77 lines
2.2 KiB
Go
77 lines
2.2 KiB
Go
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// Copyright 2021 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 vm
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import (
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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/common/math"
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"github.com/ethereum/go-ethereum/core/rawdb"
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"github.com/ethereum/go-ethereum/core/state"
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"github.com/ethereum/go-ethereum/params"
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)
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var loopInterruptTests = []string{
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// infinite loop using JUMP: push(2) jumpdest dup1 jump
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"60025b8056",
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// infinite loop using JUMPI: push(1) push(4) jumpdest dup2 dup2 jumpi
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"600160045b818157",
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}
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func TestLoopInterrupt(t *testing.T) {
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address := common.BytesToAddress([]byte("contract"))
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vmctx := BlockContext{
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Transfer: func(StateDB, common.Address, common.Address, *big.Int) {},
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}
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for i, tt := range loopInterruptTests {
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statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
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statedb.CreateAccount(address)
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statedb.SetCode(address, common.Hex2Bytes(tt))
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statedb.Finalise(true)
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evm := NewEVM(vmctx, TxContext{}, statedb, params.AllEthashProtocolChanges, Config{})
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errChannel := make(chan error)
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timeout := make(chan bool)
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go func(evm *EVM) {
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_, _, err := evm.Call(AccountRef(common.Address{}), address, nil, math.MaxUint64, new(big.Int))
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errChannel <- err
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}(evm)
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go func() {
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<-time.After(time.Second)
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timeout <- true
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}()
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evm.Cancel()
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select {
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case <-timeout:
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t.Errorf("test %d timed out", i)
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case err := <-errChannel:
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if err != nil {
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t.Errorf("test %d failure: %v", i, err)
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}
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}
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}
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}
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