1 files changed, 7 insertions, 2 deletions
diff --git a/tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/serialization-via-notifications-api.any.js b/tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/serialization-via-notifications-api.any.js
index ce643e8a7cb..4c1c1fdabb2 100644
--- a/tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/serialization-via-notifications-api.any.js
+++ b/tests/wpt/web-platform-tests/html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/serialization-via-notifications-api.any.js
@@ -2,18 +2,23 @@
 
 test(() => {
   assert_throws_dom("DataCloneError", () => {
-    new Notification("Bob: Hi", { data: new SharedArrayBuffer() });
+    // See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`
+    const sab = new WebAssembly.Memory({ shared:true, initial:1, maximum:1 }).buffer;
+    new Notification("Bob: Hi", { data: sab });
   })
 }, "SharedArrayBuffer cloning via the Notifications API's data member: basic case");
 
 test(() => {
+  // See https://github.com/whatwg/html/issues/5380 for why not `new SharedArrayBuffer()`
+  const sab = new WebAssembly.Memory({ shared:true, initial:1, maximum:1 }).buffer;
+
   let getter1Called = false;
   let getter2Called = false;
 
   assert_throws_dom("DataCloneError", () => {
     new Notification("Bob: Hi", { data: [
       { get x() { getter1Called = true; return 5; } },
-      new SharedArrayBuffer(),
+      sab,
       { get x() { getter2Called = true; return 5; } }
     ]});
   });