| // Test that we give a custom error (E0373) for the case where a | |
| // closure is escaping current frame, and offer a suggested code edit. | |
| // I refrained from including the precise message here, but the | |
| // original text as of the time of this writing is: | |
| // | |
| // closure may outlive the current function, but it borrows `books`, | |
| // which is owned by the current function | |
| fn foo<'a>(x: &'a i32) -> Box<dyn FnMut() + 'a> { | |
| let mut books = vec![1,2,3]; | |
| Box::new(|| books.push(4)) | |
| //~^ ERROR E0373 | |
| } | |
| fn main() { } |