
||||
|
||||
@ -178,14 +175,12 @@ struct BadStruct2<_, T>(_, T);
|
||||
|
||||
type X = Box<_>;
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
|
||||
struct Struct;
|
||||
trait Trait<T> {}
|
||||
impl Trait<usize> for Struct {}
|
||||
type Y = impl Trait<_>;
|
||||
//~^ ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
//~| ERROR the type placeholder `_` is not allowed within types on item signatures
|
||||
fn foo() -> Y {
|
||||
Struct
|
||||
}
|
||||
|
||||
@ -11,25 +11,25 @@ LL | trait BadTrait<_> {}
|
||||
| ^ expected identifier, found reserved identifier
|
||||
|
||||
error: expected identifier, found reserved identifier `_`
|
||||
--> $DIR/typeck_type_placeholder_item.rs:170:19
|
||||
--> $DIR/typeck_type_placeholder_item.rs:167:19
|
||||
|
|
||||
LL | struct BadStruct1<_, _>(_);
|
||||
| ^ expected identifier, found reserved identifier
|
||||
|
||||
error: expected identifier, found reserved identifier `_`
|
||||
--> $DIR/typeck_type_placeholder_item.rs:170:22
|
||||
--> $DIR/typeck_type_placeholder_item.rs:167:22
|
||||
|
|
||||
LL | struct BadStruct1<_, _>(_);
|
||||
| ^ expected identifier, found reserved identifier
|
||||
|
||||
error: expected identifier, found reserved identifier `_`
|
||||
--> $DIR/typeck_type_placeholder_item.rs:175:19
|
||||
--> $DIR/typeck_type_placeholder_item.rs:172:19
|
||||
|
|
||||
LL | struct BadStruct2<_, T>(_, T);
|
||||
| ^ expected identifier, found reserved identifier
|
||||
|
||||
error: associated constant in `impl` without body
|
||||
--> $DIR/typeck_type_placeholder_item.rs:208:5
|
||||
--> $DIR/typeck_type_placeholder_item.rs:203:5
|
||||
|
|
||||
LL | const C: _;
|
||||
| ^^^^^^^^^^-
|
||||
@ -37,7 +37,7 @@ LL | const C: _;
|
||||
| help: provide a definition for the constant: `= <expr>;`
|
||||
|
||||
error[E0403]: the name `_` is already used for a generic parameter in this item's generic parameters
|
||||
--> $DIR/typeck_type_placeholder_item.rs:170:22
|
||||
--> $DIR/typeck_type_placeholder_item.rs:167:22
|
||||
|
|
||||
LL | struct BadStruct1<_, _>(_);
|
||||
| - ^ already used
|
||||
@ -351,18 +351,6 @@ help: use type parameters instead
|
||||
LL | struct BadStruct<T>(T);
|
||||
| ^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:159:32
|
||||
|
|
||||
LL | impl BadTrait<_> for BadStruct<_> {}
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:159:15
|
||||
|
|
||||
LL | impl BadTrait<_> for BadStruct<_> {}
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:159:15
|
||||
|
|
||||
@ -377,13 +365,13 @@ LL | impl<T> BadTrait<T> for BadStruct<T> {}
|
||||
| ^^^ ^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:164:34
|
||||
--> $DIR/typeck_type_placeholder_item.rs:162:34
|
||||
|
|
||||
LL | fn impl_trait() -> impl BadTrait<_> {
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:170:25
|
||||
--> $DIR/typeck_type_placeholder_item.rs:167:25
|
||||
|
|
||||
LL | struct BadStruct1<_, _>(_);
|
||||
| ^ not allowed in type signatures
|
||||
@ -394,7 +382,7 @@ LL | struct BadStruct1<T, _>(T);
|
||||
| ^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:175:25
|
||||
--> $DIR/typeck_type_placeholder_item.rs:172:25
|
||||
|
|
||||
LL | struct BadStruct2<_, T>(_, T);
|
||||
| ^ not allowed in type signatures
|
||||
@ -405,13 +393,7 @@ LL | struct BadStruct2<K, T>(K, T);
|
||||
| ^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:179:14
|
||||
|
|
||||
LL | type X = Box<_>;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:179:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:176:14
|
||||
|
|
||||
LL | type X = Box<_>;
|
||||
| ^ not allowed in type signatures
|
||||
@ -531,37 +513,25 @@ LL | fn clone_from<T>(&mut self, other: T) { *self = FnTest9; }
|
||||
| ^^^ ^
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:164:34
|
||||
|
|
||||
LL | fn impl_trait() -> impl BadTrait<_> {
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:186:21
|
||||
--> $DIR/typeck_type_placeholder_item.rs:182:21
|
||||
|
|
||||
LL | type Y = impl Trait<_>;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:186:21
|
||||
|
|
||||
LL | type Y = impl Trait<_>;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:195:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:190:14
|
||||
|
|
||||
LL | type B = _;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:197:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:192:14
|
||||
|
|
||||
LL | const C: _;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:199:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:194:14
|
||||
|
|
||||
LL | const D: _ = 42;
|
||||
| ^
|
||||
@ -606,25 +576,25 @@ LL | fn clone(&self) -> _ { FnTest9 }
|
||||
| help: replace with the correct return type: `main::FnTest9`
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:204:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:199:14
|
||||
|
|
||||
LL | type A = _;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:206:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:201:14
|
||||
|
|
||||
LL | type B = _;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:208:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:203:14
|
||||
|
|
||||
LL | const C: _;
|
||||
| ^ not allowed in type signatures
|
||||
|
||||
error[E0121]: the type placeholder `_` is not allowed within types on item signatures
|
||||
--> $DIR/typeck_type_placeholder_item.rs:211:14
|
||||
--> $DIR/typeck_type_placeholder_item.rs:206:14
|
||||
|
|
||||
LL | const D: _ = 42;
|
||||
| ^
|
||||
@ -632,7 +602,7 @@ LL | const D: _ = 42;
|
||||
| not allowed in type signatures
|
||||
| help: replace `_` with the correct type: `i32`
|
||||
|
||||
error: aborting due to 71 previous errors
|
||||
error: aborting due to 66 previous errors
|
||||
|
||||
Some errors have detailed explanations: E0121, E0282, E0403.
|
||||
For more information about an error, try `rustc --explain E0121`.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user