diff options
Diffstat (limited to 'accounts/abi/abi.go')
| -rw-r--r-- | accounts/abi/abi.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/accounts/abi/abi.go b/accounts/abi/abi.go index 254b1f7fb..535e5d78b 100644 --- a/accounts/abi/abi.go +++ b/accounts/abi/abi.go @@ -137,6 +137,9 @@ func (abi *ABI) UnmarshalJSON(data []byte) error { // MethodById looks up a method by the 4-byte id // returns nil if none found func (abi *ABI) MethodById(sigdata []byte) (*Method, error) { + if len(sigdata) < 4 { + return nil, fmt.Errorf("data too short (% bytes) for abi method lookup", len(sigdata)) + } for _, method := range abi.Methods { if bytes.Equal(method.Id(), sigdata[:4]) { return &method, nil |