Remove custom memory manager

core/src/fpdfapi/fpdf_font/fpdf_font_cid.cpp

 // 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
 
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_page.h"
 #include "font_int.h"
 #include "../fpdf_cmaps/cmap_int.h"
@@ skipping 393 matching lines @@
             break;
         }
         index ++;
     }
     const CPDF_PredefinedCMap& map = g_PredefinedCMaps[index];
     m_Charset = map.m_Charset;
     m_Coding = map.m_Coding;
     m_CodingScheme = map.m_CodingScheme;
     if (m_CodingScheme == MixedTwoBytes) {
         m_pLeadingBytes = FX_Alloc(FX_BYTE, 256);
-        FXSYS_memset32(m_pLeadingBytes, 0, 256);
         for (FX_DWORD i = 0; i < map.m_LeadingSegCount; i ++) {
             for (int b = map.m_LeadingSegs[i * 2]; b <= map.m_LeadingSegs[i * 2 + 1]; b ++) {
                 m_pLeadingBytes[b] = 1;
             }
         }
     }
     FPDFAPI_FindEmbeddedCMap(pName, m_Charset, m_Coding, m_pEmbedMap);
     if (m_pEmbedMap) {
         m_bLoaded = TRUE;
         return TRUE;
     }
 #ifndef _FPDFAPI_MINI_
     FX_LPVOID pPackage = pMgr->GetPackage(bPromptCJK);
     FX_LPBYTE pBuffer;
     FX_DWORD size;
     if (pPackage == NULL || !FXFC_LoadFile(pPackage, m_PredefinedCMap, pBuffer, size)) {
         return FALSE;
     }
     m_pMapping = FX_Alloc(FX_WORD, 65536);
-    FXSYS_memset32(m_pMapping, 0, 65536 * sizeof(FX_WORD));
     FX_DWORD dwRecodeEndPos = 0;
     if (pBuffer[5] == 0) {
         FX_DWORD dwStartIndex = *(FX_DWORD*)(pBuffer + 8);
         FX_DWORD dwRecordCount = *(FX_DWORD*)(pBuffer + 16);
         FX_DWORD dwDataOffset = *(FX_DWORD*)(pBuffer + 20);
         if (dwRecordCount * 2 + dwStartIndex * 2 < 65536) {
             FXSYS_memcpy32(m_pMapping + dwStartIndex * 2, pBuffer + dwDataOffset, dwRecordCount * 2);
         }
         dwRecodeEndPos = dwDataOffset + dwRecordCount * 2;
     } else if (pBuffer[5] == 2) {
@@ skipping 28 matching lines @@
 }
 extern "C" {
     static int compare_dword(const void* data1, const void* data2)
     {
         return (*(FX_DWORD*)data1) - (*(FX_DWORD*)data2);
     }
 };
 FX_BOOL CPDF_CMap::LoadEmbedded(FX_LPCBYTE pData, FX_DWORD size)
 {
     m_pMapping = FX_Alloc(FX_WORD, 65536);
-    FXSYS_memset32(m_pMapping, 0, 65536 * sizeof(FX_WORD));
     CPDF_CMapParser parser;
     parser.Initialize(this);
     CPDF_SimpleParser syntax(pData, size);
     while (1) {
         CFX_ByteStringC word = syntax.GetWord();
         if (word.IsEmpty()) {
             break;
         }
         parser.ParseWord(word);
     }
@@ skipping 1027 matching lines @@
     m_bType1 = FALSE;
     m_pCMap = CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals()->m_CMapManager.GetPredefinedCMap(
                   FX_BSTRC("GBK-EUC-H"), FALSE);
     m_pCID2UnicodeMap = CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals()->m_CMapManager.GetCID2UnicodeMap(m_Charset, FALSE);
     if (!IsEmbedded()) {
         LoadSubstFont();
     }
     CheckFontMetrics();
     m_DefaultWidth = 1000;
     m_pAnsiWidths = FX_Alloc(FX_WORD, 128);
-    FXSYS_memset32(m_pAnsiWidths, 0, 128 * sizeof(FX_WORD));
     for (int i = 32; i < 127; i ++) {
         m_pAnsiWidths[i] = 500;
     }
     return TRUE;
 }
 const struct _CIDTransform {
     FX_WORD             CID;
     FX_BYTE             a, b, c, d, e, f;
 }
 Japan1_VertCIDs[] = {
@@ skipping 165 matching lines @@
         if (middlecode > CID) {
             end = middle - 1;
         } else if (middlecode < CID) {
             begin = middle + 1;
         } else {
             return &Japan1_VertCIDs[middle].a;
         }
     }
     return NULL;
 }