From b9e0190938f62bf21df078e47190a62ba33ddab2 Mon Sep 17 00:00:00 2001
From: Tom Sepez <tsepez@chromium.org>
Date: Fri, 9 Jan 2015 10:46:50 -0800
Subject: Fix -Wnon-virtual-dtor compiler warnings.

This is done by explicitly adding a virtual dtor to interface classes,
since the cost is small given that there are already virtual functions.

The exceptions are for classes that have a Release() or Delete() method,
in which case it is non-virtual and protected to indicate that the virtual
class is never the deletion point.

BUG=
R=brucedawson@chromium.org, thestig@chromium.org

Review URL: https://codereview.chromium.org/810883005
---
 core/include/fpdfapi/fpdf_parser.h | 17 +++++++----------
 core/include/fpdfapi/fpdf_render.h |  2 +-
 2 files changed, 8 insertions(+), 11 deletions(-)

(limited to 'core/include/fpdfapi')

diff --git a/core/include/fpdfapi/fpdf_parser.h b/core/include/fpdfapi/fpdf_parser.h
index da22dc72ca..d2fdad4cfb 100644
--- a/core/include/fpdfapi/fpdf_parser.h
+++ b/core/include/fpdfapi/fpdf_parser.h
@@ -49,7 +49,7 @@ class CFX_PrivateData;
 class IPDF_EnumPageHandler
 {
 public:
-
+    virtual ~IPDF_EnumPageHandler() { }
     virtual FX_BOOL EnumPage(CPDF_Dictionary* pPageDict) = 0;
 };
 class CPDF_Document : public CFX_PrivateData, public CPDF_IndirectObjects
@@ -247,8 +247,7 @@ class CPDF_SyntaxParser : public CFX_Object
 public:
 
     CPDF_SyntaxParser();
-
-    ~CPDF_SyntaxParser();
+    virtual ~CPDF_SyntaxParser();
 
     void				InitParser(IFX_FileRead* pFileAccess, FX_DWORD HeaderOffset);
 
@@ -366,7 +365,7 @@ struct PARSE_CONTEXT {
 class IPDF_DocParser : public CFX_Object
 {
 public:
-
+    virtual ~IPDF_DocParser() { }
     virtual FX_DWORD	GetRootObjNum() = 0;
 
     virtual FX_DWORD	GetInfoObjNum() = 0;
@@ -402,8 +401,7 @@ class CPDF_Parser FX_FINAL : public IPDF_DocParser
 public:
 
     CPDF_Parser();
-
-    ~CPDF_Parser();
+    ~CPDF_Parser() override;
 
     FX_DWORD			StartParse(FX_LPCSTR filename, FX_BOOL bReParse = FALSE);
 
@@ -853,13 +851,13 @@ protected:
 class IFX_FileAvail
 {
 public:
-
+    virtual ~IFX_FileAvail() { }
     virtual FX_BOOL			IsDataAvail( FX_FILESIZE offset, FX_DWORD size) = 0;
 };
 class IFX_DownloadHints
 {
 public:
-
+    virtual ~IFX_DownloadHints() { }
     virtual void			AddSegment(FX_FILESIZE offset, FX_DWORD size) = 0;
 };
 #define PDF_IS_LINEARIZED			1
@@ -871,13 +869,12 @@ public:
 class IPDF_DataAvail
 {
 public:
+    virtual ~IPDF_DataAvail() { }
 
     virtual FX_BOOL			IsDocAvail(IFX_DownloadHints* pHints) = 0;
 
-
     virtual void			SetDocument(CPDF_Document* pDoc) = 0;
 
-
     virtual FX_BOOL			IsPageAvail(int iPage, IFX_DownloadHints* pHints) = 0;
 
     virtual FX_BOOL			IsLinearized() = 0;
diff --git a/core/include/fpdfapi/fpdf_render.h b/core/include/fpdfapi/fpdf_render.h
index c059bedb2b..e2801f61f2 100644
--- a/core/include/fpdfapi/fpdf_render.h
+++ b/core/include/fpdfapi/fpdf_render.h
@@ -138,7 +138,7 @@ protected:
 class IPDF_BackgroundDraw
 {
 public:
-
+    virtual ~IPDF_BackgroundDraw() { }
     virtual	void	OnDrawBackground(
         CFX_RenderDevice* pBitmapDevice,
         const CFX_AffineMatrix* pOriginal2Bitmap
-- 
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