Upload Kmake

deps/v8/test/mjsunit/regress/regress-v8-14493.js

@@ -0,0 +1,55 @@
+// Copyright 2024 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --no-lazy-feedback-allocation
+
+class A {
+  constructor(n, is_enum) {
+    if (n) {
+      Object.defineProperty(this, "p"+n,
+          {value: 0, enumerable: false, configurable: true, writable: true});
+    }
+    Object.defineProperty(this, "boom",
+        {value: 42, enumerable: is_enum, configurable: true, writable: true});
+    Object.defineProperty(this, "0",
+        {value: 55, enumerable: is_enum, configurable: true, writable: true});
+  }
+}
+
+class B extends A {
+  boom = 0;
+  [0]  = 0;
+  foo  = 1;
+
+  constructor(...args) {
+    super(...args);
+  }
+}
+
+const expected = ["0", "boom", "foo"];
+
+(function TestMonomorphic() {
+  for (let i = 1; i <= 12; i++) {
+    const b = new B(0, false);
+    assertEquals(expected, Object.keys(b));
+  }
+})();
+
+(function TestPolymorphic() {
+  for (let i = 1; i <= 12; i++) {
+    const b = new B(0, true);
+    assertEquals(expected, Object.keys(b));
+  }
+})();
+
+(function TestMegamorphic() {
+  for (let i = 1; i <= 12; i++) {
+    const b = new B(i, false);
+    assertEquals(expected, Object.keys(b));
+  }
+  for (let i = 1; i <= 12; i++) {
+    const b = new B(i, true);
+    assertEquals(expected, Object.keys(b));
+  }
+})();