diff --git a/src/appender.cxx b/src/appender.cxx
index efd3702c3..ec967ff22 100644
--- a/src/appender.cxx
+++ b/src/appender.cxx
@@ -30,6 +30,7 @@
 #include <log4cplus/thread/syncprims-pub-impl.h>
 #include <memory>
 #include <stdexcept>
+#include <utility>
 
 
 namespace log4cplus
@@ -120,6 +121,7 @@ Appender::Appender(const log4cplus::helpers::Properties & properties)
                 LOG4CPLUS_TEXT("Cannot find LayoutFactory: \"")
                 + factoryName
                 + LOG4CPLUS_TEXT("\""), true);
+            std::unreachable();
         }
 
         helpers::Properties layoutProperties =
@@ -130,6 +132,7 @@ Appender::Appender(const log4cplus::helpers::Properties & properties)
                 helpers::getLogLog().error(
                     LOG4CPLUS_TEXT("Failed to create Layout: ")
                     + factoryName, true);
+                std::unreachable();
             }
             else {
                 layout = std::move(newLayout);
@@ -139,6 +142,7 @@ Appender::Appender(const log4cplus::helpers::Properties & properties)
             helpers::getLogLog().error(
                 LOG4CPLUS_TEXT("Error while creating Layout: ")
                 + LOG4CPLUS_C_STR_TO_TSTRING(e.what()), true);
+            std::unreachable();
         }
 
     }
@@ -167,6 +171,7 @@ Appender::Appender(const log4cplus::helpers::Properties & properties)
             helpers::getLogLog().error(
                 LOG4CPLUS_TEXT("Appender::ctor()- Cannot find FilterFactory: ")
                 + factoryName, true);
+            std::unreachable();
         }
         spi::FilterPtr tmpFilter = factory->createObject (
             filterProps.getPropertySubset(filterName + LOG4CPLUS_TEXT(".")));
@@ -175,6 +180,7 @@ Appender::Appender(const log4cplus::helpers::Properties & properties)
             helpers::getLogLog().error(
                 LOG4CPLUS_TEXT("Appender::ctor()- Failed to create filter: ")
                 + filterName, true);
+            std::unreachable();
         }
         addFilter (std::move (tmpFilter));
     }
diff --git a/src/asyncappender.cxx b/src/asyncappender.cxx
index 5de605871..ddb3da25c 100644
--- a/src/asyncappender.cxx
+++ b/src/asyncappender.cxx
@@ -24,6 +24,8 @@
 #include <log4cplus/config.hxx>
 #ifndef LOG4CPLUS_SINGLE_THREADED
 
+#include <utility>
+
 #include <log4cplus/asyncappender.h>
 #include <log4cplus/spi/factory.h>
 #include <log4cplus/helpers/loglog.h>
@@ -119,6 +121,7 @@ AsyncAppender::AsyncAppender (helpers::Properties const & props)
             LOG4CPLUS_TEXT ("AsyncAppender::AsyncAppender()")
             LOG4CPLUS_TEXT (" - Cannot find AppenderFactory: ")
             + appender_name, true);
+        std::unreachable ();
     }
 
     helpers::Properties appender_props = props.getPropertySubset (
diff --git a/src/env.cxx b/src/env.cxx
index a9d33c69e..8c1cf5ff6 100644
--- a/src/env.cxx
+++ b/src/env.cxx
@@ -58,7 +58,7 @@
 #include <functional>
 #include <stdexcept>
 #include <memory>
-
+#include <utility>
 
 namespace log4cplus::internal {
 
@@ -340,10 +340,13 @@ get_current_dir ()
             if (eno == ERANGE)
                 buf_size *= 2;
             else
+            {
                 helpers::getLogLog ().error (
                     LOG4CPLUS_TEXT ("getcwd: ")
                     + helpers::convertIntegerToString (eno),
                     true);
+                std::unreachable();
+            }
         }
     }
     while (! ret);
diff --git a/src/lockfile.cxx b/src/lockfile.cxx
index b5bd418aa..7899f95e4 100644
--- a/src/lockfile.cxx
+++ b/src/lockfile.cxx
@@ -53,6 +53,7 @@
 #include <cerrno>
 #include <limits>
 #include <cstring>
+#include <utility>
 
 #include <log4cplus/helpers/lockfile.h>
 #include <log4cplus/helpers/stringhelper.h>
@@ -225,16 +226,22 @@ LockFile::open (int open_flags) const
 #  else
 #    error "Neither _tsopen_s() nor _tsopen() is available."
 #  endif
+    {
         getLogLog ().error (tstring (LOG4CPLUS_TEXT("could not open or create file "))
             + lock_file_name, true);
+        std::unreachable ();
+    }
 
 #elif defined (LOG4CPLUS_USE_POSIX_LOCKING)
     data->fd = ::open (LOG4CPLUS_TSTRING_TO_STRING (lock_file_name).c_str (),
         open_flags, OPEN_MODE);
     if (data->fd == -1)
+    {
         getLogLog ().error (
             tstring (LOG4CPLUS_TEXT ("could not open or create file "))
             + lock_file_name, true);
+        std::unreachable ();
+    }
 
 #if ! defined (O_CLOEXEC)
     if (! trySetCloseOnExec (data->fd))
@@ -301,8 +308,11 @@ LockFile::lock () const
         fl.l_len = 0;
         ret = fcntl (data->fd, F_SETLKW, &fl);
         if (ret == -1 && errno != EINTR)
+        {
             getLogLog ().error (tstring (LOG4CPLUS_TEXT("fcntl(F_SETLKW) failed: "))
                 + convertIntegerToString (errno), true);
+            std::unreachable ();
+        }
     }
     while (ret == -1);
 
@@ -354,8 +364,11 @@ void LockFile::unlock () const
     fl.l_len = 0;
     ret = fcntl (data->fd, F_SETLKW, &fl);
     if (ret != 0)
+    {
         getLogLog ().error (tstring (LOG4CPLUS_TEXT("fcntl(F_SETLKW) failed: "))
             + convertIntegerToString (errno), true);
+        std::unreachable ();
+    }
 
 #elif defined (LOG4CPLUS_USE_LOCKF)
     ret = lockf (data->fd, F_ULOCK, 0);
diff --git a/src/timehelper.cxx b/src/timehelper.cxx
index 663f1d71f..b16a6a756 100644
--- a/src/timehelper.cxx
+++ b/src/timehelper.cxx
@@ -27,6 +27,7 @@
 #include <algorithm>
 #include <vector>
 #include <iomanip>
+#include <utility>
 #include <cassert>
 #include <cerrno>
 #if defined (UNICODE)
@@ -304,6 +305,7 @@ getFormattedTime(const log4cplus::tstring& fmt_orig,
                 LogLog::getLogLog ()->error (
                     LOG4CPLUS_TEXT("Error in strftime(): ")
                     + convertIntegerToString (eno), true);
+                std::unreachable();
             }
         }
     }