Fixes #35311.
Part of #35233.
r? @jonathandturner
return;
}
- let mut err = struct_span_err!(
- self.tcx.sess, span, E0277,
+ let mut err = struct_span_err!(self.tcx.sess, span, E0277,
"the trait bound `{}` is not satisfied",
trait_ref.to_predicate());
+ err.span_label(span, &format!("trait `{}` not satisfied",
+ trait_ref.to_predicate()));
// Try to report a help message
}
fn main() {
- some_func(5i32); //~ ERROR E0277
+ some_func(5i32);
+ //~^ ERROR the trait bound `i32: Foo` is not satisfied
+ //~| NOTE trait `i32: Foo` not satisfied
+ //~| NOTE required by `some_func`
}
fn ice<A>(a: A) {
let r = loop {};
r = r + a;
- //~^ ERROR E0277
+ //~^ ERROR the trait bound `(): Add<A>` is not satisfied
+ //~| NOTE trait `(): Add<A>` not satisfied
}
let _ = v as *const [u8]; //~ ERROR cannot cast
let _ = fat_v as *const Foo;
//~^ ERROR the trait bound `[u8]: std::marker::Sized` is not satisfied
+ //~| NOTE trait `[u8]: std::marker::Sized` not satisfied
//~| NOTE `[u8]` does not have a constant size known at compile-time
//~| NOTE required for the cast to the object type `Foo`
let _ = foo as *const str; //~ ERROR casting
let a : *const str = "hello";
let _ = a as *const Foo;
//~^ ERROR the trait bound `str: std::marker::Sized` is not satisfied
+ //~| NOTE trait `str: std::marker::Sized` not satisfied
//~| NOTE `str` does not have a constant size known at compile-time
//~| NOTE required for the cast to the object type `Foo`
const CONST_0: Debug+Sync = *(&0 as &(Debug+Sync));
//~^ ERROR `std::fmt::Debug + Sync + 'static: std::marker::Sized` is not satisfied
+//~| NOTE `std::fmt::Debug + Sync + 'static: std::marker::Sized` not satisfied
//~| NOTE does not have a constant size known at compile-time
//~| NOTE constant expressions must have a statically known size
const CONST_FOO: str = *"foo";
//~^ ERROR `str: std::marker::Sized` is not satisfied
+//~| NOTE `str: std::marker::Sized` not satisfied
//~| NOTE does not have a constant size known at compile-time
//~| NOTE constant expressions must have a statically known size
static STATIC_1: Debug+Sync = *(&1 as &(Debug+Sync));
//~^ ERROR `std::fmt::Debug + Sync + 'static: std::marker::Sized` is not satisfied
+//~| NOTE `std::fmt::Debug + Sync + 'static: std::marker::Sized` not satisfied
//~| NOTE does not have a constant size known at compile-time
//~| NOTE constant expressions must have a statically known size
static STATIC_BAR: str = *"bar";
//~^ ERROR `str: std::marker::Sized` is not satisfied
+//~| NOTE `str: std::marker::Sized` not satisfied
//~| NOTE does not have a constant size known at compile-time
//~| NOTE constant expressions must have a statically known size
fn main() {
send(before());
//~^ ERROR the trait bound `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` is not satisfied
+ //~| NOTE trait `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` not satisfied
//~| NOTE `std::rc::Rc<std::cell::Cell<i32>>` cannot be sent between threads safely
//~| NOTE required because it appears within the type `[closure
//~| NOTE required because it appears within the type `impl std::ops::Fn<(i32,)>`
send(after());
//~^ ERROR the trait bound `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` is not satisfied
+ //~| NOTE trait `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` not satisfied
//~| NOTE `std::rc::Rc<std::cell::Cell<i32>>` cannot be sent between threads safely
//~| NOTE required because it appears within the type `[closure
//~| NOTE required because it appears within the type `impl std::ops::Fn<(i32,)>`
fn cycle1() -> impl Clone {
send(cycle2().clone());
//~^ ERROR the trait bound `std::rc::Rc<std::string::String>: std::marker::Send` is not satisfied
+ //~| NOTE trait `std::rc::Rc<std::string::String>: std::marker::Send` not satisfied
//~| NOTE `std::rc::Rc<std::string::String>` cannot be sent between threads safely
