Drop FXSYS_ from mem methods

This Cl drops the FXSYS_ from mem methods which are the same on all
platforms.

Bug: pdfium:694
Change-Id: I9d5ae905997dbaaec5aa0b2ae4c07358ed9c6236
Reviewed-on: https://pdfium-review.googlesource.com/3613
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

27 files changed, 109 insertions, 113 deletions

diff --git a/core/fpdfapi/edit/fpdf_edit_create.cpp b/core/fpdfapi/edit/fpdf_edit_create.cpp
index e6fe6b4a59..59d3de35a9 100644
--- a/core/fpdfapi/edit/fpdf_edit_create.cpp
+++ b/core/fpdfapi/edit/fpdf_edit_create.cpp
@@ -778,7 +778,7 @@ bool CPDF_XRefStream::GenerateXRefStream(CPDF_Creator* pCreator, bool bEOF) {
       return false;
     }
     char offset_buf[20];
-    FXSYS_memset(offset_buf, 0, sizeof(offset_buf));
+    memset(offset_buf, 0, sizeof(offset_buf));
     FXSYS_i64toa(m_PrevOffset, offset_buf, 10);
     int32_t offset_len = (int32_t)FXSYS_strlen(offset_buf);
     if (pFile->AppendBlock(offset_buf, offset_len) < 0) {
@@ -1715,7 +1715,7 @@ int32_t CPDF_Creator::WriteDoc_Stage4(IFX_Pause* pPause) {
           return -1;
 
         char offset_buf[20];
-        FXSYS_memset(offset_buf, 0, sizeof(offset_buf));
+        memset(offset_buf, 0, sizeof(offset_buf));
         FXSYS_i64toa(prev, offset_buf, 10);
         if (m_File.AppendBlock(offset_buf, FXSYS_strlen(offset_buf)) < 0)
           return -1;
@@ -1785,7 +1785,7 @@ int32_t CPDF_Creator::WriteDoc_Stage4(IFX_Pause* pPause) {
     return -1;
 
   char offset_buf[20];
-  FXSYS_memset(offset_buf, 0, sizeof(offset_buf));
+  memset(offset_buf, 0, sizeof(offset_buf));
   FXSYS_i64toa(m_XrefStart, offset_buf, 10);
   if (m_File.AppendBlock(offset_buf, FXSYS_strlen(offset_buf)) < 0)
     return -1;
diff --git a/core/fpdfapi/font/cpdf_fontencoding.cpp b/core/fpdfapi/font/cpdf_fontencoding.cpp
index be4eaff13b..2cc6445ab2 100644
--- a/core/fpdfapi/font/cpdf_fontencoding.cpp
+++ b/core/fpdfapi/font/cpdf_fontencoding.cpp
@@ -1646,7 +1646,7 @@ uint32_t PDF_FindCode(const uint16_t* pCodes, uint16_t unicode) {
 }  // namespace
 
 CPDF_FontEncoding::CPDF_FontEncoding() {
-  FXSYS_memset(m_Unicodes, 0, sizeof(m_Unicodes));
+  memset(m_Unicodes, 0, sizeof(m_Unicodes));
 }
 
 int CPDF_FontEncoding::CharCodeFromUnicode(wchar_t unicode) const {
@@ -1660,7 +1660,7 @@ int CPDF_FontEncoding::CharCodeFromUnicode(wchar_t unicode) const {
 CPDF_FontEncoding::CPDF_FontEncoding(int PredefinedEncoding) {
   const uint16_t* pSrc = PDF_UnicodesForPredefinedCharSet(PredefinedEncoding);
   if (!pSrc) {
-    FXSYS_memset(m_Unicodes, 0, sizeof(m_Unicodes));
+    memset(m_Unicodes, 0, sizeof(m_Unicodes));
   } else {
     for (int i = 0; i < 256; i++)
       m_Unicodes[i] = pSrc[i];
@@ -1668,8 +1668,7 @@ CPDF_FontEncoding::CPDF_FontEncoding(int PredefinedEncoding) {
 }
 
 bool CPDF_FontEncoding::IsIdentical(CPDF_FontEncoding* pAnother) const {
-  return FXSYS_memcmp(m_Unicodes, pAnother->m_Unicodes, sizeof(m_Unicodes)) ==
-         0;
+  return memcmp(m_Unicodes, pAnother->m_Unicodes, sizeof(m_Unicodes)) == 0;
 }
 
 std::unique_ptr<CPDF_Object> CPDF_FontEncoding::Realize(
diff --git a/core/fpdfapi/font/cpdf_simplefont.cpp b/core/fpdfapi/font/cpdf_simplefont.cpp
index 94a690f221..a3597824bd 100644
--- a/core/fpdfapi/font/cpdf_simplefont.cpp
+++ b/core/fpdfapi/font/cpdf_simplefont.cpp
@@ -13,9 +13,9 @@
 #include "third_party/base/numerics/safe_math.h"
 
 CPDF_SimpleFont::CPDF_SimpleFont() : m_BaseEncoding(PDFFONT_ENCODING_BUILTIN) {
-  FXSYS_memset(m_CharWidth, 0xff, sizeof(m_CharWidth));
-  FXSYS_memset(m_GlyphIndex, 0xff, sizeof(m_GlyphIndex));
-  FXSYS_memset(m_ExtGID, 0xff, sizeof(m_ExtGID));
+  memset(m_CharWidth, 0xff, sizeof(m_CharWidth));
+  memset(m_GlyphIndex, 0xff, sizeof(m_GlyphIndex));
+  memset(m_ExtGID, 0xff, sizeof(m_ExtGID));
   for (size_t i = 0; i < FX_ArraySize(m_CharBBox); ++i)
     m_CharBBox[i] = FX_RECT(-1, -1, -1, -1);
 }
diff --git a/core/fpdfapi/font/cpdf_type1font.cpp b/core/fpdfapi/font/cpdf_type1font.cpp
index a264a780c3..e3d96dad37 100644
--- a/core/fpdfapi/font/cpdf_type1font.cpp
+++ b/core/fpdfapi/font/cpdf_type1font.cpp
@@ -151,7 +151,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
       if (bGotOne) {
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
         if (!bCoreText)
-          FXSYS_memcpy(m_ExtGID, m_GlyphIndex, 256);
+          memcpy(m_ExtGID, m_GlyphIndex, 256);
 #endif
         return;
       }
@@ -182,7 +182,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
     }
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
     if (!bCoreText)
-      FXSYS_memcpy(m_ExtGID, m_GlyphIndex, 256);
+      memcpy(m_ExtGID, m_GlyphIndex, 256);
 #endif
     return;
   }
@@ -207,7 +207,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
                 FT_UnicodeFromCharCode(PDFFONT_ENCODING_STANDARD, charcode);
           }
           char name_glyph[256];
-          FXSYS_memset(name_glyph, 0, sizeof(name_glyph));
+          memset(name_glyph, 0, sizeof(name_glyph));
           FXFT_Get_Glyph_Name(m_Font.GetFace(), m_GlyphIndex[charcode],
                               name_glyph, 256);
           name_glyph[255] = 0;
@@ -272,7 +272,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
               FT_UnicodeFromCharCode(PDFFONT_ENCODING_STANDARD, charcode);
           if (unicode == 0) {
             char name_glyph[256];
-            FXSYS_memset(name_glyph, 0, sizeof(name_glyph));
+            memset(name_glyph, 0, sizeof(name_glyph));
             FXFT_Get_Glyph_Name(m_Font.GetFace(), m_GlyphIndex[charcode],
                                 name_glyph, 256);
             name_glyph[255] = 0;
@@ -286,7 +286,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
     }
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
     if (!bCoreText)
-      FXSYS_memcpy(m_ExtGID, m_GlyphIndex, 256);
+      memcpy(m_ExtGID, m_GlyphIndex, 256);
 
