Re: Fastcode StrCopy B&V 2.0

From: Aleksandr Sharahov (alsha-on-mail333.com)
Date: 05/31/04

  • Next message: Aleksandr Sharahov: "Re: Fastcode StrCopy B&V 2.0" 
    Date: Mon, 31 May 2004 15:58:52 +0400

    Some correctons:

    procedure TForm1.Button1Click(Sender: TObject);
    const
      block= 4*1024;
    var
      protect: dword;
      s: string;
      p: pointer;
    begin
      SetLength(s,2*block);
      FillChar(s[1],Length(s),0);
      //make p points at the end of first part of s
      p:=pointer(s);
      integer(p):=(integer(p) and -block) + block - 1;
      //protect the next block
      VirtualProtect(pchar(p)+1,1,PAGE_NOACCESS,@protect);
      try
        ShowMessage(IntToStr(integer(p^)));
      except
        VirtualProtect(pchar(p)+1,1,protect,@protect);
      end;
    end;

  • Next message: Aleksandr Sharahov: "Re: Fastcode StrCopy B&V 2.0"

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