diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs
index 7af88e32aec0d..2cd7208b1d9dd 100644
--- a/compiler/rustc_parse/src/parser/expr.rs
+++ b/compiler/rustc_parse/src/parser/expr.rs
@@ -1,3 +1,4 @@
+// ignore-tidy-filelength
 use super::diagnostics::SnapshotParser;
 use super::pat::{CommaRecoveryMode, Expected, RecoverColon, RecoverComma};
 use super::ty::{AllowPlus, RecoverQPath, RecoverReturnSign};
diff --git a/tests/ui/parser/recover/recover-parens-around-match-arm-head.fixed b/tests/ui/parser/recover/recover-parens-around-match-arm-head.fixed
new file mode 100644
index 0000000000000..6b9b7fa882a07
--- /dev/null
+++ b/tests/ui/parser/recover/recover-parens-around-match-arm-head.fixed
@@ -0,0 +1,12 @@
+// run-rustfix
+fn main() {
+    let val = 42;
+    let x = match val {
+        0 if true => {
+        //~^ ERROR unexpected parentheses surrounding `match` arm pattern
+            42u8
+        }
+        _ => 0u8,
+    };
+    let _y: u32 = x.into(); //~ ERROR mismatched types
+}
diff --git a/tests/ui/parser/recover/recover-parens-around-match-arm-head.rs b/tests/ui/parser/recover/recover-parens-around-match-arm-head.rs
index 20d27c256563b..f523581e2da19 100644
--- a/tests/ui/parser/recover/recover-parens-around-match-arm-head.rs
+++ b/tests/ui/parser/recover/recover-parens-around-match-arm-head.rs
@@ -1,3 +1,4 @@
+// run-rustfix
 fn main() {
     let val = 42;
     let x = match val {
@@ -8,4 +9,4 @@ fn main() {
         _ => 0u8,
     };
     let _y: u32 = x; //~ ERROR mismatched types
-}
\ No newline at end of file
+}
diff --git a/tests/ui/parser/recover/recover-parens-around-match-arm-head.stderr b/tests/ui/parser/recover/recover-parens-around-match-arm-head.stderr
index 0d1143fbc99f4..bad4d7d2f19f5 100644
--- a/tests/ui/parser/recover/recover-parens-around-match-arm-head.stderr
+++ b/tests/ui/parser/recover/recover-parens-around-match-arm-head.stderr
@@ -1,5 +1,5 @@
 error: unexpected parentheses surrounding `match` arm pattern
-  --> $DIR/recover-parens-around-match-arm-head.rs:4:9
+  --> $DIR/recover-parens-around-match-arm-head.rs:5:9
    |
 LL |         (0 if true) => {
    |         ^         ^
@@ -11,7 +11,7 @@ LL +         0 if true => {
    |
 
 error[E0308]: mismatched types
-  --> $DIR/recover-parens-around-match-arm-head.rs:10:19
+  --> $DIR/recover-parens-around-match-arm-head.rs:11:19
    |
 LL |     let _y: u32 = x;
    |             ---   ^ expected `u32`, found `u8`