File: shadowed-type-parameter.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (30 lines) | stat: -rw-r--r-- 623 bytes parent folder | download | duplicates (22)
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
// Test that shadowed lifetimes generate an error.


struct Foo<T>(T);


impl<T> Foo<T> {
    fn shadow_in_method<T>(&self) {}
    //~^ ERROR the name `T` is already used

    fn not_shadow_in_item<U>(&self) {
        struct Bar<T, U>(T,U); // not a shadow, separate item
        fn foo<T, U>() {} // same
    }
}

trait Bar<T> {
    fn dummy(&self) -> T;

    fn shadow_in_required<T>(&self);
    //~^ ERROR the name `T` is already used

    fn shadow_in_provided<T>(&self) {}
    //~^ ERROR the name `T` is already used

    fn not_shadow_in_required<U>(&self);
    fn not_shadow_in_provided<U>(&self) {}
}

fn main() {}