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-rw-r--r--js/src/jit-test/tests/collections/Set-iterator-add-1.js11
1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Set-iterator-add-1.js b/js/src/jit-test/tests/collections/Set-iterator-add-1.js
new file mode 100644
index 0000000000..9f07929239
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Set-iterator-add-1.js
@@ -0,0 +1,11 @@
+// set.iterator() is live: entries added during iteration are visited.
+
+var set = new Set([5]);
+var log = '';
+for (let x of set) {
+ log += x + ';';
+ if (x > 0)
+ set.add(x - 1);
+}
+assertEq(log, '5;4;3;2;1;0;');
+assertEq(set.size, 6);