1 files changed, 29 insertions, 0 deletions
diff --git a/tests/ui/lifetimes/issue-79187-2.rs b/tests/ui/lifetimes/issue-79187-2.rs
new file mode 100644
index 000000000..fff92c30b
--- /dev/null
+++ b/tests/ui/lifetimes/issue-79187-2.rs
@@ -0,0 +1,29 @@
+trait Foo {}
+
+impl<F> Foo for F where F: Fn(&i32) -> &i32 {}
+
+fn take_foo(_: impl Foo) {}
+
+fn main() {
+    take_foo(|a| a);
+    //~^ ERROR implementation of `FnOnce` is not general enough
+    //~| ERROR mismatched types
+    take_foo(|a: &i32| a);
+    //~^ ERROR lifetime may not live long enough
+    //~| ERROR mismatched types
+    take_foo(|a: &i32| -> &i32 { a });
+    //~^ ERROR lifetime may not live long enough
+    //~| ERROR mismatched types
+
+    // OK
+    take_foo(identity(|a| a));
+    take_foo(identity(|a: &i32| a));
+    take_foo(identity(|a: &i32| -> &i32 { a }));
+
+    fn identity<F>(t: F) -> F
+    where
+        F: Fn(&i32) -> &i32,
+    {
+        t
+    }
+}