1 files changed, 43 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/cross-compartment-getter.js b/js/src/tests/non262/RegExp/cross-compartment-getter.js
new file mode 100644
index 0000000000..c625c63177
--- /dev/null
+++ b/js/src/tests/non262/RegExp/cross-compartment-getter.js
@@ -0,0 +1,43 @@
+const otherGlobal = newGlobal({newCompartment: true});
+
+let regExp = otherGlobal.eval("/a(b|c)/iy");
+
+function get(name) {
+    const descriptor = Object.getOwnPropertyDescriptor(RegExp.prototype, name);
+    return descriptor.get.call(regExp);
+}
+
+assertEq(get("flags"), "iy");
+assertEq(get("global"), false);
+assertEq(get("ignoreCase"), true);
+assertEq(get("multiline"), false);
+assertEq(get("dotAll"), false);
+assertEq(get("source"), "a(b|c)");
+assertEq(get("sticky"), true);
+assertEq(get("unicode"), false);
+
+regExp = otherGlobal.eval("new RegExp('', 'gu')");
+
+assertEq(get("flags"), "gu");
+assertEq(get("global"), true);
+assertEq(get("ignoreCase"), false);
+assertEq(get("multiline"), false);
+assertEq(get("dotAll"), false);
+assertEq(get("source"), "(?:)");
+assertEq(get("sticky"), false);
+assertEq(get("unicode"), true);
+
+// Trigger escaping
+regExp = otherGlobal.eval("new RegExp('a/b', '')");
+
+assertEq(get("flags"), "");
+assertEq(get("global"), false);
+assertEq(get("ignoreCase"), false);
+assertEq(get("multiline"), false);
+assertEq(get("dotAll"), false);
+assertEq(get("source"), "a\\/b");
+assertEq(get("sticky"), false);
+assertEq(get("unicode"), false);
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);