[v22.2.x] cloud_storage: check that we have serialized the whole manifest #6511
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It turns out that if the underlying buffer object throws (e.g. a bad_alloc exception), std::ostream swallows the exception and sets the "badbit". If we don't check it, this can lead to the serialized manifest being truncated and to corrupt manifests being uploaded to the cloud storage. To prevent that we check that std::ostream is in a good state after serializing manifests. More info: https://en.cppreference.com/w/cpp/io/ios_base/iostate (cherry picked from commit dbfc325)
mmedenjak
added
kind/bug
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Backport from pull request: #6507.