add test files

Author: SparrowLii

src/test/ui/rfcs/rfc-2528-type-changing-struct-update/issue-92010-trait-bound-not-satisfied.rs

@@ -0,0 +1,12 @@
+#[derive(Clone)]
+struct P<T> {
+    x: T,
+    y: f64,
+}
+
+impl<T> P<T> {
+    fn y(&self, y: f64) -> Self { P{y, .. self.clone() } }
+                                       //~^ mismatched types [E0308]
+}
+
+fn main() {}

src/test/ui/rfcs/rfc-2528-type-changing-struct-update/issue-92010-trait-bound-not-satisfied.stderr

@@ -0,0 +1,12 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-92010-trait-bound-not-satisfied.rs:8:43
+   |
+LL |     fn y(&self, y: f64) -> Self { P{y, .. self.clone() } }
+   |                                           ^^^^^^^^^^^^ expected struct `P`, found `&P<T>`
+   |
+   = note: expected struct `P<T>`
+           found reference `&P<T>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.