1 files changed, 20 insertions, 0 deletions
diff --git a/tests/ui/lifetimes/issue-84398.rs b/tests/ui/lifetimes/issue-84398.rs
new file mode 100644
index 000000000..1912fa59b
--- /dev/null
+++ b/tests/ui/lifetimes/issue-84398.rs
@@ -0,0 +1,20 @@
+// check-pass
+
+pub trait Deserialize<'de>: Sized {}
+pub trait DeserializeOwned: for<'de> Deserialize<'de> {}
+
+pub trait Extensible {
+    type Config;
+}
+
+// The `C` here generates a `C: Sized` candidate
+pub trait Installer<C> {
+    fn init<B: Extensible<Config = C>>(&mut self) -> ()
+    where
+        // This clause generates a `for<'de> C: Sized` candidate
+        B::Config: DeserializeOwned,
+    {
+    }
+}
+
+fn main() {}