std::return_temporary_buffer (3) Linux Manual Page
std::return_temporary_buffer – std::return_temporary_buffer
Synopsis
Defined in header <memory>
template< class T > (deprecated in C++17)
void return_temporary_buffer( T* p ); (removed in C++20)
Deallocates storage previously allocated with std::get_temporary_buffer.
Parameters
p – the pointer previously returned by std::get_temporary_buffer and not invalidated by an earlier call to return_temporary_buffer
Return value
(none)
Exceptions (since C++17)
(none)
Example
// Run this code
#include <algorithm>
#include <iostream>
#include <memory>
#include <string>
#include <iterator>
int main()
{
const std::string s[] = {"string", "1", "test", "..."};
const auto p = std::get_temporary_buffer<std::string>(4);
// requires that p.first is passed to return_temporary_buffer
// (beware of early exit points and exceptions)
std::copy(s, s + p.second,
std::raw_storage_iterator<std::string *, std::string>(p.first));
// requires that each string in p is individually destroyed
// (beware of early exit points and exceptions)
std::copy(p.first, p.first + p.second,
std::ostream_iterator<std::string>{std::cout, "\n"});
std::for_each(p.first, p.first + p.second, [](std::string &e) {
e.~basic_string<char>();
});
std::return_temporary_buffer(p.first);
}
Output:
See also
get_temporary_buffer obtains uninitialized storage
(deprecated in C++17)
(removed in C++20)