rust/tests/ui/regions/regions-ret-borrowed-1.rs
2023-01-11 09:32:08 +00:00

18 lines
455 B
Rust

// Similar to regions-ret-borrowed.rs, but using a named lifetime. At
// some point regions-ret-borrowed reported an error but this file did
// not, due to special hardcoding around the anonymous region.
fn with<R, F>(f: F) -> R where F: for<'a> FnOnce(&'a isize) -> R {
f(&3)
}
fn return_it<'a>() -> &'a isize {
with(|o| o)
//~^ ERROR lifetime may not live long enough
}
fn main() {
let x = return_it();
println!("foo={}", *x);
}