sizeofdst
Sizeofdst is a term used in programming to refer to the size of a destination buffer used when performing copy operations. It is not a standard language feature but a convention in some codebases to describe the maximum number of bytes that can be written to a destination without overflowing. In practice, sizeofdst is often realized as a macro or helper that yields the size of a fixed-size array intended as the destination.
In C and C++, a common pattern defines a macro such as sizeofdst(x) that expands to the
The macro is typically used with safe copying functions that take the destination size as a parameter,
Limitations include the potential for misusing sizeofdst on function parameters that decay into pointers, or on
See also: buffer overflow, safe string handling, strlcpy, std::size, array size macro.