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1 // Copyright 2013 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 // Flags: --allow-natives-syntax | |
29 | |
30 // stubbed version of ToNumber | |
31 function ToNumber(x) { | |
32 return 311; | |
33 } | |
34 | |
35 // Reduced version of String.fromCharCode; | |
36 // does not actually do the same calculation but exhibits untagging bug. | |
37 function StringFromCharCode(code) { | |
38 var n = arguments.length; | |
39 var one_byte = %NewString(n, true); | |
40 var i; | |
41 for (i = 0; i < n; i++) { | |
42 var code = arguments[i]; | |
43 if (!%_IsSmi(code)) code = ToNumber(code) & 0xffff; | |
44 if (code > 0xff) break; | |
45 } | |
46 | |
47 var two_byte = %NewString(n - i, false); | |
48 for (var j = 0; i < n; i++, j++) { | |
49 var code = arguments[i]; | |
50 %_TwoByteSeqStringSetChar(j, code, two_byte); | |
51 } | |
52 return one_byte + two_byte; | |
53 } | |
54 | |
55 StringFromCharCode(0xFFF, 0xFFF); | |
56 StringFromCharCode(0x7C, 0x7C); | |
57 %OptimizeFunctionOnNextCall(StringFromCharCode); | |
58 StringFromCharCode(0x7C, 0x7C); | |
59 StringFromCharCode(0xFFF, 0xFFF); | |
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