22 Diagnostics library [diagnostics]

22.5 System error support [syserr]

22.5.4 Class error_­condition [syserr.errcondition]

22.5.4.2 Class error_­condition constructors [syserr.errcondition.constructors]

error_condition() noexcept;
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Effects: Constructs an object of type error_­condition.
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Postconditions: val_­ == 0 and cat_­ == &generic_­category().
error_condition(int val, const error_category& cat) noexcept;
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Effects: Constructs an object of type error_­condition.
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Postconditions: val_­ == val and cat_­ == &cat.
template <class ErrorConditionEnum> error_condition(ErrorConditionEnum e) noexcept;
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Effects: Constructs an object of type error_­condition.
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Postconditions: *this == make_­error_­condition(e).
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Remarks: This constructor shall not participate in overload resolution unless
is_­error_­condition_­enum_­v<ErrorConditionEnum> is true.