1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/realms/ccw-errors.js b/js/src/jit-test/tests/realms/ccw-errors.js
new file mode 100644
index 0000000000..380c81d17c
--- /dev/null
+++ b/js/src/jit-test/tests/realms/ccw-errors.js
@@ -0,0 +1,28 @@
+function test() {
+  "use strict";
+
+  const g = newGlobal({newCompartment: true});
+  Error.prototype.whence = "main global";
+  g.eval("Error.prototype.whence = 'other global'");
+
+  const obj = g.eval("[]");
+  Object.freeze(obj);
+  try {
+    obj.foo = 7;
+    assertEq("reached", "no", "This line should not be reached; the previous line should have thrown");
+  } catch(e) {
+    assertEq("" + e, `TypeError: can't define property "foo": Array is not extensible`);
+    assertEq(e.whence, "main global"); // setting operation happens in this global
+  }
+
+  const obj2 = g.eval(`obj2 = { get x() { throw new Error("go away"); } };`);
+  try {
+    obj2.x;
+    assertEq("reached", "no", "This line should not be reached; the previous line should have thrown");
+  } catch(e) {
+    assertEq("" + e, `Error: go away`);
+    assertEq(e.whence, "other global"); // Error created in other global
+  }
+}
+
+test();