if (num) { i = AvFILLp(av); /* Create extra elements */ /**/ slide = i > 0 ? i : 0; /**/ num += slide; av_extend(av, i + num); AvFILLp(av) += num; ary = AvARRAY(av); Move(ary, ary + num, i + 1, SV*); do { ary[--num] = &PL_sv_undef; } while (num); /* Make extra elements into a buffer */ /**/ AvMAX(av) -= slide; /**/ AvFILLp(av) -= slide; SvPVX(av) = (char*)(AvARRAY(av) + slide); } }