Z_BLOCK           443 third_party/zlib/deflate.c         err = deflate(strm, Z_BLOCK);
Z_BLOCK           596 third_party/zlib/deflate.c         flush > Z_BLOCK || flush < 0) {
Z_BLOCK           866 third_party/zlib/deflate.c             } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
Z_BLOCK           811 third_party/zlib/inflate.c             if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;