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core/state: Fix memory expansion bug by not copying clean objects

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This commit is contained in:
Nick Johnson 2016-09-19 07:56:23 +08:00
parent f970610c04
commit 581b320b9d
3 changed files with 8 additions and 5 deletions
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2
core/state/state_object.go
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@ -187,7 +187,7 @@ func (self *StateObject) Copy() *StateObject {
stateObject.codeHash = common.CopyBytes(self.codeHash)
stateObject.nonce = self.nonce
stateObject.trie = self.trie
stateObject.code = common.CopyBytes(self.code)
stateObject.code = self.code
stateObject.initCode = common.CopyBytes(self.initCode)
stateObject.storage = self.storage.Copy()
stateObject.remove = self.remove

6
core/state/state_test.go
View File

@ -149,10 +149,11 @@ func TestSnapshot2(t *testing.T) {
so0.balance = big.NewInt(42)
so0.nonce = 43
so0.SetCode([]byte{'c', 'a', 'f', 'e'})
so0.remove = true
so0.remove = false
so0.deleted = false
so0.dirty = false
so0.dirty = true
state.SetStateObject(so0)
state.Commit()
// and one with deleted == true
so1 := state.GetStateObject(stateobjaddr1)
@ -173,6 +174,7 @@ func TestSnapshot2(t *testing.T) {
state.Set(snapshot)
so0Restored := state.GetStateObject(stateobjaddr0)
so0Restored.GetState(storageaddr)
so1Restored := state.GetStateObject(stateobjaddr1)
// non-deleted is equal (restored)
compareStateObjects(so0Restored, so0, t)

5
core/state/statedb.go
View File

@ -324,7 +324,9 @@ func (self *StateDB) Copy() *StateDB {
state, _ := New(common.Hash{}, self.db)
state.trie = self.trie
for k, stateObject := range self.stateObjects {
state.stateObjects[k] = stateObject.Copy()
if stateObject.dirty {
state.stateObjects[k] = stateObject.Copy()
}
}
state.refund.Set(self.refund)
@ -364,7 +366,6 @@ func (s *StateDB) IntermediateRoot() common.Hash {
stateObject.Update()
s.UpdateStateObject(stateObject)
}
stateObject.dirty = false
}
}
return s.trie.Hash()