lib/libz/deflate.c

233     if (version == Z_NULL || version[0] != my_version[0] ||
237     if (strm == Z_NULL) return Z_STREAM_ERROR;
239     strm->msg = Z_NULL;
278     if (s == Z_NULL) return Z_MEM_ERROR;
283     s->gzhead = Z_NULL;
305     if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
306         s->pending_buf == Z_NULL) {
334     if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL)
397     if (strm == Z_NULL || strm->state == Z_NULL ||
403     strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
416         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
418         adler32(0L, Z_NULL, 0);
443     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
455     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
456     if (pending != Z_NULL)
458     if (bits != Z_NULL)
472     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
499     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
540     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
579     if (strm == Z_NULL || strm->state == Z_NULL)
593         if (s->gzhead != Z_NULL) {          /* user-supplied gzip header */
594             if (s->gzhead->extra != Z_NULL)
597             if (str != Z_NULL)
602             if (str != Z_NULL)
672     if (strm == Z_NULL || strm->state == Z_NULL ||
678     if (strm->next_out == Z_NULL ||
679         (strm->next_in == Z_NULL && strm->avail_in != 0) ||
693             strm->adler = crc32(0L, Z_NULL, 0);
697             if (s->gzhead == Z_NULL) {
712                             (s->gzhead->extra == Z_NULL ? 0 : 4) +
713                             (s->gzhead->name == Z_NULL ? 0 : 8) +
714                             (s->gzhead->comment == Z_NULL ? 0 : 16)
724                 if (s->gzhead->extra != Z_NULL) {
761             strm->adler = adler32(0L, Z_NULL, 0);
766         if (s->gzhead->extra != Z_NULL) {
794         if (s->gzhead->name != Z_NULL) {
825         if (s->gzhead->comment != Z_NULL) {
860                 strm->adler = crc32(0L, Z_NULL, 0);
984     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
1004     strm->state = Z_NULL;
1026     if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
1035     if (ds == Z_NULL) return Z_MEM_ERROR;
1046     if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
1047         ds->pending_buf == Z_NULL) {
1541                    (charf *)Z_NULL), \