Add 86800

Issue: rust-lang/rust#86800

Author: fanninpm

ices/86800.rs

@@ -0,0 +1,40 @@
+#![feature(min_type_alias_impl_trait)]
+use std::future::Future;
+
+struct Connection {
+}
+
+trait Transaction {
+}
+
+struct TestTransaction<'conn> {
+    conn: &'conn Connection
+}
+
+impl<'conn> Transaction for TestTransaction<'conn> {
+}
+
+struct Context {
+}
+
+type TransactionResult<O> = Result<O, ()>;
+
+type TransactionFuture<'__, O> = impl '__ + Future<Output = TransactionResult<O>>;
+
+fn execute_transaction_fut<'f, F, O>(f: F) -> impl FnOnce(&mut dyn Transaction) -> TransactionFuture<O>
+where
+    F: FnOnce(&mut dyn Transaction) -> TransactionFuture<O> + 'f
+{
+    f
+}
+
+impl Context {
+    async fn do_transaction<O>(
+        &self, f: impl FnOnce(&mut dyn Transaction) -> TransactionFuture<O>
+    ) -> TransactionResult<O>
+    {
+        let mut conn = Connection {};
+        let mut transaction = TestTransaction { conn: &mut conn };
+        f(&mut transaction).await
+    }
+}