1 files changed, 25 insertions, 0 deletions
diff --git a/tests/ui/self/self-infer.stderr b/tests/ui/self/self-infer.stderr
new file mode 100644
index 000000000..4f9e3f21d
--- /dev/null
+++ b/tests/ui/self/self-infer.stderr
@@ -0,0 +1,25 @@
+error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
+  --> $DIR/self-infer.rs:4:16
+   |
+LL |     fn f(self: _) {}
+   |                ^ not allowed in type signatures
+   |
+help: use type parameters instead
+   |
+LL |     fn f<T>(self: T) {}
+   |         +++       ~
+
+error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
+  --> $DIR/self-infer.rs:5:17
+   |
+LL |     fn g(self: &_) {}
+   |                 ^ not allowed in type signatures
+   |
+help: use type parameters instead
+   |
+LL |     fn g<T>(self: &T) {}
+   |         +++        ~
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0121`.