 #endif
     return;
@@ -315,7 +315,7 @@ void CPDF_Type1Font::LoadGlyphMap() {
   }
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
   if (!bCoreText)
-    FXSYS_memcpy(m_ExtGID, m_GlyphIndex, 256);
+    memcpy(m_ExtGID, m_GlyphIndex, 256);
 #endif
 }
 
diff --git a/core/fpdfapi/font/cpdf_type3font.cpp b/core/fpdfapi/font/cpdf_type3font.cpp
index 59702aed6a..da3b183c13 100644
--- a/core/fpdfapi/font/cpdf_type3font.cpp
+++ b/core/fpdfapi/font/cpdf_type3font.cpp
@@ -24,7 +24,7 @@ CPDF_Type3Font::CPDF_Type3Font()
       m_pPageResources(nullptr),
       m_pFontResources(nullptr),
       m_CharLoadingDepth(0) {
-  FXSYS_memset(m_CharWidthL, 0, sizeof(m_CharWidthL));
+  memset(m_CharWidthL, 0, sizeof(m_CharWidthL));
 }
 
 CPDF_Type3Font::~CPDF_Type3Font() {}
diff --git a/core/fpdfapi/font/fpdf_font.cpp b/core/fpdfapi/font/fpdf_font.cpp
index 706ae62cd9..23b46759d8 100644
--- a/core/fpdfapi/font/fpdf_font.cpp
+++ b/core/fpdfapi/font/fpdf_font.cpp
@@ -71,8 +71,8 @@ CPDF_Font* CFX_StockFontArray::SetFont(uint32_t index,
 }
 
 CPDF_FontGlobals::CPDF_FontGlobals() {
-  FXSYS_memset(m_EmbeddedCharsets, 0, sizeof(m_EmbeddedCharsets));
-  FXSYS_memset(m_EmbeddedToUnicodes, 0, sizeof(m_EmbeddedToUnicodes));
+  memset(m_EmbeddedCharsets, 0, sizeof(m_EmbeddedCharsets));
+  memset(m_EmbeddedToUnicodes, 0, sizeof(m_EmbeddedToUnicodes));
 }
 
 CPDF_FontGlobals::~CPDF_FontGlobals() {}
diff --git a/core/fpdfapi/font/fpdf_font_cid.cpp b/core/fpdfapi/font/fpdf_font_cid.cpp
index ddc0c12b7d..64b041738e 100644
--- a/core/fpdfapi/font/fpdf_font_cid.cpp
+++ b/core/fpdfapi/font/fpdf_font_cid.cpp
@@ -413,8 +413,8 @@ void CPDF_CMapParser::ParseWord(const CFX_ByteStringC& word) {
         FX_Free(m_pCMap->m_pLeadingBytes);
         m_pCMap->m_pLeadingBytes =
             FX_Alloc2D(uint8_t, nSegs, sizeof(CMap_CodeRange));
-        FXSYS_memcpy(m_pCMap->m_pLeadingBytes, m_CodeRanges.data(),
-                     nSegs * sizeof(CMap_CodeRange));
+        memcpy(m_pCMap->m_pLeadingBytes, m_CodeRanges.data(),
+               nSegs * sizeof(CMap_CodeRange));
       } else if (nSegs == 1) {
         m_pCMap->m_CodingScheme = (m_CodeRanges[0].m_CharSize == 2)
                                       ? CPDF_CMap::TwoBytes
@@ -577,8 +577,8 @@ void CPDF_CMap::LoadEmbedded(const uint8_t* pData, uint32_t size) {
   if (m_CodingScheme == MixedFourBytes && parser.m_AddMaps.GetSize()) {
     m_pAddMapping = FX_Alloc(uint8_t, parser.m_AddMaps.GetSize() + 4);
     *(uint32_t*)m_pAddMapping = parser.m_AddMaps.GetSize() / 8;
-    FXSYS_memcpy(m_pAddMapping + 4, parser.m_AddMaps.GetBuffer(),
-                 parser.m_AddMaps.GetSize());
+    memcpy(m_pAddMapping + 4, parser.m_AddMaps.GetBuffer(),
+           parser.m_AddMaps.GetSize());
     FXSYS_qsort(m_pAddMapping + 4, parser.m_AddMaps.GetSize() / 8, 8,
                 CompareDWORD);
   }
@@ -720,7 +720,7 @@ int CPDF_CMap::AppendChar(char* str, uint32_t charcode) const {
           iSize = 1;
         }
         if (iSize > 1) {
-          FXSYS_memset(str, 0, sizeof(uint8_t) * iSize);
+          memset(str, 0, sizeof(uint8_t) * iSize);
         }
         str[iSize - 1] = (uint8_t)charcode;
         return iSize;
diff --git a/core/fpdfapi/page/cpdf_color.cpp b/core/fpdfapi/page/cpdf_color.cpp
index 46771513f4..f0e433c243 100644
--- a/core/fpdfapi/page/cpdf_color.cpp
+++ b/core/fpdfapi/page/cpdf_color.cpp
@@ -71,7 +71,7 @@ void CPDF_Color::SetValue(float* comps) {
   if (!m_pBuffer)
     return;
   if (m_pCS->GetFamily() != PDFCS_PATTERN)
-    FXSYS_memcpy(m_pBuffer, comps, m_pCS->CountComponents() * sizeof(float));
+    memcpy(m_pBuffer, comps, m_pCS->CountComponents() * sizeof(float));
 }
 
