// Copyright (c) 2020-present 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 <span.h>

#include <test/fuzz/FuzzedDataProvider.h>

#include <test/fuzz/fuzz.h>

#include <test/fuzz/util.h>

#include <cassert>

#include <cstddef>

#include <cstdint>

#include <string>

#include <vector>

FUZZ_TARGET(span)

{

    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());

    std::string str = fuzzed_data_provider.ConsumeBytesAsString(32);

    const std::span<const char> span{str};

    (void)span.data();

    (void)span.begin();

    (void)span.end();

    if (span.size() > 0) {

        const std::ptrdiff_t idx = fuzzed_data_provider.ConsumeIntegralInRange<std::ptrdiff_t>(0U, span.size() - 1U);

        (void)span.first(idx);

        (void)span.last(idx);

        (void)span.subspan(idx);

        (void)span.subspan(idx, span.size() - idx);

        (void)span[idx];

    }

}