The variables "[fReopenDebugLog](https://github.com/bitcoin/bitcoin/blob/fa24439ff3d8ab5b9efaf66ef4dae6713b88cb35/src/util.h#L53)" and "[fRequestShutdown](https://github.com/bitcoin/bitcoin/blob/fae78fa81802b5387054715c339f286ef436408e/src/init.cpp#L128)" should [use the data type "sig_atomic_t"](https://www.securecoding.cert.org/confluence/display/c/SIG31-C.+Do+not+access+shared+objects+in+signal+handlers) (instead of "bool").

I reported this issue for [another evolving software](https://github.com/Electric-Coin-Company/zcash/issues/678) before.

AddOneShot(strDest);
#if ENABLE_ZMQ
    pzmqNotificationInterface = CZMQNotificationInterface::CreateWithArguments(mapArgs);
    if (pzmqNotificationInterface) {
        RegisterValidationInterface(pzmqNotificationInterface);
    }
#endif
    if (mapArgs.count("-maxuploadtarget")) {
        CNode::SetMaxOutboundTarget(GetArg("-maxuploadtarget", DEFAULT_MAX_UPLOAD_TARGET)*1024*1024);
    }
    
    fReindex = GetBoolArg("-reindex", false);
    
    boost::filesystem::path blocksDir = GetDataDir() / "blocks";
    if (!boost::filesystem::exists(blocksDir))
    {
        boost::filesystem::create_directories(blocksDir);
        bool linked = false;
        for (unsigned int i = 1; i < 10000; i++) {
            boost::filesystem::path source = GetDataDir() / strprintf("blk%04u.dat", i);
            if (!boost::filesystem::exists(source)) break;
            boost::filesystem::path dest = blocksDir / strprintf("blk%05u.dat", i-1);
            try {
                boost::filesystem::create_hard_link(source, dest);
                LogPrintf("Hardlinked %s -> %s\n", source.string(), dest.string());
                linked = true;
            } catch (const boost::filesystem::filesystem_error& e) {
                
                
                LogPrintf("Error hardlinking blk%04u.dat: %s\n", i, e.what());