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Problem: no proper error for unsupported opcode

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This commit is contained in:
mmsqe 2024-03-28 21:52:13 +08:00
parent 0183c7ad82
commit 9b7188f259
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GPG key ID: 1A484011063C7678
3 changed files with 30 additions and 18 deletions
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1
core/vm/errors.go
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@ -37,6 +37,7 @@ var (
ErrGasUintOverflow = errors.New("gas uint64 overflow")
ErrInvalidCode = errors.New("invalid code: must not begin with 0xef")
ErrNonceUintOverflow = errors.New("nonce uint64 overflow")
ErrUnsupportedRandom = errors.New("unsupported random")
// errStopToken is an internal token indicating interpreter loop termination,
// never returned to outside callers.

3
core/vm/instructions.go
View file

@ -476,6 +476,9 @@ func opDifficulty(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext)
}
func opRandom(pc *uint64, interpreter *EVMInterpreter, scope *ScopeContext) ([]byte, error) {
if interpreter.evm.Context.Random == nil {
return nil, ErrUnsupportedRandom
}
v := new(uint256.Int).SetBytes(interpreter.evm.Context.Random.Bytes())
scope.Stack.push(v)
return nil, nil

24
core/vm/instructions_test.go
View file

@ -719,22 +719,29 @@ func TestCreate2Addreses(t *testing.T) {
func TestRandom(t *testing.T) {
type testcase struct {
name string
random common.Hash
random *common.Hash
err error
}
keccak256Hash := crypto.Keccak256Hash([]byte{0x01, 0x02, 0x03})
for _, tt := range []testcase{
{name: "empty hash", random: common.Hash{}},
{name: "1", random: common.Hash{0}},
{name: "emptyCodeHash", random: types.EmptyCodeHash},
{name: "hash(0x010203)", random: crypto.Keccak256Hash([]byte{0x01, 0x02, 0x03})},
{name: "nil random", random: nil, err: ErrUnsupportedRandom},
{name: "empty hash", random: &common.Hash{}},
{name: "1", random: &common.Hash{0}},
{name: "emptyCodeHash", random: &types.EmptyCodeHash},
{name: "hash(0x010203)", random: &keccak256Hash},
} {
var (
env = NewEVM(BlockContext{Random: &tt.random}, TxContext{}, nil, params.TestChainConfig, Config{})
env = NewEVM(BlockContext{Random: tt.random}, TxContext{}, nil, params.TestChainConfig, Config{})
stack = newstack()
pc = uint64(0)
evmInterpreter = env.interpreter
)
opRandom(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
_, err := opRandom(&pc, evmInterpreter, &ScopeContext{nil, stack, nil})
if tt.err != nil {
if err != tt.err {
t.Errorf("Testcase %v: expected %v, got %v", tt.name, tt.err, err)
}
} else {
if len(stack.data) != 1 {
t.Errorf("Expected one item on stack after %v, got %d: ", tt.name, len(stack.data))
}
@ -748,6 +755,7 @@ func TestRandom(t *testing.T) {
}
}
}
}
func TestBlobHash(t *testing.T) {
type testcase struct {