This header was originally in the C standard library as<stdarg.h>.
This header provides support forC-style variadic functions, while theC definition of "default argument promotions" is replaced with theC++ definition.
Types | ||
| holds the information needed byva_start,va_arg,va_end, andva_copy (typedef)[edit] | ||
Macros | ||
| enables access to variadic function arguments (function macro)[edit] | ||
| accesses the next variadic function argument (function macro)[edit] | ||
(C++11) | makes a copy of the variadic function arguments (function macro)[edit] | |
| ends traversal of the variadic function arguments (function macro)[edit] | ||
namespace std{usingva_list=/*see description*/;}#define va_arg(V, P) /*see description*/#define va_copy(VDST, VSRC) /*see description*/#define va_end(V) /*see description*/#define va_start(V, P) /*see description*/
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| CWG 2645 | C++98 | C++ defines "default argument promotions", but its C definition was used | the C++ definition overrides the C definition |
