1 files changed, 14 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-22370.stderr b/tests/ui/issues/issue-22370.stderr
new file mode 100644
index 000000000..cd27c4e4e
--- /dev/null
+++ b/tests/ui/issues/issue-22370.stderr
@@ -0,0 +1,14 @@
+error[E0393]: the type parameter `T` must be explicitly specified
+  --> $DIR/issue-22370.rs:3:14
+   |
+LL | trait A<T=Self> {}
+   | --------------- type parameter `T` must be specified for this
+LL |
+LL | fn f(a: &dyn A) {}
+   |              ^ help: set the type parameter to the desired type: `A<T>`
+   |
+   = note: because of the default `Self` reference, type parameters must be specified on object types
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0393`.