diff options
Diffstat (limited to 'tests/ui/nll/polonius/call-kills-loans.rs')
-rw-r--r-- | tests/ui/nll/polonius/call-kills-loans.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/nll/polonius/call-kills-loans.rs b/tests/ui/nll/polonius/call-kills-loans.rs new file mode 100644 index 000000000..f430e9211 --- /dev/null +++ b/tests/ui/nll/polonius/call-kills-loans.rs @@ -0,0 +1,23 @@ +// `Call` terminators can write to a local which has existing loans +// and those need to be killed like a regular assignment to a local. +// This is a simplified version of issue 47680, is correctly accepted +// by NLL but was incorrectly rejected by Polonius because of these +// missing `killed` facts. + +// check-pass +// compile-flags: -Z polonius + +struct Thing; + +impl Thing { + fn next(&mut self) -> &mut Self { unimplemented!() } +} + +fn main() { + let mut temp = &mut Thing; + + loop { + let v = temp.next(); + temp = v; // accepted by NLL, was incorrectly rejected by Polonius + } +} |