builds but segfaults

minigeth/core/state/database.go

@@ -43,7 +43,7 @@ func (db *Database) ContractCodeSize(addrHash common.Hash, codeHash common.Hash)
 
 // OpenStorageTrie opens the storage trie of an account.
 func (db *Database) OpenStorageTrie(addrHash, root common.Hash) (Trie, error) {
-	return simpleTrie{}, nil
+	return SimpleTrie{}, nil
 }
 
 type LeafCallback func(paths [][]byte, hexpath []byte, leaf []byte, parent common.Hash) error
@@ -73,28 +73,28 @@ type Trie interface {
 	Commit(onleaf LeafCallback) (common.Hash, error)
 }
 
-type simpleTrie struct {
+type SimpleTrie struct {
 	BlockNumber *big.Int
 	StateRoot   common.Hash
 }
 
-func (trie simpleTrie) Commit(onleaf LeafCallback) (common.Hash, error) {
+func (trie SimpleTrie) Commit(onleaf LeafCallback) (common.Hash, error) {
 	return trie.StateRoot, nil
 }
 
-func (trie simpleTrie) Hash() common.Hash {
+func (trie SimpleTrie) Hash() common.Hash {
 	return trie.StateRoot
 }
 
-func (trie simpleTrie) TryUpdate(key, value []byte) error {
+func (trie SimpleTrie) TryUpdate(key, value []byte) error {
 	return nil
 }
 
-func (trie simpleTrie) TryDelete(key []byte) error {
+func (trie SimpleTrie) TryDelete(key []byte) error {
 	return nil
 }
 
-func (trie simpleTrie) TryGet(key []byte) ([]byte, error) {
+func (trie SimpleTrie) TryGet(key []byte) ([]byte, error) {
 	address := common.BytesToAddress(key)
 	addrHash := crypto.Keccak256Hash(address[:])
 	unhashMap[addrHash] = address

minigeth/core/state/statedb.go

@@ -18,6 +18,11 @@ var (
 	emptyRoot = common.HexToHash("56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421")
 )
 
+type revision struct {
+	id           int
+	journalIndex int
+}
+
 type StateDB struct {
 	db           Database
 	prefetcher   *triePrefetcher
@@ -81,7 +86,7 @@ func NewStateDB(header types.Header) *StateDB {
 		stateObjectsDirty:   make(map[common.Address]struct{}),
 		stateRoot:           header.Root,
 		db:                  Database{BlockNumber: header.Number, StateRoot: header.Root},
-		trie:                Trie{BlockNumber: header.Number, StateRoot: header.Root},
+		trie:                SimpleTrie{BlockNumber: header.Number, StateRoot: header.Root},
 		accessList:          newAccessList(),
 		logs:                make(map[common.Hash][]*types.Log),
 	}