Fix #247

bencode/decode.go

@@ -495,8 +495,9 @@ func (d *Decoder) parseValue(v reflect.Value) (bool, error) {
 		return true, nil
 	default:
 		if b >= '0' && b <= '9' {
-			// string
-			// append first digit of the length to the buffer
+			// It's a string.
+			d.buf.Reset()
+			// Write the  first digit of the length to the buffer.
 			d.buf.WriteByte(b)
 			return true, d.parseString(v)
 		}

metainfo/metainfo_test.go

@@ -128,3 +128,12 @@ func TestMetainfoWithStringURLList(t *testing.T) {
 	require.NoError(t, err)
 	assert.Len(t, mi.UrlList, 1)
 }
+
+// https://github.com/anacrolix/torrent/issues/247
+//
+// The decoder buffer wasn't cleared before starting the next dict item after
+// a syntax error on a field with the ignore_unmarshal_type_error tag.
+func TestStringCreationDate(t *testing.T) {
+	var mi MetaInfo
+	assert.NoError(t, bencode.Unmarshal([]byte("d13:creation date23:29.03.2018 22:18:14 UTC4:infodee"), &mi))
+}