--- a/libidav/utils.h Thu Mar 28 11:19:13 2019 +0100 +++ b/libidav/utils.h Thu Mar 28 11:54:27 2019 +0100 @@ -102,7 +102,7 @@ sstr_t util_readline(FILE *stream); char* util_password_input(char *prompt); -char* util_hexstr(unsigned char *data, size_t len); +char* util_hexstr(const unsigned char *data, size_t len); #ifdef __cplusplus }