Merge pull request #4892

e982b57 Use explicit fflush() instead of setvbuf() (Adam Weiss)

src/init.cpp

@@ -630,7 +630,6 @@ bool AppInit2(boost::thread_group& threadGroup)
     fPrintToConsole = GetBoolArg("-printtoconsole", false);
     fLogTimestamps = GetBoolArg("-logtimestamps", true);
     fLogIPs = GetBoolArg("-logips", false);
-    setvbuf(stdout, NULL, _IOLBF, 0);
 #ifdef ENABLE_WALLET
     bool fDisableWallet = GetBoolArg("-disablewallet", false);
 #endif

src/util.cpp

@@ -211,6 +211,7 @@ int LogPrintStr(const std::string &str)
     {
         // print to console
         ret = fwrite(str.data(), 1, str.size(), stdout);
+        fflush(stdout);
     }
     else if (fPrintToDebugLog && AreBaseParamsConfigured())
     {