1 files changed, 7 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testSettingWatchPointOnReadOnlyProp.js b/js/src/jit-test/tests/basic/testSettingWatchPointOnReadOnlyProp.js
new file mode 100644
index 000000000..78c281f05
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testSettingWatchPointOnReadOnlyProp.js
@@ -0,0 +1,7 @@
+for (var i = 0; i < 5; ++i) {
+    var o = {}
+    Object.defineProperty(o, 'x', { value:"cow", writable:false });
+    var r = o.watch('x', function() {});
+    assertEq(r, undefined);
+    o.x = 4;
+}