1 files changed, 16 insertions, 1 deletions
diff --git a/core/lib.rs b/core/lib.rs
index ba0a026bc..3f4cdd2e0 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -145,7 +145,15 @@ pub mod _ops {
 #[macro_export]
 macro_rules! located_script_name {
   () => {
-    concat!("[ext:{}:{}:{}]", std::file!(), std::line!(), std::column!());
+    concat!(
+      "[ext:",
+      std::file!(),
+      ":",
+      std::line!(),
+      ":",
+      std::column!(),
+      "]"
+    )
   };
 }
 
@@ -154,6 +162,13 @@ mod tests {
   use super::*;
 
   #[test]
+  fn located_script_name() {
+    // Note that this test will fail if this file is moved. We don't
+    // test line locations because that's just too brittle.
+    assert!(located_script_name!().starts_with("[ext:core/lib.rs:"));
+  }
+
+  #[test]
   fn test_v8_version() {
     assert!(v8_version().len() > 3);
   }