std::make_error_code(std::io_errc) (3) Linux Manual Page

std::make_error_code(std::io_errc) – std::make_error_code(std::io_errc)

Synopsis

Defined in header <ios>
std::error_code make_error_code( std::io_errc e ) noexcept; (since C++11)
Constructs an std::error_code object from a value of type std::io_errc as if by return std::error_code(static_cast<int>(e), std::iostream_category()). This function is called by the constructor of std::error_code when given an std::io_errc argument.

Parameters

e – error code number

Return value

A value of type std::error_code that holds the error code number from e associated with the error category "iostream".

Example

// Run this code

#include <iostream>

#include <system_error>

int main()

{
    std::error_code ec = std::make_error_code(std::io_errc::stream);
    std::cout << "Error code from io_errc::stream has category "
              << ec.category().name() << '\n';
}

Output:

  Error code from io_errc::stream has category iostream

See also

error_code holds a platform-dependent error code
           (class)
(C++11)
io_errc the IO stream error codes
           (enum)
(C++11)