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Tweak errors for missing associated types and type parameters

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This commit is contained in:
Esteban Küber 2019-12-12 14:48:46 -08:00
parent c5a2a9a99c
commit 547abe0c52
37 changed files with 611 additions and 299 deletions
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250
src/librustc_typeck/astconv.rs
View file

@ -473,7 +473,7 @@ pub fn create_substs_for_generic_args<'b>(
self_ty: Option<Ty<'tcx>>,
args_for_def_id: impl Fn(DefId) -> (Option<&'b GenericArgs>, bool),
provided_kind: impl Fn(&GenericParamDef, &GenericArg) -> subst::GenericArg<'tcx>,
inferred_kind: impl Fn(
mut inferred_kind: impl FnMut(
Option<&[subst::GenericArg<'tcx>]>,
&GenericParamDef,
bool,
@ -674,6 +674,7 @@ fn create_substs_for_ast_path<'a>(
false
};
let mut missing_type_params = vec![];
let substs = Self::create_substs_for_generic_args(
tcx,
def_id,
@ -709,19 +710,7 @@ fn create_substs_for_ast_path<'a>(
// defaults. This will lead to an ICE if we are not
// careful!
if default_needs_object_self(param) {
struct_span_err!(
tcx.sess,
span,
E0393,
"the type parameter `{}` must be explicitly specified",
param.name
)
.span_label(span, format!("missing reference to `{}`", param.name))
.note(&format!(
"because of the default `Self` reference, type parameters \
must be specified on object types"
))
.emit();
missing_type_params.push(param.name.to_string());
tcx.types.err.into()
} else {
// This is a default type parameter.
@ -759,6 +748,70 @@ fn create_substs_for_ast_path<'a>(
}
},
);
if !missing_type_params.is_empty() {
let display = missing_type_params
.iter()
.map(|n| format!("`{}`", n))
.collect::<Vec<_>>()
.join(", ");
let mut err = struct_span_err!(
tcx.sess,
span,
E0393,
"the type parameter{} {} must be explicitly specified",
pluralize!(missing_type_params.len()),
display,
);
err.span_label(
self.tcx().def_span(def_id),
&format!(
"type parameter{} {} must be specified for this",
pluralize!(missing_type_params.len()),
display,
),
);
let mut suggested = false;
if let (Ok(snippet), true) = (
tcx.sess.source_map().span_to_snippet(span),
// Don't suggest setting the type params if there are some already: the order is
// tricky to get right and the user will already know what the syntax is.
generic_args.args.is_empty(),
) {
if snippet.ends_with('>') {
// The user wrote `Trait<'a, T>` or similar. To provide an accurate suggestion
// we would have to preserve the right order. For now, as clearly the user is
// aware of the syntax, we do nothing.
} else {
// The user wrote `Iterator`, so we don't have a type we can suggest, but at
// least we can clue them to the correct syntax `Iterator<Type>`.
err.span_suggestion(
span,
&format!(
"set the type parameter{plural} to the desired type{plural}",
plural = pluralize!(missing_type_params.len()),
),
format!("{}<{}>", snippet, missing_type_params.join(", ")),
Applicability::HasPlaceholders,
);
suggested = true;
}
}
if !suggested {
err.span_label(
span,
format!(
"missing reference{} to {}",
pluralize!(missing_type_params.len()),
display,
),
);
}
err.note(&format!(
"because of the default `Self` reference, type parameters must be \
specified on object types"
));
err.emit();
}
// Convert associated-type bindings or constraints into a separate vector.
// Example: Given this:
@ -854,8 +907,18 @@ pub(super) fn instantiate_poly_trait_ref_inner(
self.prohibit_generics(trait_ref.path.segments.split_last().unwrap().1);
let path_span = if trait_ref.path.segments.len() == 1 {
// FIXME: `trait_ref.path.span` can point to a full path with multiple
// segments, even though `trait_ref.path.segments` is of length `1`. Work
// around that bug here, even though it should be fixed elsewhere.
// This would otherwise cause an invalid suggestion. For an example, look at
// `src/test/ui/issues/issue-28344.rs`.
trait_ref.path.segments[0].ident.span
} else {
trait_ref.path.span
};
let (substs, assoc_bindings, potential_assoc_types) = self.create_substs_for_ast_trait_ref(
trait_ref.path.span,
path_span,
trait_def_id,
self_ty,
trait_ref.path.segments.last().unwrap(),
@ -947,13 +1010,21 @@ fn create_substs_for_ast_trait_ref<'a>(
&& trait_segment.generic_args().parenthesized != trait_def.paren_sugar
{
// For now, require that parenthetical notation be used only with `Fn()` etc.
let msg = if trait_def.paren_sugar {
"the precise format of `Fn`-family traits' type parameters is subject to change. \
Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead"
let (msg, help) = if trait_def.paren_sugar {
(
"the precise format of `Fn`-family traits' type parameters is subject to \
change",
Some("use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`"),
)
} else {
"parenthetical notation is only stable when used with `Fn`-family traits"
("parenthetical notation is only stable when used with `Fn`-family traits", None)
};
feature_err(&self.tcx().sess.parse_sess, sym::unboxed_closures, span, msg).emit();
let sess = &self.tcx().sess.parse_sess;
let mut err = feature_err(sess, sym::unboxed_closures, span, msg);
if let Some(help) = help {
err.help(help);
}
err.emit();
}
self.create_substs_for_ast_path(
@ -1213,8 +1284,8 @@ fn add_predicates_for_ast_type_binding(
self.tcx().sess,
binding.span,
E0719,
"the value of the associated type `{}` (from the trait `{}`) \
is already specified",
"the value of the associated type `{}` (from trait `{}`) \
is already specified",
binding.item_name,
tcx.def_path_str(assoc_ty.container.id())
)
@ -1378,65 +1449,123 @@ fn conv_object_ty_poly_trait_ref(
}
if !associated_types.is_empty() {
// Account for things like `dyn Foo + 'a` by pointing at the `TraitRef.path`
// `Span` instead of the `PolyTraitRef` `Span`. That way the suggestion will
// be valid, otherwise we would suggest `dyn Foo + 'a<A = Type>`. See tests
// `issue-22434.rs` and `issue-22560.rs` for examples.
let sugg_span = if potential_assoc_types.is_empty() && trait_bounds.len() == 1 {
if trait_bounds[0].trait_ref.path.segments.len() == 1
&& trait_bounds[0].trait_ref.path.segments[0].args.is_none()
{
// FIXME: `trait_ref.path.span` can point to a full path with multiple
// segments, even though `trait_ref.path.segments` is of length `1`. Work
// around that bug here, even though it should be fixed elsewhere.
// This would otherwise cause an invalid suggestion. For an example, look at
// `src/test/ui/issues/issue-28344.rs`.
trait_bounds[0].trait_ref.path.segments[0].ident.span
} else {
trait_bounds[0].trait_ref.path.span
}
} else {
span
};
let names = associated_types
.iter()
.map(|item_def_id| {
let assoc_item = tcx.associated_item(*item_def_id);
let trait_def_id = assoc_item.container.id();
format!(
"`{}` (from the trait `{}`)",
"`{}` (from trait `{}`)",
assoc_item.ident,
tcx.def_path_str(trait_def_id),
tcx.def_path_str(trait_def_id)
)
})
.collect::<Vec<_>>()
.join(", ");
let mut err = struct_span_err!(
tcx.sess,
span,
sugg_span,
E0191,
"the value of the associated type{} {} must be specified",
pluralize!(associated_types.len()),
names,
);
let (suggest, potential_assoc_types_spans) =
let mut suggestions = Vec::new();
let mut applicability = Applicability::MaybeIncorrect;
for (i, item_def_id) in associated_types.iter().enumerate() {
let assoc_item = tcx.associated_item(*item_def_id);
if let Some(sp) = tcx.hir().span_if_local(*item_def_id) {
err.span_label(sp, format!("`{}` defined here", assoc_item.ident));
}
if potential_assoc_types.len() == associated_types.len() {
// Only suggest when the amount of missing associated types equals the number of
// extra type arguments present, as that gives us a relatively high confidence
// that the user forgot to give the associtated type's name. The canonical
// example would be trying to use `Iterator<isize>` instead of
// `Iterator<Item = isize>`.
(true, potential_assoc_types)
} else {
(false, Vec::new())
};
let mut suggestions = Vec::new();
for (i, item_def_id) in associated_types.iter().enumerate() {
let assoc_item = tcx.associated_item(*item_def_id);
err.span_label(
span,
format!("associated type `{}` must be specified", assoc_item.ident),
);
if let Some(sp) = tcx.hir().span_if_local(*item_def_id) {
err.span_label(sp, format!("`{}` defined here", assoc_item.ident));
}
if suggest {
if let Ok(snippet) =
tcx.sess.source_map().span_to_snippet(potential_assoc_types_spans[i])
tcx.sess.source_map().span_to_snippet(potential_assoc_types[i])
{
suggestions.push((
potential_assoc_types_spans[i],
potential_assoc_types[i],
format!("{} = {}", assoc_item.ident, snippet),
));
}
}
}
if !suggestions.is_empty() {
let msg = format!(
"if you meant to specify the associated {}, write",
if suggestions.len() == 1 { "type" } else { "types" }
let mut suggestions_len = suggestions.len();
if let Ok(snippet) = tcx.sess.source_map().span_to_snippet(sugg_span) {
if potential_assoc_types.is_empty() && trait_bounds.len() == 1 &&
// Do not attempt to suggest when we don't know which path segment needs the
// type parameter set.
trait_bounds[0].trait_ref.path.segments.len() == 1
{
debug!("path segments {:?}", trait_bounds[0].trait_ref.path.segments);
applicability = Applicability::HasPlaceholders;
let assoc_types: Vec<String> = associated_types
.iter()
.map(|item_def_id| {
let assoc_item = tcx.associated_item(*item_def_id);
format!("{} = Type", assoc_item.ident)
})
.collect();
let sugg = assoc_types.join(", ");
if snippet.ends_with('>') {
// The user wrote `Trait<'a>` or similar and we don't have a type we can
// suggest, but at least we can clue them to the correct syntax
// `Trait<'a, Item = Type>` while accounting for the `<'a>` in the
// suggestion.
suggestions.push((
sugg_span,
format!("{}, {}>", &snippet[..snippet.len() - 1], sugg,),
));
} else {
// The user wrote `Iterator`, so we don't have a type we can suggest, but at
// least we can clue them to the correct syntax `Iterator<Item = Type>`.
suggestions.push((sugg_span, format!("{}<{}>", snippet, sugg)));
}
suggestions_len = assoc_types.len();
}
}
if suggestions.len() != 1 {
// We don't need this label if there's an inline suggestion, show otherwise.
let names = associated_types
.iter()
.map(|t| format!("`{}`", tcx.associated_item(*t).ident))
.collect::<Vec<_>>()
.join(", ");
err.span_label(
span,
format!(
"associated type{} {} must be specified",
pluralize!(associated_types.len()),
names,
),
);
err.multipart_suggestion(&msg, suggestions, Applicability::MaybeIncorrect);
}
if !suggestions.is_empty() {
let msg = format!("specify the associated type{}", pluralize!(suggestions_len));
err.multipart_suggestion(&msg, suggestions, applicability);
}
err.emit();
}
@ -1645,23 +1774,32 @@ fn one_bound_for_assoc_type<I>(
})
.and_then(|item| self.tcx().hir().span_if_local(item.def_id));
if let Some(span) = bound_span {
if let Some(bound_span) = bound_span {
err.span_label(
span,
bound_span,
format!(
"ambiguous `{}` from `{}`",
assoc_name,
bound.print_only_trait_path()
bound.print_only_trait_path(),
),
);
} else {
span_note!(
&mut err,
err.span_suggestion(
span,
"use fully qualified syntax to disambiguate",
format!(
"<{} as {}>::{}",
ty_param_name,
bound.print_only_trait_path(),
assoc_name,
),
Applicability::MaybeIncorrect,
);
} else {
err.note(&format!(
"associated type `{}` could derive from `{}`",
ty_param_name,
bound.print_only_trait_path()
);
bound.print_only_trait_path(),
));
}
}
err.emit();

