From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:19:13 +0200 Subject: Merging upstream version 1.68.2+dfsg1. Signed-off-by: Daniel Baumann --- .../ui/nll/issue-62007-assign-differing-fields.rs | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 tests/ui/nll/issue-62007-assign-differing-fields.rs (limited to 'tests/ui/nll/issue-62007-assign-differing-fields.rs') diff --git a/tests/ui/nll/issue-62007-assign-differing-fields.rs b/tests/ui/nll/issue-62007-assign-differing-fields.rs new file mode 100644 index 000000000..29d92b7b8 --- /dev/null +++ b/tests/ui/nll/issue-62007-assign-differing-fields.rs @@ -0,0 +1,25 @@ +// Double-check we didn't go too far with our resolution to issue +// #62007: assigning over a field projection (`list.1 = n;` in this +// case) should kill only borrows of `list.1`; `list.0` can *not* +// necessarily be borrowed on the next iteration through the loop. + +#![allow(dead_code)] + +struct List { + value: T, + next: Option>>, +} + +fn to_refs<'a, T>(mut list: (&'a mut List, &'a mut List)) -> Vec<&'a mut T> { + let mut result = vec![]; + loop { + result.push(&mut (list.0).value); //~ ERROR cannot borrow `list.0.value` as mutable + if let Some(n) = (list.0).next.as_mut() { //~ ERROR cannot borrow `list.0.next` as mutable + list.1 = n; + } else { + return result; + } + } +} + +fn main() {} -- cgit v1.2.3