 void CPDF_Color::SetValue(CPDF_Pattern* pPattern, float* comps, int ncomps) {
@@ -94,7 +94,7 @@ void CPDF_Color::SetValue(CPDF_Pattern* pPattern, float* comps, int ncomps) {
   pvalue->m_nComps = ncomps;
   pvalue->m_pPattern = pPattern;
   if (ncomps)
-    FXSYS_memcpy(pvalue->m_Comps, comps, ncomps * sizeof(float));
+    memcpy(pvalue->m_Comps, comps, ncomps * sizeof(float));
 
   pvalue->m_pCountedPattern = nullptr;
   if (pPattern && pPattern->document()) {
@@ -120,7 +120,7 @@ void CPDF_Color::Copy(const CPDF_Color* pSrc) {
     return;
 
   m_pBuffer = m_pCS->CreateBuf();
-  FXSYS_memcpy(m_pBuffer, pSrc->m_pBuffer, m_pCS->GetBufSize());
+  memcpy(m_pBuffer, pSrc->m_pBuffer, m_pCS->GetBufSize());
   if (m_pCS->GetFamily() != PDFCS_PATTERN)
     return;
 
diff --git a/core/fpdfapi/page/cpdf_contentparser.cpp b/core/fpdfapi/page/cpdf_contentparser.cpp
index 7ceb509348..46e2c52c75 100644
--- a/core/fpdfapi/page/cpdf_contentparser.cpp
+++ b/core/fpdfapi/page/cpdf_contentparser.cpp
@@ -142,7 +142,7 @@ void CPDF_ContentParser::Continue(IFX_Pause* pPause) {
           m_pData = FX_Alloc(uint8_t, m_Size);
           uint32_t pos = 0;
           for (const auto& stream : m_StreamArray) {
-            FXSYS_memcpy(m_pData + pos, stream->GetData(), stream->GetSize());
+            memcpy(m_pData + pos, stream->GetData(), stream->GetSize());
             pos += stream->GetSize();
             m_pData[pos++] = ' ';
           }
diff --git a/core/fpdfapi/page/cpdf_image.cpp b/core/fpdfapi/page/cpdf_image.cpp
index 4fc1c344ef..da49fab8b1 100644
--- a/core/fpdfapi/page/cpdf_image.cpp
+++ b/core/fpdfapi/page/cpdf_image.cpp
@@ -269,8 +269,8 @@ void CPDF_Image::SetImage(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap) {
       mask_buf.reset(FX_Alloc2D(uint8_t, maskHeight, maskWidth));
       mask_size = maskHeight * maskWidth;  // Safe since checked alloc returned.
       for (int32_t a = 0; a < maskHeight; a++) {
-        FXSYS_memcpy(mask_buf.get() + a * maskWidth,
-                     pMaskBitmap->GetScanline(a), maskWidth);
+        memcpy(mask_buf.get() + a * maskWidth, pMaskBitmap->GetScanline(a),
+               maskWidth);
       }
     }
     pMaskDict->SetNewFor<CPDF_Number>("Length", mask_size);
@@ -288,7 +288,7 @@ void CPDF_Image::SetImage(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap) {
   uint8_t* pDest = dest_buf;
   if (bCopyWithoutAlpha) {
     for (int32_t i = 0; i < BitmapHeight; i++) {
-      FXSYS_memcpy(pDest, src_buf, dest_pitch);
+      memcpy(pDest, src_buf, dest_pitch);
       pDest += dest_pitch;
       src_buf += src_pitch;
     }
diff --git a/core/fpdfapi/page/cpdf_meshstream.cpp b/core/fpdfapi/page/cpdf_meshstream.cpp
index c0074f84cc..b0a21c627a 100644
--- a/core/fpdfapi/page/cpdf_meshstream.cpp
+++ b/core/fpdfapi/page/cpdf_meshstream.cpp
@@ -210,7 +210,7 @@ std::tuple<float, float, float> CPDF_MeshStream::ReadColor() {
   }
 
   float result[kMaxComponents];
-  FXSYS_memset(result, 0, sizeof(result));
+  memset(result, 0, sizeof(result));
   int nResults;
   for (const auto& func : m_funcs) {
     if (func && func->CountOutputs() <= kMaxComponents)
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 59de3c50cb..30686133c2 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -326,11 +326,11 @@ void CPDF_StreamContentParser::AddNameParam(const CFX_ByteStringC& bsName) {
   } else {
     param.m_Type = ContentParam::NAME;
     if (bsName.Find('#') == -1) {
-      FXSYS_memcpy(param.m_Name.m_Buffer, bsName.raw_str(), bsName.GetLength());
+      memcpy(param.m_Name.m_Buffer, bsName.raw_str(), bsName.GetLength());
       param.m_Name.m_Len = bsName.GetLength();
     } else {
       CFX_ByteString str = PDF_NameDecode(bsName);
-      FXSYS_memcpy(param.m_Name.m_Buffer, str.c_str(), str.GetLength());
+      memcpy(param.m_Name.m_Buffer, str.c_str(), str.GetLength());
       param.m_Name.m_Len = str.GetLength();
     }
   }
diff --git a/core/fpdfapi/page/cpdf_streamparser.cpp b/core/fpdfapi/page/cpdf_streamparser.cpp
index f3a04fb117..3c4e534116 100644
--- a/core/fpdfapi/page/cpdf_streamparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamparser.cpp
@@ -53,7 +53,7 @@ uint32_t DecodeAllScanlines(std::unique_ptr<CCodec_ScanlineDecoder> pDecoder,
     if (!pLine)
       break;
 
-    FXSYS_memcpy(dest_buf + row * pitch, pLine, pitch);
+    memcpy(dest_buf + row * pitch, pLine, pitch);
   }
   return pDecoder->GetSrcOffset();
 }
@@ -184,7 +184,7 @@ std::unique_ptr<CPDF_Stream> CPDF_StreamParser::ReadInlineStream(
     if (OrigSize > m_Size - m_Pos)
       OrigSize = m_Size - m_Pos;
     pData.reset(FX_Alloc(uint8_t, OrigSize));
-    FXSYS_memcpy(pData.get(), m_pBuf + m_Pos, OrigSize);
+    memcpy(pData.get(), m_pBuf + m_Pos, OrigSize);
     dwStreamSize = OrigSize;
     m_Pos += OrigSize;
   } else {
@@ -217,7 +217,7 @@ std::unique_ptr<CPDF_Stream> CPDF_StreamParser::ReadInlineStream(
     }
     m_Pos = dwSavePos;
     pData.reset(FX_Alloc(uint8_t, dwStreamSize));
-    FXSYS_memcpy(pData.get(), m_pBuf + m_Pos, dwStreamSize);
+    memcpy(pData.get(), m_pBuf + m_Pos, dwStreamSize);
     m_Pos += dwStreamSize;
   }
   pDict->SetNewFor<CPDF_Number>("Length", (int)dwStreamSize);
diff --git a/core/fpdfapi/page/fpdf_page_colors.cpp b/core/fpdfapi/page/fpdf_page_colors.cpp
index adee5ff84b..ffb8da3a10 100644
--- a/core/fpdfapi/page/fpdf_page_colors.cpp
+++ b/core/fpdfapi/page/fpdf_page_colors.cpp
@@ -27,8 +27,7 @@ float NormalizeChannel(float fVal) {
 }
 
 bool DetectSRGB(const uint8_t* pData, uint32_t dwSize) {
-  return dwSize == 3144 &&
-         FXSYS_memcmp(pData + 0x190, "sRGB IEC61966-2.1", 17) == 0;
+  return dwSize == 3144 && memcmp(pData + 0x190, "sRGB IEC61966-2.1", 17) == 0;
 }
 
