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index: Fix backwards search for bestblock

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This allows filters to be reconstructed when the best known block is
the Genesis block without needing to reindex.
It fixes Init errors seen in #23289.
This commit is contained in:
Martin Zumsande 2021-10-26 22:25:04 +02:00
parent 111c3e06b3
commit 698c524698
1 changed files with 2 additions and 1 deletions
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3
src/index/base.cpp
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@ -91,11 +91,12 @@ bool BaseIndex::Init()
const CBlockIndex* block = active_chain.Tip();
prune_violation = true;
// check backwards from the tip if we have all block data until we reach the indexes bestblock
while (block_to_test && block->pprev && (block->pprev->nStatus & BLOCK_HAVE_DATA)) {
while (block_to_test && block && (block->nStatus & BLOCK_HAVE_DATA)) {
if (block_to_test == block) {
prune_violation = false;
break;
}
assert(block->pprev);
block = block->pprev;
}
}