diff --git a/tests/source/issue-4312.rs b/tests/source/issue-4312.rs
index 6d00867beab5..b36b0efdb9e2 100644
--- a/tests/source/issue-4312.rs
+++ b/tests/source/issue-4312.rs
@@ -1,3 +1,4 @@
+// issue 4312
 fn main() {
     /* " */
     println!("Hello, world!");
@@ -5,4 +6,17 @@ fn main() {
     println!("Hello, world!");
     /* " abc */
     println!("Hello, world!");
+    let y = 4;
+    let x = match 1 + y == 3 {
+        True => 3,
+        False => 4,
+        /* " unreachable */
+    };
+}
+
+// issue 4806
+enum X {
+    A,
+    B,
+    /*"*/
 }
diff --git a/tests/target/issue-4312.rs b/tests/target/issue-4312.rs
index 6d00867beab5..b36b0efdb9e2 100644
--- a/tests/target/issue-4312.rs
+++ b/tests/target/issue-4312.rs
@@ -1,3 +1,4 @@
+// issue 4312
 fn main() {
     /* " */
     println!("Hello, world!");
@@ -5,4 +6,17 @@ fn main() {
     println!("Hello, world!");
     /* " abc */
     println!("Hello, world!");
+    let y = 4;
+    let x = match 1 + y == 3 {
+        True => 3,
+        False => 4,
+        /* " unreachable */
+    };
+}
+
+// issue 4806
+enum X {
+    A,
+    B,
+    /*"*/
 }