1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ui/parser/trait-object-trait-parens.rs b/tests/ui/parser/trait-object-trait-parens.rs
new file mode 100644
index 000000000..438034bc3
--- /dev/null
+++ b/tests/ui/parser/trait-object-trait-parens.rs
@@ -0,0 +1,23 @@
+trait Trait<'a> {}
+
+trait Obj {}
+
+fn f<T: (Copy) + (?Sized) + (for<'a> Trait<'a>)>() {}
+
+fn main() {
+    let _: Box<(Obj) + (?Sized) + (for<'a> Trait<'a>)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+    let _: Box<?Sized + (for<'a> Trait<'a>) + (Obj)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+    let _: Box<for<'a> Trait<'a> + (Obj) + (?Sized)>;
+    //~^ ERROR `?Trait` is not permitted in trait object types
+    //~| ERROR only auto traits can be used as additional traits
+    //~| WARN trait objects without an explicit `dyn` are deprecated
+    //~| WARN this is accepted in the current edition
+}