4
src/test/compile-fail/issue-23595-1.rs
View file

@ -1,12 +1,12 @@
#![feature(associated_type_defaults)]
use std::ops::{Index};
use std::ops::Index;
trait Hierarchy {
type Value;
type ChildKey;
type Children = dyn Index<Self::ChildKey, Output=dyn Hierarchy>;
//~^ ERROR: the value of the associated types `Value` (from the trait `Hierarchy`), `ChildKey`
//~^ ERROR: the value of the associated types `Value` (from trait `Hierarchy`), `ChildKey`
fn data(&self) -> Option<(Self::Value, Self::Children)>;
}

138
src/test/ui/associated-type-bounds/duplicate.rs
View file

@ -9,175 +9,175 @@
use std::iter;
struct SI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
struct SI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
struct SI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
struct SW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
struct SW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
struct SW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EI1<T: Iterator<Item: Copy, Item: Send>> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EI2<T: Iterator<Item: Copy, Item: Copy>> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EI3<T: Iterator<Item: 'static, Item: 'static>> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EW1<T> where T: Iterator<Item: Copy, Item: Send> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EW2<T> where T: Iterator<Item: Copy, Item: Copy> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
enum EW3<T> where T: Iterator<Item: 'static, Item: 'static> { V(T) }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
union UW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FI1<T: Iterator<Item: Copy, Item: Send>>() {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FI2<T: Iterator<Item: Copy, Item: Copy>>() {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FI3<T: Iterator<Item: 'static, Item: 'static>>() {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FW1<T>() where T: Iterator<Item: Copy, Item: Send> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FW2<T>() where T: Iterator<Item: Copy, Item: Copy> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FW3<T>() where T: Iterator<Item: 'static, Item: 'static> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { iter::empty() }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { iter::empty() }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { iter::empty() }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FAPIT1(_: impl Iterator<Item: Copy, Item: Send>) {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FAPIT2(_: impl Iterator<Item: Copy, Item: Copy>) {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn FAPIT3(_: impl Iterator<Item: 'static, Item: 'static>) {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
const CIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
const CIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
const CIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
static SIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
static SIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
static SIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn lit1() { let _: impl Iterator<Item: Copy, Item: Send> = iter::empty(); }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn lit2() { let _: impl Iterator<Item: Copy, Item: Copy> = iter::empty(); }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
fn lit3() { let _: impl Iterator<Item: 'static, Item: 'static> = iter::empty(); }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAI1<T: Iterator<Item: Copy, Item: Send>> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAI2<T: Iterator<Item: Copy, Item: Copy>> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAI3<T: Iterator<Item: 'static, Item: 'static>> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAW1<T> where T: Iterator<Item: Copy, Item: Send> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAW2<T> where T: Iterator<Item: Copy, Item: Copy> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TAW3<T> where T: Iterator<Item: 'static, Item: 'static> = T;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
trait TRI1<T: Iterator<Item: Copy, Item: Send>> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRI2<T: Iterator<Item: Copy, Item: Copy>> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRI3<T: Iterator<Item: 'static, Item: 'static>> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRS1: Iterator<Item: Copy, Item: Send> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRS2: Iterator<Item: Copy, Item: Copy> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRS3: Iterator<Item: 'static, Item: 'static> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRW1<T> where T: Iterator<Item: Copy, Item: Send> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRW2<T> where T: Iterator<Item: Copy, Item: Copy> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRW3<T> where T: Iterator<Item: 'static, Item: 'static> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRSW1 where Self: Iterator<Item: Copy, Item: Send> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRSW2 where Self: Iterator<Item: Copy, Item: Copy> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRSW3 where Self: Iterator<Item: 'static, Item: 'static> {}
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRA1 { type A: Iterator<Item: Copy, Item: Send>; }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRA2 { type A: Iterator<Item: Copy, Item: Copy>; }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
trait TRA3 { type A: Iterator<Item: 'static, Item: 'static>; }
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
type TADyn1 = dyn Iterator<Item: Copy, Item: Send>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type TADyn2 = Box<dyn Iterator<Item: Copy, Item: Copy>>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses
type TADyn3 = dyn Iterator<Item: 'static, Item: 'static>;
//~^ ERROR the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified [E0719]
//~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
//~| ERROR could not find defining uses
//~| ERROR could not find defining uses

