extern int sprintf (/*@out@*/ char *s, /*@untainted@*/ char *format, ...)
/*@ensures s:taintedness = ...:taintedness@*/ ;
+extern int snprintf (/*@out@*/ char *s, size_t n, /*@untainted@*/ const char *format, ...)
+ /*@ensures s:taintedness = ...:taintedness@*/ ;
+
extern int vprintf (/*@untainted@*/ const char *format, va_list ap);
extern int vfprintf(FILE *stream, /*@untainted@*/ const char *format, va_list ap);
extern int vsprintf (/*@out@*/ char *str, /*@untainted@*/ const char *format, va_list ap)