[boost] [serialization] binary archives and text/binary streams

From: Russell Hind (rh_gmane_at_[hidden])
Date: 2004-10-26 05:42:04

There seems to be a problem on win32 where if you use a stream opened in 
text mode for a binary archive, you get errors.  The following code 
asserts because 'd' appears to have a random value on the way back in.

If you open both streams in binary mode then the code runs fine.  XML 
archives don't have the same problem.

I realise you shouldn't use a binary archive with a text stream, but is 
there anyway to catch this at compile or run time?  Otherwise you just 
end up with a corrupted archive?

Thanks

Russell

double d = -6.7;
     {
     ofstream ofs("C:\\test.dat");
     archive::binary_oarchive oa(ofs);
         oa & d;
     }

     d = 0.0;
     {
     ifstream ifs("C:\\test.dat");
     archive::binary_iarchive ia(ifs);
         ia & d;
     }
     assert(std::abs(d + 6.7) < 0.0001);