 }  // namespace
diff --git a/core/fpdfapi/page/fpdf_page_func.cpp b/core/fpdfapi/page/fpdf_page_func.cpp
index 8ea4194eaa..9be1edb7ff 100644
--- a/core/fpdfapi/page/fpdf_page_func.cpp
+++ b/core/fpdfapi/page/fpdf_page_func.cpp
@@ -801,8 +801,8 @@ bool CPDF_Function::Init(CPDF_Object* pObj) {
   if (m_pRanges && m_nOutputs > old_outputs) {
     m_pRanges = FX_Realloc(float, m_pRanges, m_nOutputs * 2);
     if (m_pRanges) {
-      FXSYS_memset(m_pRanges + (old_outputs * 2), 0,
-                   sizeof(float) * (m_nOutputs - old_outputs) * 2);
+      memset(m_pRanges + (old_outputs * 2), 0,
+             sizeof(float) * (m_nOutputs - old_outputs) * 2);
     }
   }
   return true;
diff --git a/core/fpdfapi/parser/cpdf_crypto_handler.cpp b/core/fpdfapi/parser/cpdf_crypto_handler.cpp
index 61f78c4ee5..4fc7b3039b 100644
--- a/core/fpdfapi/parser/cpdf_crypto_handler.cpp
+++ b/core/fpdfapi/parser/cpdf_crypto_handler.cpp
@@ -21,7 +21,7 @@ void CPDF_CryptoHandler::CryptBlock(bool bEncrypt,
                                     uint8_t* dest_buf,
                                     uint32_t& dest_size) {
   if (m_Cipher == FXCIPHER_NONE) {
-    FXSYS_memcpy(dest_buf, src_buf, src_size);
+    memcpy(dest_buf, src_buf, src_size);
     return;
   }
   uint8_t realkey[16];
@@ -31,7 +31,7 @@ void CPDF_CryptoHandler::CryptBlock(bool bEncrypt,
     PopulateKey(objnum, gennum, key1);
 
     if (m_Cipher == FXCIPHER_AES) {
-      FXSYS_memcpy(key1 + m_KeyLen + 5, "sAlT", 4);
+      memcpy(key1 + m_KeyLen + 5, "sAlT", 4);
     }
     CRYPT_MD5Generate(
         key1, m_Cipher == FXCIPHER_AES ? m_KeyLen + 9 : m_KeyLen + 5, realkey);
@@ -49,13 +49,12 @@ void CPDF_CryptoHandler::CryptBlock(bool bEncrypt,
         iv[i] = (uint8_t)rand();
       }
       CRYPT_AESSetIV(m_pAESContext, iv);
-      FXSYS_memcpy(dest_buf, iv, 16);
+      memcpy(dest_buf, iv, 16);
       int nblocks = src_size / 16;
       CRYPT_AESEncrypt(m_pAESContext, dest_buf + 16, src_buf, nblocks * 16);
       uint8_t padding[16];
-      FXSYS_memcpy(padding, src_buf + nblocks * 16, src_size % 16);
-      FXSYS_memset(padding + src_size % 16, 16 - src_size % 16,
-                   16 - src_size % 16);
+      memcpy(padding, src_buf + nblocks * 16, src_size % 16);
+      memset(padding + src_size % 16, 16 - src_size % 16, 16 - src_size % 16);
       CRYPT_AESEncrypt(m_pAESContext, dest_buf + nblocks * 16 + 16, padding,
                        16);
       dest_size = 32 + nblocks * 16;
@@ -68,7 +67,7 @@ void CPDF_CryptoHandler::CryptBlock(bool bEncrypt,
   } else {
     ASSERT(dest_size == src_size);
     if (dest_buf != src_buf) {
-      FXSYS_memcpy(dest_buf, src_buf, src_size);
+      memcpy(dest_buf, src_buf, src_size);
     }
     CRYPT_ArcFourCryptBlock(dest_buf, dest_size, realkey, realkeylen);
   }
@@ -104,7 +103,7 @@ void* CPDF_CryptoHandler::CryptStart(uint32_t objnum,
   PopulateKey(objnum, gennum, key1);
 
