1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/constructor-regexp.js b/js/src/tests/non262/RegExp/constructor-regexp.js
new file mode 100644
index 0000000000..419b027138
--- /dev/null
+++ b/js/src/tests/non262/RegExp/constructor-regexp.js
@@ -0,0 +1,61 @@
+var BUGNUMBER = 1130860;
+var summary = "RegExp constructor shouldn't invoke source/flags getters on argument RegExp instance.";
+
+print(BUGNUMBER + ": " + summary);
+
+// same-compartment
+var a = /foo/;
+var flagsCalled = false;
+var sourceCalled = false;
+Object.defineProperty(a, "source", { get: () => {
+  sourceCalled = true;
+  return "bar";
+}});
+Object.defineProperty(a, "flags", { get: () => {
+  flagsCalled = true;
+  return "i";
+}});
+
+assertEq(a.source, "bar");
+assertEq(a.flags, "i");
+assertEq(sourceCalled, true);
+assertEq(flagsCalled, true);
+
+sourceCalled = false;
+flagsCalled = false;
+assertEq(new RegExp(a).source, "foo");
+assertEq(sourceCalled, false);
+assertEq(flagsCalled, false);
+
+// cross-compartment
+var g = newGlobal();
+var b = g.eval(`
+var b = /foo2/;
+var flagsCalled = false;
+var sourceCalled = false;
+Object.defineProperty(b, "source", { get: () => {
+  sourceCalled = true;
+  return "bar2";
+}});
+Object.defineProperty(b, "flags", { get: () => {
+  flagsCalled = true;
+  return "i";
+}});
+b;
+`);
+
+assertEq(b.source, "bar2");
+assertEq(b.flags, "i");
+assertEq(g.eval("sourceCalled;"), true);
+assertEq(g.eval("flagsCalled;"), true);
+
+g.eval(`
+sourceCalled = false;
+flagsCalled = false;
+`);
+assertEq(new RegExp(b).source, "foo2");
+assertEq(g.eval("sourceCalled;"), false);
+assertEq(g.eval("flagsCalled;"), false);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);