1 files changed, 10 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/collections/Map-clear-3.js b/js/src/jit-test/tests/collections/Map-clear-3.js
new file mode 100644
index 0000000000..902a4cf292
--- /dev/null
+++ b/js/src/jit-test/tests/collections/Map-clear-3.js
@@ -0,0 +1,10 @@
+// Clearing a Map with a nontrivial number of elements works.
+
+var m = new Map();
+for (var i = 0; i < 100; i++)
+    m.set(i, i);
+assertEq(m.size, i);
+m.clear();
+assertEq(m.size, 0);
+m.set("a", 1);
+assertEq(m.get("a"), 1);