1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Environment-setVariable-18.js b/js/src/jit-test/tests/debug/Environment-setVariable-18.js
new file mode 100644
index 0000000000..85339d96a9
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Environment-setVariable-18.js
@@ -0,0 +1,24 @@
+function f() {
+    (function () {
+        const otherDebugger = newGlobal({ sameZoneAs: this }).Debugger;
+        const dbg = otherDebugger(this);
+
+        const env = dbg.getNewestFrame().callee.environment;
+        var ran = false;
+        try {
+            // this should throw, as tdz_variable is still in the tdz at
+            // this point.
+            env.setVariable("tdz_variable", 10);
+            ran = true;
+        } catch (e) { }
+        assertEq(ran, false);
+    })();
+
+    function bar() {
+        return tdz_variable;
+    }
+
+
+    let tdz_variable = 10;
+}
+f();