src/test/ui/issues/issue-35139.rs

   1 use std::fmt;
   2
   3 pub trait MethodType {
   4     type GetProp: ?Sized;
   5 }
   6
   7 pub struct MTFn;
   8
   9 impl<'a> MethodType for MTFn { //~ ERROR E0207
  10     type GetProp = dyn fmt::Debug + 'a;
  11 }
  12
  13 fn bad(a: Box<<MTFn as MethodType>::GetProp>) -> Box<dyn fmt::Debug+'static> {
  14     a
  15 }
  16
  17 fn dangling(a: &str) -> Box<dyn fmt::Debug> {
  18     bad(Box::new(a))
  19 }
  20
  21 fn main() {
  22     let mut s = "hello".to_string();
  23     let x = dangling(&s);
  24     s = String::new();
  25     println!("{:?}", x);
  26 }