   if (m_Cipher == FXCIPHER_AES) {
-    FXSYS_memcpy(key1 + m_KeyLen + 5, "sAlT", 4);
+    memcpy(key1 + m_KeyLen + 5, "sAlT", 4);
   }
   uint8_t realkey[16];
   CRYPT_MD5Generate(
@@ -162,8 +161,8 @@ bool CPDF_CryptoHandler::CryptStream(void* context,
     if (copy_size > src_left) {
       copy_size = src_left;
     }
-    FXSYS_memcpy(pContext->m_Block + pContext->m_BlockOffset, src_buf + src_off,
-                 copy_size);
+    memcpy(pContext->m_Block + pContext->m_BlockOffset, src_buf + src_off,
+           copy_size);
     src_off += copy_size;
     src_left -= copy_size;
     pContext->m_BlockOffset += copy_size;
@@ -212,9 +211,9 @@ bool CPDF_CryptoHandler::CryptFinish(void* context,
       dest_buf.AppendBlock(block_buf, 16);
       pContext->m_BlockOffset = 0;
     }
-    FXSYS_memset(pContext->m_Block + pContext->m_BlockOffset,
-                 (uint8_t)(16 - pContext->m_BlockOffset),
-                 16 - pContext->m_BlockOffset);
+    memset(pContext->m_Block + pContext->m_BlockOffset,
+           (uint8_t)(16 - pContext->m_BlockOffset),
+           16 - pContext->m_BlockOffset);
     CRYPT_AESEncrypt(pContext->m_Context, block_buf, pContext->m_Block, 16);
     dest_buf.AppendBlock(block_buf, 16);
   } else if (pContext->m_BlockOffset == 16) {
@@ -255,7 +254,7 @@ bool CPDF_CryptoHandler::Init(CPDF_Dictionary* pEncryptDict,
     return false;
   }
   if (m_Cipher != FXCIPHER_NONE) {
-    FXSYS_memcpy(m_EncryptKey, key, m_KeyLen);
+    memcpy(m_EncryptKey, key, m_KeyLen);
   }
   if (m_Cipher == FXCIPHER_AES) {
     m_pAESContext = FX_Alloc(uint8_t, 2048);
@@ -288,7 +287,7 @@ bool CPDF_CryptoHandler::Init(int cipher, const uint8_t* key, int keylen) {
   }
   m_Cipher = cipher;
   m_KeyLen = keylen;
-  FXSYS_memcpy(m_EncryptKey, key, keylen);
+  memcpy(m_EncryptKey, key, keylen);
   if (m_Cipher == FXCIPHER_AES) {
     m_pAESContext = FX_Alloc(uint8_t, 2048);
   }
@@ -333,7 +332,7 @@ CPDF_CryptoHandler::~CPDF_CryptoHandler() {
 void CPDF_CryptoHandler::PopulateKey(uint32_t objnum,
                                      uint32_t gennum,
                                      uint8_t* key) {
-  FXSYS_memcpy(key, m_EncryptKey, m_KeyLen);
+  memcpy(key, m_EncryptKey, m_KeyLen);
   key[m_KeyLen + 0] = (uint8_t)objnum;
   key[m_KeyLen + 1] = (uint8_t)(objnum >> 8);
   key[m_KeyLen + 2] = (uint8_t)(objnum >> 16);
diff --git a/core/fpdfapi/parser/cpdf_document.cpp b/core/fpdfapi/parser/cpdf_document.cpp
index 975592d044..b336acaf84 100644
--- a/core/fpdfapi/parser/cpdf_document.cpp
+++ b/core/fpdfapi/parser/cpdf_document.cpp
@@ -961,7 +961,7 @@ CPDF_Font* CPDF_Document::AddWindowsFont(LOGFONTW* pLogFont,
                                          bool bVert,
                                          bool bTranslateName) {
   LOGFONTA lfa;
-  FXSYS_memcpy(&lfa, pLogFont, (char*)lfa.lfFaceName - (char*)&lfa);
+  memcpy(&lfa, pLogFont, (char*)lfa.lfFaceName - (char*)&lfa);
   CFX_ByteString face = CFX_ByteString::FromUnicode(pLogFont->lfFaceName);
   if (face.GetLength() >= LF_FACESIZE)
     return nullptr;
diff --git a/core/fpdfapi/parser/cpdf_object_unittest.cpp b/core/fpdfapi/parser/cpdf_object_unittest.cpp
index 3b5374b637..1923992d7a 100644
--- a/core/fpdfapi/parser/cpdf_object_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_object_unittest.cpp
@@ -162,8 +162,8 @@ class PDFObjectsTest : public testing::Test {
         // streams need to be handled.
         if (!stream1->IsMemoryBased() || !stream2->IsMemoryBased())
           return false;
-        return FXSYS_memcmp(stream1->GetRawData(), stream2->GetRawData(),
-                            stream1->GetRawSize()) == 0;
+        return memcmp(stream1->GetRawData(), stream2->GetRawData(),
+                      stream1->GetRawSize()) == 0;
       }
       case CPDF_Object::REFERENCE:
         return obj1->AsReference()->GetRefObjNum() ==
diff --git a/core/fpdfapi/parser/cpdf_parser.cpp b/core/fpdfapi/parser/cpdf_parser.cpp
index 323f91779c..cac678762d 100644
--- a/core/fpdfapi/parser/cpdf_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_parser.cpp
@@ -1217,7 +1217,7 @@ void CPDF_Parser::GetIndirectBinary(uint32_t objnum,
       }
 
       pBuffer = FX_Alloc(uint8_t, size);
-      FXSYS_memcpy(pBuffer, pData + thisoff + offset, size);
+      memcpy(pBuffer, pData + thisoff + offset, size);
       return;
     }
     return;
diff --git a/core/fpdfapi/parser/cpdf_security_handler.cpp b/core/fpdfapi/parser/cpdf_security_handler.cpp
index cfc51350d9..44042cb47c 100644
--- a/core/fpdfapi/parser/cpdf_security_handler.cpp
+++ b/core/fpdfapi/parser/cpdf_security_handler.cpp
@@ -66,8 +66,8 @@ void CalcEncryptKey(CPDF_Dictionary* pEncrypt,
       CRYPT_MD5Generate(digest, copy_len, digest);
     }
   }
-  FXSYS_memset(key, 0, keylen);
-  FXSYS_memcpy(key, digest, copy_len);
+  memset(key, 0, keylen);
+  memcpy(key, digest, copy_len);
 }
 
 }  // namespace
@@ -303,7 +303,7 @@ void Revision6_Hash(const uint8_t* password,
   }
   FX_Free(aes);
   if (hash) {
-    FXSYS_memcpy(hash, input, 32);
+    memcpy(hash, input, 32);
   }
 }
 
@@ -337,7 +337,7 @@ bool CPDF_SecurityHandler::AES256_CheckPassword(const uint8_t* password,
 
     CRYPT_SHA256Finish(&sha, digest);
   }
-  if (FXSYS_memcmp(digest, pkey, 32) != 0)
+  if (memcmp(digest, pkey, 32) != 0)
     return false;
 
   if (!key)
@@ -364,7 +364,7 @@ bool CPDF_SecurityHandler::AES256_CheckPassword(const uint8_t* password,
   std::vector<uint8_t> aes(2048);
   CRYPT_AESSetKey(aes.data(), 16, digest, 32, false);
   uint8_t iv[16];
-  FXSYS_memset(iv, 0, 16);
+  memset(iv, 0, 16);
   CRYPT_AESSetIV(aes.data(), iv);
   CRYPT_AESDecrypt(aes.data(), key, ekey.raw_str(), 32);
   CRYPT_AESSetKey(aes.data(), 16, key, 32, false);
@@ -374,10 +374,10 @@ bool CPDF_SecurityHandler::AES256_CheckPassword(const uint8_t* password,
     return false;
 