138
src/test/ui/associated-type-bounds/duplicate.stderr
View file

@ -6,7 +6,7 @@ LL | #![feature(impl_trait_in_bindings)]
|
= note: `#[warn(incomplete_features)]` on by default
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:11:36
|
LL | struct SI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
@ -14,7 +14,7 @@ LL | struct SI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:13:36
|
LL | struct SI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
@ -22,7 +22,7 @@ LL | struct SI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:15:39
|
LL | struct SI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
@ -30,7 +30,7 @@ LL | struct SI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:17:45
|
LL | struct SW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
@ -38,7 +38,7 @@ LL | struct SW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:19:45
|
LL | struct SW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
@ -46,7 +46,7 @@ LL | struct SW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:21:48
|
LL | struct SW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
@ -54,7 +54,7 @@ LL | struct SW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:24:34
|
LL | enum EI1<T: Iterator<Item: Copy, Item: Send>> { V(T) }
@ -62,7 +62,7 @@ LL | enum EI1<T: Iterator<Item: Copy, Item: Send>> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:26:34
|
LL | enum EI2<T: Iterator<Item: Copy, Item: Copy>> { V(T) }
@ -70,7 +70,7 @@ LL | enum EI2<T: Iterator<Item: Copy, Item: Copy>> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:28:37
|
LL | enum EI3<T: Iterator<Item: 'static, Item: 'static>> { V(T) }
@ -78,7 +78,7 @@ LL | enum EI3<T: Iterator<Item: 'static, Item: 'static>> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:30:43
|
LL | enum EW1<T> where T: Iterator<Item: Copy, Item: Send> { V(T) }
@ -86,7 +86,7 @@ LL | enum EW1<T> where T: Iterator<Item: Copy, Item: Send> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:32:43
|
LL | enum EW2<T> where T: Iterator<Item: Copy, Item: Copy> { V(T) }
@ -94,7 +94,7 @@ LL | enum EW2<T> where T: Iterator<Item: Copy, Item: Copy> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:34:46
|
LL | enum EW3<T> where T: Iterator<Item: 'static, Item: 'static> { V(T) }
@ -102,7 +102,7 @@ LL | enum EW3<T> where T: Iterator<Item: 'static, Item: 'static> { V(T) }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:37:35
|
LL | union UI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
@ -110,7 +110,7 @@ LL | union UI1<T: Iterator<Item: Copy, Item: Send>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:39:35
|
LL | union UI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
@ -118,7 +118,7 @@ LL | union UI2<T: Iterator<Item: Copy, Item: Copy>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:41:38
|
LL | union UI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
@ -126,7 +126,7 @@ LL | union UI3<T: Iterator<Item: 'static, Item: 'static>> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:43:44
|
LL | union UW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
@ -134,7 +134,7 @@ LL | union UW1<T> where T: Iterator<Item: Copy, Item: Send> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:45:44
|
LL | union UW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
@ -142,7 +142,7 @@ LL | union UW2<T> where T: Iterator<Item: Copy, Item: Copy> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:47:47
|
LL | union UW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
@ -150,7 +150,7 @@ LL | union UW3<T> where T: Iterator<Item: 'static, Item: 'static> { f: T }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:50:32
|
LL | fn FI1<T: Iterator<Item: Copy, Item: Send>>() {}
@ -158,7 +158,7 @@ LL | fn FI1<T: Iterator<Item: Copy, Item: Send>>() {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:52:32
|
LL | fn FI2<T: Iterator<Item: Copy, Item: Copy>>() {}
@ -166,7 +166,7 @@ LL | fn FI2<T: Iterator<Item: Copy, Item: Copy>>() {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:54:35
|
LL | fn FI3<T: Iterator<Item: 'static, Item: 'static>>() {}
@ -174,7 +174,7 @@ LL | fn FI3<T: Iterator<Item: 'static, Item: 'static>>() {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:56:43
|
LL | fn FW1<T>() where T: Iterator<Item: Copy, Item: Send> {}
@ -182,7 +182,7 @@ LL | fn FW1<T>() where T: Iterator<Item: Copy, Item: Send> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:58:43
|
LL | fn FW2<T>() where T: Iterator<Item: Copy, Item: Copy> {}
@ -190,7 +190,7 @@ LL | fn FW2<T>() where T: Iterator<Item: Copy, Item: Copy> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:60:46
|
LL | fn FW3<T>() where T: Iterator<Item: 'static, Item: 'static> {}
@ -198,7 +198,7 @@ LL | fn FW3<T>() where T: Iterator<Item: 'static, Item: 'static> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:69:40
|
LL | fn FAPIT1(_: impl Iterator<Item: Copy, Item: Send>) {}
@ -206,7 +206,7 @@ LL | fn FAPIT1(_: impl Iterator<Item: Copy, Item: Send>) {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:71:40
|
LL | fn FAPIT2(_: impl Iterator<Item: Copy, Item: Copy>) {}
@ -214,7 +214,7 @@ LL | fn FAPIT2(_: impl Iterator<Item: Copy, Item: Copy>) {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:73:43
|
LL | fn FAPIT3(_: impl Iterator<Item: 'static, Item: 'static>) {}
@ -222,7 +222,7 @@ LL | fn FAPIT3(_: impl Iterator<Item: 'static, Item: 'static>) {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:63:42
|
LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { iter::empty() }
@ -230,7 +230,7 @@ LL | fn FRPIT1() -> impl Iterator<Item: Copy, Item: Send> { iter::empty() }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:65:42
|
LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { iter::empty() }
@ -238,7 +238,7 @@ LL | fn FRPIT2() -> impl Iterator<Item: Copy, Item: Copy> { iter::empty() }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:67:45
|
LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { iter::empty() }
@ -246,7 +246,7 @@ LL | fn FRPIT3() -> impl Iterator<Item: 'static, Item: 'static> { iter::empty()
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:76:39
|
LL | const CIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
@ -254,7 +254,7 @@ LL | const CIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:78:39
|
LL | const CIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
@ -262,7 +262,7 @@ LL | const CIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:80:42
|
LL | const CIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
@ -270,7 +270,7 @@ LL | const CIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:82:40
|
LL | static SIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
@ -278,7 +278,7 @@ LL | static SIT1: impl Iterator<Item: Copy, Item: Send> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:84:40
|
LL | static SIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
@ -286,7 +286,7 @@ LL | static SIT2: impl Iterator<Item: Copy, Item: Copy> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:86:43
|
LL | static SIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
@ -294,7 +294,7 @@ LL | static SIT3: impl Iterator<Item: 'static, Item: 'static> = iter::empty();
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:89:46
|
LL | fn lit1() { let _: impl Iterator<Item: Copy, Item: Send> = iter::empty(); }
@ -302,7 +302,7 @@ LL | fn lit1() { let _: impl Iterator<Item: Copy, Item: Send> = iter::empty(); }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:91:46
|
LL | fn lit2() { let _: impl Iterator<Item: Copy, Item: Copy> = iter::empty(); }
@ -310,7 +310,7 @@ LL | fn lit2() { let _: impl Iterator<Item: Copy, Item: Copy> = iter::empty(); }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:93:49
|
LL | fn lit3() { let _: impl Iterator<Item: 'static, Item: 'static> = iter::empty(); }
@ -318,7 +318,7 @@ LL | fn lit3() { let _: impl Iterator<Item: 'static, Item: 'static> = iter::empt
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:96:35
|
LL | type TAI1<T: Iterator<Item: Copy, Item: Send>> = T;
@ -326,7 +326,7 @@ LL | type TAI1<T: Iterator<Item: Copy, Item: Send>> = T;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:98:35
|
LL | type TAI2<T: Iterator<Item: Copy, Item: Copy>> = T;
@ -334,7 +334,7 @@ LL | type TAI2<T: Iterator<Item: Copy, Item: Copy>> = T;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:100:38
|
LL | type TAI3<T: Iterator<Item: 'static, Item: 'static>> = T;
@ -342,7 +342,7 @@ LL | type TAI3<T: Iterator<Item: 'static, Item: 'static>> = T;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:102:44
|
LL | type TAW1<T> where T: Iterator<Item: Copy, Item: Send> = T;
@ -350,7 +350,7 @@ LL | type TAW1<T> where T: Iterator<Item: Copy, Item: Send> = T;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:104:44
|
LL | type TAW2<T> where T: Iterator<Item: Copy, Item: Copy> = T;
@ -358,7 +358,7 @@ LL | type TAW2<T> where T: Iterator<Item: Copy, Item: Copy> = T;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:106:47
|
LL | type TAW3<T> where T: Iterator<Item: 'static, Item: 'static> = T;
@ -372,7 +372,7 @@ error: could not find defining uses
LL | type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:109:36
|
LL | type ETAI1<T: Iterator<Item: Copy, Item: Send>> = impl Copy;
@ -386,7 +386,7 @@ error: could not find defining uses
LL | type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:114:36
|
LL | type ETAI2<T: Iterator<Item: Copy, Item: Copy>> = impl Copy;
@ -400,7 +400,7 @@ error: could not find defining uses
LL | type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:119:39
|
LL | type ETAI3<T: Iterator<Item: 'static, Item: 'static>> = impl Copy;
@ -414,7 +414,7 @@ error: could not find defining uses
LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:124:40
|
LL | type ETAI4 = impl Iterator<Item: Copy, Item: Send>;
@ -428,7 +428,7 @@ error: could not find defining uses
LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:129:40
|
LL | type ETAI5 = impl Iterator<Item: Copy, Item: Copy>;
@ -442,7 +442,7 @@ error: could not find defining uses
LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:134:43
|
LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
@ -450,7 +450,7 @@ LL | type ETAI6 = impl Iterator<Item: 'static, Item: 'static>;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:140:36
|
LL | trait TRI1<T: Iterator<Item: Copy, Item: Send>> {}
@ -458,7 +458,7 @@ LL | trait TRI1<T: Iterator<Item: Copy, Item: Send>> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:142:36
|
LL | trait TRI2<T: Iterator<Item: Copy, Item: Copy>> {}
@ -466,7 +466,7 @@ LL | trait TRI2<T: Iterator<Item: Copy, Item: Copy>> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:144:39
|
LL | trait TRI3<T: Iterator<Item: 'static, Item: 'static>> {}
@ -474,7 +474,7 @@ LL | trait TRI3<T: Iterator<Item: 'static, Item: 'static>> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:146:34
|
LL | trait TRS1: Iterator<Item: Copy, Item: Send> {}
@ -482,7 +482,7 @@ LL | trait TRS1: Iterator<Item: Copy, Item: Send> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:148:34
|
LL | trait TRS2: Iterator<Item: Copy, Item: Copy> {}
@ -490,7 +490,7 @@ LL | trait TRS2: Iterator<Item: Copy, Item: Copy> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:150:37
|
LL | trait TRS3: Iterator<Item: 'static, Item: 'static> {}
@ -498,7 +498,7 @@ LL | trait TRS3: Iterator<Item: 'static, Item: 'static> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:152:45
|
LL | trait TRW1<T> where T: Iterator<Item: Copy, Item: Send> {}
@ -506,7 +506,7 @@ LL | trait TRW1<T> where T: Iterator<Item: Copy, Item: Send> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:154:45
|
LL | trait TRW2<T> where T: Iterator<Item: Copy, Item: Copy> {}
@ -514,7 +514,7 @@ LL | trait TRW2<T> where T: Iterator<Item: Copy, Item: Copy> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:156:48
|
LL | trait TRW3<T> where T: Iterator<Item: 'static, Item: 'static> {}
@ -522,7 +522,7 @@ LL | trait TRW3<T> where T: Iterator<Item: 'static, Item: 'static> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:158:46
|
LL | trait TRSW1 where Self: Iterator<Item: Copy, Item: Send> {}
@ -530,7 +530,7 @@ LL | trait TRSW1 where Self: Iterator<Item: Copy, Item: Send> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:160:46
|
LL | trait TRSW2 where Self: Iterator<Item: Copy, Item: Copy> {}
@ -538,7 +538,7 @@ LL | trait TRSW2 where Self: Iterator<Item: Copy, Item: Copy> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:162:49
|
LL | trait TRSW3 where Self: Iterator<Item: 'static, Item: 'static> {}
@ -546,7 +546,7 @@ LL | trait TRSW3 where Self: Iterator<Item: 'static, Item: 'static> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:164:43
|
LL | trait TRA1 { type A: Iterator<Item: Copy, Item: Send>; }
@ -554,7 +554,7 @@ LL | trait TRA1 { type A: Iterator<Item: Copy, Item: Send>; }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:166:43
|
LL | trait TRA2 { type A: Iterator<Item: Copy, Item: Copy>; }
@ -562,7 +562,7 @@ LL | trait TRA2 { type A: Iterator<Item: Copy, Item: Copy>; }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:168:46
|
LL | trait TRA3 { type A: Iterator<Item: 'static, Item: 'static>; }
@ -570,7 +570,7 @@ LL | trait TRA3 { type A: Iterator<Item: 'static, Item: 'static>; }
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:171:40
|
LL | type TADyn1 = dyn Iterator<Item: Copy, Item: Send>;
@ -578,7 +578,7 @@ LL | type TADyn1 = dyn Iterator<Item: Copy, Item: Send>;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:175:44
|
LL | type TADyn2 = Box<dyn Iterator<Item: Copy, Item: Copy>>;
@ -586,7 +586,7 @@ LL | type TADyn2 = Box<dyn Iterator<Item: Copy, Item: Copy>>;
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/duplicate.rs:179:43
|
LL | type TADyn3 = dyn Iterator<Item: 'static, Item: 'static>;

