1  // Copyright (c) 2020-present The Bitcoin Core developers
 2  // Distributed under the MIT software license, see the accompanying
 3  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 4  
 5  #include <span.h>
 6  #include <test/fuzz/FuzzedDataProvider.h>
 7  #include <test/fuzz/fuzz.h>
 8  #include <test/fuzz/util.h>
 9  
10  #include <cassert>
11  #include <cstddef>
12  #include <cstdint>
13  #include <string>
14  #include <vector>
15  
16  FUZZ_TARGET(span)
17  {
18      FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
19  
20      std::string str = fuzzed_data_provider.ConsumeBytesAsString(32);
21      const std::span<const char> span{str};
22      (void)span.data();
23      (void)span.begin();
24      (void)span.end();
25      if (span.size() > 0) {
26          const std::ptrdiff_t idx = fuzzed_data_provider.ConsumeIntegralInRange<std::ptrdiff_t>(0U, span.size() - 1U);
27          (void)span.first(idx);
28          (void)span.last(idx);
29          (void)span.subspan(idx);
30          (void)span.subspan(idx, span.size() - idx);
31          (void)span[idx];
32      }
33  }