let trait_impls = self.tcx.trait_impls_of(data.trait_ref.def_id);
if trait_impls.blanket_impls().is_empty()
- && let Some((impl_ty, _)) = trait_impls.non_blanket_impls().iter().next()
- && let Some(impl_def_id) = impl_ty.def() {
- let message = if trait_impls.non_blanket_impls().len() == 1 {
+ && let Some(impl_def_id) = trait_impls.non_blanket_impls().values().flatten().next()
+ {
+ let non_blanket_impl_count = trait_impls.non_blanket_impls().values().flatten().count();
+ let message = if non_blanket_impl_count == 1 {
"use the fully-qualified path to the only available implementation".to_string()
} else {
format!(
"use a fully-qualified path to a specific available implementation ({} found)",
- trait_impls.non_blanket_impls().len()
+ non_blanket_impl_count
)
};
let mut suggestions = vec![(
- trait_path_segment.ident.span.shrink_to_lo(),
+ path.span.shrink_to_lo(),
format!("<{} as ", self.tcx.type_of(impl_def_id))
)];
if let Some(generic_arg) = trait_path_segment.args {
...
LL | let x: isize = Foo::bar();
| ^^^^^^^^ cannot call associated function of trait
+ |
+help: use the fully-qualified path to the only available implementation
+ |
+LL | let x: isize = <isize as Foo>::bar();
+ | +++++++++ +
error: aborting due to previous error
|
help: use the fully-qualified path to the only available implementation
|
-LL | inner::<MyStruct as MyTrait>::my_fn();
- | ++++++++++++ +
+LL | <MyStruct as inner::MyTrait>::my_fn();
+ | ++++++++++++ +
error[E0790]: cannot refer to the associated constant on trait without specifying the corresponding `impl` type
--> $DIR/E0790.rs:30:13
|
help: use the fully-qualified path to the only available implementation
|
-LL | let _ = inner::<MyStruct as MyTrait>::MY_ASSOC_CONST;
- | ++++++++++++ +
+LL | let _ = <MyStruct as inner::MyTrait>::MY_ASSOC_CONST;
+ | ++++++++++++ +
error[E0790]: cannot call associated function on trait without specifying the corresponding `impl` type
--> $DIR/E0790.rs:50:5
--- /dev/null
+trait Bar {}
+
+trait Foo {
+ fn f() {}
+}
+
+impl Foo for dyn Bar {}
+
+fn main() {
+ Foo::f();
+ //~^ ERROR cannot call associated function on trait without specifying the corresponding `impl` type
+}
--- /dev/null
+error[E0790]: cannot call associated function on trait without specifying the corresponding `impl` type
+ --> $DIR/issue-104327.rs:10:5
+ |
+LL | fn f() {}
+ | --------- `Foo::f` defined here
+...
+LL | Foo::f();
+ | ^^^^^^ cannot call associated function of trait
+ |
+help: use the fully-qualified path to the only available implementation
+ |
+LL | <(dyn Bar + 'static) as Foo>::f();
+ | +++++++++++++++++++++++ +
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0790`.
--- /dev/null
+#![feature(object_safe_for_dispatch)]
+
+trait Foo {
+ fn f() {}
+}
+
+impl Foo for dyn Sized {}
+
+fn main() {
+ Foo::f();
+ //~^ ERROR cannot call associated function on trait without specifying the corresponding `impl` type
+}
--- /dev/null
+error[E0790]: cannot call associated function on trait without specifying the corresponding `impl` type
+ --> $DIR/issue-104328.rs:10:5
+ |
+LL | fn f() {}
+ | --------- `Foo::f` defined here
+...
+LL | Foo::f();
+ | ^^^^^^ cannot call associated function of trait
+ |
+help: use the fully-qualified path to the only available implementation
+ |
+LL | <(dyn Sized + 'static) as Foo>::f();
+ | +++++++++++++++++++++++++ +
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0790`.
|
help: use the fully-qualified path to the only available implementation
|
-LL | let _f: base::Foo = base::<Foo as HasNew>::new();
- | +++++++ +
+LL | let _f: base::Foo = <Foo as base::HasNew>::new();
+ | +++++++ +
error: aborting due to previous error