Correct unused field warning on &struct match

2 files changed, 22 insertions, 4 deletions

diff --git a/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.rs b/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.rs
index 18b83370355..498e7e5e6c4 100644
--- a/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.rs
+++ b/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.rs
@@ -18,6 +18,10 @@ struct SoulHistory {
     endless_and_singing: bool
 }
 
+enum Large {
+    Suit { case: () }
+}
+
 fn main() {
     let i_think_continually = 2;
     let who_from_the_womb_remembered = SoulHistory {
@@ -31,4 +35,12 @@ fn main() {
                          endless_and_singing: true } = who_from_the_womb_remembered {
         hours_are_suns = false;
     }
+
+    let bag = &Large::Suit {
+        case: ()
+    };
+
+    match bag {
+        &Large::Suit { case } => {}
+    };
 }
diff --git a/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.stderr b/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.stderr
index 35fe5479406..cecda22280c 100644
--- a/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.stderr
+++ b/src/test/ui/lint/issue-47390-unused-variable-in-struct-pattern.stderr
@@ -1,5 +1,5 @@
 warning: unused variable: `i_think_continually`
-  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:22:9
+  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:26:9
    |
 LL |     let i_think_continually = 2;
    |         ^^^^^^^^^^^^^^^^^^^ help: consider using `_i_think_continually` instead
@@ -12,13 +12,13 @@ LL | #![warn(unused)] // UI tests pass `-A unused` (#43896)
    = note: #[warn(unused_variables)] implied by #[warn(unused)]
 
 warning: unused variable: `corridors_of_light`
-  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:29:26
+  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:33:26
    |
 LL |     if let SoulHistory { corridors_of_light,
    |                          ^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `corridors_of_light: _`
 
 warning: variable `hours_are_suns` is assigned to, but never used
-  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:30:26
+  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:34:26
    |
 LL |                          mut hours_are_suns,
    |                          ^^^^^^^^^^^^^^^^^^
@@ -26,7 +26,7 @@ LL |                          mut hours_are_suns,
    = note: consider using `_hours_are_suns` instead
 
 warning: value assigned to `hours_are_suns` is never read
-  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:32:9
+  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:36:9
    |
 LL |         hours_are_suns = false;
    |         ^^^^^^^^^^^^^^
@@ -38,3 +38,9 @@ LL | #![warn(unused)] // UI tests pass `-A unused` (#43896)
    |         ^^^^^^
    = note: #[warn(unused_assignments)] implied by #[warn(unused)]
 
+warning: unused variable: `case`
+  --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:44:24
+   |
+LL |         &Large::Suit { case } => {}
+   |                        ^^^^ help: try ignoring the field: `case: _`
+