* Stores the result in *val and returns the number of input bytes read (or 0
* if the input is invalid, in which case *val is undefined).
*/
-size_t upkg_decode_index(long *val, unsigned char *bytes, size_t n)
+size_t upkg_decode_index(long *val, const unsigned char *bytes, size_t n)
{
*val = 0;
long upkg_export_tell(struct upkg_file *f);
void upkg_export_close(struct upkg_file *f);
-size_t upkg_decode_index(long *val, unsigned char *bytes, size_t n);
+size_t upkg_decode_index(long *val, const unsigned char *bytes, size_t n);
#endif