1 files changed, 18 insertions, 0 deletions
diff --git a/js/xpconnect/tests/chrome/file_discardSystemSource.html b/js/xpconnect/tests/chrome/file_discardSystemSource.html
new file mode 100644
index 000000000..9f264ffe5
--- /dev/null
+++ b/js/xpconnect/tests/chrome/file_discardSystemSource.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<html>
+<head>
+<script>
+  function canary() {
+    var someBitOfSource = 42;
+  }
+  function inner() {
+    throw new Error("some error");
+  }
+  function throwSomething() {
+    inner();
+  }
+</script>
+</head>
+<body onload="someBitOfSource = 42">
+</body>
+</html>