51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
-extern int hex2bin(const char *src, void *dst, int length);
-extern int bin2hex(const void *src, char *dst, int length);
+int hex2bin(const char *src, void *dst, int length);
+int bin2hex(const void *src, char *dst, int length);
-extern int b64encode(const void *src, char *dst, int length);
-extern int b64encode_urlsafe(const void *src, char *dst, int length);
-extern int b64decode(const char *src, void *dst, int length);
+int b64encode(const void *src, char *dst, int length);
+int b64encode_urlsafe(const void *src, char *dst, int length);
+int b64decode(const char *src, void *dst, int length);
#ifdef HAVE_MINGW
-extern const char *winerror(int);
+const char *winerror(int);
#define strerror(x) ((x)>0?strerror(x):winerror(GetLastError()))
#define sockerrno WSAGetLastError()
#define sockstrerror(x) winerror(x)
#define sockinuse(x) ((x) == EADDRINUSE)
#endif
-extern unsigned int bitfield_to_int(const void *bitfield, size_t size);
+unsigned int bitfield_to_int(const void *bitfield, size_t size) __attribute__((__warn_unused_result__));
#endif