src/test/ui/stability-attribute/generics-default-stability-trait.rs


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

// aux-build:unstable_generic_param.rs
#![feature(unstable_default6)]

extern crate unstable_generic_param;

use unstable_generic_param::*;

struct R;

impl Trait1 for S {
    fn foo() -> () { () } // ok
}

struct S;

impl Trait1<usize> for S { //~ ERROR use of unstable library feature 'unstable_default'
    fn foo() -> usize { 0 }
}

impl Trait1<isize> for S { //~ ERROR use of unstable library feature 'unstable_default'
    fn foo() -> isize { 0 }
}

impl Trait2<usize> for S { //~ ERROR use of unstable library feature 'unstable_default'
    fn foo() -> usize { 0 }
}

impl Trait3<usize> for S {
    fn foo() -> usize { 0 } // ok
}

fn main() {
}