1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/modules/bug-1420420-4.js b/js/src/jit-test/tests/modules/bug-1420420-4.js
new file mode 100644
index 0000000000..6181183ce3
--- /dev/null
+++ b/js/src/jit-test/tests/modules/bug-1420420-4.js
@@ -0,0 +1,18 @@
+load(libdir + "asserts.js");
+
+registerModule("a", parseModule(`throw undefined`));
+
+let b = registerModule("b", parseModule(`import "a";`));
+let c = registerModule("c", parseModule(`import "a";`));
+
+moduleLink(b);
+moduleLink(c);
+
+(async () => {
+  let count = 0;
+  try { await moduleEvaluate(b) } catch (e) { count++; }
+  try { await moduleEvaluate(c) } catch (e) { count++; }
+  assertEq(count, 2);
+})();
+
+drainJobQueue();