54
src/test/ui/associated-type/associated-type-projection-ambig-between-bound-and-where-clause.stderr
View file

@ -9,6 +9,15 @@ LL | type Color;
...
LL | fn a<C:Vehicle+Box>(_: C::Color) {
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn a<C:Vehicle+Box>(_: <C as Box>::Color) {
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn a<C:Vehicle+Box>(_: <C as Vehicle>::Color) {
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `C`
--> $DIR/associated-type-projection-ambig-between-bound-and-where-clause.rs:20:12
@ -21,6 +30,15 @@ LL | type Color;
...
LL | fn b<C>(_: C::Color) where C : Vehicle+Box {
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn b<C>(_: <C as Box>::Color) where C : Vehicle+Box {
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn b<C>(_: <C as Vehicle>::Color) where C : Vehicle+Box {
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `C`
--> $DIR/associated-type-projection-ambig-between-bound-and-where-clause.rs:24:12
@ -33,6 +51,15 @@ LL | type Color;
...
LL | fn c<C>(_: C::Color) where C : Vehicle, C : Box {
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn c<C>(_: <C as Box>::Color) where C : Vehicle, C : Box {
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn c<C>(_: <C as Vehicle>::Color) where C : Vehicle, C : Box {
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `X`
--> $DIR/associated-type-projection-ambig-between-bound-and-where-clause.rs:35:20
@ -45,6 +72,15 @@ LL | type Color;
...
LL | fn e(&self, _: X::Color) where X : Box;
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn e(&self, _: <X as Box>::Color) where X : Box;
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn e(&self, _: <X as Vehicle>::Color) where X : Box;
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `X`
--> $DIR/associated-type-projection-ambig-between-bound-and-where-clause.rs:38:20
@ -57,6 +93,15 @@ LL | type Color;
...
LL | fn f(&self, _: X::Color) where X : Box { }
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn f(&self, _: <X as Box>::Color) where X : Box { }
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn f(&self, _: <X as Vehicle>::Color) where X : Box { }
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `X`
--> $DIR/associated-type-projection-ambig-between-bound-and-where-clause.rs:30:20
@ -69,6 +114,15 @@ LL | type Color;
...
LL | fn d(&self, _: X::Color) where X : Box { }
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn d(&self, _: <X as Box>::Color) where X : Box { }
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn d(&self, _: <X as Vehicle>::Color) where X : Box { }
| ^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 6 previous errors

