diff --git a/tests/ui/types.fixed b/tests/ui/types.fixed
new file mode 100644
index 00000000000..a71a9ec8124
--- /dev/null
+++ b/tests/ui/types.fixed
@@ -0,0 +1,14 @@
+// run-rustfix
+
+#![allow(dead_code, unused_variables)]
+
+// should not warn on lossy casting in constant types
+// because not supported yet
+const C: i32 = 42;
+const C_I64: i64 = C as i64;
+
+fn main() {
+    // should suggest i64::from(c)
+    let c: i32 = 42;
+    let c_i64: i64 = i64::from(c);
+}
diff --git a/tests/ui/types.rs b/tests/ui/types.rs
index 45846d6eef8..6f48080cedd 100644
--- a/tests/ui/types.rs
+++ b/tests/ui/types.rs
@@ -1,3 +1,7 @@
+// run-rustfix
+
+#![allow(dead_code, unused_variables)]
+
 // should not warn on lossy casting in constant types
 // because not supported yet
 const C: i32 = 42;
diff --git a/tests/ui/types.stderr b/tests/ui/types.stderr
index 97cce7add03..f85e27a24ec 100644
--- a/tests/ui/types.stderr
+++ b/tests/ui/types.stderr
@@ -1,5 +1,5 @@
 error: casting i32 to i64 may become silently lossy if types change
-  --> $DIR/types.rs:9:22
+  --> $DIR/types.rs:13:22
    |
 LL |     let c_i64: i64 = c as i64;
    |                      ^^^^^^^^ help: try: `i64::from(c)`