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-rw-r--r--xmlDrawing.go6
1 files changed, 5 insertions, 1 deletions
diff --git a/xmlDrawing.go b/xmlDrawing.go
index 4b51b63..4e35fcf 100644
--- a/xmlDrawing.go
+++ b/xmlDrawing.go
@@ -11,7 +11,10 @@
package excelize
-import "encoding/xml"
+import (
+ "encoding/xml"
+ "sync"
+)
// Source relationship and namespace list, associated prefixes and schema in which it was
// introduced.
@@ -303,6 +306,7 @@ type xlsxPoint2D struct {
// xlsxWsDr directly maps the root element for a part of this content type shall
// wsDr.
type xlsxWsDr struct {
+ sync.Mutex
XMLName xml.Name `xml:"xdr:wsDr"`
AbsoluteAnchor []*xdrCellAnchor `xml:"xdr:absoluteAnchor"`
OneCellAnchor []*xdrCellAnchor `xml:"xdr:oneCellAnchor"`