diff --git a/tests/source/closure.rs b/tests/source/closure.rs
index cab73b28c2a6..cac3b493bfca 100644
--- a/tests/source/closure.rs
+++ b/tests/source/closure.rs
@@ -198,3 +198,9 @@ fn issue2171() {
         }
     })
 }
+
+fn issue2207() {
+    a.map(|_| unsafe {
+        a_very_very_very_very_very_very_very_long_function_name_or_anything_else()
+    }.to_string())
+}
diff --git a/tests/target/closure.rs b/tests/target/closure.rs
index c3a3af50bb86..c716e14711a2 100644
--- a/tests/target/closure.rs
+++ b/tests/target/closure.rs
@@ -230,3 +230,10 @@ fn issue2171() {
         }
     })
 }
+
+fn issue2207() {
+    a.map(|_| {
+        unsafe { a_very_very_very_very_very_very_very_long_function_name_or_anything_else() }
+            .to_string()
+    })
+}