From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001
From: "Matt A. Tobin" <mattatobin@localhost.localdomain>
Date: Fri, 2 Feb 2018 04:16:08 -0500
Subject: Add m-esr52 at 52.6.0

---
 .../jit-test/tests/collections/Set-iterator-add-remove.js   | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 js/src/jit-test/tests/collections/Set-iterator-add-remove.js

(limited to 'js/src/jit-test/tests/collections/Set-iterator-add-remove.js')

diff --git a/js/src/jit-test/tests/collections/Set-iterator-add-remove.js b/js/src/jit-test/tests/collections/Set-iterator-add-remove.js
new file mode 100644
index 000000000..b0d3518da
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-iterator-add-remove.js
@@ -0,0 +1,13 @@
+// Removing and re-adding entries while an iterator is live causes the iterator to visit them again.
+
+var set = new Set(['a']);
+var n = 5;
+for (let v of set) {
+    assertEq(v, 'a');
+    if (n === 0)
+        break;
+    set.delete('a');
+    set.add('a');
+    n--;
+}
+assertEq(n, 0);
-- 
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