plugeth/core/vm/interpreter_test.go

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// Copyright 2021 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package vm
import (
"testing"
"time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/math"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
"github.com/holiman/uint256"
)
var loopInterruptTests = []string{
// infinite loop using JUMP: push(2) jumpdest dup1 jump
"60025b8056",
// infinite loop using JUMPI: push(1) push(4) jumpdest dup2 dup2 jumpi
"600160045b818157",
}
func TestLoopInterrupt(t *testing.T) {
address := common.BytesToAddress([]byte("contract"))
vmctx := BlockContext{
Transfer: func(StateDB, common.Address, common.Address, *uint256.Int) {},
}
for i, tt := range loopInterruptTests {
statedb, _ := state.New(types.EmptyRootHash, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
statedb.CreateAccount(address)
statedb.SetCode(address, common.Hex2Bytes(tt))
statedb.Finalise(true)
evm := NewEVM(vmctx, TxContext{}, statedb, params.AllEthashProtocolChanges, Config{})
errChannel := make(chan error)
timeout := make(chan bool)
go func(evm *EVM) {
_, _, err := evm.Call(AccountRef(common.Address{}), address, nil, math.MaxUint64, new(uint256.Int))
errChannel <- err
}(evm)
go func() {
<-time.After(time.Second)
timeout <- true
}()
evm.Cancel()
select {
case <-timeout:
t.Errorf("test %d timed out", i)
case err := <-errChannel:
if err != nil {
t.Errorf("test %d failure: %v", i, err)
}
}
}
}