bbc4ea4ae8
The run loop, which previously contained custom opcode executes have been removed and has been simplified to a few checks. Each operation consists of 4 elements: execution function, gas cost function, stack validation function and memory size function. The execution function implements the operation's runtime behaviour, the gas cost function implements the operation gas costs function and greatly depends on the memory and stack, the stack validation function validates the stack and makes sure that enough items can be popped off and pushed on and the memory size function calculates the memory required for the operation and returns it. This commit also allows the EVM to go unmetered. This is helpful for offline operations such as contract calls.
203 lines
6.7 KiB
Go
203 lines
6.7 KiB
Go
// Copyright 2016 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package les
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import (
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"bytes"
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/ethdb"
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"github.com/ethereum/go-ethereum/light"
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"github.com/ethereum/go-ethereum/params"
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"github.com/ethereum/go-ethereum/rlp"
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"golang.org/x/net/context"
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)
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type odrTestFn func(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte
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func TestOdrGetBlockLes1(t *testing.T) { testOdr(t, 1, 1, odrGetBlock) }
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func odrGetBlock(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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var block *types.Block
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if bc != nil {
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block = bc.GetBlockByHash(bhash)
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} else {
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block, _ = lc.GetBlockByHash(ctx, bhash)
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}
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if block == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(block)
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return rlp
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}
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func TestOdrGetReceiptsLes1(t *testing.T) { testOdr(t, 1, 1, odrGetReceipts) }
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func odrGetReceipts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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var receipts types.Receipts
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if bc != nil {
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receipts = core.GetBlockReceipts(db, bhash, core.GetBlockNumber(db, bhash))
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} else {
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receipts, _ = light.GetBlockReceipts(ctx, lc.Odr(), bhash, core.GetBlockNumber(db, bhash))
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}
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if receipts == nil {
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return nil
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}
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rlp, _ := rlp.EncodeToBytes(receipts)
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return rlp
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}
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func TestOdrAccountsLes1(t *testing.T) { testOdr(t, 1, 1, odrAccounts) }
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func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
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acc := []common.Address{testBankAddress, acc1Addr, acc2Addr, dummyAddr}
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var res []byte
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for _, addr := range acc {
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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st, err := state.New(header.Root, db)
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if err == nil {
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bal := st.GetBalance(addr)
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rlp, _ := rlp.EncodeToBytes(bal)
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res = append(res, rlp...)
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}
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} else {
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header := lc.GetHeaderByHash(bhash)
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st := light.NewLightState(light.StateTrieID(header), lc.Odr())
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bal, err := st.GetBalance(ctx, addr)
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if err == nil {
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rlp, _ := rlp.EncodeToBytes(bal)
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res = append(res, rlp...)
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}
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}
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}
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return res
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}
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func TestOdrContractCallLes1(t *testing.T) { testOdr(t, 1, 2, odrContractCall) }
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type callmsg struct {
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types.Message
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}
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func (callmsg) CheckNonce() bool { return false }
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func odrContractCall(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
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data := common.Hex2Bytes("60CD26850000000000000000000000000000000000000000000000000000000000000000")
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var res []byte
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for i := 0; i < 3; i++ {
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data[35] = byte(i)
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if bc != nil {
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header := bc.GetHeaderByHash(bhash)
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statedb, err := state.New(header.Root, db)
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if err == nil {
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from := statedb.GetOrNewStateObject(testBankAddress)
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from.SetBalance(common.MaxBig)
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msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, bc)
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vmenv := vm.NewEVM(context, statedb, config, vm.Config{})
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//vmenv := core.NewEnv(statedb, config, bc, msg, header, vm.Config{})
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gp := new(core.GasPool).AddGas(common.MaxBig)
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ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
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res = append(res, ret...)
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}
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} else {
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header := lc.GetHeaderByHash(bhash)
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state := light.NewLightState(light.StateTrieID(header), lc.Odr())
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vmstate := light.NewVMState(ctx, state)
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from, err := state.GetOrNewStateObject(ctx, testBankAddress)
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if err == nil {
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from.SetBalance(common.MaxBig)
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msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), big.NewInt(100000), new(big.Int), data, false)}
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context := core.NewEVMContext(msg, header, lc)
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vmenv := vm.NewEVM(context, vmstate, config, vm.Config{})
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//vmenv := light.NewEnv(ctx, state, config, lc, msg, header, vm.Config{})
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gp := new(core.GasPool).AddGas(common.MaxBig)
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ret, _, _ := core.ApplyMessage(vmenv, msg, gp)
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if vmstate.Error() == nil {
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res = append(res, ret...)
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}
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}
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}
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}
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return res
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}
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func testOdr(t *testing.T, protocol int, expFail uint64, fn odrTestFn) {
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// Assemble the test environment
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pm, db, odr := newTestProtocolManagerMust(t, false, 4, testChainGen)
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lpm, ldb, odr := newTestProtocolManagerMust(t, true, 0, nil)
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_, err1, lpeer, err2 := newTestPeerPair("peer", protocol, pm, lpm)
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pool := (*testServerPool)(lpeer)
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odr.serverPool = pool
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select {
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case <-time.After(time.Millisecond * 100):
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case err := <-err1:
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t.Fatalf("peer 1 handshake error: %v", err)
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case err := <-err2:
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t.Fatalf("peer 1 handshake error: %v", err)
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}
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lpm.synchronise(lpeer)
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test := func(expFail uint64) {
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for i := uint64(0); i <= pm.blockchain.CurrentHeader().Number.Uint64(); i++ {
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bhash := core.GetCanonicalHash(db, i)
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b1 := fn(light.NoOdr, db, pm.chainConfig, pm.blockchain.(*core.BlockChain), nil, bhash)
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ctx, _ := context.WithTimeout(context.Background(), 200*time.Millisecond)
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b2 := fn(ctx, ldb, lpm.chainConfig, nil, lpm.blockchain.(*light.LightChain), bhash)
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eq := bytes.Equal(b1, b2)
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exp := i < expFail
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if exp && !eq {
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t.Errorf("odr mismatch")
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}
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if !exp && eq {
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t.Errorf("unexpected odr match")
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}
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}
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}
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// temporarily remove peer to test odr fails
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odr.serverPool = nil
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// expect retrievals to fail (except genesis block) without a les peer
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test(expFail)
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odr.serverPool = pool
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// expect all retrievals to pass
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test(5)
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odr.serverPool = nil
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// still expect all retrievals to pass, now data should be cached locally
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test(5)
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}
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