1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testBug582766.js b/js/src/jit-test/tests/basic/testBug582766.js
new file mode 100644
index 0000000000..cfcafbed08
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testBug582766.js
@@ -0,0 +1,18 @@
+expected = 4;
+
+var fourth = { nextSibling: null };
+var third  = { nextSibling: fourth };
+var second = { nextSibling: third };
+var first  = { nextSibling: second };
+
+function f() {
+  let loopcount = 0;
+  for (let node = first; node; node = node.nextSibling) {
+    loopcount++;
+  }
+  return loopcount;
+}
+
+actual = f();
+
+assertEq(actual, expected);