1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/issue-74684-1.rs b/src/test/ui/generic-associated-types/issue-74684-1.rs
new file mode 100644
index 000000000..0e3899a88
--- /dev/null
+++ b/src/test/ui/generic-associated-types/issue-74684-1.rs
@@ -0,0 +1,25 @@
+#![feature(generic_associated_types)]
+
+trait Fun {
+    type F<'a>: ?Sized;
+
+    fn identity<'a>(t: &'a Self::F<'a>) -> &'a Self::F<'a> { t }
+}
+
+impl <T> Fun for T {
+    type F<'a> = [u8];
+}
+
+fn bug<'a, T: ?Sized + Fun<F<'a> = [u8]>>(_ : Box<T>) -> &'static T::F<'a> {
+    let a = [0; 1];
+    let _x = T::identity(&a);
+      //~^ ERROR: `a` does not live long enough
+    todo!()
+}
+
+
+fn main() {
+    let x = 10;
+
+    bug(Box::new(x));
+}