code review 5619052: std: add struct field tags to untagged literals.

src/pkg/crypto/x509/pkcs1.go

 // Copyright 2011 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 package x509
 
 import (
         "crypto/rsa"
         "encoding/asn1"
         "errors"
@@ skipping 22 matching lines @@
         // We ignore these values because rsa will calculate them.
         Exp   *big.Int
         Coeff *big.Int
 }
 
 // ParsePKCS1PrivateKey returns an RSA private key from its ASN.1 PKCS#1 DER encoded form.
 func ParsePKCS1PrivateKey(der []byte) (key *rsa.PrivateKey, err error) {
         var priv pkcs1PrivateKey
         rest, err := asn1.Unmarshal(der, &priv)
         if len(rest) > 0 {
-                err = asn1.SyntaxError{"trailing data"}
+                err = asn1.SyntaxError{Msg: "trailing data"}
                 return
         }
         if err != nil {
                 return
         }
 
         if priv.Version > 1 {
                 return nil, errors.New("x509: unsupported private key version")
         }
 
@@ skipping 59 matching lines @@
 
         b, _ := asn1.Marshal(priv)
         return b
 }
 
 // rsaPublicKey reflects the ASN.1 structure of a PKCS#1 public key.
 type rsaPublicKey struct {
         N *big.Int
         E int
 }