1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/opportunistic-region-resolve.rs b/tests/ui/traits/next-solver/opportunistic-region-resolve.rs
new file mode 100644
index 000000000..d852332d0
--- /dev/null
+++ b/tests/ui/traits/next-solver/opportunistic-region-resolve.rs
@@ -0,0 +1,19 @@
+// compile-flags: -Znext-solver
+// check-pass
+
+#![feature(rustc_attrs)]
+
+#[rustc_coinductive]
+trait Trait {}
+
+#[rustc_coinductive]
+trait Indirect {}
+impl<T: Trait + ?Sized> Indirect for T {}
+
+impl<'a> Trait for &'a () where &'a (): Indirect {}
+
+fn impls_trait<T: Trait>() {}
+
+fn main() {
+    impls_trait::<&'static ()>();
+}