Graph_Set.c:99: warning: unused variable `best_map_info'
Graph_Set.c:98: warning: unused variable `status'
Plylne_abs.c:24: warning: control reaches end of non-void function
Plylne_abs.c:39: warning: control reaches end of non-void function
Polygn_abs.c:38: warning: type defaults to `int' in declaration of `i'
alloc.c:5: warning: type defaults to `int' in declaration of `num_alloc'
