Add a regression test for rust-lang#53457

varkor · Jun 3, 2019 · 41dd21a · 41dd21a
1 parent 7840a0b
commit 41dd21a
Showing 1 changed file with 15 additions and 0 deletions.
diff --git a/src/test/ui/impl-trait/issue-53457.rs b/src/test/ui/impl-trait/issue-53457.rs
@@ -0,0 +1,15 @@
+// run-pass
+
+#![feature(existential_type)]
+
+existential type X: Clone;
+
+fn bar<F: Fn(&i32) + Clone>(f: F) -> F {
+    f
+}
+
+fn foo() -> X {
+    bar(|x| ())
+}
+
+fn main() {}