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core: repro #18977

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This commit is contained in:
Martin Holst Swende
2019-02-04 11:54:39 +01:00
parent 18f702faf7
commit 3ab9dcc3bd
2 changed files with 104 additions and 1 deletions
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57
core/chain_makers.go
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@ -48,6 +48,8 @@ type BlockGen struct {
engine consensus.Engine
}
type headerGenFn func(chain consensus.ChainReader, parent *types.Block, state *state.StateDB, engine consensus.Engine) *types.Header
// SetCoinbase sets the coinbase of the generated block.
// It can be called at most once.
func (b *BlockGen) SetCoinbase(addr common.Address) {
@ -170,6 +172,10 @@ func (b *BlockGen) OffsetTime(seconds int64) {
// values. Inserting them into BlockChain requires use of FakePow or
// a similar non-validating proof of work implementation.
func GenerateChain(config *params.ChainConfig, parent *types.Block, engine consensus.Engine, db ethdb.Database, n int, gen func(int, *BlockGen)) ([]*types.Block, []types.Receipts) {
return generateChain(config, parent, engine, db, n, gen, makeHeader)
}
func generateChain(config *params.ChainConfig, parent *types.Block, engine consensus.Engine, db ethdb.Database, n int, gen func(int, *BlockGen), headerGen headerGenFn) ([]*types.Block, []types.Receipts) {
if config == nil {
config = params.TestChainConfig
}
@ -177,7 +183,8 @@ func GenerateChain(config *params.ChainConfig, parent *types.Block, engine conse
chainreader := &fakeChainReader{config: config}
genblock := func(i int, parent *types.Block, statedb *state.StateDB) (*types.Block, types.Receipts) {
b := &BlockGen{i: i, chain: blocks, parent: parent, statedb: statedb, config: config, engine: engine}
b.header = makeHeader(chainreader, parent, statedb, b.engine)
//b.header = makeHeader(chainreader, parent, statedb, b.engine)
b.header = headerGen(chainreader, parent, statedb, b.engine)
// Mutate the state and block according to any hard-fork specs
if daoBlock := config.DAOForkBlock; daoBlock != nil {
@ -248,6 +255,54 @@ func makeHeader(chain consensus.ChainReader, parent *types.Block, state *state.S
}
}
func makeHeaderWithLargeDifficulty(chain consensus.ChainReader, parent *types.Block, state *state.StateDB, engine consensus.Engine) *types.Header {
var time *big.Int
if parent.Time() == nil {
time = big.NewInt(1)
} else {
time = new(big.Int).Add(parent.Time(), big.NewInt(1)) // block time is fixed at 10 seconds
}
return &types.Header{
Root: state.IntermediateRoot(chain.Config().IsEIP158(parent.Number())),
ParentHash: parent.Hash(),
Coinbase: parent.Coinbase(),
Difficulty: engine.CalcDifficulty(chain, time.Uint64(), &types.Header{
Number: parent.Number(),
Time: new(big.Int).Sub(time, big.NewInt(1)),
Difficulty: parent.Difficulty(),
UncleHash: parent.UncleHash(),
}),
GasLimit: CalcGasLimit(parent, parent.GasLimit(), parent.GasLimit()),
Number: new(big.Int).Add(parent.Number(), common.Big1),
Time: time,
}
}
func makeHeaderWithSmallDifficulty(chain consensus.ChainReader, parent *types.Block, state *state.StateDB, engine consensus.Engine) *types.Header {
var time *big.Int
if parent.Time() == nil {
time = big.NewInt(30)
} else {
time = new(big.Int).Add(parent.Time(), big.NewInt(30)) // block time is fixed at 10 seconds
}
return &types.Header{
Root: state.IntermediateRoot(chain.Config().IsEIP158(parent.Number())),
ParentHash: parent.Hash(),
Coinbase: parent.Coinbase(),
Difficulty: engine.CalcDifficulty(chain, time.Uint64(), &types.Header{
Number: parent.Number(),
Time: new(big.Int).Sub(time, big.NewInt(30)),
Difficulty: parent.Difficulty(),
UncleHash: parent.UncleHash(),
}),
GasLimit: CalcGasLimit(parent, parent.GasLimit(), parent.GasLimit()),
Number: new(big.Int).Add(parent.Number(), common.Big1),
Time: time,
}
}
// makeHeaderChain creates a deterministic chain of headers rooted at parent.
func makeHeaderChain(parent *types.Header, n int, engine consensus.Engine, db ethdb.Database, seed int) []*types.Header {
blocks := makeBlockChain(types.NewBlockWithHeader(parent), n, engine, db, seed)