1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/traits/impl-different-num-params.rs b/src/test/ui/traits/impl-different-num-params.rs
new file mode 100644
index 000000000..53400622d
--- /dev/null
+++ b/src/test/ui/traits/impl-different-num-params.rs
@@ -0,0 +1,12 @@
+trait Foo {
+    fn bar(&self, x: usize) -> Self;
+}
+impl Foo for isize {
+    fn bar(&self) -> isize {
+        //~^ ERROR method `bar` has 1 parameter but the declaration in trait `Foo::bar` has 2
+        *self
+    }
+}
+
+fn main() {
+}