node/deps/v8/test/mjsunit/shared-memory/shared-string-promotion-minor.js
Michaël Zasso 6bd756d7c6
deps: update V8 to 10.7.193.13
PR-URL: https://github.com/nodejs/node/pull/44741
Fixes: https://github.com/nodejs/node/issues/44650
Fixes: https://github.com/nodejs/node/issues/37472
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2022-10-11 07:24:33 +02:00

29 lines
808 B
JavaScript

// Copyright 2022 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: --expose-gc --allow-natives-syntax --verify-heap --shared-string-table
const old = {};
old.bar = 100;
gc();
assertFalse(%InYoungGeneration(old));
const foo = 'a'.repeat(9);
assertTrue(%InYoungGeneration(foo));
assertTrue(%IsInPlaceInternalizableString(foo));
// Create old-to-new reference.
old.foo = foo;
// The second minor GC would usally promote that string
// into old space, with --shared-string-table it is promoted
// into shared heap instead. This should create an old-to-shared
// reference from an old-to-new slot.
gc({type: "minor"});
gc({type: "minor"});
// An additional full GC for heap verification.
gc();