1 files changed, 18 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-18819.rs b/tests/ui/issues/issue-18819.rs
new file mode 100644
index 00000000000..e634c55f824
--- /dev/null
+++ b/tests/ui/issues/issue-18819.rs
@@ -0,0 +1,18 @@
+trait Foo {
+    type Item;
+}
+
+struct X;
+
+impl Foo for X {
+    type Item = bool;
+}
+
+fn print_x(_: &dyn Foo<Item=bool>, extra: &str) {
+    println!("{}", extra);
+}
+
+fn main() {
+    print_x(X);
+    //~^ ERROR E0061
+}