/in/foo.cc: In function 'void work()':
/in/foo.cc:108:27: warning: variable 'tmpy' set but not used [-Wunused-but-set-variable]
             int tmpx = x, tmpy, tmp;
                           ^~~~
/in/foo.cc:124:17: warning: unused variable 'tmpx' [-Wunused-variable]
             int tmpx, tmpy = y, tmp;
                 ^~~~