15
src/test/ui/associated-type/associated-type-projection-from-multiple-supertraits.rs
View file

@ -20,13 +20,26 @@ fn dent<C:BoxCar>(c: C, color: C::Color) {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
}
// FIXME: add error code to detect this case and explain that you'll want the approach in
// `dent_object_3` of using a new type param and relying on the `where` clauses.
fn dent_object<COLOR>(c: dyn BoxCar<Color=COLOR>) {
//~^ ERROR ambiguous associated type
//~| ERROR the value of the associated type `Color` (from the trait `Vehicle`) must be specified
//~| ERROR the value of the associated type `Color` (from trait `Vehicle`) must be specified
}
fn paint<C:BoxCar>(c: C, d: C::Color) {
//~^ ERROR ambiguous associated type `Color` in bounds of `C`
}
fn dent_object_2<COLOR>(c: dyn BoxCar) where <dyn BoxCar as Vehicle>::Color = COLOR {
//~^ ERROR the value of the associated types `Color` (from trait `Vehicle`), `Color` (from
//~| ERROR equality constraints are not yet supported in where clauses
}
fn dent_object_3<X, COLOR>(c: X)
where X: BoxCar,
X: Vehicle<Color = COLOR>,
X: Box<Color = COLOR>
{} // OK!
pub fn main() { }

57
src/test/ui/associated-type/associated-type-projection-from-multiple-supertraits.stderr
View file

@ -1,3 +1,9 @@
error: equality constraints are not yet supported in where clauses (see #20041)
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:34:46
|
LL | fn dent_object_2<COLOR>(c: dyn BoxCar) where <dyn BoxCar as Vehicle>::Color = COLOR {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `C`
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:19:32
|
@ -9,9 +15,18 @@ LL | type Color;
...
LL | fn dent<C:BoxCar>(c: C, color: C::Color) {
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn dent<C:BoxCar>(c: C, color: <C as Box>::Color) {
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn dent<C:BoxCar>(c: C, color: <C as Vehicle>::Color) {
| ^^^^^^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Color` in bounds of `BoxCar`
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:23:37
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:25:37
|
LL | type Color;
| ----------- ambiguous `Color` from `Vehicle`
@ -21,18 +36,27 @@ LL | type Color;
...
LL | fn dent_object<COLOR>(c: dyn BoxCar<Color=COLOR>) {
| ^^^^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn dent_object<COLOR>(c: dyn BoxCar<<BoxCar as Box>::Color>) {
| ^^^^^^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn dent_object<COLOR>(c: dyn BoxCar<<BoxCar as Vehicle>::Color>) {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0191]: the value of the associated type `Color` (from the trait `Vehicle`) must be specified
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:23:26
error[E0191]: the value of the associated type `Color` (from trait `Vehicle`) must be specified
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:25:30
|
LL | type Color;
| ----------- `Color` defined here
...
LL | fn dent_object<COLOR>(c: dyn BoxCar<Color=COLOR>) {
| ^^^^^^^^^^^^^^^^^^^^^^^ associated type `Color` must be specified
| ^^^^^^^^^^^^^^^^^^^ help: specify the associated type: `BoxCar<Color=COLOR, Color = Type>`
error[E0221]: ambiguous associated type `Color` in bounds of `C`
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:28:29
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:30:29
|
LL | type Color;
| ----------- ambiguous `Color` from `Vehicle`
@ -42,8 +66,29 @@ LL | type Color;
...
LL | fn paint<C:BoxCar>(c: C, d: C::Color) {
| ^^^^^^^^ ambiguous associated type `Color`
|
help: use fully qualified syntax to disambiguate
|
LL | fn paint<C:BoxCar>(c: C, d: <C as Box>::Color) {
| ^^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | fn paint<C:BoxCar>(c: C, d: <C as Vehicle>::Color) {
| ^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 4 previous errors
error[E0191]: the value of the associated types `Color` (from trait `Vehicle`), `Color` (from trait `Box`) must be specified
--> $DIR/associated-type-projection-from-multiple-supertraits.rs:34:32
|
LL | type Color;
| ----------- `Color` defined here
...
LL | type Color;
| ----------- `Color` defined here
...
LL | fn dent_object_2<COLOR>(c: dyn BoxCar) where <dyn BoxCar as Vehicle>::Color = COLOR {
| ^^^^^^ help: specify the associated types: `BoxCar<Color = Type, Color = Type>`
error: aborting due to 6 previous errors
Some errors have detailed explanations: E0191, E0221.
For more information about an error, try `rustc --explain E0191`.

6
src/test/ui/associated-types/associated-types-incomplete-object.rs
View file

@ -21,11 +21,11 @@ pub fn main() {
let a = &42isize as &dyn Foo<A=usize, B=char>;
let b = &42isize as &dyn Foo<A=usize>;
//~^ ERROR the value of the associated type `B` (from the trait `Foo`) must be specified
//~^ ERROR the value of the associated type `B` (from trait `Foo`) must be specified
let c = &42isize as &dyn Foo<B=char>;
//~^ ERROR the value of the associated type `A` (from the trait `Foo`) must be specified
//~^ ERROR the value of the associated type `A` (from trait `Foo`) must be specified
let d = &42isize as &dyn Foo;
//~^ ERROR the value of the associated types `A` (from the trait `Foo`), `B` (from the trait
//~^ ERROR the value of the associated types `A` (from trait `Foo`), `B` (from trait
}

21
src/test/ui/associated-types/associated-types-incomplete-object.stderr
View file

@ -1,23 +1,23 @@
error[E0191]: the value of the associated type `B` (from the trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:23:26
error[E0191]: the value of the associated type `B` (from trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:23:30
|
LL | type B;
| ------- `B` defined here
...
LL | let b = &42isize as &dyn Foo<A=usize>;
| ^^^^^^^^^^^^^^^^ associated type `B` must be specified
| ^^^^^^^^^^^^ help: specify the associated type: `Foo<A=usize, B = Type>`
error[E0191]: the value of the associated type `A` (from the trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:26:26
error[E0191]: the value of the associated type `A` (from trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:26:30
|
LL | type A;
| ------- `A` defined here
...
LL | let c = &42isize as &dyn Foo<B=char>;
| ^^^^^^^^^^^^^^^ associated type `A` must be specified
| ^^^^^^^^^^^ help: specify the associated type: `Foo<B=char, A = Type>`
error[E0191]: the value of the associated types `A` (from the trait `Foo`), `B` (from the trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:29:26
error[E0191]: the value of the associated types `A` (from trait `Foo`), `B` (from trait `Foo`) must be specified
--> $DIR/associated-types-incomplete-object.rs:29:30
|
LL | type A;
| ------- `A` defined here
@ -25,10 +25,7 @@ LL | type B;
| ------- `B` defined here
...
LL | let d = &42isize as &dyn Foo;
| ^^^^^^^
| |
| associated type `A` must be specified
| associated type `B` must be specified
| ^^^ help: specify the associated types: `Foo<A = Type, B = Type>`
error: aborting due to 3 previous errors

