nodejs
diff --git a/‎test/parallel/test-util-inspect.js‎
Lines changed: 32 additions & 0 deletions b/‎test/parallel/test-util-inspect.js‎
Lines changed: 32 additions & 0 deletions
@@ -3021,3 +3021,35 @@ assert.strictEqual(
       '}'
   );
 }
+
+{
+  // Confirm null prototype of generator prototype displays as expected.
+
+  function getProtoOfProto() {
+    return Object.getPrototypeOf(Object.getPrototypeOf(function* () {}));
+  }
+
+  function* generator() {}
+
+  const generatorPrototype = Object.getPrototypeOf(generator);
+  const originalProtoOfProto = Object.getPrototypeOf(generatorPrototype);
+  assert.strictEqual(getProtoOfProto(), originalProtoOfProto);
+  Object.setPrototypeOf(generatorPrototype, null);
+  assert.notStrictEqual(getProtoOfProto, originalProtoOfProto);
+
+  // This is the actual test. The other assertions in this block are about
+  // making sure the test is set up correctly and isn't polluting other tests.
+  assert.strictEqual(
+    util.inspect(generator, { showHidden: true }),
+    '[GeneratorFunction: generator] {\n' +
+    '  [length]: 0,\n' +
+    "  [name]: 'generator',\n" +
+    "  [prototype]: Object [Generator] { [Symbol(Symbol.toStringTag)]: 'Generator' },\n" + // eslint-disable-line max-len
+    "  [Symbol(Symbol.toStringTag)]: 'GeneratorFunction'\n" +
+    '}'
+  );
+
+  // Reset so we don't pollute other tests
+  Object.setPrototypeOf(generatorPrototype, originalProtoOfProto);
+  assert.strictEqual(getProtoOfProto(), originalProtoOfProto);
+}