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Add CCoinsViewCache::SanityCheck() and use it in fuzz test

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This commit is contained in:
Pieter Wuille
2023-02-01 18:28:08 -05:00
parent 3c9cea1340
commit b0ff310840
3 changed files with 28 additions and 1 deletions
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17
src/coins.cpp
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@@ -314,6 +314,23 @@ void CCoinsViewCache::ReallocateCache()
::new (&cacheCoins) CCoinsMap();
}
void CCoinsViewCache::SanityCheck() const
{
size_t recomputed_usage = 0;
for (const auto& [_, entry] : cacheCoins) {
unsigned attr = 0;
if (entry.flags & CCoinsCacheEntry::DIRTY) attr |= 1;
if (entry.flags & CCoinsCacheEntry::FRESH) attr |= 2;
if (entry.coin.IsSpent()) attr |= 4;
// Only 5 combinations are possible.
assert(attr != 2 && attr != 4 && attr != 7);
// Recompute cachedCoinsUsage.
recomputed_usage += entry.coin.DynamicMemoryUsage();
}
assert(recomputed_usage == cachedCoinsUsage);
}
static const size_t MIN_TRANSACTION_OUTPUT_WEIGHT = WITNESS_SCALE_FACTOR * ::GetSerializeSize(CTxOut(), PROTOCOL_VERSION);
static const size_t MAX_OUTPUTS_PER_BLOCK = MAX_BLOCK_WEIGHT / MIN_TRANSACTION_OUTPUT_WEIGHT;