1 files changed, 21 insertions, 0 deletions

diff --git a/src/test/ui/impl-trait/issues/issue-77987.rs b/src/test/ui/impl-trait/issues/issue-77987.rs
new file mode 100644
index 000000000..d29710b6f
--- /dev/null
+++ b/src/test/ui/impl-trait/issues/issue-77987.rs
@@ -0,0 +1,21 @@
+#![feature(type_alias_impl_trait)]
+
+// check-pass
+
+trait Foo<T> {}
+impl<T, U> Foo<T> for U {}
+
+type Scope = impl Foo<()>;
+
+#[allow(unused)]
+fn infer_scope() -> Scope {
+    ()
+}
+
+#[allow(unused)]
+fn ice() -> impl Foo<Scope>
+{
+    loop {}
+}
+
+fn main() {}