ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/test/thirdparty/Fuzzer/test/CustomMutatorTest.cpp

   1 // This file is distributed under the University of Illinois Open Source
   2 // License. See LICENSE.TXT for details.
   3
   4 // Simple test for a cutom mutator.
   5 #include <assert.h>
   6 #include <cstdint>
   7 #include <cstdlib>
   8 #include <cstddef>
   9 #include <iostream>
  10
  11 #include "FuzzerInterface.h"
  12
  13 static volatile int Sink;
  14
  15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  16   assert(Data);
  17   if (Size > 0 && Data[0] == 'H') {
  18     Sink = 1;
  19     if (Size > 1 && Data[1] == 'i') {
  20       Sink = 2;
  21       if (Size > 2 && Data[2] == '!') {
  22         std::cout << "BINGO; Found the target, exiting\n";
  23         exit(1);
  24       }
  25     }
  26   }
  27   return 0;
  28 }
  29
  30 extern "C" size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size,
  31                                           size_t MaxSize, unsigned int Seed) {
  32   static bool Printed;
  33   if (!Printed) {
  34     std::cerr << "In LLVMFuzzerCustomMutator\n";
  35     Printed = true;
  36   }
  37   return LLVMFuzzerMutate(Data, Size, MaxSize);
  38 }