src/mid.cpp: In member function ‘virtual void CmidPlayer::rewind(int)’: src/mid.cpp:995:46: warning: comparison of integer expressions of different signedness: ‘long unsigned int’ and ‘long int’ [-Wsign-compare]
  995 |                     if (track[curtrack].tend > flen) // no music after end of file
      |                         ~~~~~~~~~~~~~~~~~~~~~^~~~~~
src/mid.cpp:1013:57: warning: comparison of integer expressions of different signedness: ‘size_t’ {aka ‘long unsigned int’} and ‘long int’ [-Wsign-compare]
 1013 |                     strnlen((char *)data + i, flen - i) < flen - i)
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
src/mid.cpp:1017:57: warning: comparison of integer expressions of different signedness: ‘size_t’ {aka ‘long unsigned int’} and ‘long int’ [-Wsign-compare]
 1017 |                     strnlen((char *)data + i, flen - i) < flen - i)
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
src/mid.cpp:1021:57: warning: comparison of integer expressions of different signedness: ‘size_t’ {aka ‘long unsigned int’} and ‘long int’ [-Wsign-compare]
 1021 |                     strnlen((char *)data + i, flen - i) < flen - i)
      |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~
src/mid.cpp:1108:62: warning: comparison of integer expressions of different signedness: ‘long unsigned int’ and ‘long int’ [-Wsign-compare]
 1108 |                 while (datalook(sierra_pos-2) != 0xff && pos < flen)
      |                                                          ~~~~^~~~~~