voidp            1067 lib/libz/zlib.h typedef voidp gzFile;
voidp            1107 lib/libz/zlib.h ZEXTERN int ZEXPORT    gzread  OF((gzFile file, voidp buf, unsigned len));
voidp             174 net/zlib.h         voidp      opaque;  /* private data object passed to zalloc and zfree */