Forward and log EC recover err and remove dup pubkey len check

core/vm/address.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/crypto"
+	"github.com/ethereum/go-ethereum/logger/glog"
 	"github.com/ethereum/go-ethereum/params"
 )
 
@@ -80,9 +81,10 @@ func ecrecoverFunc(in []byte) []byte {
 
 	// v needs to be moved to the end
 	rsv := append(in[64:128], byte(v.Uint64()))
-	pubKey := crypto.Ecrecover(in[:32], rsv)
+	pubKey, err := crypto.Ecrecover(in[:32], rsv)
 	// make sure the public key is a valid one
-	if pubKey == nil || len(pubKey) != 65 {
+	if err != nil {
+		glog.V(0).Infof("EC RECOVER FAIL: ", err)
 		return nil
 	}