xref: /external/chromium_org/v8/test/webkit/dfg-double-vote-fuzz.js

// Copyright 2013 the V8 project authors. All rights reserved.
// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1.  Redistributions of source code must retain the above copyright
//     notice, this list of conditions and the following disclaimer.
// 2.  Redistributions in binary form must reproduce the above copyright
//     notice, this list of conditions and the following disclaimer in the
//     documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

description(
"This tests that the static analysis we use to infer if a variable should be a double doesn't crash."
);

var grandResult = 0;

for (var i = 0; i < 256; ++i) {
    code  = "function foo(o, a, b) {\n";
    code += "    var x = 0;\n";
    code += "    var c = a + b;\n";
    for (var j = 0; j < 8; ++j)
        code += "    var " + String.fromCharCode("d".charCodeAt(0) + j) + " = " + ((i & (1 << ((j / 2) | 0))) ? "0.5" : "0") + ";\n";
    code += "    for (var __i = 0; __i < 10; ++__i) {\n";
    code += "        if (a + b + 1 > __i) {\n";
    code += "            c = d;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 2 > __i) {\n";
    code += "            c = e;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 3 > __i) {\n";
    code += "            c = f;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 4 > __i) {\n";
    code += "            c = g;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 5 > __i) {\n";
    code += "            c = h;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 6 > __i) {\n";
    code += "            c = i;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 7 > __i) {\n";
    code += "            c = j;\n";
    code += "            x += c;\n";
    code += "        }\n";
    code += "        if (a + b + 8 > __i) {\n";
    code += "            c = k;\n";
    code += "            x += c;\n";
    code += "        }\n";
    for (var j = 0; j < 8; ++j) {
        code += "        if (a + b + " + (9 + j) + " > __i)\n";
        code += "            " + String.fromCharCode("d".charCodeAt(0) + j) + " = __i + " + j + " + " + ((i & (1 << (((j / 2) | 0) + 4))) ? "0.5" : "0") + ";\n";
    }
    code += "    }\n";
    code += "    return x + c;\n";
    code += "}\n";
    code += "\n";
    code += "var result = 0;\n"
    code += "for (var __j = 0; __j < 100; ++__j) {\n";
    code += "    result += foo({}, __j, __j + 1);\n";
    code += "}\n";
    code += "\n";
    code += "result";

    var theResult = eval(code);
    debug("Result value is " + theResult);
    grandResult += theResult;
}

shouldBe("grandResult", "14578304");