Function initialize

src/test/fuzz/fuzz.cpp:64–101

static TypeTestOneInput* g_test_one_input{nullptr};

void initialize()
{
    // Terminate immediately if a fuzzing harness ever tries to create a TCP socket.
    CreateSock = [](const CService&) -> std::unique_ptr<Sock> { std::terminate(); };

    // Terminate immediately if a fuzzing harness ever tries to perform a DNS lookup.
    g_dns_lookup = [](const std::string& name, bool allow_lookup) {
        if (allow_lookup) {
            std::terminate();
        }
        return WrappedGetAddrInfo(name, false);
    };

    bool should_abort{false};
    if (std::getenv("PRINT_ALL_FUZZ_TARGETS_AND_ABORT")) {
        for (const auto& t : FuzzTargets()) {
            if (std::get<2>(t.second)) continue;
            std::cout << t.first << std::endl;
        }
        should_abort = true;
    }
    if (const char* out_path = std::getenv("WRITE_ALL_FUZZ_TARGETS_AND_ABORT")) {
        std::cout << "Writing all fuzz target names to '" << out_path << "'." << std::endl;
        std::ofstream out_stream{out_path, std::ios::binary};
        for (const auto& t : FuzzTargets()) {
            if (std::get<2>(t.second)) continue;
            out_stream << t.first << std::endl;
        }
        should_abort = true;
    }
    Assert(!should_abort);
    std::string_view fuzz_target{Assert(std::getenv("FUZZ"))};
    const auto it = FuzzTargets().find(fuzz_target);
    Assert(it != FuzzTargets().end());
    Assert(!g_test_one_input);
    g_test_one_input = &std::get<0>(it->second);
    std::get<1>(it->second)();
}

#if defined(PROVIDE_FUZZ_MAIN_FUNCTION)
static bool read_stdin(std::vector<uint8_t>& data)