1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/tests/non262/RegExp/prototype-different-global.js b/js/src/tests/non262/RegExp/prototype-different-global.js
new file mode 100644
index 0000000000..34fc5ee8a1
--- /dev/null
+++ b/js/src/tests/non262/RegExp/prototype-different-global.js
@@ -0,0 +1,28 @@
+function test(otherGlobal) {
+    var otherRegExp = otherGlobal.RegExp;
+
+    for (let name of ["global", "ignoreCase", "multiline", "sticky", "unicode", "source"]) {
+        let getter = Object.getOwnPropertyDescriptor(RegExp.prototype, name).get;
+        assertEq(typeof getter, "function");
+
+        // Note: TypeError gets reported from wrong global if cross-compartment,
+        // so we test both cases.
+        let ex;
+        try {
+            getter.call(otherRegExp.prototype);
+        } catch (e) {
+            ex = e;
+        }
+        assertEq(ex instanceof TypeError || ex instanceof otherGlobal.TypeError, true);
+    }
+
+    let flagsGetter = Object.getOwnPropertyDescriptor(RegExp.prototype, "flags").get;
+    assertEq(flagsGetter.call(otherRegExp.prototype), "");
+
+    assertEq(RegExp.prototype.toString.call(otherRegExp.prototype), "/(?:)/");
+}
+test(newGlobal());
+test(newGlobal({newCompartment: true}));
+
+if (typeof reportCompare === "function")
+    reportCompare(0, 0);