This header was originally in the C standard library as <stdarg.h>.
This header provides support for C-style variadic functions, while the C definition of "default argument promotions" is replaced with the C++ definition.
Types |
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holds the information needed by va_start, va_arg, va_end, and va_copy (typedef) |
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Macros |
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| enables access to variadic function arguments (function macro) |
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| accesses the next variadic function argument (function macro) |
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(C++11) | makes a copy of the variadic function arguments (function macro) |
| ends traversal of the variadic function arguments (function macro) |
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namespace std {
using va_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 |
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