9
src/test/ui/associated-types/associated-types-path-1.stderr
View file

@ -15,6 +15,15 @@ LL | type A;
...
LL | pub fn f2<T: Foo + Bar>(a: T, x: T::A) {}
| ^^^^ ambiguous associated type `A`
|
help: use fully qualified syntax to disambiguate
|
LL | pub fn f2<T: Foo + Bar>(a: T, x: <T as Bar>::A) {}
| ^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | pub fn f2<T: Foo + Bar>(a: T, x: <T as Foo>::A) {}
| ^^^^^^^^^^^^^
error: aborting due to 2 previous errors

6
src/test/ui/error-codes/E0191.stderr
View file

@ -1,11 +1,11 @@
error[E0191]: the value of the associated type `Bar` (from the trait `Trait`) must be specified
--> $DIR/E0191.rs:5:12
error[E0191]: the value of the associated type `Bar` (from trait `Trait`) must be specified
--> $DIR/E0191.rs:5:16
|
LL | type Bar;
| --------- `Bar` defined here
...
LL | type Foo = dyn Trait;
| ^^^^^^^^^ associated type `Bar` must be specified
| ^^^^^ help: specify the associated type: `Trait<Bar = Type>`
error: aborting due to previous error

6
src/test/ui/error-codes/E0220.stderr
View file

@ -4,14 +4,14 @@ error[E0220]: associated type `F` not found for `Trait`
LL | type Foo = dyn Trait<F=i32>;
| ^^^^^ associated type `F` not found
error[E0191]: the value of the associated type `Bar` (from the trait `Trait`) must be specified
--> $DIR/E0220.rs:5:12
error[E0191]: the value of the associated type `Bar` (from trait `Trait`) must be specified
--> $DIR/E0220.rs:5:16
|
LL | type Bar;
| --------- `Bar` defined here
...
LL | type Foo = dyn Trait<F=i32>;
| ^^^^^^^^^^^^^^^^ associated type `Bar` must be specified
| ^^^^^^^^^^^^ help: specify the associated type: `Trait<F=i32, Bar = Type>`
error: aborting due to 2 previous errors

20
src/test/ui/error-codes/E0221.stderr
View file

@ -9,6 +9,15 @@ LL | type A: T2;
LL | fn do_something() {
LL | let _: Self::A;
| ^^^^^^^ ambiguous associated type `A`
|
help: use fully qualified syntax to disambiguate
|
LL | let _: <Self as Foo>::A;
| ^^^^^^^^^^^^^^^^
help: use fully qualified syntax to disambiguate
|
LL | let _: <Self as Bar>::A;
| ^^^^^^^^^^^^^^^^
error[E0221]: ambiguous associated type `Err` in bounds of `Self`
--> $DIR/E0221.rs:21:16
@ -16,14 +25,13 @@ error[E0221]: ambiguous associated type `Err` in bounds of `Self`
LL | type Err: T3;
| ------------- ambiguous `Err` from `My`
LL | fn test() {
LL | let _: Self::Err;
| ^^^^^^^^^ ambiguous associated type `Err`
|
note: associated type `Self` could derive from `std::str::FromStr`
--> $DIR/E0221.rs:21:16
|
LL | let _: Self::Err;
| ^^^^^^^^^
| |
| ambiguous associated type `Err`
| help: use fully qualified syntax to disambiguate: `<Self as My>::Err`
|
= note: associated type `Self` could derive from `std::str::FromStr`
error: aborting due to 2 previous errors

5
src/test/ui/error-codes/E0393.stderr
View file

@ -1,8 +1,11 @@
error[E0393]: the type parameter `T` must be explicitly specified
--> $DIR/E0393.rs:3:47
|
LL | trait A<T=Self> {}
| ------------------ type parameter `T` must be specified for this
LL |
LL | fn together_we_will_rule_the_galaxy(son: &dyn A) {}
| ^ missing reference to `T`
| ^ help: set the type parameter to the desired type: `A<T>`
|
= note: because of the default `Self` reference, type parameters must be specified on object types

4
src/test/ui/error-codes/E0719.stderr
View file

@ -1,4 +1,4 @@
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/E0719.rs:1:33
|
LL | trait Foo: Iterator<Item = i32, Item = i32> {}
@ -6,7 +6,7 @@ LL | trait Foo: Iterator<Item = i32, Item = i32> {}
| |
| `Item` bound here first
error[E0719]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) is already specified
error[E0719]: the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified
--> $DIR/E0719.rs:6:42
|
LL | fn test() -> Box<dyn Iterator<Item = (), Item = Unit>> {

9
src/test/ui/feature-gates/feature-gate-unboxed-closures-manual-impls.stderr
View file

@ -34,7 +34,7 @@ LL | extern "rust-call" fn call_once(&self, args: ()) -> () {}
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/feature-gate-unboxed-closures-manual-impls.rs:9:6
|
LL | impl Fn<()> for Foo {
@ -42,6 +42,7 @@ LL | impl Fn<()> for Foo {
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error[E0229]: associated type bindings are not allowed here
--> $DIR/feature-gate-unboxed-closures-manual-impls.rs:15:6
@ -49,7 +50,7 @@ error[E0229]: associated type bindings are not allowed here
LL | impl FnOnce() for Foo1 {
| ^^^^^^^^ associated type not allowed here
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/feature-gate-unboxed-closures-manual-impls.rs:21:6
|
LL | impl FnMut<()> for Bar {
@ -57,8 +58,9 @@ LL | impl FnMut<()> for Bar {
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/feature-gate-unboxed-closures-manual-impls.rs:27:6
|
LL | impl FnOnce<()> for Baz {
@ -66,6 +68,7 @@ LL | impl FnOnce<()> for Baz {
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error: aborting due to 8 previous errors

3
src/test/ui/feature-gates/feature-gate-unboxed-closures.stderr
View file

@ -7,7 +7,7 @@ LL | extern "rust-call" fn call_once(self, (a, b): (u32, u32)) -> u32 {
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/feature-gate-unboxed-closures.rs:5:6
|
LL | impl FnOnce<(u32, u32)> for Test {
@ -15,6 +15,7 @@ LL | impl FnOnce<(u32, u32)> for Test {
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error: aborting due to 2 previous errors

2
src/test/ui/issues/issue-19482.rs
View file

@ -8,6 +8,6 @@ fn dummy(&self) { }
}
fn bar(x: &dyn Foo) {}
//~^ ERROR the associated type `A` (from the trait `Foo`) must be specified
//~^ ERROR the associated type `A` (from trait `Foo`) must be specified
pub fn main() {}

6
src/test/ui/issues/issue-19482.stderr
View file

@ -1,11 +1,11 @@
error[E0191]: the value of the associated type `A` (from the trait `Foo`) must be specified
--> $DIR/issue-19482.rs:10:12
error[E0191]: the value of the associated type `A` (from trait `Foo`) must be specified
--> $DIR/issue-19482.rs:10:16
|
LL | type A;
| ------- `A` defined here
...
LL | fn bar(x: &dyn Foo) {}
| ^^^^^^^ associated type `A` must be specified
| ^^^ help: specify the associated type: `Foo<A = Type>`
error: aborting due to previous error

21
src/test/ui/issues/issue-21950.stderr
View file

@ -1,16 +1,27 @@
error[E0393]: the type parameter `Rhs` must be explicitly specified
--> $DIR/issue-21950.rs:5:18
|
LL | &dyn Add;
| ^^^ missing reference to `Rhs`
LL | &dyn Add;
| ^^^ help: set the type parameter to the desired type: `Add<Rhs>`
|
::: $SRC_DIR/libcore/ops/arith.rs:LL:COL
|
LL | / pub trait Add<Rhs = Self> {
LL | | /// The resulting type after applying the `+` operator.
LL | | #[stable(feature = "rust1", since = "1.0.0")]
LL | | type Output;
... |
LL | | fn add(self, rhs: Rhs) -> Self::Output;
LL | | }
| |_- type parameter `Rhs` must be specified for this
|
= note: because of the default `Self` reference, type parameters must be specified on object types
error[E0191]: the value of the associated type `Output` (from the trait `std::ops::Add`) must be specified
--> $DIR/issue-21950.rs:5:14
error[E0191]: the value of the associated type `Output` (from trait `std::ops::Add`) must be specified
--> $DIR/issue-21950.rs:5:18
|
LL | &dyn Add;
| ^^^^^^^ associated type `Output` must be specified
| ^^^ help: specify the associated type: `Add<Output = Type>`
error: aborting due to 2 previous errors

