implement Deref for Bar

src/test/ui/suggestions/pattern-struct-with-slice-vec-field.rs

@@ -1,7 +1,21 @@
+use std::ops::Deref;
+
 struct Foo {
     v: Vec<u32>,
 }
 
+struct Bar {
+    v: Vec<u32>,
+}
+
+impl Deref for Bar {
+    type Target = Vec<u32>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.v
+    }
+}
+
 fn f(foo: &Foo) {
     match foo {
         Foo { v: [1, 2] } => {}
@@ -10,4 +24,12 @@ fn f(foo: &Foo) {
     }
 }
 
+fn bar(bar: &Bar) {
+    match bar {
+        Bar { v: [1, 2] } => {}
+        //~^ ERROR expected an array or slice, found `Vec<u32>
+        _ => {}
+    }
+}
+
 fn main() {}

src/test/ui/suggestions/pattern-struct-with-slice-vec-field.stderr

@@ -1,9 +1,15 @@
 error[E0529]: expected an array or slice, found `Vec<u32>`
-  --> $DIR/pattern-struct-with-slice-vec-field.rs:7:18
+  --> $DIR/pattern-struct-with-slice-vec-field.rs:21:18
    |
 LL |         Foo { v: [1, 2] } => {}
    |                  ^^^^^^ pattern cannot match with input type `Vec<u32>`
 
-error: aborting due to previous error
+error[E0529]: expected an array or slice, found `Vec<u32>`
+  --> $DIR/pattern-struct-with-slice-vec-field.rs:29:18
+   |
+LL |         Bar { v: [1, 2] } => {}
+   |                  ^^^^^^ pattern cannot match with input type `Vec<u32>`
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0529`.