Store the address of the page data map's value for proper referencing.

core/include/fpdfapi/fpdf_resource.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef _FPDF_RESOURCE_
 #define _FPDF_RESOURCE_
 #ifndef _FPDF_PARSER_
 #include "fpdf_parser.h"
@@ skipping 20 matching lines @@
 class CPDF_ToUnicodeMap;
 class CFX_SubstFont;
 class CFX_Font;
 class CPDF_RenderContext;
 class CPDF_Form;
 class CPDF_ImageObject;
 class CFX_DIBitmap;
 typedef struct FT_FaceRec_* FXFT_Face;
 class CFX_CTTGSUBTable;
 class CPDF_Page;
+
+template <class ObjClass> class CPDF_CountedObject : public CFX_Object
+{
+public:
+    ObjClass    m_Obj;
+    FX_DWORD    m_nCount;
+};
+typedef CPDF_CountedObject<CPDF_Font*>          CPDF_CountedFont;
+typedef CPDF_CountedObject<CPDF_ColorSpace*>    CPDF_CountedColorSpace;
+typedef CPDF_CountedObject<CPDF_Pattern*>       CPDF_CountedPattern;
+typedef CPDF_CountedObject<CPDF_Image*>         CPDF_CountedImage;
+typedef CPDF_CountedObject<CPDF_IccProfile*>    CPDF_CountedICCProfile;
+typedef CPDF_CountedObject<CPDF_StreamAcc*>     CPDF_CountedStreamAcc;
+
+
+typedef CFX_MapPtrTemplate<CPDF_Dictionary*, CPDF_CountedFont*>     CPDF_FontMap;
+typedef CFX_MapPtrTemplate<CPDF_Object*, CPDF_CountedColorSpace*>   CPDF_ColorSpaceMap;
+typedef CFX_MapPtrTemplate<CPDF_Object*, CPDF_CountedPattern*>      CPDF_PatternMap;
+typedef CFX_MapPtrTemplate<FX_DWORD, CPDF_CountedImage*>            CPDF_ImageMap;
+typedef CFX_MapPtrTemplate<CPDF_Stream*, CPDF_CountedICCProfile*>   CPDF_IccProfileMap;
+typedef CFX_MapPtrTemplate<CPDF_Stream*, CPDF_CountedStreamAcc*>    CPDF_FontFileMap;
+
 #define PDFFONT_TYPE1                   1
 #define PDFFONT_TRUETYPE                2
 #define PDFFONT_TYPE3                   3
 #define PDFFONT_CIDFONT                 4
 #define PDFFONT_FIXEDPITCH              1
 #define PDFFONT_SERIF                   2
 #define PDFFONT_SYMBOLIC                4
 #define PDFFONT_SCRIPT                  8
 #define PDFFONT_NONSYMBOLIC             32
 #define PDFFONT_ITALIC                  64
@@ skipping 732 matching lines @@
     CPDF_Object*                m_pShadingObj;
 
     FX_BOOL                             m_bShadingObj;
 
     FX_BOOL                             Load();
 
     FX_BOOL                             Reload();
 
     int                                 m_ShadingType;
 
-    CPDF_ColorSpace*    m_pCS;
+    CPDF_ColorSpace*    m_pCS; // Still keep m_pCS as some CPDF_ColorSpace (name object) are not managed as counted objects. Refer to CPDF_DocPageData::GetColorSpace.
 
+    CPDF_CountedColorSpace*     m_pCountedCS;
 
     CPDF_Function*              m_pFunctions[4];
 
     int                                 m_nFuncs;
 protected:
     void        Clear();
 };
 struct CPDF_MeshVertex {
     FX_FLOAT x, y;
     FX_FLOAT r, g, b;
@@ skipping 143 matching lines @@
     FX_BOOL                                     m_bIsMask;
 
     FX_BOOL                                     m_bInterpolate;
 
     CPDF_Document*                      m_pDocument;
 
     CPDF_Dictionary*            m_pOC;
     CPDF_Dictionary*    InitJPEG(FX_LPBYTE pData, FX_DWORD size);
 };
 #endif