lib/zlib/deflate.c

230     if (version == Z_NULL || version[0] != my_version[0] ||
234     if (strm == Z_NULL) return Z_STREAM_ERROR;
236     strm->msg = Z_NULL;
266     if (s == Z_NULL) return Z_MEM_ERROR;
271     s->gzhead = Z_NULL;
293     if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
294         s->pending_buf == Z_NULL) {
321     if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||
358     if (strm == Z_NULL || strm->state == Z_NULL ||
364     strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
377         s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
379         adler32(0L, Z_NULL, 0);
393     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
405     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
421     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
460     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
499     if (strm == Z_NULL || strm->state == Z_NULL)
513         if (s->gzhead != Z_NULL) {          /* user-supplied gzip header */
514             if (s->gzhead->extra != Z_NULL)
517             if (str != Z_NULL)
522             if (str != Z_NULL)
589     if (strm == Z_NULL || strm->state == Z_NULL ||
608             strm->adler = crc32(0L, Z_NULL, 0);
612             if (s->gzhead == Z_NULL) {
627                             (s->gzhead->extra == Z_NULL ? 0 : 4) +
628                             (s->gzhead->name == Z_NULL ? 0 : 8) +
629                             (s->gzhead->comment == Z_NULL ? 0 : 16)
639                 if (s->gzhead->extra != Z_NULL) {
676             strm->adler = adler32(0L, Z_NULL, 0);
681         if (s->gzhead->extra != Z_NULL) {
709         if (s->gzhead->name != Z_NULL) {
740         if (s->gzhead->comment != Z_NULL) {
775                 strm->adler = crc32(0L, Z_NULL, 0);
898     if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
918     strm->state = Z_NULL;
940     if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
949     if (ds == Z_NULL) return Z_MEM_ERROR;
960     if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
961         ds->pending_buf == Z_NULL) {
1437                    (charf *)Z_NULL), \