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

core/include/fpdfapi/fpdf_resource.h

Index: core/include/fpdfapi/fpdf_resource.h
diff --git a/core/include/fpdfapi/fpdf_resource.h b/core/include/fpdfapi/fpdf_resource.h
index 7bad01501a2b2495cb7268cda8080447dd0f92ab..54e1c97ee7c28572b82ccd410a2e58d796094122 100644
--- a/core/include/fpdfapi/fpdf_resource.h
+++ b/core/include/fpdfapi/fpdf_resource.h
@@ -38,6 +38,28 @@ 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
@@ -790,8 +812,9 @@ public:
 
     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];