std::make_error_condition(std::io_errc)
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std::io_errc
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make_error_condition(std::io_errc)
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Defined in header
<ios>
std::error_condition make_error_condition( std::io_errc e ) noexcept;
(since C++11)
Constructs an std::error_condition object from a value of type std::io_errc as if by return std::error_condition (static_cast<int>(e), std::iostream_category ()).
[edit] Parameters
e
-
error code number
[edit] Return value
A value of type std::error_condition that holds the error code number from e associated with the error category "iostream".
[edit] Example
Run this code
#include <iostream> #include <system_error> int main() { std::error_condition ec = std::make_error_condition (std::io_errc::stream ); std::cout << "error condition for io_errc::stream has value " << ec.value() << "\nand message \"" << ec.message() << "\"\n"; }
Output:
error condition for io_errc::stream has value 1 and message "unspecified iostream_category error"
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 2087 | C++11 | make_error_condition(io_errc) was not declared noexcept
|
declared noexcept |