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2806. Base class of bad_optional_access

Section: 22.5.5 [optional.bad.access] Status: C++17 Submitter: Great Britain Opened: 2016-11-09 Last modified: 2017-07-30

Priority: 1

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Addresses GB 49

LEWG 72 suggests changing the base class of std::bad_optional_access, but the issue appears to have been forgotten.

Proposed change:

Address LEWG issue 72, either changing it for C++17 or closing the issue.

[Issues Telecon 16-Dec-2016]

Priority 1; Marshall provides wording

Not the most important bug in the world, but we can't change it after we ship C++17, hence the P1.

[Kona 2017-03-01]

Accepted as Immediate to resolve NB comment.

Proposed resolution:

Changes are relative to N4604.

In the class synopsis in 20.6.5 [optional.bad_optional_access] change:

    class bad_optional_access : public exceptionlogic_error {