Re: [boost] [filesystem] wfstream file open does not create file in std::ios_base::out mode

Subject: Re: [boost] [filesystem] wfstream file open does not create file in std::ios_base::out mode
From: Beman Dawes (bdawes_at_[hidden])
Date: 2010-06-18 20:44:40

On Thu, Jun 17, 2010 at 9:48 AM, Ramakrishna, Kirankumar IN BLR SISL
<Kiran.Ramakrishna_at_[hidden]> wrote:
> Hello,
>
> I am using boost version 1.42 and the below code is tested on Windows Xp SP3 and Suse 11.2
>
> The below code creates new file when opened using fstream object, but fails to create when opened using wftream object.
> This behavior is consistent across platforms (Windows and Linux).
> Also the error code which I get after fileHandleW.open call is,
>
>
>  1.  ERROR_FILE_NOT_FOUND for  std::ios_base::out
>  2.  ERROR_NEGATIVE_SEEK for std::ios_base::app
>
> In case of append mode, the file gets created. But still I get the above mentioned error code.
>
> #include "boost/filesystem/fstream.hpp"
>
> int
> main()
> {
>    boost::filesystem::path   pA("C:\\testA.txt");
>    boost::filesystem::wpath  pW(L"C:\\testW.txt");
>    boost::filesystem::fstream fileHandleA;
>    boost::filesystem::wfstream fileHandleW;
>    fileHandleA.open(pA, std::ios_base::out);
>    fileHandleW.open(pW, std::ios_base::out);
>    return 0;
> }

I didn't have a copy of 1.42 handy, so tested against the current
trunk, using VC++ 9. Your program worked fine, and the two files were
created.

Are you still having problems? Perhaps upgrading to 1.43 would help.

--Beman