1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1273858-2.js b/js/src/jit-test/tests/ion/bug1273858-2.js
new file mode 100644
index 0000000000..6d274cf02b
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1273858-2.js
@@ -0,0 +1,46 @@
+// |jit-test| --no-threads
+
+function t1() {
+    let x = [];
+
+    try
+    {
+        for (let k = 0; k < 100; ++k)
+        {
+            let w = () => k; // Lexical capture
+
+            if (w() > 10)
+            {
+                throw () => w; // Lexical capture
+            }
+
+            x[k] = w;
+        }
+    }
+    catch (e)
+    {
+        // 'w' and 'k' should leave scope as exception unwinds
+
+        try {
+            eval("k");
+            throw false;
+        }
+        catch (e) {
+            if (!(e instanceof ReferenceError))
+                throw "Loop index escaped block";
+        }
+
+        try {
+            eval("w");
+            throw false;
+        }
+        catch (e) {
+            if (!(e instanceof ReferenceError))
+                throw "Local name escaped block";
+        }
+    }
+}
+t1();
+t1();
+t1();
+t1();