5
src/test/ui/issues/issue-22370.stderr
View file

@ -1,8 +1,11 @@
error[E0393]: the type parameter `T` must be explicitly specified
--> $DIR/issue-22370.rs:3:14
|
LL | trait A<T=Self> {}
| ------------------ type parameter `T` must be specified for this
LL |
LL | fn f(a: &dyn A) {}
| ^ missing reference to `T`
| ^ help: set the type parameter to the desired type: `A<T>`
|
= note: because of the default `Self` reference, type parameters must be specified on object types

2
src/test/ui/issues/issue-22434.rs
View file

@ -3,6 +3,6 @@ pub trait Foo {
}
type I<'a> = &'a (dyn Foo + 'a);
//~^ ERROR the value of the associated type `A` (from the trait `Foo`) must be specified
//~^ ERROR the value of the associated type `A` (from trait `Foo`) must be specified
fn main() {}

6
src/test/ui/issues/issue-22434.stderr
View file

@ -1,11 +1,11 @@
error[E0191]: the value of the associated type `A` (from the trait `Foo`) must be specified
--> $DIR/issue-22434.rs:5:19
error[E0191]: the value of the associated type `A` (from trait `Foo`) must be specified
--> $DIR/issue-22434.rs:5:23
|
LL | type A;
| ------- `A` defined here
...
LL | type I<'a> = &'a (dyn Foo + 'a);
| ^^^^^^^^^^^^ associated type `A` must be specified
| ^^^ help: specify the associated type: `Foo<A = Type>`
error: aborting due to previous error

39
src/test/ui/issues/issue-22560.stderr
View file

@ -1,16 +1,38 @@
error[E0393]: the type parameter `Rhs` must be explicitly specified
--> $DIR/issue-22560.rs:6:13
|
LL | Sub;
| ^^^ missing reference to `Rhs`
LL | Sub;
| ^^^ help: set the type parameter to the desired type: `Sub<Rhs>`
|
::: $SRC_DIR/libcore/ops/arith.rs:LL:COL
|
LL | / pub trait Sub<Rhs = Self> {
LL | | /// The resulting type after applying the `-` operator.
LL | | #[stable(feature = "rust1", since = "1.0.0")]
LL | | type Output;
... |
LL | | fn sub(self, rhs: Rhs) -> Self::Output;
LL | | }
| |_- type parameter `Rhs` must be specified for this
|
= note: because of the default `Self` reference, type parameters must be specified on object types
error[E0393]: the type parameter `Rhs` must be explicitly specified
--> $DIR/issue-22560.rs:3:17
|
LL | type Test = dyn Add +
| ^^^ missing reference to `Rhs`
LL | type Test = dyn Add +
| ^^^ help: set the type parameter to the desired type: `Add<Rhs>`
|
::: $SRC_DIR/libcore/ops/arith.rs:LL:COL
|
LL | / pub trait Add<Rhs = Self> {
LL | | /// The resulting type after applying the `+` operator.
LL | | #[stable(feature = "rust1", since = "1.0.0")]
LL | | type Output;
... |
LL | | fn add(self, rhs: Rhs) -> Self::Output;
LL | | }
| |_- type parameter `Rhs` must be specified for this
|
= note: because of the default `Self` reference, type parameters must be specified on object types
@ -29,20 +51,15 @@ LL | Sub;
| additional non-auto trait
| trait alias used in trait object type (additional use)
error[E0191]: the value of the associated types `Output` (from the trait `std::ops::Add`), `Output` (from the trait `std::ops::Sub`) must be specified
error[E0191]: the value of the associated types `Output` (from trait `std::ops::Add`), `Output` (from trait `std::ops::Sub`) must be specified
--> $DIR/issue-22560.rs:3:13
|
LL | type Test = dyn Add +
| _____________^
| |_____________|
| |
LL | |
LL | |
LL | | Sub;
| | ^
| |_______________|
| |_______________associated type `Output` must be specified
| associated type `Output` must be specified
| |_______________^ associated types `Output`, `Output` must be specified
error: aborting due to 4 previous errors

2
src/test/ui/issues/issue-23024.rs
View file

@ -9,5 +9,5 @@ fn h(x:i32) -> i32 {3*x}
println!("{:?}",(vfnfer[0] as dyn Fn)(3));
//~^ ERROR the precise format of `Fn`-family traits'
//~| ERROR wrong number of type arguments: expected 1, found 0 [E0107]
//~| ERROR the value of the associated type `Output` (from the trait `std::ops::FnOnce`)
//~| ERROR the value of the associated type `Output` (from trait `std::ops::FnOnce`)
}

9
src/test/ui/issues/issue-23024.stderr
View file

@ -1,4 +1,4 @@
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/issue-23024.rs:9:39
|
LL | println!("{:?}",(vfnfer[0] as dyn Fn)(3));
@ -6,6 +6,7 @@ LL | println!("{:?}",(vfnfer[0] as dyn Fn)(3));
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error[E0107]: wrong number of type arguments: expected 1, found 0
--> $DIR/issue-23024.rs:9:39
@ -13,11 +14,11 @@ error[E0107]: wrong number of type arguments: expected 1, found 0
LL | println!("{:?}",(vfnfer[0] as dyn Fn)(3));
| ^^ expected 1 type argument
error[E0191]: the value of the associated type `Output` (from the trait `std::ops::FnOnce`) must be specified
--> $DIR/issue-23024.rs:9:35
error[E0191]: the value of the associated type `Output` (from trait `std::ops::FnOnce`) must be specified
--> $DIR/issue-23024.rs:9:39
|
LL | println!("{:?}",(vfnfer[0] as dyn Fn)(3));
| ^^^^^^ associated type `Output` must be specified
| ^^ help: specify the associated type: `Fn<Output = Type>`
error: aborting due to 3 previous errors

8
src/test/ui/issues/issue-28344.stderr
View file

@ -1,8 +1,8 @@
error[E0191]: the value of the associated type `Output` (from the trait `std::ops::BitXor`) must be specified
error[E0191]: the value of the associated type `Output` (from trait `std::ops::BitXor`) must be specified
--> $DIR/issue-28344.rs:4:17
|
LL | let x: u8 = BitXor::bitor(0 as u8, 0 as u8);
| ^^^^^^^^^^^^^ associated type `Output` must be specified
| ^^^^^^ help: specify the associated type: `BitXor<Output = Type>`
error[E0599]: no function or associated item named `bitor` found for type `dyn std::ops::BitXor<_>` in the current scope
--> $DIR/issue-28344.rs:4:25
@ -13,11 +13,11 @@ LL | let x: u8 = BitXor::bitor(0 as u8, 0 as u8);
| function or associated item not found in `dyn std::ops::BitXor<_>`
| help: there is a method with a similar name: `bitxor`
error[E0191]: the value of the associated type `Output` (from the trait `std::ops::BitXor`) must be specified
error[E0191]: the value of the associated type `Output` (from trait `std::ops::BitXor`) must be specified
--> $DIR/issue-28344.rs:8:13
|
LL | let g = BitXor::bitor;
| ^^^^^^^^^^^^^ associated type `Output` must be specified
| ^^^^^^ help: specify the associated type: `BitXor<Output = Type>`
error[E0599]: no function or associated item named `bitor` found for type `dyn std::ops::BitXor<_>` in the current scope
--> $DIR/issue-28344.rs:8:21

