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Issue 7562005: Revert "Make window.{undefined,NaN,Infinity} read-only" (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 4 months ago
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1 // Copyright 2009 the V8 project authors. All rights reserved. 1 // Copyright 2009 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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69 array = [ 69 array = [
70 "E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", "SQRT1_2", "SQRT2"]; 70 "E", "LN10", "LN2", "LOG2E", "LOG10E", "PI", "SQRT1_2", "SQRT2"];
71 CheckDontDelete(Math, array, "Math2"); 71 CheckDontDelete(Math, array, "Math2");
72 72
73 array = [ 73 array = [
74 "escape", "unescape", "decodeURI", "decodeURIComponent", "encodeURI", 74 "escape", "unescape", "decodeURI", "decodeURIComponent", "encodeURI",
75 "encodeURIComponent", "isNaN", "isFinite", "parseInt", "parseFloat", "eval", 75 "encodeURIComponent", "isNaN", "isFinite", "parseInt", "parseFloat", "eval",
76 "execScript"]; 76 "execScript"];
77 CheckEcmaSemantics(this, array, "Global"); 77 CheckEcmaSemantics(this, array, "Global");
78 CheckReadOnlyAttr(this, "Infinity"); 78 CheckReadOnlyAttr(this, "Infinity");
79 CheckReadOnlyAttr(this, "NaN");
80 CheckReadOnlyAttr(this, "undefined");
81 79
82 array = ["exec", "test", "toString", "compile"]; 80 array = ["exec", "test", "toString", "compile"];
83 CheckEcmaSemantics(RegExp.prototype, array, "RegExp prototype"); 81 CheckEcmaSemantics(RegExp.prototype, array, "RegExp prototype");
84 82
85 array = [ 83 array = [
86 "toString", "toLocaleString", "valueOf", "hasOwnProperty", 84 "toString", "toLocaleString", "valueOf", "hasOwnProperty",
87 "isPrototypeOf", "propertyIsEnumerable", "__defineGetter__", 85 "isPrototypeOf", "propertyIsEnumerable", "__defineGetter__",
88 "__lookupGetter__", "__defineSetter__", "__lookupSetter__"]; 86 "__lookupGetter__", "__defineSetter__", "__lookupSetter__"];
89 CheckEcmaSemantics(Object.prototype, array, "Object prototype"); 87 CheckEcmaSemantics(Object.prototype, array, "Object prototype");
90 88
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184 182
185 183
186 function CheckReadOnlyAttr(type, prop) { 184 function CheckReadOnlyAttr(type, prop) {
187 var old = type[prop]; 185 var old = type[prop];
188 if (!type[prop]) return; 186 if (!type[prop]) return;
189 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop); 187 assertTrue(type.hasOwnProperty(prop), "inherited: " + prop);
190 var deleted = delete type[prop]; 188 var deleted = delete type[prop];
191 assertFalse(deleted, "delete operator returned true: " + prop); 189 assertFalse(deleted, "delete operator returned true: " + prop);
192 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop); 190 assertTrue(type.hasOwnProperty(prop), "not there after delete: " + prop);
193 type[prop] = "foo"; 191 type[prop] = "foo";
194 assertEquals(old, type[prop], "overwritable: " + prop); 192 assertEquals("foo", type[prop], "overwritable: " + prop);
195 } 193 }
196 194
197 print("OK"); 195 print("OK");
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