diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/test/fuzz/versionbits.cpp | 42 |
1 files changed, 24 insertions, 18 deletions
diff --git a/src/test/fuzz/versionbits.cpp b/src/test/fuzz/versionbits.cpp index a898e2782d..88c1a1a9cb 100644 --- a/src/test/fuzz/versionbits.cpp +++ b/src/test/fuzz/versionbits.cpp @@ -25,18 +25,18 @@ private: const Consensus::Params dummy_params{}; public: - const int64_t m_begin = 0; - const int64_t m_end = 0; - const int m_period = 0; - const int m_threshold = 0; - const int m_bit = 0; + const int64_t m_begin; + const int64_t m_end; + const int m_period; + const int m_threshold; + const int m_bit; TestConditionChecker(int64_t begin, int64_t end, int period, int threshold, int bit) : m_begin{begin}, m_end{end}, m_period{period}, m_threshold{threshold}, m_bit{bit} { assert(m_period > 0); assert(0 <= m_threshold && m_threshold <= m_period); - assert(0 <= m_bit && m_bit <= 32 && m_bit < VERSIONBITS_NUM_BITS); + assert(0 <= m_bit && m_bit < 32 && m_bit < VERSIONBITS_NUM_BITS); } bool Condition(const CBlockIndex* pindex, const Consensus::Params& params) const override { return Condition(pindex->nVersion); } @@ -49,9 +49,10 @@ public: int GetStateSinceHeightFor(const CBlockIndex* pindexPrev) const { return AbstractThresholdConditionChecker::GetStateSinceHeightFor(pindexPrev, dummy_params, m_cache); } BIP9Stats GetStateStatisticsFor(const CBlockIndex* pindexPrev) const { return AbstractThresholdConditionChecker::GetStateStatisticsFor(pindexPrev, dummy_params); } - bool Condition(int64_t version) const + bool Condition(int32_t version) const { - return ((version >> m_bit) & 1) != 0 && (version & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS; + uint32_t mask = ((uint32_t)1) << m_bit; + return (((version & VERSIONBITS_TOP_MASK) == VERSIONBITS_TOP_BITS) && (version & mask) != 0); } bool Condition(const CBlockIndex* pindex) const { return Condition(pindex->nVersion); } @@ -94,18 +95,20 @@ public: } }; +std::unique_ptr<const CChainParams> g_params; + void initialize() { - SelectParams(CBaseChainParams::MAIN); + // this is actually comparatively slow, so only do it once + g_params = CreateChainParams(ArgsManager{}, CBaseChainParams::MAIN); + assert(g_params != nullptr); } -} // namespace -constexpr uint32_t MAX_TIME = 4102444800; // 2100-01-01 +constexpr uint32_t MAX_START_TIME = 4102444800; // 2100-01-01 FUZZ_TARGET_INIT(versionbits, initialize) { - const CChainParams& params = Params(); - + const CChainParams& params = *g_params; const int64_t interval = params.GetConsensus().nPowTargetSpacing; assert(interval > 1); // need to be able to halve it assert(interval < std::numeric_limits<int32_t>::max()); @@ -122,9 +125,9 @@ FUZZ_TARGET_INIT(versionbits, initialize) // too many blocks at 10min each might cause uint32_t time to overflow if // block_start_time is at the end of the range above - assert(std::numeric_limits<uint32_t>::max() - MAX_TIME > interval * max_blocks); + assert(std::numeric_limits<uint32_t>::max() - MAX_START_TIME > interval * max_blocks); - const int64_t block_start_time = fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(params.GenesisBlock().nTime, MAX_TIME); + const int64_t block_start_time = fuzzed_data_provider.ConsumeIntegralInRange<uint32_t>(params.GenesisBlock().nTime, MAX_START_TIME); // what values for version will we use to signal / not signal? const int32_t ver_signal = fuzzed_data_provider.ConsumeIntegral<int32_t>(); @@ -173,8 +176,10 @@ FUZZ_TARGET_INIT(versionbits, initialize) if (checker.Condition(ver_nosignal)) return; if (ver_nosignal < 0) return; - // TOP_BITS should ensure version will be positive + // TOP_BITS should ensure version will be positive and meet min + // version requirement assert(ver_signal > 0); + assert(ver_signal >= VERSIONBITS_LAST_OLD_BLOCK_VERSION); // Now that we have chosen time and versions, setup to mine blocks Blocks blocks(block_start_time, interval, ver_signal, ver_nosignal); @@ -203,7 +208,7 @@ FUZZ_TARGET_INIT(versionbits, initialize) } // don't risk exceeding max_blocks or times may wrap around - if (blocks.size() + period*2 > max_blocks) break; + if (blocks.size() + 2 * period > max_blocks) break; } // NOTE: fuzzed_data_provider may be fully consumed at this point and should not be used further @@ -316,7 +321,7 @@ FUZZ_TARGET_INIT(versionbits, initialize) assert(false); } - if (blocks.size() >= max_periods * period) { + if (blocks.size() >= period * max_periods) { // we chose the timeout (and block times) so that by the time we have this many blocks it's all over assert(state == ThresholdState::ACTIVE || state == ThresholdState::FAILED); } @@ -343,3 +348,4 @@ FUZZ_TARGET_INIT(versionbits, initialize) } } } +} // namespace |