Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-41498.rs b/src/test/ui/issues/issue-41498.rs
new file mode 100644
index 000000000..ad918ecdd
--- /dev/null
+++ b/src/test/ui/issues/issue-41498.rs
@@ -0,0 +1,17 @@
+// run-pass
+// regression test for issue #41498.
+
+struct S;
+impl S {
+    fn mutate(&mut self) {}
+}
+
+fn call_and_ref<T, F: FnOnce() -> T>(x: &mut Option<T>, f: F) -> &mut T {
+    *x = Some(f());
+    x.as_mut().unwrap()
+}
+
+fn main() {
+    let mut n = None;
+    call_and_ref(&mut n, || [S])[0].mutate();
+}