Added is_fatal_error

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.37%. Comparing base (60eb2b6) to head (f499a9e).

Additional details and impacted files

[](https://app.codecov.io/gh/boostorg/mysql/pull/256?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) ```diff @@ Coverage Diff @@ ## develop #256 +/- ## ======================================== Coverage 98.37% 98.37% ======================================== Files 129 130 +1 Lines 6325 6344 +19 ======================================== + Hits 6222 6241 +19 Misses 103 103 ``` | [Files](https://app.codecov.io/gh/boostorg/mysql/pull/256?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) | Coverage Δ | | |---|---|---| | [include/boost/mysql/impl/is\_fatal\_error.ipp](https://app.codecov.io/gh/boostorg/mysql/pull/256?src=pr&el=tree&filepath=include%2Fboost%2Fmysql%2Fimpl%2Fis_fatal_error.ipp&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg#diff-aW5jbHVkZS9ib29zdC9teXNxbC9pbXBsL2lzX2ZhdGFsX2Vycm9yLmlwcA==) | `100.00% <100.00%> (ø)` | | ------ [Continue to review full report in Codecov by Sentry](https://app.codecov.io/gh/boostorg/mysql/pull/256?dropdown=coverage&src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). > **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg) > `Δ = absolute (impact)`, `ø = not affected`, `? = missing data` > Powered by [Codecov](https://app.codecov.io/gh/boostorg/mysql/pull/256?dropdown=coverage&src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). Last update [60eb2b6...f499a9e](https://app.codecov.io/gh/boostorg/mysql/pull/256?dropdown=coverage&src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=boostorg).