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3a4e4f9914
Although the switch in `to_string(compaction_options::scrub::mode)`
covers all possible cases, gcc 10.3.1 warns about:
```
sstables/compaction.cc: In function ‘std::string_view sstables::to_string(sstables::compaction_options::scrub::mode)’:
sstables/compaction.cc:95:1: error: control reaches end of non-void function [-Werror=return-type]
```
Adding __builtin_unreachable(), as in `to_string(compaction_type)`
does calm the compiler down, but it might cause undefined behavior
in the future in case the switch won't cover all cases, or
the passed value is corrupt somehow.
Instead, call on_internal_error_noexcept to report the
error and abort if configure to do so, otherwise,
just return an "(invalid)" string.
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Message-Id: <20210727130251.2283068-1-bhalevy@scylladb.com>