Re: [boost] [serialization] Cross-compiled binary archive

From: Zrubavel Zodikovich (g729_at_[hidden])
Date: 2006-09-11 06:20:49

Thanks, Robert, that worked. I'll summarize the case here in case anyone 
encounters similar problem.

We needed to read binary archives created on a different platform. 
Changing the code to use portable_binary_archive was not an option - the 
data was already written to disk. The problem turned out to be in string 
serialization code, which depended on the size of std::size_t type. 
Therefore, replacing the std::size_t with unsigned int in these two 
files allowed us to read the archive on 64 bit platform.

* boost\archive\impl\basic_binary_iprimitive.ipp
* boost\archive\impl\basic_binary_oprimitive.ipp

The sizes of different types on our platforms were as follows :

type	vc8	vc8-x64
------	------	-------
void*	4	8
size_t	4	8
int	4	4

Robert Ramey wrote:
> That's the obvious place.
> 
> I don't think anything is dependent upon pointer size - as pointers 
> themselves are not stored.
> 
> I suspect the problem will be when using integers - I would expect the sizes 
> of these to change when moving to 64 bit platforms. After all size_t is an 
> integer.  If it were me I would just forget it.  The best would be to just 
> convert the binary archives into portable binary archives or something else. 
> That is, if you want portability - don't use binary archive which optimized 
> for speed.
> 
> Robert Ramey