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Diffstat (limited to 'deps/v8/test/mjsunit/es9/object-spread-ic-dontenum-transition.js')
-rw-r--r-- | deps/v8/test/mjsunit/es9/object-spread-ic-dontenum-transition.js | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/deps/v8/test/mjsunit/es9/object-spread-ic-dontenum-transition.js b/deps/v8/test/mjsunit/es9/object-spread-ic-dontenum-transition.js new file mode 100644 index 0000000000..c403566a38 --- /dev/null +++ b/deps/v8/test/mjsunit/es9/object-spread-ic-dontenum-transition.js @@ -0,0 +1,26 @@ +// 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. + +(function testMegamorphicWithDontEnumTransition() { + function spread(o) { return { ...o }; } + + // Set up transition tree + let obj = { ...{}, a: 0, b: 1, c: 2, }; + Object.defineProperty(obj, "boom", { enumerable: false, configurable: true, + writable: true }); + + // make CloneObjectIC MEGAMORPHIC + spread(new Proxy({}, {})); + + // Ensure we don't crash, and create the correct object + let result = spread({ a: 0, b: 1, c: 2, boom: 3 }); + + assertEquals({ a: 0, b: 1, c: 2, boom: 3 }, result); + assertEquals({ + enumerable: true, + writable: true, + configurable: true, + value: 3, + }, Object.getOwnPropertyDescriptor(result, "boom")); +})(); |