18 Diagnostics library [diagnostics]

18.5 System error support [syserr]

18.5.3 Class error_­code [syserr.errcode]

18.5.3.2 Constructors [syserr.errcode.constructors]

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error_code() noexcept;
1
#
Effects: Constructs an object of type error_­code.
2
#
Ensures: val_­ == 0 and cat_­ == &system_­category().
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error_code(int val, const error_category& cat) noexcept;
3
#
Effects: Constructs an object of type error_­code.
4
#
Ensures: val_­ == val and cat_­ == &cat.
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template<class ErrorCodeEnum> error_code(ErrorCodeEnum e) noexcept;
5
#
Effects: Constructs an object of type error_­code.
6
#
Ensures: *this == make_­error_­code(e).
7
#
Remarks: This constructor shall not participate in overload resolution unless
is_­error_­code_­enum_­v<ErrorCodeEnum> is true.