1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/gc/bug-1439284.js b/js/src/jit-test/tests/gc/bug-1439284.js
new file mode 100644
index 0000000000..7de6e8d875
--- /dev/null
+++ b/js/src/jit-test/tests/gc/bug-1439284.js
@@ -0,0 +1,15 @@
+// |jit-test| skip-if: helperThreadCount() === 0
+
+gcparam('allocationThreshold', 1);
+setGCCallback({
+    action: "majorGC",
+});
+offThreadCompileScript(('Boolean.prototype.toString.call(new String())'));
+for (let i = 0; i < 10; i++) {
+    for (let j = 0; j < 10000; j++) Symbol.for(i + 10 * j);
+}
+try {
+    runOffThreadScript();
+} catch (e) {
+    assertEq(e.constructor, TypeError);
+}