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.

/**
 * Server/client environment: argument handling, config file parsing,
 * logging, thread wrappers
 */
#ifndef BITCOIN_UTIL_H
#define BITCOIN_UTIL_H
#if defined(HAVE_CONFIG_H)
#include "config/bitcoin-config.h"
#endif
#include "compat.h"
#include "tinyformat.h"
#include "utiltime.h"
#include <exception>
#include <map>
#include <stdint.h>
#include <string>
#include <vector>
#include <boost/filesystem/path.hpp>
#include <boost/signals2/signal.hpp>
#include <boost/thread/exceptions.hpp>
static const bool DEFAULT_LOGTIMEMICROS = false;
static const bool DEFAULT_LOGIPS        = false;
static const bool DEFAULT_LOGTIMESTAMPS = true;
class CTranslationInterface