[validation] Crash if disconnecting a block fails #2251
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If we're unable to disconnect a block during normal operation, then that is a failure of our local system (such as disk failure) or the chain that we are on (eg CVE-2018-17144), but cannot be due to failure of the (more work) chain that we're trying to validate. We should abort rather than stay on a less work chain.
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Fuzzbawls
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Apr 9, 2021
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Coming from upstream bitcoin#15305 with some adaptations.