v8/test/mjsunit/regress/regress-parseint.js

// Copyright 2014 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 f(string, radix) {
  // Use a phi to force radix into heap number representation.
  radix = radix == 0 ? radix : radix >> 0;
  if (radix != 2) return NaN;
  return %StringParseInt(string, radix);
};
%PrepareFunctionForOptimization(f);
assertEquals(2, -4294967294 >> 0);
assertEquals(3, f("11", -4294967294));
assertEquals(NaN, f("11", -2147483650));
%OptimizeFunctionOnNextCall(f);
assertEquals(3, f("11", -4294967294));