1 files changed, 14 insertions, 0 deletions
diff --git a/src/test/ui/nll/relate_tys/opaque-hrtb.rs b/src/test/ui/nll/relate_tys/opaque-hrtb.rs
new file mode 100644
index 000000000..261372523
--- /dev/null
+++ b/src/test/ui/nll/relate_tys/opaque-hrtb.rs
@@ -0,0 +1,14 @@
+trait MyTrait<T> {}
+
+struct Foo;
+impl<T> MyTrait<T> for Foo {}
+
+fn bar<Input>() -> impl MyTrait<Input> {
+    Foo
+}
+
+fn foo() -> impl for<'a> MyTrait<&'a str> {
+    bar() //~ ERROR implementation of `MyTrait` is not general enough
+}
+
+fn main() {}