rust/tests/ui/feature-gates/feature-gate-trivial_bounds.rs

70 lines
1.3 KiB
Rust

#![allow(unused)]
#![allow(type_alias_bounds)]
pub trait Foo {
fn test(&self);
}
fn generic_function<X: Foo>(x: X) {}
enum E where i32: Foo { V } //~ ERROR
struct S where i32: Foo; //~ ERROR
trait T where i32: Foo {} //~ ERROR
union U where i32: Foo { f: i32 } //~ ERROR
type Y where i32: Foo = (); // OK - bound is ignored
impl Foo for () where i32: Foo { //~ ERROR
fn test(&self) {
3i32.test();
Foo::test(&4i32);
generic_function(5i32);
}
}
fn f() where i32: Foo //~ ERROR
{
let s = S;
3i32.test();
Foo::test(&4i32);
generic_function(5i32);
}
fn use_op(s: String) -> String where String: ::std::ops::Neg<Output=String> { //~ ERROR
-s
}
fn use_for() where i32: Iterator { //~ ERROR
for _ in 2i32 {}
}
trait A {}
impl A for i32 {}
struct Dst<X: ?Sized> {
x: X,
}
struct TwoStrs(str, str) where str: Sized; //~ ERROR
fn unsized_local() where Dst<dyn A>: Sized { //~ ERROR
let x: Dst<dyn A> = *(Box::new(Dst { x: 1 }) as Box<Dst<dyn A>>);
}
fn return_str() -> str where str: Sized { //~ ERROR
*"Sized".to_string().into_boxed_str()
}
// This is currently accepted because the function pointer isn't
// considered global.
fn global_hr(x: fn(&())) where fn(&()): Foo { // OK
x.test();
}
fn main() {}