/in/foo.cc: In function 'int buildh(int, int, int)':
/in/foo.cc:29:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int builds(int, int, int)':
/in/foo.cc:39:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^