1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 "Tests that a dead use of Math.min(a,b) at least speculates that its arguments are indeed numbers." 26 ); 27 28 function foo(a, b) { 29 Math.min(a.f, b.f); 30 return 100; 31 } 32 33 function bar(a, b) { 34 Math.min(a.f, b.f); 35 return 100; 36 } 37 38 var x = {f:42}; 39 var y = {f:43}; 40 var ok = null; 41 var expected = 42; 42 var empty = ""; 43 44 for (var i = 0; i < 200; ++i) { 45 if (i == 150) { 46 x = {f:{valueOf:function(){ ok = i; return 37; }}}; 47 expected = 37; 48 } 49 var result = eval(empty + "foo(x, y)"); 50 if (i >= 150) 51 shouldBe("ok", "" + i); 52 shouldBe("result", "100"); 53 } 54 55 x = {f:42}; 56 y = {f:43}; 57 ok = null; 58 expected = 42; 59 60 for (var i = 0; i < 200; ++i) { 61 if (i == 150) { 62 y = {f:{valueOf:function(){ ok = i; return 37; }}}; 63 expected = 37; 64 } 65 var result = eval(empty + "bar(x, y)"); 66 if (i >= 150) 67 shouldBe("ok", "" + i); 68 shouldBe("result", "100"); 69 } 70
