File: field-projection-invariant.rs

package info (click to toggle)
rustc-web 1.78.0%2Bdfsg1-2~deb12u3
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,245,420 kB
  • sloc: xml: 147,985; javascript: 18,022; sh: 11,083; python: 10,265; ansic: 6,172; cpp: 5,023; asm: 4,390; makefile: 4,269
file content (24 lines) | stat: -rw-r--r-- 475 bytes parent folder | download | duplicates (6) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
//@ build-pass
struct Inv<'a>(&'a mut &'a ());
enum Foo<T> {
    Bar,
    Var(T),
}
type Supertype = Foo<for<'a> fn(Inv<'a>, Inv<'a>)>;

fn foo(x: Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>) {
    match x {
        Supertype::Bar => {}
        Supertype::Var(x) => {}
    }
}

fn foo_nested(x: Foo<Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>>) {
    match x {
        Foo::Bar => {}
        Foo::Var(Supertype::Bar) => {}
        Foo::Var(Supertype::Var(x)) => {}
    }
}

fn main() {}