File: cannot-capture-intersection.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 (27 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (15)
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
use std::future::Future;
use std::pin::Pin;

trait MyTrait {
    fn foo<'a, 'b>(&'a self, x: &'b i32) -> impl Future<Output = i32>;
}

trait ErasedMyTrait {
    fn foo<'life0, 'life1, 'dynosaur>(&'life0 self, x: &'life1 i32)
    -> Pin<Box<dyn Future<Output = i32> + 'dynosaur>>
    where
        'life0: 'dynosaur,
        'life1: 'dynosaur;
}

struct DynMyTrait<T: ErasedMyTrait> {
    ptr: T,
}

impl<T: ErasedMyTrait> MyTrait for DynMyTrait<T> {
    fn foo<'a, 'b>(&'a self, x: &'b i32) -> impl Future<Output = i32> {
        self.ptr.foo(x)
        //~^ ERROR hidden type for `impl Future<Output = i32>` captures lifetime that does not appear in bounds
    }
}

fn main() {}