1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/modules/bad-namespace-created.js b/js/src/jit-test/tests/modules/bad-namespace-created.js
new file mode 100644
index 0000000000..cc4a6e46a8
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bad-namespace-created.js
@@ -0,0 +1,15 @@
+// Prior to https://github.com/tc39/ecma262/pull/916 it was possible for a
+// module namespace object to be successfully created that was later found to be
+// erroneous. Test that this is no longer the case.
+
+"use strict";
+
+load(libdir + "asserts.js");
+
+let a = registerModule('A', parseModule('import "B"; export {x} from "C"'));
+registerModule('B', parseModule('import * as a from "A"'));
+registerModule('C', parseModule('export * from "D"; export * from "E"'));
+registerModule('D', parseModule('export let x'));
+registerModule('E', parseModule('export let x'));
+
+assertThrowsInstanceOf(() => a.declarationInstantiation(), SyntaxError);