1// Copyright 2011 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28// Don't allow malformed unicode escape sequences in identifiers. 29// In strings and regexps we currently allow malformed unicode escape 30// sequences without throwing a SyntaxError. Instead "\u22gk" would 31// treat the "\u" as an identity escape, and evaluate to "u22gk". 32// Due to code sharing, we did the same in identifiers. This should 33// no longer be the case. 34// See: http://code.google.com/p/v8/issues/detail?id=1620 35 36assertThrows("var \\u\\u\\u = 42;"); 37assertThrows("var \\u41 = 42;"); 38assertThrows("var \\u123 = 42;"); 39eval("var \\u1234 = 42;"); 40assertEquals(42, eval("\u1234")); 41assertThrows("var uuu = 42; var x = \\u\\u\\u"); 42 43// Regressions introduced and fixed again while fixing the above. 44 45// Handle 0xFFFD correctly (it's a valid value, and shouldn't be used 46// to mark an error). 47assertEquals(0xFFFD, "\uFFFD".charCodeAt(0)); 48 49// Handle unicode escapes in regexp flags correctly. 50assertThrows("/x/g\\uim", SyntaxError); 51assertThrows("/x/g\\u2im", SyntaxError); 52assertThrows("/x/g\\u22im", SyntaxError); 53assertThrows("/x/g\\u222im", SyntaxError); 54assertThrows("/x/g\\\\u2222im", SyntaxError); 55