test262/implementation-contributed/v8/mjsunit/compiler/regress-905555.js

26 lines
647 B
JavaScript

// 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: --allow-natives-syntax --block-concurrent-recompilation --noalways-opt
global = 1;
function boom(value) {
return global;
}
assertEquals(1, boom());
assertEquals(1, boom());
%OptimizeFunctionOnNextCall(boom, "concurrent");
assertEquals(1, boom());
this.__defineGetter__("global", () => 42);
%UnblockConcurrentRecompilation();
// boom should be deoptimized because the global property cell has changed.
assertUnoptimized(boom, "sync");
assertEquals(42, boom());