9
src/test/ui/suggestions/use-type-argument-instead-of-assoc-type.stderr
View file

@ -6,7 +6,7 @@ LL | i: Box<dyn T<usize, usize, usize, usize, B=usize>>,
| |
| unexpected type argument
error[E0191]: the value of the associated types `A` (from the trait `T`), `C` (from the trait `T`) must be specified
error[E0191]: the value of the associated types `A` (from trait `T`), `C` (from trait `T`) must be specified
--> $DIR/use-type-argument-instead-of-assoc-type.rs:7:12
|
LL | type A;
@ -16,12 +16,9 @@ LL | type C;
| ------- `C` defined here
...
LL | i: Box<dyn T<usize, usize, usize, usize, B=usize>>,
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| associated type `A` must be specified
| associated type `C` must be specified
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated types `A`, `C` must be specified
|
help: if you meant to specify the associated types, write
help: specify the associated types
|
LL | i: Box<dyn T<usize, usize, A = usize, C = usize, B=usize>>,
| ^^^^^^^^^ ^^^^^^^^^

6
src/test/ui/traits/trait-alias/trait-alias-object-fail.stderr
View file

@ -6,11 +6,11 @@ LL | let _: &dyn EqAlias = &123;
|
= note: the trait cannot use `Self` as a type parameter in the supertraits or where-clauses
error[E0191]: the value of the associated type `Item` (from the trait `std::iter::Iterator`) must be specified
--> $DIR/trait-alias-object-fail.rs:9:13
error[E0191]: the value of the associated type `Item` (from trait `std::iter::Iterator`) must be specified
--> $DIR/trait-alias-object-fail.rs:9:17
|
LL | let _: &dyn IteratorAlias = &vec![123].into_iter();
| ^^^^^^^^^^^^^^^^^ associated type `Item` must be specified
| ^^^^^^^^^^^^^ help: specify the associated type: `IteratorAlias<Item = Type>`
error: aborting due to 2 previous errors

4
src/test/ui/traits/trait-object-with-self-in-projection-output-bad.rs
View file

@ -43,8 +43,8 @@ impl NormalizableHelper for u32
fn main() {
let _x: Box<dyn Helper<Target=i32>> = Box::new(2u32);
//~^ ERROR the value of the associated type `Output` (from the trait `Base`) must be specified
//~^ ERROR the value of the associated type `Output` (from trait `Base`) must be specified
let _y: Box<dyn NormalizableHelper<Target=i32>> = Box::new(2u32);
//~^ ERROR the value of the associated type `Output` (from the trait `Base`) must be specified
//~^ ERROR the value of the associated type `Output` (from trait `Base`) must be specified
}

12
src/test/ui/traits/trait-object-with-self-in-projection-output-bad.stderr
View file

@ -1,20 +1,20 @@
error[E0191]: the value of the associated type `Output` (from the trait `Base`) must be specified
--> $DIR/trait-object-with-self-in-projection-output-bad.rs:45:17
error[E0191]: the value of the associated type `Output` (from trait `Base`) must be specified
--> $DIR/trait-object-with-self-in-projection-output-bad.rs:45:21
|
LL | type Output;
| ------------ `Output` defined here
...
LL | let _x: Box<dyn Helper<Target=i32>> = Box::new(2u32);
| ^^^^^^^^^^^^^^^^^^^^^^ associated type `Output` must be specified
| ^^^^^^^^^^^^^^^^^^ help: specify the associated type: `Helper<Target=i32, Output = Type>`
error[E0191]: the value of the associated type `Output` (from the trait `Base`) must be specified
--> $DIR/trait-object-with-self-in-projection-output-bad.rs:48:17
error[E0191]: the value of the associated type `Output` (from trait `Base`) must be specified
--> $DIR/trait-object-with-self-in-projection-output-bad.rs:48:21
|
LL | type Output;
| ------------ `Output` defined here
...
LL | let _y: Box<dyn NormalizableHelper<Target=i32>> = Box::new(2u32);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated type `Output` must be specified
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: specify the associated type: `NormalizableHelper<Target=i32, Output = Type>`
error: aborting due to 2 previous errors

9
src/test/ui/type/type-parameter-defaults-referencing-Self.stderr
View file

@ -1,8 +1,13 @@
error[E0393]: the type parameter `T` must be explicitly specified
--> $DIR/type-parameter-defaults-referencing-Self.rs:10:16
|
LL | fn foo(x: &dyn Foo) { }
| ^^^ missing reference to `T`
LL | / trait Foo<T=Self> {
LL | | fn method(&self);
LL | | }
| |_- type parameter `T` must be specified for this
LL |
LL | fn foo(x: &dyn Foo) { }
| ^^^ help: set the type parameter to the desired type: `Foo<T>`
|
= note: because of the default `Self` reference, type parameters must be specified on object types

2
src/test/ui/unboxed-closures/unboxed-closure-feature-gate.stderr
View file

@ -2,7 +2,7 @@ error[E0658]: parenthetical notation is only stable when used with `Fn`-family t
--> $DIR/unboxed-closure-feature-gate.rs:13:20
|
LL | let x: Box<dyn Foo(isize)>;
| ^^^^^^^^^^
| ^^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable

10
src/test/ui/unboxed-closures/unboxed-closure-sugar-not-used-on-fn.stderr
View file

@ -1,20 +1,22 @@
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/unboxed-closure-sugar-not-used-on-fn.rs:3:17
|
LL | fn bar1(x: &dyn Fn<(), Output=()>) {
| ^^^^^^^^^^^^^^^^^
| ^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change. Use parenthetical notation (Fn(Foo, Bar) -> Baz) instead
error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
--> $DIR/unboxed-closure-sugar-not-used-on-fn.rs:7:28
|
LL | fn bar2<T>(x: &T) where T: Fn<()> {
| ^^^^^^
| ^^
|
= note: for more information, see https://github.com/rust-lang/rust/issues/29625
= help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
= help: use parenthetical notation instead: `Fn(Foo, Bar) -> Baz`
error: aborting due to 2 previous errors

2
src/test/ui/unboxed-closures/unboxed-closure-sugar-region.stderr
View file

@ -2,7 +2,7 @@ error[E0107]: wrong number of lifetime arguments: expected 1, found 0
--> $DIR/unboxed-closure-sugar-region.rs:30:51
|
LL | fn test2(x: &dyn Foo<(isize,),Output=()>, y: &dyn Foo(isize)) {
| ^^^^^^^^^^ expected 1 lifetime argument
| ^^^ expected 1 lifetime argument
error: aborting due to previous error

2
src/test/ui/unboxed-closures/unboxed-closure-sugar-wrong-number-number-type-parameters-3.stderr
View file

@ -2,7 +2,7 @@ error[E0107]: wrong number of type arguments: expected 3, found 1
--> $DIR/unboxed-closure-sugar-wrong-number-number-type-parameters-3.rs:5:16
|
LL | fn foo(_: &dyn Three())
| ^^^^^^^ expected 3 type arguments
| ^^^^^ expected 3 type arguments
error[E0220]: associated type `Output` not found for `Three<(), [type error], [type error]>`
--> $DIR/unboxed-closure-sugar-wrong-number-number-type-parameters-3.rs:5:16

9
src/test/ui/unspecified-self-in-trait-ref.stderr
View file

@ -25,8 +25,13 @@ LL | let d = Bar::<usize, _>::lol();
error[E0393]: the type parameter `A` must be explicitly specified
--> $DIR/unspecified-self-in-trait-ref.rs:18:13
|
LL | let e = Bar::<usize>::lol();
| ^^^^^^^^^^^^^^^^^ missing reference to `A`
LL | / pub trait Bar<X=usize, A=Self> {
LL | | fn foo(&self);
LL | | }
| |_- type parameter `A` must be specified for this
...
LL | let e = Bar::<usize>::lol();
| ^^^ missing reference to `A`
|
= note: because of the default `Self` reference, type parameters must be specified on object types