/in/foo.cc: In function 'void dts::main()':
/in/foo.cc:165:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for (int i=0;i<end.rec.size();i++)
                              ~^~~~~~~~~~~~~~~
/in/foo.cc:161:27: warning: 'end.dts::sta::y1' may be used uninitialized in this function [-Wmaybe-uninitialized]
             if (end.x1!=ex||end.y1!=ey)
                 ~~~~~~~~~~^~~~~~~~~~~~
/in/foo.cc:161:13: warning: 'end.dts::sta::x1' may be used uninitialized in this function [-Wmaybe-uninitialized]
             if (end.x1!=ex||end.y1!=ey)
             ^~