1 files changed, 16 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/warp/bug1708839.js b/js/src/jit-test/tests/warp/bug1708839.js
new file mode 100644
index 0000000000..93d5c5622e
--- /dev/null
+++ b/js/src/jit-test/tests/warp/bug1708839.js
@@ -0,0 +1,16 @@
+function f(a) {
+    let m = new Uint32Array([-1]);
+    let h = m[0];
+    let r = m[0];
+    if (a) {
+        h = undefined;
+        r = 0xff;
+    }
+    return h > r;
+};
+
+assertEq(f(false), false);
+for (let i = 0; i < 100; ++i) {
+    f(true);
+}
+assertEq(f(false), false);