diff options
Diffstat (limited to 'tests/ui/borrowck/issue-62007-assign-field.rs')
-rw-r--r-- | tests/ui/borrowck/issue-62007-assign-field.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tests/ui/borrowck/issue-62007-assign-field.rs b/tests/ui/borrowck/issue-62007-assign-field.rs new file mode 100644 index 000000000..5b21c0838 --- /dev/null +++ b/tests/ui/borrowck/issue-62007-assign-field.rs @@ -0,0 +1,26 @@ +// run-pass + +// Issue #62007: assigning over a field projection (`list.0 = n;` in +// this case) should be able to kill all borrows of `list.0`, so that +// `list.0` can be borrowed on the next iteration through the loop. + +#![allow(dead_code)] + +struct List<T> { + value: T, + next: Option<Box<List<T>>>, +} + +fn to_refs<T>(mut list: (&mut List<T>,)) -> Vec<&mut T> { + let mut result = vec![]; + loop { + result.push(&mut (list.0).value); + if let Some(n) = (list.0).next.as_mut() { + list.0 = n; + } else { + return result; + } + } +} + +fn main() {} |