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mod a {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
impl Debug for Inner<()> {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>); //~ ERROR `a::Inner<T>` doesn't implement `Debug`
}
mod b {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
impl<T: Debug> Debug for Inner<T> {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>);
}
mod c {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
trait Trait {}
impl<T: Debug + Trait> Debug for Inner<T> {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>); //~ ERROR the trait bound `T: c::Trait` is not satisfied
}
mod d {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
trait Trait {}
impl<T> Debug for Inner<T> where T: Debug, T: Trait {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>); //~ ERROR the trait bound `T: d::Trait` is not satisfied
}
mod e {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
trait Trait {}
impl<T> Debug for Inner<T> where T: Debug + Trait {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>); //~ ERROR the trait bound `T: e::Trait` is not satisfied
}
mod f {
use std::fmt::{Debug, Formatter, Result};
struct Inner<T>(T);
trait Trait {}
impl<T: Debug> Debug for Inner<T> where T: Trait {
fn fmt(&self, f: &mut Formatter<'_>) -> Result {
todo!()
}
}
#[derive(Debug)]
struct Outer<T>(Inner<T>); //~ ERROR the trait bound `T: f::Trait` is not satisfied
}
fn main() {}
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