test/mjsunit/regress/regress-crbug-747062.js

// Copyright 2017 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

(function TestNonCallableForEach() {
  function foo() { [].forEach(undefined) }
  assertThrows(foo, TypeError);
  assertThrows(foo, TypeError);
  %OptimizeFunctionOnNextCall(foo);
  assertThrows(foo, TypeError);
})();

(function TestNonCallableForEachCaught() {
  function foo() { try { [].forEach(undefined) } catch(e) { return e } }
  assertInstanceof(foo(), TypeError);
  assertInstanceof(foo(), TypeError);
  %OptimizeFunctionOnNextCall(foo);
  assertInstanceof(foo(), TypeError);
})();

(function TestNonCallableMap() {
  function foo() { [].map(undefined); }
  assertThrows(foo, TypeError);
  assertThrows(foo, TypeError);
  %OptimizeFunctionOnNextCall(foo);
  assertThrows(foo, TypeError);
})();

(function TestNonCallableMapCaught() {
  function foo() { try { [].map(undefined) } catch(e) { return e } }
  assertInstanceof(foo(), TypeError);
  assertInstanceof(foo(), TypeError);
  %OptimizeFunctionOnNextCall(foo);
  assertInstanceof(foo(), TypeError);
})();