compress.c:37:13: warning: no previous prototype for ‘zbx_compress_strerror’ [-Wmissing-prototypes]
 const char *zbx_compress_strerror(void)
 ^
compress.c:81:5: warning: no previous prototype for ‘zbx_compress’ [-Wmissing-prototypes]
 int zbx_compress(const char *in, size_t size_in, char **out, size_t *size_out)
 ^
compress.c: In function ‘zbx_compress’:
compress.c:86:64: warning: passing argument 2 of ‘compress’ from incompatible pointer type [-Wincompatible-pointer-types]
 if (Z_OK != (zbx_zlib_errno = compress((unsigned char *)*out, size_out, (const unsigned char *)in, size_in)))
 ^
In file included from compress.c:24:0:
/usr/include/zlib.h:1227:21: note: expected ‘uLongf * \{aka long unsigned int *}’ but argument is of type ‘size_t * \{aka unsigned int *}’
 ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
 ^
compress.c: At top level:
compress.c:110:5: warning: no previous prototype for ‘zbx_uncompress’ [-Wmissing-prototypes]
 int zbx_uncompress(const char *in, size_t size_in, char *out, size_t *size_out)
 ^
compress.c: In function ‘zbx_uncompress’:
compress.c:112:65: warning: passing argument 2 of ‘uncompress’ from incompatible pointer type [-Wincompatible-pointer-types]
 if (Z_OK != (zbx_zlib_errno = uncompress((unsigned char *)out, size_out, (const unsigned char *)in, size_in)))
 ^
In file included from compress.c:24:0:
/usr/include/zlib.h:1265:21: note: expected ‘uLongf * \{aka long unsigned int *}’ but argument is of type ‘size_t * \{aka unsigned int *}’
 ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
 ^