1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Map-constructor-generator-3.js b/js/src/jit-test/tests/collections/Map-constructor-generator-3.js
new file mode 100644
index 0000000000..3d555a0747
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-constructor-generator-3.js
@@ -0,0 +1,7 @@
+// The argument to Map may be a generator-iterator that produces no values.
+
+function* none() {
+    if (0) yield 0;
+}
+var m = new Map(none());
+assertEq(m.size, 0);