| // Copyright 2018 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 |
| |
| function spread(o) { return { ...o }; } |
| |
| (function setupPolymorphicFeedback() { |
| function C1() { this.p0 = 1; } |
| function C2() { this.p1 = 2; this.p2 = 3; } |
| assertEquals({ p0: 1 }, spread(new C1)); |
| assertEquals({ p1: 2, p2: 3 }, spread(new C2)); |
| })(); |
| |
| gc(); // Clobber cached map in feedback[0], and check that we don't crash |
| function C3() { this.p0 = 3; } |
| assertEquals({ p0: 3 }, spread(new C3)); |
