#include <stdio.h>
-void qword_add(char **bpp, int *lp, char *str);
+void qword_add(char **bpp, int *lp, const char *str);
void qword_addhex(char **bpp, int *lp, char *buf, int blen);
void qword_addint(char **bpp, int *lp, int n);
void qword_adduint(char **bpp, int *lp, unsigned int n);
void qword_addeol(char **bpp, int *lp);
-int qword_print(FILE *f, char *str);
+int qword_print(FILE *f, const char *str);
int qword_printhex(FILE *f, char *str, int slen);
void qword_printint(FILE *f, int num);
int qword_eol(FILE *f);