1 files changed, 47 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/for-of/bug1773496.js b/js/src/jit-test/tests/for-of/bug1773496.js
new file mode 100644
index 0000000000..91ec0b4c8c
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/bug1773496.js
@@ -0,0 +1,47 @@
+var shouldBail = false;
+function foo() {
+  if (shouldBail) {
+    bailout();
+    return 0;
+  }
+  for (var i = 0; i < 1000; i++) {}
+  return { value: undefined, done: true }
+}
+
+const iterable = {
+  [Symbol.iterator]() {
+    return {
+      i: 0,
+      next() {
+        return { value: this.i++, done: false }
+      },
+      return() {
+        return foo();
+      }
+    };
+  }
+}
+
+function closeIter() {
+  with ({}) {}
+  for (var x of iterable) {
+    if (x == 2) {
+      break;
+    }
+  }
+}
+
+with ({}) {}
+for (var i = 0; i < 100; i++) {
+  closeIter();
+}
+
+shouldBail = true;
+
+caught = false;
+try {
+  closeIter();
+} catch {
+  caught = true;
+}
+assertEq(caught, true);