From http://pocoproject.org/forum/viewtopic.php?f=10&t=5928

postby gurami1 » Mon Jul 08, 2013 3:46 pm

Bug in RecursiveDirectoryIterator and SortedDirectoryIterator (the “++ ()” operator throws and there are no way to advance )
Platform: Windows 7 64bit
Poco version : 1.5.2

Here is simple test:

        //Poco::SortedDirectoryIterator dirIterator(p);
   //Poco::SortedDirectoryIterator end;

   //Poco::SimpleRecursiveDirectoryIterator dirIterator(p);
   //Poco::SimpleRecursiveDirectoryIterator end;

   Poco::Path p ("c:\\");
   Poco::SiblingsFirstRecursiveDirectoryIterator  dirIterator(p);
   Poco::SiblingsFirstRecursiveDirectoryIterator end;   

   while (dirIterator != end)
   {
      try
      {
         std::cout << dirIterator->path() <<  std::endl;
         ++dirIterator;
      }
      catch (Poco::FileException &exc)
      {
         std::cout << exc.displayText() <<  std::endl;
                        break;
      }
        }

The “++dirIterator“ throws “File access error: sharing violation: c:\hiberfil.sys” for c:\hiberfil.sys file.
Here is stack:

PocoFoundation64d.dll!Poco::FileImpl::isDirectoryImpl() Line 185 C++
PocoFoundation64d.dll!Poco::File::isDirectory() Line 160 C++
PocoFoundation64d.dll!Poco::SiblingsFirstTraverse::next(std::stackPoco::DirectoryIterator,std::deque<Poco::DirectoryIterator,std::allocator<Poco::DirectoryIterator > > * itStack, bool * isFinished) Line 133 C++
FoundationUT.exe!Poco::RecursiveDirectoryIteratorImplPoco::SiblingsFirstTraverse::next() Line 107 C++
FoundationUT.exe!Poco::RecursiveDirectoryIteratorPoco::SiblingsFirstTraverse::operator++() Line 208 C++

Poco::DirectoryIterator class works because implementation of ++ () operator doesn’t call IsDirectory().