75 lines
1.6 KiB
Rust
75 lines
1.6 KiB
Rust
//@ run-pass
|
|
|
|
// Check that tautalogically false bounds are accepted, and are used
|
|
// in type inference.
|
|
#![feature(trivial_bounds)]
|
|
#![allow(unused)]
|
|
|
|
pub trait Foo {
|
|
fn test(&self);
|
|
}
|
|
|
|
fn generic_function<X: Foo>(x: X) {}
|
|
|
|
enum E where i32: Foo { V } //~ WARNING trivial_bounds
|
|
|
|
struct S where i32: Foo; //~ WARNING trivial_bounds
|
|
|
|
trait T where i32: Foo {} //~ WARNING trivial_bounds
|
|
|
|
union U where i32: Foo { f: i32 } //~ WARNING trivial_bounds
|
|
|
|
type Y where i32: Foo = ();
|
|
//~^ WARNING type_alias_bounds
|
|
//~| WARNING trivial_bounds
|
|
|
|
impl Foo for () where i32: Foo { //~ WARNING trivial_bounds
|
|
fn test(&self) {
|
|
3i32.test();
|
|
Foo::test(&4i32);
|
|
generic_function(5i32);
|
|
}
|
|
}
|
|
|
|
fn f() where i32: Foo { //~ WARNING trivial_bounds
|
|
let s = S;
|
|
3i32.test();
|
|
Foo::test(&4i32);
|
|
generic_function(5i32);
|
|
}
|
|
|
|
fn g() where &'static str: Foo { //~ WARNING trivial_bounds
|
|
"Foo".test();
|
|
Foo::test(&"Foo");
|
|
generic_function("Foo");
|
|
}
|
|
|
|
trait A {}
|
|
|
|
impl A for i32 {}
|
|
|
|
struct Dst<X: ?Sized> {
|
|
x: X,
|
|
}
|
|
|
|
struct TwoStrs(str, str) where str: Sized; //~ WARNING trivial_bounds
|
|
|
|
fn unsized_local() where for<'a> Dst<dyn A + 'a>: Sized { //~ WARNING trivial_bounds
|
|
let x: Dst<dyn A> = *(Box::new(Dst { x: 1 }) as Box<Dst<dyn A>>);
|
|
}
|
|
|
|
fn return_str() -> str where str: Sized { //~ WARNING trivial_bounds
|
|
*"Sized".to_string().into_boxed_str()
|
|
}
|
|
|
|
fn use_op(s: String) -> String where String: ::std::ops::Neg<Output=String> {
|
|
//~^ WARNING trivial_bounds
|
|
-s
|
|
}
|
|
|
|
fn use_for() where i32: Iterator { //~ WARNING trivial_bounds
|
|
for _ in 2i32 {}
|
|
}
|
|
|
|
fn main() {}
|