Re: [Boost-users] boost filesystem

31 Oct 2006

      Replies are at the end of this message:
Aubrey, Jason wrote:
...
Hi,
When I run the following program it runs successfully but throws an 
exception during shutdown.  I don't know why, but it seems that the 
call to boost::filesystem::file_size() is corrupting memory somehow.
This example only shows the call to file_size() but I think I've seen 
similar trouble with other calls within boost::filesystem.
Am I doing something wrong here or is this a bug?
Regards,
Jason Aubrey
----------------------
Environment: 
  OS: Win2k
  Compiler: VS7.1
  Boost: v1.33.1
----------------------
#include  #include <fstream>
int main(int, char**)
{
    // Create a file
    using namespace std;
    const string fileName("/temp/test.txt");
    ofstream file;
    file.open(fileName.c_str());
    const string message("this is a test");
    file << message;
    file.close();
const boost::intmax_t fileSize =
boost::filesystem::file_size(fileName);
if( fileSize != message.size() )
        throw std::exception("Bad result");
return 0;   
}
Either I'm missing something, or...

file_size takes a path reference as its calling argument. You're passing
a string. How does this even compile?

- Rush
_______________________________________________

Thanks for the Reply Rush.

If I modify the above code to contain the following I still see the same
behavior:
	const boost::filesystem::path filePath(fileName);
	const boost::intmax_t fileSize =
boost::filesystem::file_size(filePath);

Regards,
Jason Aubrey
_______________________________________________

Would you be able to print out what the values of message.size() and
fileSize are, right before you do that comparison?

Thanks,
Lawrence Spector
_______________________________________________

Both fileSize and message.size() are 14.  The exception thrown is not a
result of the if-block, but the result of a check by the runtime when it
does its cleanup during program shutdown.

Regards,
Jason Aubrey