1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Set-iterator-remove-2.js b/js/src/jit-test/tests/collections/Set-iterator-remove-2.js
new file mode 100644
index 0000000000..e78d8a182f
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-iterator-remove-2.js
@@ -0,0 +1,13 @@
+// A map iterator can cope with removing the next entry.
+
+load(libdir + "iteration.js");
+
+var set = new Set("abcd");
+var iter = set[Symbol.iterator]();
+var log = "";
+for (let x of iter) {
+    log += x;
+    if (x === "b")
+        set.delete("c");
+}
+assertEq(log, "abd");