From 8302a17e8c551586bc8cdf72723b46308f24ae8e Mon Sep 17 00:00:00 2001
From: allen <leloucharcher@163.com>
Date: Wed, 15 Jan 2020 20:21:20 +0800
Subject: [PATCH] fix issue #421

---
 misc_tests/jsoniter_object_test.go | 24 ++++++++++++++++++++++++
 reflect_struct_decoder.go          | 22 +++++++++++-----------
 2 files changed, 35 insertions(+), 11 deletions(-)

diff --git a/misc_tests/jsoniter_object_test.go b/misc_tests/jsoniter_object_test.go
index e44b66f..6ec4e05 100644
--- a/misc_tests/jsoniter_object_test.go
+++ b/misc_tests/jsoniter_object_test.go
@@ -2,6 +2,7 @@ package misc_tests
 
 import (
 	"bytes"
+	"reflect"
 	"testing"
 
 	"github.com/json-iterator/go"
@@ -147,3 +148,26 @@ func Test_unmarshal_into_existing_value(t *testing.T) {
 		"k": "v",
 	}, m)
 }
+
+// for issue421
+func Test_unmarshal_anonymous_struct_invalid(t *testing.T) {
+	should := require.New(t)
+	t1 := struct {
+		Field1 string
+	}{}
+
+	cfg := jsoniter.ConfigCompatibleWithStandardLibrary
+	err := cfg.UnmarshalFromString(`{"Field1":`, &t1)
+	should.NotNil(err)
+	should.NotContains(err.Error(), reflect.TypeOf(t1).String())
+
+	type TestObject struct {
+		Field1 struct {
+			InnerField1 string
+		}
+	}
+	t2 := TestObject{}
+	err = cfg.UnmarshalFromString(`{"Field1":{"InnerField1"`, &t2)
+	should.NotNil(err)
+	should.NotContains(err.Error(), reflect.TypeOf(t2.Field1).String())
+}
diff --git a/reflect_struct_decoder.go b/reflect_struct_decoder.go
index 5ad5cc5..d7eb0eb 100644
--- a/reflect_struct_decoder.go
+++ b/reflect_struct_decoder.go
@@ -507,7 +507,7 @@ func (decoder *generalStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator)
 	for c = ','; c == ','; c = iter.nextToken() {
 		decoder.decodeOneField(ptr, iter)
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	if c != '}' {
@@ -588,7 +588,7 @@ func (decoder *oneFieldStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator)
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -622,7 +622,7 @@ func (decoder *twoFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -660,7 +660,7 @@ func (decoder *threeFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterat
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -702,7 +702,7 @@ func (decoder *fourFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterato
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -748,7 +748,7 @@ func (decoder *fiveFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterato
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -798,7 +798,7 @@ func (decoder *sixFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -852,7 +852,7 @@ func (decoder *sevenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterat
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -910,7 +910,7 @@ func (decoder *eightFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterat
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -972,7 +972,7 @@ func (decoder *nineFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterato
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()
@@ -1038,7 +1038,7 @@ func (decoder *tenFieldsStructDecoder) Decode(ptr unsafe.Pointer, iter *Iterator
 			break
 		}
 	}
-	if iter.Error != nil && iter.Error != io.EOF {
+	if iter.Error != nil && iter.Error != io.EOF && len(decoder.typ.Type1().Name()) != 0 {
 		iter.Error = fmt.Errorf("%v.%s", decoder.typ, iter.Error.Error())
 	}
 	iter.decrementDepth()