4 files changed, 5 insertions, 3 deletions
diff --git a/xfa/src/fxfa/src/app/xfa_checksum.h b/xfa/src/fxfa/src/app/xfa_checksum.h
index 4ffe670979..62e439fe1b 100644
--- a/xfa/src/fxfa/src/app/xfa_checksum.h
+++ b/xfa/src/fxfa/src/app/xfa_checksum.h
@@ -40,7 +40,7 @@ class CXFA_ChecksumContext : public IXFA_ChecksumContext
 {
 public:
     CXFA_ChecksumContext();
-    ~CXFA_ChecksumContext();
+    virtual ~CXFA_ChecksumContext();
     virtual	void		Release()
     {
         delete this;
diff --git a/xfa/src/fxfa/src/app/xfa_ffdocview.h b/xfa/src/fxfa/src/app/xfa_ffdocview.h
index 557a39f3f6..6037716d8c 100644
--- a/xfa/src/fxfa/src/app/xfa_ffdocview.h
+++ b/xfa/src/fxfa/src/app/xfa_ffdocview.h
@@ -121,7 +121,7 @@ class CXFA_FFDocWidgetIterator : public IXFA_WidgetIterator
 {
 public:
     CXFA_FFDocWidgetIterator(CXFA_FFDocView* pDocView, CXFA_Node* pTravelRoot);
-    ~CXFA_FFDocWidgetIterator();
+    virtual ~CXFA_FFDocWidgetIterator();
 
     virtual void				Release()
     {
@@ -144,7 +144,7 @@ class CXFA_WidgetAccIterator : public IXFA_WidgetAccIterator
 {
 public:
     CXFA_WidgetAccIterator(CXFA_FFDocView* pDocView, CXFA_Node* pTravelRoot);
-    ~CXFA_WidgetAccIterator();
+    virtual ~CXFA_WidgetAccIterator();
     virtual void				Release()
     {
         delete this;
diff --git a/xfa/src/fxfa/src/app/xfa_fwladapter.h b/xfa/src/fxfa/src/app/xfa_fwladapter.h
index 62975ff0da..8c472d46db 100644
--- a/xfa/src/fxfa/src/app/xfa_fwladapter.h
+++ b/xfa/src/fxfa/src/app/xfa_fwladapter.h
@@ -15,6 +15,7 @@ public:
 class IXFA_FWLEventHandler
 {
 public:
+    virtual ~IXFA_FWLEventHandler() {}
     virtual FX_BOOL		GetPopupPos(IFWL_Widget *pWidget, FX_FLOAT fMinPopup, FX_FLOAT fMaxPopup,
                                     const CFX_RectF &rtAnchor, CFX_RectF& rtPopup)
     {
diff --git a/xfa/src/fxfa/src/app/xfa_textlayout.h b/xfa/src/fxfa/src/app/xfa_textlayout.h
index bb8b4b528d..2e01066680 100644
--- a/xfa/src/fxfa/src/app/xfa_textlayout.h
+++ b/xfa/src/fxfa/src/app/xfa_textlayout.h
@@ -11,6 +11,7 @@ class CXFA_TextTabstopsContext;
 class IXFA_TextProvider
 {
 public:
+    virtual ~IXFA_TextProvider() {}
     virtual CXFA_Node*			GetTextNode(FX_BOOL &bRichText) = 0;
     virtual CXFA_Para			GetParaNode() = 0;
     virtual CXFA_Font			GetFontNode() = 0;