/in/foo.cc: In function 'int make()':
/in/foo.cc:25:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:28:17: warning: variable 'past' set but not used [-Wunused-but-set-variable]
   make();double past = 1.0;
                 ^~~~