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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright (c) 2014, the Dart project authors. All rights reserved. |
| 2 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 3 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 4 // modification, are permitted provided that the following conditions are |
4 // met: | 5 // met: |
5 // | 6 // |
6 // * Redistributions of source code must retain the above copyright | 7 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 8 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 9 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 10 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 11 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 12 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 13 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 14 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 15 // from this software without specific prior written permission. |
15 // | 16 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 17 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 18 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 19 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 20 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 21 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 22 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 23 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 24 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 25 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 26 // (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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 28 |
| 29 import 'v8_regexp_utils.dart'; |
| 30 import 'package:expect/expect.dart'; |
28 | 31 |
29 #include "diy-fp.h" | 32 void main() { |
30 #include "utils.h" | 33 // Flags: --gc_global |
31 | 34 |
32 namespace double_conversion { | 35 // Regression test for regexp that has multiple matches and which |
| 36 // internally calls RegExpImpl::IrregexpExecOnce more than once without |
| 37 // ensuring that the regexp is compiled. |
| 38 // This can create a crash if the code was exchanged with the sweep |
| 39 // generation (for code flushing support) in GC durring the matching. |
33 | 40 |
34 void DiyFp::Multiply(const DiyFp& other) { | 41 var re = new RegExp('(s)'); |
35 // Simply "emulates" a 128 bit multiplication. | 42 |
36 // However: the resulting number only contains 64 bits. The least | 43 dynamic foo(Match m) { |
37 // significant 64 bits are only used for rounding the most significant 64 | 44 return "42"; |
38 // bits. | 45 } |
39 const uint64_t kM32 = 0xFFFFFFFFU; | 46 |
40 uint64_t a = f_ >> 32; | 47 // Run enough times to get a number of GC's (all mark sweep because of the |
41 uint64_t b = f_ & kM32; | 48 // --gc_global) flag. |
42 uint64_t c = other.f_ >> 32; | 49 for ( var i = 0; i < 10; i++) { |
43 uint64_t d = other.f_ & kM32; | 50 // Make a long string with plenty of matches for re. |
44 uint64_t ac = a * c; | 51 var x = "s foo s bar s foo s bar s"; |
45 uint64_t bc = b * c; | 52 x = x + x; |
46 uint64_t ad = a * d; | 53 x = x + x; |
47 uint64_t bd = b * d; | 54 x = x + x; |
48 uint64_t tmp = (bd >> 32) + (ad & kM32) + (bc & kM32); | 55 x = x + x; |
49 // By adding 1U << 31 to tmp we round the final result. | 56 x = x + x; |
50 // Halfway cases will be round up. | 57 x = x + x; |
51 tmp += 1U << 31; | 58 x = x + x; |
52 uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32); | 59 x.replaceAllMapped(re, foo); |
53 e_ += other.e_ + 64; | 60 } |
54 f_ = result_f; | |
55 } | 61 } |
56 | |
57 } // namespace double_conversion | |
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