   uint8_t perms_buf[16];
-  FXSYS_memset(perms_buf, 0, sizeof(perms_buf));
+  memset(perms_buf, 0, sizeof(perms_buf));
   size_t copy_len =
       std::min(sizeof(perms_buf), static_cast<size_t>(perms.GetLength()));
-  FXSYS_memcpy(perms_buf, perms.raw_str(), copy_len);
+  memcpy(perms_buf, perms.raw_str(), copy_len);
   uint8_t buf[16];
   CRYPT_AESDecrypt(aes.data(), buf, perms_buf, 16);
   if (buf[9] != 'a' || buf[10] != 'd' || buf[11] != 'b')
@@ -425,7 +425,7 @@ bool CPDF_SecurityHandler::CheckUserPassword(const uint8_t* password,
   }
   uint8_t ukeybuf[32];
   if (m_Revision == 2) {
-    FXSYS_memcpy(ukeybuf, defpasscode, 32);
+    memcpy(ukeybuf, defpasscode, 32);
     CRYPT_ArcFourCryptBlock(ukeybuf, 32, key, key_len);
   } else {
     uint8_t test[32], tmpkey[32];
@@ -433,9 +433,9 @@ bool CPDF_SecurityHandler::CheckUserPassword(const uint8_t* password,
     if (copy_len > (uint32_t)ukey.GetLength()) {
       copy_len = ukey.GetLength();
     }
-    FXSYS_memset(test, 0, sizeof(test));
-    FXSYS_memset(tmpkey, 0, sizeof(tmpkey));
-    FXSYS_memcpy(test, ukey.c_str(), copy_len);
+    memset(test, 0, sizeof(test));
+    memset(tmpkey, 0, sizeof(tmpkey));
+    memcpy(test, ukey.c_str(), copy_len);
     for (int32_t i = 19; i >= 0; i--) {
       for (int j = 0; j < key_len; j++)
         tmpkey[j] = key[j] ^ static_cast<uint8_t>(i);
@@ -450,9 +450,9 @@ bool CPDF_SecurityHandler::CheckUserPassword(const uint8_t* password,
       CRYPT_MD5Update(&md5, (uint8_t*)id.c_str(), id.GetLength());
     }
     CRYPT_MD5Finish(&md5, ukeybuf);
-    return FXSYS_memcmp(test, ukeybuf, 16) == 0;
+    return memcmp(test, ukeybuf, 16) == 0;
   }
-  if (FXSYS_memcmp((void*)ukey.c_str(), ukeybuf, 16) == 0) {
+  if (memcmp((void*)ukey.c_str(), ukeybuf, 16) == 0) {
     return true;
   }
   return false;
@@ -473,25 +473,25 @@ CFX_ByteString CPDF_SecurityHandler::GetUserPassword(const uint8_t* owner_pass,
     }
   }
   uint8_t enckey[32];
-  FXSYS_memset(enckey, 0, sizeof(enckey));
+  memset(enckey, 0, sizeof(enckey));
   uint32_t copy_len = key_len;
   if (copy_len > sizeof(digest)) {
     copy_len = sizeof(digest);
   }
-  FXSYS_memcpy(enckey, digest, copy_len);
+  memcpy(enckey, digest, copy_len);
   int okeylen = okey.GetLength();
   if (okeylen > 32) {
     okeylen = 32;
   }
   uint8_t okeybuf[64];
-  FXSYS_memset(okeybuf, 0, sizeof(okeybuf));
-  FXSYS_memcpy(okeybuf, okey.c_str(), okeylen);
+  memset(okeybuf, 0, sizeof(okeybuf));
+  memcpy(okeybuf, okey.c_str(), okeylen);
   if (m_Revision == 2) {
     CRYPT_ArcFourCryptBlock(okeybuf, okeylen, enckey, key_len);
   } else {
     for (int32_t i = 19; i >= 0; i--) {
       uint8_t tempkey[32];
-      FXSYS_memset(tempkey, 0, sizeof(tempkey));
+      memset(tempkey, 0, sizeof(tempkey));
       for (int j = 0; j < m_KeyLen; j++)
         tempkey[j] = enckey[j] ^ static_cast<uint8_t>(i);
       CRYPT_ArcFourCryptBlock(okeybuf, okeylen, tempkey, key_len);
@@ -567,7 +567,7 @@ void CPDF_SecurityHandler::OnCreate(CPDF_Dictionary* pEncryptDict,
         CRYPT_MD5Generate(digest, 16, digest);
     }
     uint8_t enckey[32];
-    FXSYS_memcpy(enckey, digest, key_len);
+    memcpy(enckey, digest, key_len);
     for (uint32_t i = 0; i < 32; i++) {
       passcode[i] = i < user_size ? user_pass[i] : defpasscode[i - user_size];
     }
@@ -587,7 +587,7 @@ void CPDF_SecurityHandler::OnCreate(CPDF_Dictionary* pEncryptDict,
                  key_len, false, pIdArray);
   if (m_Revision < 3) {
     uint8_t tempbuf[32];
-    FXSYS_memcpy(tempbuf, defpasscode, 32);
+    memcpy(tempbuf, defpasscode, 32);
     CRYPT_ArcFourCryptBlock(tempbuf, 32, m_EncryptKey, key_len);
     pEncryptDict->SetNewFor<CPDF_String>("U", CFX_ByteString(tempbuf, 32),
                                          false);
@@ -660,7 +660,7 @@ void CPDF_SecurityHandler::AES256_SetPassword(CPDF_Dictionary* pEncryptDict,
     }
     CRYPT_SHA256Finish(&sha2, digest1);
   }
-  FXSYS_memcpy(digest1 + 32, digest, 16);
+  memcpy(digest1 + 32, digest, 16);
   pEncryptDict->SetNewFor<CPDF_String>(bOwner ? "O" : "U",
                                        CFX_ByteString(digest1, 48), false);
   if (m_Revision >= 6) {
@@ -678,7 +678,7 @@ void CPDF_SecurityHandler::AES256_SetPassword(CPDF_Dictionary* pEncryptDict,
   uint8_t* aes = FX_Alloc(uint8_t, 2048);
   CRYPT_AESSetKey(aes, 16, digest1, 32, true);
   uint8_t iv[16];
-  FXSYS_memset(iv, 0, 16);
+  memset(iv, 0, 16);
   CRYPT_AESSetIV(aes, iv);
   CRYPT_AESEncrypt(aes, digest1, key, 32);
   FX_Free(aes);
@@ -706,7 +706,7 @@ void CPDF_SecurityHandler::AES256_SetPerms(CPDF_Dictionary* pEncryptDict,
   uint8_t* aes = FX_Alloc(uint8_t, 2048);
   CRYPT_AESSetKey(aes, 16, key, 32, true);
   uint8_t iv[16], buf1[16];
-  FXSYS_memset(iv, 0, 16);
+  memset(iv, 0, 16);
   CRYPT_AESSetIV(aes, iv);
   CRYPT_AESEncrypt(aes, buf1, buf, 16);
   FX_Free(aes);
diff --git a/core/fpdfapi/parser/cpdf_stream.cpp b/core/fpdfapi/parser/cpdf_stream.cpp
index d62b45641b..532fd753f8 100644
--- a/core/fpdfapi/parser/cpdf_stream.cpp
+++ b/core/fpdfapi/parser/cpdf_stream.cpp
@@ -57,7 +57,7 @@ void CPDF_Stream::InitStream(const uint8_t* pData,
   m_pFile = nullptr;
   m_pDataBuf.reset(FX_Alloc(uint8_t, size));
   if (pData)
-    FXSYS_memcpy(m_pDataBuf.get(), pData, size);
+    memcpy(m_pDataBuf.get(), pData, size);
   m_dwSize = size;
   if (m_pDict)
     m_pDict->SetNewFor<CPDF_Number>("Length", static_cast<int>(m_dwSize));
@@ -101,7 +101,7 @@ void CPDF_Stream::SetData(const uint8_t* pData, uint32_t size) {
   m_bMemoryBased = true;
   m_pDataBuf.reset(FX_Alloc(uint8_t, size));
   if (pData)
-    FXSYS_memcpy(m_pDataBuf.get(), pData, size);
+    memcpy(m_pDataBuf.get(), pData, size);
   m_dwSize = size;
   if (!m_pDict)
     m_pDict = pdfium::MakeUnique<CPDF_Dictionary>();
@@ -117,7 +117,7 @@ bool CPDF_Stream::ReadRawData(FX_FILESIZE offset,
     return m_pFile->ReadBlock(buf, offset, size);
 
