Snippets for log4cplus 2.1.2 from Alpine aarch64

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-aarch64/main/log4cplus/log4cplus-2.1.2-r0.log.

• src/asyncappender.cxx:56:1: warning: 'log4cplus::{anonymous}::QueueThread::QueueThread(log4cplus::AsyncAppenderPtr, log4cplus::thread::QueuePtr)' defined but not used [-Wunused-function]
     56 | QueueThread::QueueThread (AsyncAppenderPtr aai, thread::QueuePtr q)
        | ^~~~~~~~~~~
  

• ./threadpool/ThreadPool.h:276:50: warning: declaration of 'std::unique_lock<std::mutex> lock' shadows a parameter [-Wshadow]
    276 |                     std::unique_lock<std::mutex> lock(this->queue_mutex);
        |                                                  ^~~~
  

• ./threadpool/ThreadPool.h:312:50: warning: declaration of 'std::unique_lock<std::mutex> lock' shadows a parameter [-Wshadow]
    312 |                     std::unique_lock<std::mutex> lock(this->queue_mutex);
        |                                                  ^~~~
  

• ./threadpool/ThreadPool.h:262:68: warning: unused parameter 'lock' [-Wunused-parameter]
  

• src/fileappender.cxx:702:1: warning: 'log4cplus::helpers::Time log4cplus::{anonymous}::adjust_for_time_zone(const log4cplus::helpers::Time&, const std::chrono::seconds&)' defined but not used [-Wunused-function]
    702 | adjust_for_time_zone (Time const & t, std::chrono::seconds const & tzoffset)
        | ^~~~~~~~~~~~~~~~~~~~
  

• src/fileappender.cxx:686:1: warning: 'std::chrono::seconds log4cplus::{anonymous}::local_time_offset(const log4cplus::helpers::Time&)' defined but not used [-Wunused-function]
    686 | local_time_offset (Time const & t)
        | ^~~~~~~~~~~~~~~~~
  

• src/property.cxx:140:35: warning: unused parameter 'file' [-Wunused-parameter]
    140 | imbue_file_from_flags (tistream & file, unsigned flags)
        |                        ~~~~~~~~~~~^~~~
  

• tests/unit_tests/unit_tests.cxx:4:11: warning: unused parameter 'argc' [-Wunused-parameter]
      4 | main (int argc, char* argv[])
        |       ~~~~^~~~
  

• tests/unit_tests/unit_tests.cxx:4:23: warning: unused parameter 'argv' [-Wunused-parameter]
      4 | main (int argc, char* argv[])
        |                 ~~~~~~^~~~~~