1 files changed, 18 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/gat-trait-path-parenthesised-args.rs b/src/test/ui/generic-associated-types/gat-trait-path-parenthesised-args.rs
new file mode 100644
index 000000000..c55b0530c
--- /dev/null
+++ b/src/test/ui/generic-associated-types/gat-trait-path-parenthesised-args.rs
@@ -0,0 +1,18 @@
+#![feature(generic_associated_types)]
+
+trait X {
+  type Y<'a>;
+}
+
+fn foo<'a>(arg: Box<dyn X<Y('a) = &'a ()>>) {}
+  //~^ ERROR: lifetime in trait object type must be followed by `+`
+  //~| ERROR: parenthesized generic arguments cannot be used
+  //~| ERROR this associated type takes 0 generic arguments but 1 generic argument
+  //~| ERROR this associated type takes 1 lifetime argument but 0 lifetime arguments
+
+
+fn bar<'a>(arg: Box<dyn X<Y() = ()>>) {}
+  //~^ ERROR: parenthesized generic arguments cannot be used
+  //~| ERROR this associated type takes 1 lifetime argument but 0 lifetime arguments
+
+fn main() {}