std::error_code::error_code
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< cpp | error | error code
C++
Utilities library
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Diagnostics library
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std::error_code
| Member functions | ||||
error_code::error_code | ||||
| Modifiers | ||||
| Observers | ||||
| Non-member functions | ||||
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(until C++20)
(until C++20)
(C++20)
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| Helper classes | ||||
error_code() noexcept; |
(1) | (since C++11) |
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error_code(
int ec, const error_category& ecat )
noexcept
;
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(2) | (since C++11) |
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template
<
class ErrorCodeEnum >
error_code( ErrorCodeEnum e ) noexcept ; |
(3) | (since C++11) |
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error_code(
const error_code& other )
=
default
;
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(4) | (since C++11) (implicitly declared) |
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error_code( error_code&& other ) = default;
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(5) | (since C++11) (implicitly declared) |
Constructs new error code.
1) Constructs error code with default value. Equivalent to
error_code(
0, std::system_category
(
)
)
2) Constructs error code with ec as the platform-dependent error code and ecat as the corresponding error category
3) Constructs error code from an error code enum e. Equivalent to make_error_code(e), where
make_error_code is only found by argument-dependent lookup. This overload participates in overload resolution only if
std::is_error_code_enum
<ErrorCodeEnum>
::
value
is true
4,5) Implicitly defined copy constructor and move constructor. Initializes the error code with the contents of the other.
Parameters
| other | - | another error code to initialize with |
| ec | - | platform dependent error code to construct with |
| ecat | - | error category corresponding to ec |
| e | - | error code enum to construct with |
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 3629 | C++11 | only std::make_error_code overloads were used
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ADL-found overloads are used |
See also
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(C++11)
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creates error code value for errc enum e (function) |
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(C++11)
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constructs an iostream error code (function) |
| constructs a future error code (function) |