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 36 assertThrows("var \\u\\u\\u = 42;"); 37 assertThrows("var \\u41 = 42;"); 38 assertThrows("var \\u123 = 42;"); 39 eval("var \\u1234 = 42;"); 40 assertEquals(42, eval("\u1234")); 41 assertThrows("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). 47 assertEquals(0xFFFD, "\uFFFD".charCodeAt(0)); 48 49 // Handle unicode escapes in regexp flags correctly. 50 assertThrows("/x/g\\uim", SyntaxError); 51 assertThrows("/x/g\\u2im", SyntaxError); 52 assertThrows("/x/g\\u22im", SyntaxError); 53 assertThrows("/x/g\\u222im", SyntaxError); 54 assertThrows("/x/g\\\\u2222im", SyntaxError); 55
