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 (p: 269)
C99 standard (ISO/IEC 9899:1999):
- 7.15/3 Variable arguments (p: 249)
C89/C90 standard (ISO/IEC 9899:1990):
- 4.8 VARIABLE ARGUMENTS
See also
| accesses the next variadic function argument (function macro) | |
|
(C99) |
makes a copy of the variadic function arguments (function macro) |
| ends traversal of the variadic function arguments (function macro) | |
| enables access to variadic function arguments (function macro) |
© cppreference.com
Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.
http://en.cppreference.com/w/c/variadic/va_list
