File: issue-58355.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (7 lines) | stat: -rw-r--r-- 261 bytes parent folder | download | duplicates (19) 
1
2
3
4
5
6
7
 
#![crate_type = "lib"]

pub fn foo(callback: fn() -> dyn ToString) {
    let mut x: Option<Box<dyn Fn() -> dyn ToString>> = None;
    x = Some(Box::new(callback));
    //~^ ERROR: the size for values of type `dyn ToString` cannot be known at compilation time
}