[boost] recursive_directory_iterator assertion failure

From: eric ehlers (eric.ehlers_at_[hidden])
Date: 2007-09-04 04:52:10

Hello,

Using boost version 1.34.1 I get an assertion failure when comparing
recursive_directory_iterator to the end iterator if the corresponding
path comprises an empty directory.

        // a directory that is not empty - runs OK
        //boost::filesystem::path boostPath("C:\\test_notempty");
        // a directory that is empty - crashes
        boost::filesystem::path boostPath("C:\\test_empty");

        if (boost::filesystem::is_directory(boostPath)) {
            boost::filesystem::recursive_directory_iterator end_itr;
            for (boost::filesystem::recursive_directory_iterator
itr(boostPath); itr != end_itr; ++itr) {
                std::cout << itr->path().string() << std::endl;
            }
        }

Assertion failed: m_imp.get() && "attempt to dereference end iterator", file c:\
program files\boost\boost_1_34_1\boost\filesystem\operations.hpp, line 849

This issue has been reported before:

http://listarchives.boost.org/Archives/boost/2006/10/111230.php

What's the workaround?  I can't seem to find any way to inspect the
path or its iterator to distinguish an empty directory from a nonempty
one without crashing the program.

Thanks,
Eric