Merging upstream version 1.70.0+dfsg1.

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

1 files changed, 38 insertions, 0 deletions

diff --git a/tests/ui/traits/new-solver/lazy-nested-obligations-3.rs b/tests/ui/traits/new-solver/lazy-nested-obligations-3.rs
new file mode 100644
index 000000000..baf399572
--- /dev/null
+++ b/tests/ui/traits/new-solver/lazy-nested-obligations-3.rs
@@ -0,0 +1,38 @@
+// check-pass
+// compile-flags: -Ztrait-solver=next
+// Issue 96750
+
+use std::marker::PhantomData;
+
+trait AsyncFn<Arg> {
+    type Output;
+}
+trait RequestFamily {
+    type Type<'a>;
+}
+trait Service {}
+
+struct MyFn;
+impl AsyncFn<String> for MyFn {
+    type Output = ();
+}
+
+impl RequestFamily for String {
+    type Type<'a> = String;
+}
+
+struct ServiceFromAsyncFn<F, Req>(F, PhantomData<Req>);
+
+impl<F, Req, O> Service for ServiceFromAsyncFn<F, Req>
+where
+    Req: RequestFamily,
+    F: AsyncFn<Req>,
+    F: for<'a> AsyncFn<Req::Type<'a>, Output = O>,
+{
+}
+
+fn assert_service() -> impl Service {
+    ServiceFromAsyncFn(MyFn, PhantomData)
+}
+
+fn main() {}