text: // Copyright (c) 2020 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <script/script.h>
  #include <test/fuzz/FuzzedDataProvider.h>
  #include <test/fuzz/fuzz.h>
  #include <test/fuzz/util.h>
  
  #include <cstdint>
  #include <string>
  #include <vector>
  
  FUZZ_TARGET(script_ops)
  {
      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
      CScript script = ConsumeScript(fuzzed_data_provider);
      while (fuzzed_data_provider.remaining_bytes() > 0) {
          switch (fuzzed_data_provider.ConsumeIntegralInRange(0, 7)) {
          case 0: {
              CScript s = ConsumeScript(fuzzed_data_provider);
              script = std::move(s);
              break;
          }
          case 1: {
              const CScript& s = ConsumeScript(fuzzed_data_provider);
              script = s;
              break;
          }
          case 2:
              script << fuzzed_data_provider.ConsumeIntegral<int64_t>();
              break;
          case 3:
              script << ConsumeOpcodeType(fuzzed_data_provider);
              break;
          case 4:
              script << ConsumeScriptNum(fuzzed_data_provider);
              break;
          case 5:
              script << ConsumeRandomLengthByteVector(fuzzed_data_provider);
              break;
          case 6:
              script.clear();
              break;
          case 7: {
              (void)script.GetSigOpCount(false);
              (void)script.GetSigOpCount(true);
              (void)script.GetSigOpCount(script);
              (void)script.HasValidOps();
              (void)script.IsPayToScriptHash();
              (void)script.IsPayToWitnessScriptHash();
              (void)script.IsPushOnly();
              (void)script.IsUnspendable();
              {
                  CScript::const_iterator pc = script.begin();
                  opcodetype opcode;
                  (void)script.GetOp(pc, opcode);
                  std::vector<uint8_t> data;
                  (void)script.GetOp(pc, opcode, data);
                  (void)script.IsPushOnly(pc);
              }
              {
                  int version;
                  std::vector<uint8_t> program;
                  (void)script.IsWitnessProgram(version, program);
              }
              break;
          }
          }
      }
  }
  