[boost] [filesystem] exists() throws exeption on existing but locked file on windows

From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2007-04-13 12:36:05

Hi all,

What's the rationale of throwing an exception from
boost::filesystem::exists(somepath); when 'somepath' exists but is locked by
some other process (at least on Windows)? A simple way to reproduce the
effect is:

#include <iostream>
#include <boost/filesystem.hpp>

int main()
{
    boost::filesystem::path p("C:\\pagefile.sys");
    try {
        boost::filesystem::exists(p);
    }
    catch (...) {
        std::cerr << "Ooops..." << std::endl;
    }
    return 0;
}

Throwing an exception doesn't seem to be the right thing here, since the
file actually exists, so I'ld expect to get a 'true' back from exists().

Regards Hartmut