//~| NOTE required because it appears within the type `impl std::clone::Clone`
//~| NOTE required by `send`
fn cycle2() -> impl Clone {
send(cycle1().clone());
//~^ ERROR the trait bound `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` is not satisfied
+ //~| NOTE trait `std::rc::Rc<std::cell::Cell<i32>>: std::marker::Send` not satisfied
//~| NOTE `std::rc::Rc<std::cell::Cell<i32>>` cannot be sent between threads safely
//~| NOTE required because it appears within the type `impl std::clone::Clone`
//~| NOTE required by `send`
fn main() {
Index::index(&[] as &[i32], 2u32);
//~^ ERROR E0277
+ //~| NOTE not satisfied
//~| NOTE trait message
//~| NOTE required by
Index::index(&[] as &[i32], Foo(2u32));
//~^ ERROR E0277
+ //~| NOTE not satisfied
//~| NOTE on impl for Foo
//~| NOTE required by
Index::index(&[] as &[i32], Bar(2u32));
//~^ ERROR E0277
+ //~| NOTE not satisfied
//~| NOTE on impl for Bar
//~| NOTE required by
}
#[rustc_error]
fn main() {
Index::<u32>::index(&[1, 2, 3] as &[i32], 2u32); //~ ERROR E0277
+ //~| NOTE not satisfied
//~| NOTE a usize is required
//~| NOTE required by
}
//~^ ERROR
//~^^ NOTE a collection of type `std::option::Option<std::vec::Vec<u8>>` cannot be built from an iterator over elements of type `&u8`
//~^^^ NOTE required by `collect`
+ //~| NOTE trait `std::option::Option<std::vec::Vec<u8>>: MyFromIterator<&u8>` not satisfied
let x: String = foobar(); //~ ERROR
//~^ NOTE test error `std::string::String` with `u8` `_` `u32`
//~^^ NOTE required by `foobar`
+ //~| NOTE trait `std::string::String: Foo<u8, _, u32>` not satisfied
}
fn main() {
let x = &[1, 2, 3] as &[i32];
x[1i32]; //~ ERROR E0277
+ //~| NOTE trait `[i32]: std::ops::Index<i32>` not satisfied
//~| NOTE slice indices are of type `usize`
x[..1i32]; //~ ERROR E0277
+ //~| NOTE trait `[i32]: std::ops::Index<std::ops::RangeTo<i32>>` not satisfied
//~| NOTE slice indices are of type `usize`
}
// suggest a where-clause, if needed
mem::size_of::<U>();
//~^ ERROR `U: std::marker::Sized` is not satisfied
+ //~| NOTE trait `U: std::marker::Sized` not satisfied
//~| HELP consider adding a `where U: std::marker::Sized` bound
//~| NOTE required by `std::mem::size_of`
mem::size_of::<Misc<U>>();
//~^ ERROR `U: std::marker::Sized` is not satisfied
+ //~| NOTE trait `U: std::marker::Sized` not satisfied
//~| HELP consider adding a `where U: std::marker::Sized` bound
//~| NOTE required because it appears within the type `Misc<U>`
//~| NOTE required by `std::mem::size_of`
<u64 as From<T>>::from;
//~^ ERROR `u64: std::convert::From<T>` is not satisfied
+ //~| NOTE trait `u64: std::convert::From<T>` not satisfied
//~| HELP consider adding a `where u64: std::convert::From<T>` bound
//~| NOTE required by `std::convert::From::from`
<u64 as From<<T as Iterator>::Item>>::from;
//~^ ERROR `u64: std::convert::From<<T as std::iter::Iterator>::Item>` is not satisfied
+ //~| NOTE trait `u64: std::convert::From<<T as std::iter::Iterator>::Item>` not satisfied
//~| HELP consider adding a `where u64:
//~| NOTE required by `std::convert::From::from`
<Misc<_> as From<T>>::from;
//~^ ERROR `Misc<_>: std::convert::From<T>` is not satisfied
+ //~| NOTE trait `Misc<_>: std::convert::From<T>` not satisfied
//~| NOTE required by `std::convert::From::from`
// ... and also not if the error is not related to the type
mem::size_of::<[T]>();
//~^ ERROR `[T]: std::marker::Sized` is not satisfied
+ //~| NOTE `[T]: std::marker::Sized` not satisfied
//~| NOTE `[T]` does not have a constant size
//~| NOTE required by `std::mem::size_of`
mem::size_of::<[&U]>();
//~^ ERROR `[&U]: std::marker::Sized` is not satisfied
+ //~| NOTE `[&U]: std::marker::Sized` not satisfied
//~| NOTE `[&U]` does not have a constant size
//~| NOTE required by `std::mem::size_of`
}
projects / rust.git / commitdiff