fix int and fixed bytes

accounts/abi/bind/topics.go

@@ -219,8 +219,7 @@ func parseTopicsIntoMap(out map[string]interface{}, fields abi.Arguments, topics
 		case abi.BoolTy:
 			out[arg.Name] = topics[0][common.HashLength-1] == 1
 		case abi.IntTy, abi.UintTy:
-			num := new(big.Int).SetBytes(topics[0][:])
+			out[arg.Name] = abi.ReadInteger(arg.Type.T, arg.Type.Kind, topics[0].Bytes())
-			out[arg.Name] = num
 		case abi.AddressTy:
 			var addr common.Address
 			copy(addr[:], topics[0][common.HashLength-common.AddressLength:])
@@ -228,9 +227,11 @@ func parseTopicsIntoMap(out map[string]interface{}, fields abi.Arguments, topics
 		case abi.HashTy:
 			out[arg.Name] = topics[0]
 		case abi.FixedBytesTy:
-			array := reflect.New(arg.Type.Type).Elem()
+			array, err := abi.ReadFixedBytes(arg.Type, topics[0].Bytes())
-			reflect.Copy(array, reflect.ValueOf(topics[0][:arg.Type.Size]))
+			if err != nil {
-			out[arg.Name] = array.Interface()
+				return err
+			}
+			out[arg.Name] = array
 		case abi.StringTy, abi.BytesTy, abi.SliceTy, abi.ArrayTy:
 			// Array types (including strings and bytes) have their keccak256 hashes stored in the topic- not a hash
 			// whose bytes can be decoded to the actual value- so the best we can do is retrieve that hash

accounts/abi/unpack.go

@@ -26,16 +26,18 @@ import (
 )
 
 var (
+	// MaxUint256 is the maximum value that can be represented by a uint256
 	MaxUint256 = big.NewInt(0).Add(
 		big.NewInt(0).Exp(big.NewInt(2), big.NewInt(256), nil),
 		big.NewInt(-1))
+	// MaxInt256 is the maximum value that can be represented by a int256
 	MaxInt256 = big.NewInt(0).Add(
 		big.NewInt(0).Exp(big.NewInt(2), big.NewInt(255), nil),
 		big.NewInt(-1))
 )
 
-// reads the integer based on its kind
+// ReadInteger reads the integer based on its kind and returns the appropriate value
-func readInteger(typ byte, kind reflect.Kind, b []byte) interface{} {
+func ReadInteger(typ byte, kind reflect.Kind, b []byte) interface{} {
 	switch kind {
 	case reflect.Uint8:
 		return b[len(b)-1]
@@ -102,8 +104,8 @@ func readFunctionType(t Type, word []byte) (funcTy [24]byte, err error) {
 	return
 }
 
-// through reflection, creates a fixed array to be read from
+// ReadFixedBytes uses reflection to create a fixed array to be read from
-func readFixedBytes(t Type, word []byte) (interface{}, error) {
+func ReadFixedBytes(t Type, word []byte) (interface{}, error) {
 	if t.T != FixedBytesTy {
 		return nil, fmt.Errorf("abi: invalid type in call to make fixed byte array")
 	}
@@ -230,7 +232,7 @@ func toGoType(index int, t Type, output []byte) (interface{}, error) {
 	case StringTy: // variable arrays are written at the end of the return bytes
 		return string(output[begin : begin+length]), nil
 	case IntTy, UintTy:
-		return readInteger(t.T, t.Kind, returnOutput), nil
+		return ReadInteger(t.T, t.Kind, returnOutput), nil
 	case BoolTy:
 		return readBool(returnOutput)
 	case AddressTy:
@@ -240,7 +242,7 @@ func toGoType(index int, t Type, output []byte) (interface{}, error) {
 	case BytesTy:
 		return output[begin : begin+length], nil
 	case FixedBytesTy:
-		return readFixedBytes(t, returnOutput)
+		return ReadFixedBytes(t, returnOutput)
 	case FunctionTy:
 		return readFunctionType(t, returnOutput)
 	default: