va_list

/* unspecified */ va_list;

va_list is a complete object type suitable for holding the information needed by the macros va_start, va_copy, va_arg, and va_end.

If a va_list instance is created, passed to another function, and used via va_arg in that function, then any subsequent use in the calling function should be preceded by a call to va_end.

It is legal to pass a pointer to a va_list object to another function and then use that object after the function returns.

References

• C11 standard (ISO/IEC 9899:2011):
  • 7.16/3 Variable arguments <stdarg.h> (p: 269)
• C99 standard (ISO/IEC 9899:1999):
  • 7.15/3 Variable arguments <stdarg.h> (p: 249)
• C89/C90 standard (ISO/IEC 9899:1990):
  • 4.8 VARIABLE ARGUMENTS <stdarg.h>

See also