| 1 | /*
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| 2 | Copyright (c) 2017, Lawrence Livermore National Security, LLC.
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| 3 | Produced at the Lawrence Livermore National Laboratory
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| 4 | Written by Chunhua Liao, Pei-Hung Lin, Joshua Asplund,
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| 5 | Markus Schordan, and Ian Karlin
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| 6 | (email: liao6@llnl.gov, lin32@llnl.gov, asplund1@llnl.gov,
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| 7 | schordan1@llnl.gov, karlin1@llnl.gov)
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| 8 | LLNL-CODE-732144
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| 9 | All rights reserved.
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| 10 |
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| 11 | This file is part of DataRaceBench. For details, see
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| 12 | https://github.com/LLNL/dataracebench. Please also see the LICENSE file
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| 13 | for our additional BSD notice.
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| 14 |
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| 15 | Redistribution and use in source and binary forms, with
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| 16 | or without modification, are permitted provided that the following
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| 17 | conditions are met:
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| 18 |
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| 19 | * Redistributions of source code must retain the above copyright
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| 20 | notice, this list of conditions and the disclaimer below.
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| 21 |
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| 22 | * Redistributions in binary form must reproduce the above copyright
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| 23 | notice, this list of conditions and the disclaimer (as noted below)
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| 24 | in the documentation and/or other materials provided with the
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| 25 | distribution.
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| 26 |
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| 27 | * Neither the name of the LLNS/LLNL nor the names of its contributors
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| 28 | may be used to endorse or promote products derived from this
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| 29 | software without specific prior written permission.
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| 30 |
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| 31 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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| 32 | CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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| 33 | INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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| 34 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 35 | DISCLAIMED. IN NO EVENT SHALL LAWRENCE LIVERMORE NATIONAL
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| 36 | SECURITY, LLC, THE U.S. DEPARTMENT OF ENERGY OR CONTRIBUTORS BE
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| 37 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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| 38 | OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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| 39 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 40 | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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| 41 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 42 | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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| 43 | IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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| 44 | THE POSSIBILITY OF SUCH DAMAGE.
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| 45 | */
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| 46 |
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| 47 | /*
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| 48 | A function arguments is passed by reference:
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| 49 | its data-sharing attribute is the same as its actual argument's.
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| 50 | i is shared. *q is shared.
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| 51 | Data race pair: *q(i)@59:4 vs. *q(i)@59:4
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| 52 | */
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| 53 |
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| 54 | #include<stdio.h>
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| 55 |
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| 56 | /* argument pass-by-reference */
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| 57 | void f1(int* q)
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| 58 | {
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| 59 | *q += 1;
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| 60 | }
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| 61 |
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| 62 | int main()
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| 63 | {
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| 64 | int i=0;
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| 65 | #pragma omp parallel
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| 66 | {
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| 67 | f1(&i);
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| 68 | }
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| 69 | printf ("i=%d\n",i);
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| 70 | return 0;
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| 71 | }
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