func: void dfacomp(const char *s,size_t len,struct dfa *d,int searchflag) dfaanalyze ( d , searchflag ); void dfaanalyze(struct dfa *d,int searchflag) int * nullable ; int * o_nullable ; d -> searchflag = searchflag; nullable = ( ( sizeof ( ( * nullable ) ) == 1 ? xmalloc ( d -> depth ) : xnmalloc ( d -> depth , sizeof ( ( * nullable ) ) ) ) ); while ( 0 )  o_nullable = nullable; free ( o_nullable ); 