mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-26 08:44:35 +00:00
26 lines
870 B
Rust
26 lines
870 B
Rust
// Verify that lifetime resolution correctly accounts for `Fn` bare trait objects.
|
|
//@ check-pass
|
|
#![allow(bare_trait_objects)]
|
|
|
|
// This should work as: fn next_u32(fill_buf: &mut dyn FnMut(&mut [u8]))
|
|
fn next_u32(fill_buf: &mut FnMut(&mut [u8])) {
|
|
let mut buf: [u8; 4] = [0; 4];
|
|
fill_buf(&mut buf);
|
|
}
|
|
|
|
fn explicit(fill_buf: &mut dyn FnMut(&mut [u8])) {
|
|
let mut buf: [u8; 4] = [0; 4];
|
|
fill_buf(&mut buf);
|
|
}
|
|
|
|
fn main() {
|
|
let _: fn(&mut FnMut(&mut [u8])) = next_u32;
|
|
let _: &dyn Fn(&mut FnMut(&mut [u8])) = &next_u32;
|
|
let _: fn(&mut FnMut(&mut [u8])) = explicit;
|
|
let _: &dyn Fn(&mut FnMut(&mut [u8])) = &explicit;
|
|
let _: fn(&mut dyn FnMut(&mut [u8])) = next_u32;
|
|
let _: &dyn Fn(&mut dyn FnMut(&mut [u8])) = &next_u32;
|
|
let _: fn(&mut dyn FnMut(&mut [u8])) = explicit;
|
|
let _: &dyn Fn(&mut dyn FnMut(&mut [u8])) = &explicit;
|
|
}
|