Adding upstream version 1.68.2+dfsg1.upstream/1.68.2+dfsg1

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

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/ui/higher-rank-trait-bounds/normalize-under-binder/issue-62529-4.rs b/tests/ui/higher-rank-trait-bounds/normalize-under-binder/issue-62529-4.rs
new file mode 100644
index 000000000..8c2a59868
--- /dev/null
+++ b/tests/ui/higher-rank-trait-bounds/normalize-under-binder/issue-62529-4.rs
@@ -0,0 +1,39 @@
+// check-pass
+
+use std::marker::PhantomData;
+use std::mem;
+
+trait Container<'a> {
+    type Root: 'a;
+}
+
+type RootOf<'a, T> = <T as Container<'a>>::Root;
+
+struct Test<'a, T> where T: Container<'a> {
+    pub root: T::Root,
+    marker: PhantomData<&'a mut &'a mut ()>,
+}
+
+impl<'a, 'b> Container<'b> for &'a str {
+    type Root = &'b str;
+}
+
+impl<'a, T> Test<'a, T> where T: for<'b> Container<'b> {
+    fn new(root: RootOf<'a, T>) -> Test<'a, T> {
+        Test {
+            root: root,
+            marker: PhantomData
+        }
+    }
+
+    fn with_mut<F, R>(&mut self, f: F) -> R where
+            F: for<'b> FnOnce(&'b mut RootOf<'b, T>) -> R {
+        f(unsafe { mem::transmute(&mut self.root) })
+    }
+}
+
+fn main() {
+    let val = "root";
+    let mut test: Test<&str> = Test::new(val);
+    test.with_mut(|_| { });
+}