Hmm that's even more interesting, maybe a 2k vs. XP compability issue? The file fails when trying to open on my system. I don't have a 2k system to try it on, so I don't know how much more assistance I can be. Based on the posts so far in this thread, though, I get the impression that different users are getting different results, which is definitely concerning. If I get a chance, I'll try it on my Fedora system tonight and see what happens. In the meantime, good luck. -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Aubrey, Jason Sent: Tuesday, October 31, 2006 4:43 PM To: boost-users@lists.boost.org Subject: Re: [Boost-users] boost filesystem Thanks for your suggestion Lawrence but I don't think it's related to the problem. I added the following after opening the file but it doesn't throw (since the file is valid): if( !file.is_open() ) throw std::exception("Unable to open file"); To prove that the file is valid: 1) I verified that the program creates the file 2) main() completes as expected. The following is in regard to Rush's comment: The call stack when trouble occurs is as follows: msvcr71d.dll!operator delete(void * pUserData=0x00343418) msvcp71d.dll!std::allocator<char>::deallocate(char * _Ptr=0x00343418, unsigned int __formal=48) msvcp71d.dll!std::string::_Tidy(bool _Built=true, unsigned int _Newsize=0) msvcp71d.dll!std::string::~string() TestsD.exe!$E2() msvcr71d.dll!doexit(int code=0, int quick=0, int retcaller=0) msvcr71d.dll!exit(int code=0) TestsD.exe!mainCRTStartup() kernel32.dll!7c816d4f() ntdll.dll!7c915b4f() kernel32.dll!7c8399f3() The offending code within delete() is: _ASSERTE(_BLOCK_TYPE_IS_VALID(pHead->nBlockUse)); Unfortunately, I couldn't make any sense of the data in or near the bad block. Regards, Jason ---------------------- Environment: OS: Win2k Compiler: VS7.1 Boost: v1.33.1 ---------------------- #include #include <fstream> // Contrary to simplicity I've enhanced the following to satisfy suggestions int main(int, char**) { // Create a file using namespace std; const string fileName("/temp/test.txt"); ofstream file; file.open(fileName.c_str()); if( !file.is_open() ) throw std::exception("Unable to open file"); const string message("this is a test"); file << message; file.close(); const boost::filesystem::path filePath(fileName); const boost::intmax_t fileSize = boost::filesystem::file_size(filePath); if( fileSize != message.size() ) throw std::exception("Bad result"); return 0; // This line is reached without trouble } _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users