rust/tests/ui/borrowck/borrowck-borrowed-uniq-rvalue.rs

// run-rustfix

use std::collections::HashMap;

fn main() {
    let tmp: Box<_>;
    let mut buggy_map: HashMap<usize, &usize> = HashMap::new();
    buggy_map.insert(42, &*Box::new(1)); //~ ERROR temporary value dropped while borrowed

    // but it is ok if we use a temporary
    tmp = Box::new(2);
    buggy_map.insert(43, &*tmp);
}
Provide structured suggestion for dropped temp value 2022-07-14 19:12:01 -05:00			`// run-rustfix`
Test fixes and rebase conflicts 2015-01-07 20:53:58 -06:00
Provide structured suggestion for dropped temp value 2022-07-14 19:12:01 -05:00			`use std::collections::HashMap;`
forgotten tests for #3217, #2977, #3067 2012-08-17 19:30:29 -05:00
			`fn main() {`
Switched to Box::new in many places. Many of the modifications putting in `Box::new` calls also include a pointer to Issue 22405, which tracks going back to `box <expr>` if possible in the future. (Still tried to use `Box<_>` where it sufficed; thus some tests still have `box_syntax` enabled, as they use a mix of `box` and `Box::new`.) Precursor for overloaded-`box` and placement-`in`; see Issue 22181. 2015-02-15 02:52:21 -06:00			`let tmp: Box<_>;`
Update compile fail tests to use usize. 2015-01-08 05:02:42 -06:00			`let mut buggy_map: HashMap<usize, &usize> = HashMap::new();`
update tests for migrate mode by default 2019-04-22 02:40:08 -05:00			`buggy_map.insert(42, &*Box::new(1)); //~ ERROR temporary value dropped while borrowed`
Rewrite the coercion code to be more readable, more sound, and to reborrow when needed. Regarding soundness: there was a subtle bug in how it was done before; see the compile-fail test for an example. Regarding reborrowing: reborrowing allows mut and const slices/borrowed-pointers to be used with pure fns that expect immutable data. r=brson 2013-01-22 19:20:08 -06:00
forgotten tests for #3217, #2977, #3067 2012-08-17 19:30:29 -05:00			`// but it is ok if we use a temporary`
Remove box syntax from most places in src/test outside of the issues dir 2021-08-24 19:39:40 -05:00			`tmp = Box::new(2);`
Rewrite the coercion code to be more readable, more sound, and to reborrow when needed. Regarding soundness: there was a subtle bug in how it was done before; see the compile-fail test for an example. Regarding reborrowing: reborrowing allows mut and const slices/borrowed-pointers to be used with pure fns that expect immutable data. r=brson 2013-01-22 19:20:08 -06:00			`buggy_map.insert(43, &*tmp);`
forgotten tests for #3217, #2977, #3067 2012-08-17 19:30:29 -05:00			`}`