[Boost-users] [filesystem] Should fstream really 'force' in+out mode?

From: Sachin Garg (schngrg_at_[hidden])
Date: 2008-08-27 16:34:09

I want to open a read only file in ios::in mode using fstream but its
open forces in+out mode, causing my open to fail when it could have
succeeded.

In boost::filesystem::fstream::open, the file open mode is modified to
  mode | std::ios_base::in | std::ios_base::out

Is this really necessary or can this be changed in future? Atleast
with MSVC 9.0, std::fstream isn't forcing such behavior.

SG