   if (m_pDataBuf)
-    FXSYS_memcpy(buf, m_pDataBuf.get() + offset, size);
+    memcpy(buf, m_pDataBuf.get() + offset, size);
 
   return true;
 }
diff --git a/core/fpdfapi/parser/cpdf_stream_acc.cpp b/core/fpdfapi/parser/cpdf_stream_acc.cpp
index 423de7c571..59ac289b7c 100644
--- a/core/fpdfapi/parser/cpdf_stream_acc.cpp
+++ b/core/fpdfapi/parser/cpdf_stream_acc.cpp
@@ -82,6 +82,6 @@ std::unique_ptr<uint8_t, FxFreeDeleter> CPDF_StreamAcc::DetachData() {
     return p;
   }
   std::unique_ptr<uint8_t, FxFreeDeleter> p(FX_Alloc(uint8_t, m_dwSize));
-  FXSYS_memcpy(p.get(), m_pData, m_dwSize);
+  memcpy(p.get(), m_pData, m_dwSize);
   return p;
 }
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.cpp b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
index 54fb89a48b..67c0977cfe 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
@@ -645,13 +645,13 @@ std::unique_ptr<CPDF_Stream> CPDF_SyntaxParser::ReadStream(
         m_Pos = pos.ValueOrDie();
 
       m_Pos += ReadEOLMarkers(m_Pos);
-      FXSYS_memset(m_WordBuffer, 0, kEndStreamStr.GetLength() + 1);
+      memset(m_WordBuffer, 0, kEndStreamStr.GetLength() + 1);
       GetNextWordInternal(nullptr);
       // Earlier version of PDF specification doesn't require EOL marker before
       // 'endstream' keyword. If keyword 'endstream' follows the bytes in
       // specified length, it signals the end of stream.
-      if (FXSYS_memcmp(m_WordBuffer, kEndStreamStr.raw_str(),
-                       kEndStreamStr.GetLength()) == 0) {
+      if (memcmp(m_WordBuffer, kEndStreamStr.raw_str(),
+                 kEndStreamStr.GetLength()) == 0) {
         bSearchForKeyword = false;
       }
     }
@@ -750,14 +750,13 @@ std::unique_ptr<CPDF_Stream> CPDF_SyntaxParser::ReadStream(
   auto pStream =
       pdfium::MakeUnique<CPDF_Stream>(std::move(pData), len, std::move(pDict));
   streamStartPos = m_Pos;
-  FXSYS_memset(m_WordBuffer, 0, kEndObjStr.GetLength() + 1);
+  memset(m_WordBuffer, 0, kEndObjStr.GetLength() + 1);
   GetNextWordInternal(nullptr);
 
   int numMarkers = ReadEOLMarkers(m_Pos);
   if (m_WordSize == static_cast<unsigned int>(kEndObjStr.GetLength()) &&
       numMarkers != 0 &&
-      FXSYS_memcmp(m_WordBuffer, kEndObjStr.raw_str(),
-                   kEndObjStr.GetLength()) == 0) {
+      memcmp(m_WordBuffer, kEndObjStr.raw_str(), kEndObjStr.GetLength()) == 0) {
     m_Pos = streamStartPos;
   }
   return pStream;
diff --git a/core/fpdfapi/parser/fpdf_parser_decode.cpp b/core/fpdfapi/parser/fpdf_parser_decode.cpp
index af1f452afd..a1698aedde 100644
--- a/core/fpdfapi/parser/fpdf_parser_decode.cpp
+++ b/core/fpdfapi/parser/fpdf_parser_decode.cpp
@@ -114,7 +114,7 @@ uint32_t A85Decode(const uint8_t* src_buf,
       continue;
 
