/in/foo.cc: In function 'int main()':
/in/foo.cc:60:7: warning: 'mq' may be used uninitialized in this function [-Wmaybe-uninitialized]
   int mq;
       ^~
/in/foo.cc:30:7: warning: 'mq' may be used uninitialized in this function [-Wmaybe-uninitialized]
   int mq;
       ^~