1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
//@ compile-flags: -Znext-solver
#![feature(staged_api)]
#![feature(const_trait_impl, rustc_attrs, intrinsics)]
#![stable(feature = "stable", since = "1.0.0")]
#[stable(feature = "stable", since = "1.0.0")]
pub const fn foo() {} //~ ERROR function has missing const stability attribute
#[unstable(feature = "unstable", issue = "none")]
pub const fn bar() {} // ok because function is unstable
#[stable(feature = "stable", since = "1.0.0")]
pub struct Foo;
impl Foo {
#[stable(feature = "stable", since = "1.0.0")]
pub const fn foo() {} //~ ERROR associated function has missing const stability attribute
#[unstable(feature = "unstable", issue = "none")]
pub const fn bar() {} // ok because function is unstable
}
#[stable(feature = "stable", since = "1.0.0")]
#[const_trait]
pub trait Bar {
#[stable(feature = "stable", since = "1.0.0")]
fn fun();
}
#[stable(feature = "stable", since = "1.0.0")]
impl const Bar for Foo {
// ok because all users must enable `const_trait_impl`
fn fun() {}
}
#[stable(feature = "stable", since = "1.0.0")]
#[rustc_intrinsic]
pub const unsafe fn size_of_val<T>(x: *const T) -> usize { 42 }
//~^ ERROR function has missing const stability attribute
fn main() {}
|