     if (ch == 'z') {
-      FXSYS_memset(dest_buf + dest_size, 0, 4);
+      memset(dest_buf + dest_size, 0, 4);
       state = 0;
       res = 0;
       dest_size += 4;
@@ -226,9 +226,9 @@ uint32_t RunLengthDecode(const uint8_t* src_buf,
       if (buf_left < copy_len) {
         uint32_t delta = copy_len - buf_left;
         copy_len = buf_left;
-        FXSYS_memset(dest_buf + dest_count + copy_len, '\0', delta);
+        memset(dest_buf + dest_count + copy_len, '\0', delta);
       }
-      FXSYS_memcpy(dest_buf + dest_count, src_buf + i + 1, copy_len);
+      memcpy(dest_buf + dest_count, src_buf + i + 1, copy_len);
       dest_count += src_buf[i] + 1;
       i += src_buf[i] + 2;
     } else {
@@ -236,7 +236,7 @@ uint32_t RunLengthDecode(const uint8_t* src_buf,
       if (i < src_size - 1) {
         fill = src_buf[i + 1];
       }
-      FXSYS_memset(dest_buf + dest_count, fill, 257 - src_buf[i]);
+      memset(dest_buf + dest_count, fill, 257 - src_buf[i]);
       dest_count += 257 - src_buf[i];
       i += 2;
     }
diff --git a/core/fpdfapi/render/cpdf_dibsource.cpp b/core/fpdfapi/render/cpdf_dibsource.cpp
index cb8e9c9eee..12bfadb19d 100644
--- a/core/fpdfapi/render/cpdf_dibsource.cpp
+++ b/core/fpdfapi/render/cpdf_dibsource.cpp
@@ -999,7 +999,7 @@ const uint8_t* CPDF_DIBSource::GetScanline(int line) const {
   }
   if (!pSrcLine) {
     uint8_t* pLineBuf = m_pMaskedLine ? m_pMaskedLine : m_pLineBuf;
-    FXSYS_memset(pLineBuf, 0xFF, m_Pitch);
+    memset(pLineBuf, 0xFF, m_Pitch);
     return pLineBuf;
   }
   if (m_bpc * m_nComponents == 1) {
@@ -1030,13 +1030,13 @@ const uint8_t* CPDF_DIBSource::GetScanline(int line) const {
       }
       return m_pMaskedLine;
     } else {
-      FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
+      memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
     }
     return m_pLineBuf;
   }
   if (m_bpc * m_nComponents <= 8) {
     if (m_bpc == 8) {
-      FXSYS_memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
+      memcpy(m_pLineBuf, pSrcLine, src_pitch_value);
     } else {
       uint64_t src_bit_pos = 0;
       for (int col = 0; col < m_Width; col++) {
@@ -1088,7 +1088,7 @@ const uint8_t* CPDF_DIBSource::GetScanline(int line) const {
                                      : 0;
       }
     } else {
-      FXSYS_memset(m_pMaskedLine, 0xFF, m_Pitch);
+      memset(m_pMaskedLine, 0xFF, m_Pitch);
     }
   }
   if (m_pColorSpace) {
@@ -1149,7 +1149,7 @@ void CPDF_DIBSource::DownSampleScanline(int line,
   int orig_Bpp = m_bpc * m_nComponents / 8;
   int dest_Bpp = dest_bpp / 8;
   if (!pSrcLine) {
-    FXSYS_memset(dest_scan, 0xFF, dest_Bpp * clip_width);
+    memset(dest_scan, 0xFF, dest_Bpp * clip_width);
     return;
   }
 
diff --git a/core/fpdfapi/render/cpdf_docrenderdata.cpp b/core/fpdfapi/render/cpdf_docrenderdata.cpp
index 1c430e8f0f..b34fa2caef 100644
--- a/core/fpdfapi/render/cpdf_docrenderdata.cpp
+++ b/core/fpdfapi/render/cpdf_docrenderdata.cpp
@@ -110,7 +110,7 @@ CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) {
   CPDF_TransferFunc* pTransfer = pTransferCounter->get();
   m_TransferFuncMap[pObj] = pTransferCounter;
   float output[kMaxOutputs];
-  FXSYS_memset(output, 0, sizeof(output));
+  memset(output, 0, sizeof(output));
   float input;
   int noutput;
   for (int v = 0; v < 256; ++v) {
diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index f2d888bdeb..97bb0ac4a2 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -137,7 +137,7 @@ void DrawAxialShading(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap,
       std::max(CountOutputs(funcs), pCS->CountComponents());
   CFX_FixedBufGrow<float, 16> result_array(total_results);
   float* pResults = result_array;
-  FXSYS_memset(pResults, 0, total_results * sizeof(float));
+  memset(pResults, 0, total_results * sizeof(float));
   uint32_t rgb_array[SHADING_STEPS];
   for (int i = 0; i < SHADING_STEPS; i++) {
     float input = (t_max - t_min) * i / SHADING_STEPS + t_min;
@@ -220,7 +220,7 @@ void DrawRadialShading(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap,
       std::max(CountOutputs(funcs), pCS->CountComponents());
   CFX_FixedBufGrow<float, 16> result_array(total_results);
   float* pResults = result_array;
-  FXSYS_memset(pResults, 0, total_results * sizeof(float));
+  memset(pResults, 0, total_results * sizeof(float));
   uint32_t rgb_array[SHADING_STEPS];
   for (int i = 0; i < SHADING_STEPS; i++) {
     float input = (t_max - t_min) * i / SHADING_STEPS + t_min;
@@ -345,7 +345,7 @@ void DrawFuncShading(const CFX_RetainPtr<CFX_DIBitmap>& pBitmap,
       std::max(CountOutputs(funcs), pCS->CountComponents());
   CFX_FixedBufGrow<float, 16> result_array(total_results);
   float* pResults = result_array;
-  FXSYS_memset(pResults, 0, total_results * sizeof(float));
+  memset(pResults, 0, total_results * sizeof(float));
   for (int row = 0; row < height; row++) {
     uint32_t* dib_buf = (uint32_t*)(pBitmap->GetBuffer() + row * pitch);
     for (int column = 0; column < width; column++) {
@@ -487,7 +487,7 @@ void DrawFreeGouraudShading(
     return;
 
   CPDF_MeshVertex triangle[3];
-  FXSYS_memset(triangle, 0, sizeof(triangle));
+  memset(triangle, 0, sizeof(triangle));
 
   while (!stream.BitStream()->IsEOF()) {
     CPDF_MeshVertex vertex;
@@ -685,7 +685,7 @@ int BiInterpolImpl(int c0,
 }
 
 struct Coon_Color {
-  Coon_Color() { FXSYS_memset(comp, 0, sizeof(int) * 3); }
+  Coon_Color() { memset(comp, 0, sizeof(int) * 3); }
   int comp[3];
 
   void BiInterpol(Coon_Color colors[4],
@@ -848,11 +848,11 @@ void DrawCoonPatchMeshes(
       for (i = 0; i < 4; i++) {
         tempCoords[i] = coords[(flag * 3 + i) % 12];
       }
-      FXSYS_memcpy(coords, tempCoords, sizeof(tempCoords));
+      memcpy(coords, tempCoords, sizeof(tempCoords));
       Coon_Color tempColors[2];
       tempColors[0] = patch.patch_colors[flag];
       tempColors[1] = patch.patch_colors[(flag + 1) % 4];
-      FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
+      memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
     }
     for (i = iStartPoint; i < point_count; i++) {
       if (!stream.CanReadCoords())
@@ -2586,7 +2586,7 @@ CFX_RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask(
         if (!num_floats.IsValid()) {
           return nullptr;
         }
-        FXSYS_memset(pFloats, 0, num_floats.ValueOrDie());
+        memset(pFloats, 0, num_floats.ValueOrDie());
         size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
         for (size_t i = 0; i < count; i++) {
           pFloats[i] = pBC->GetNumberAt(i);
@@ -2651,7 +2651,7 @@ CFX_RetainPtr<CFX_DIBitmap> CPDF_RenderStatus::LoadSMask(
       dest_buf[i] = transfers[src_buf[i]];
     }
   } else {
-    FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height);
+    memcpy(dest_buf, src_buf, dest_pitch * height);
   }
   return pMask;
 }