1 files changed, 9 insertions, 0 deletions
diff --git a/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs
new file mode 100644
index 000000000..3f122f106
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs
@@ -0,0 +1,9 @@
+#![feature(type_alias_impl_trait)]
+
+type Foo<'a, 'b> = impl std::fmt::Debug;
+
+fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) {
+    (i, i) //~ ERROR concrete type differs from previous
+}
+
+fn main() {}