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annotate projects/compiler-rt/test/fuzzer/RepeatedBytesTest.cpp @ 181:df311c476dd5

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CreateIdentifierInfo in ParseCbC (not yet worked)
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Sun, 31 May 2020 12:30:11 +0900
parents f476a9ba4795
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 // This file is distributed under the University of Illinois Open Source
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2 // License. See LICENSE.TXT for details.
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3
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4 // Simple test for a fuzzer. The fuzzer must find repeated bytes.
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5 #include <assert.h>
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6 #include <cstddef>
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7 #include <cstdint>
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8 #include <cstdlib>
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9 #include <iostream>
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10 #include <ostream>
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12 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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13 assert(Data);
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14 // Looking for AAAAAAAAAAAAAAAAAAAAAA or some such.
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15 size_t CurA = 0, MaxA = 0;
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16 for (size_t i = 0; i < Size; i++) {
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17 // Make sure there are no conditionals in the loop so that
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18 // coverage can't help the fuzzer.
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19 int EQ = Data[i] == 'A';
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20 CurA = EQ * (CurA + 1);
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21 int GT = CurA > MaxA;
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22 MaxA = GT * CurA + (!GT) * MaxA;
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23 }
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24 if (MaxA >= 20) {
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25 std::cout << "BINGO; Found the target (Max: " << MaxA << "), exiting\n"
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26 << std::flush;
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27 exit(0);
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28 }
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29 return 0;
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30 }
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