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c8e7bd9a26
Prepare for making semaphore_timed_out derived from timed_out_error
in seastar. When this happens in seastar, we would need to catch
the derived, more-specific exception first to avoid the following
warning:
```
service/storage_proxy.cc:2818:18: error: exception of type 'seastar::semaphore_timed_out &' will be caught by earlier handler [-Werror,-Wexceptions]
} catch (semaphore_timed_out&) {
^
service/storage_proxy.cc:2815:18: note: for type 'seastar::timed_out_error &'
} catch (timed_out_error&) {
^
```
Later on, after the seastar change is applied to the scylla repo,
we can eliminate the duplication and catch only timed_out_error.
Test: unit(dev) (w/ the seastar changes to semaphore_timed_out
and rpc::timeout_error to inherit from timed_out_error).
Signed-off-by: Benny Halevy <bhalevy@scylladb.com>
Message-Id: <20210713132858.294504-1-bhalevy@scylladb.com>