libgo: update to Go 1.8.1 release

    
    Reviewed-on: https://go-review.googlesource.com/40775

From-SVN: r246957

3 files changed, 41 insertions, 3 deletions

diff --git a/libgo/go/encoding/xml/marshal_test.go b/libgo/go/encoding/xml/marshal_test.go
index 5ec7ece..0126146 100644
--- a/libgo/go/encoding/xml/marshal_test.go
+++ b/libgo/go/encoding/xml/marshal_test.go
@@ -2428,7 +2428,10 @@ func TestIssue16158(t *testing.T) {
 	err := Unmarshal([]byte(data), &struct {
 		B byte `xml:"b,attr,omitempty"`
 	}{})
-	if err == nil {
-		t.Errorf("Unmarshal: expected error, got nil")
+
+	// For Go 1.8.1 we've restored the old "no errors reported" behavior.
+	// We'll try again in Go 1.9 to report errors.
+	if err != nil {
+		t.Errorf("Unmarshal: expected nil, got error")
 	}
 }
diff --git a/libgo/go/encoding/xml/read.go b/libgo/go/encoding/xml/read.go
index 5a89d5f..799b57e 100644
--- a/libgo/go/encoding/xml/read.go
+++ b/libgo/go/encoding/xml/read.go
@@ -285,7 +285,8 @@ func (p *Decoder) unmarshalAttr(val reflect.Value, attr Attr) error {
 		return nil
 	}
 
-	return copyValue(val, []byte(attr.Value))
+	copyValue(val, []byte(attr.Value))
+	return nil
 }
 
 var (
diff --git a/libgo/go/encoding/xml/xml_test.go b/libgo/go/encoding/xml/xml_test.go
index dad6ed9..f43a5e7 100644
--- a/libgo/go/encoding/xml/xml_test.go
+++ b/libgo/go/encoding/xml/xml_test.go
@@ -797,3 +797,37 @@ func TestIssue12417(t *testing.T) {
 		}
 	}
 }
+
+func TestIssue19333(t *testing.T) {
+	type X struct {
+		XMLName Name `xml:"X"`
+		A       int  `xml:",attr"`
+		C       int
+	}
+
+	var tests = []struct {
+		input string
+		ok    bool
+	}{
+		{`<X></X>`, true},
+		{`<X A=""></X>`, true},
+		{`<X A="bad"></X>`, true},
+		{`<X></X>`, true},
+		{`<X><C></C></X>`, false},
+		{`<X><C/></X>`, false},
+		{`<X><C>bad</C></X>`, false},
+	}
+
+	for _, tt := range tests {
+		err := Unmarshal([]byte(tt.input), new(X))
+		if tt.ok {
+			if err != nil {
+				t.Errorf("%s: unexpected error: %v", tt.input, err)
+			}
+		} else {
+			if err == nil {
+				t.Errorf("%s: unexpected success", tt.input)
+			}
+		}
+	}
+}