Variable Argument List¶

printf-like¶

void my_printf(const char *fmt, ...)
{
    va_list list;

    va_start(list, fmt);
    vprintf_functions(fmt, list);
    va_end(list);
}

Type-checked against a format string. Enable by -Wformat

format (archetype, string-index, first-to-check)

Types: printf, scanf, strftime or strfmon. ms_printf, ms_strftime in mingw. gnu_xxx for glibc

extern int
my_printf (void *my_object, const char *my_format, ...)
      __attribute__ ((format (printf, 2, 3)));

member function in C++ have the this argument. So the index must be counted from 2.