1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/tests/non262/Iterator/prototype/map/reenter-map-generator-from-mapper.js b/js/src/tests/non262/Iterator/prototype/map/reenter-map-generator-from-mapper.js
new file mode 100644
index 0000000000..b7a0d56d5c
--- /dev/null
+++ b/js/src/tests/non262/Iterator/prototype/map/reenter-map-generator-from-mapper.js
@@ -0,0 +1,15 @@
+// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
+
+// Re-entering the map() generator from the called mapper fails.
+
+let iterator;
+function mapper(x) {
+  let n = iterator.next();
+  return x;
+}
+iterator = [0].values().map(mapper);
+
+assertThrowsInstanceOf(iterator.next, TypeError);
+
+if (typeof reportCompare == 'function')
+  reportCompare(0, 0);