#define UNW_FLAG_UHANDLER(x) ((x) & 0x0000000200000000LL)
#define UNW_LENGTH(x) ((x) & 0x00000000ffffffffLL)
-extern const unsigned char *unw_decode (const unsigned char *, int, void *);
+extern const unsigned char *unw_decode (const unsigned char *, int, void *, const unsigned char *);