Re: [Boost-users] [Serialization] Sometimes Fails Reading Binary File

Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading Binary File
From: Robert McCullough (rob_at_[hidden])
Date: 2010-06-16 11:28:08

Steven,
I was able to compile and run my app on Windows 7.
Debugging using Visual Studio 2008 and using Boost 1.43.0 with the patch
from https://svn.boost.org/trac/boost/ticket/4257

The value of l at line 56 of boost/archive/impl/basic_binary_archive.ipp is
I = 369098752;
file_signature = ""
Line 56:   if(l == std::strlen(BOOST_ARCHIVE_SIGNATURE())) {      Fails!
Line  70:  if(file_signature != BOOST_ARCHIVE_SIGNATURE()) is true so, the
archive_exception::invalid_signature is thrown on line 73.

On my Window 7 PC,
sizeof(size_t) == 4
sizeof(library_version_type)  could not find definition of
library_version_type
sizeof(int) == 4
sizeof(long) == 4
sizeof(float) == 4
sizeof(double) == 8

Thanks,
Robert

> -----Original Message-----
> From: boost-users-bounces_at_[hidden] [mailto:boost-users-
> bounces_at_[hidden]] On Behalf Of Steven Watanabe
> Sent: Tuesday, June 15, 2010 8:41 PM
> To: boost-users_at_[hidden]
> Subject: Re: [Boost-users] [Serialization] Sometimes Fails Reading Binary
File
> 
> AMDG
> 
> Robert McCullough wrote:
> > Answers to your questions:
> > a) it yields different behavior for the same archive.
> > b) See attached source LegacyMonitorPersistentData.h
> > c) See attached source PersistentData.h
> > d)  I have not tried that.  I will give this a try.
> > This is what I am testing.
> > I have this archive file ^Press.dat. that was created once by our
customer.
> > I try to de-serializing using the loadPersistentData() function and it
> > works sometimes, but about every third try it throw one of the
> > exceptions.
> >
> 
> Okay.  What version of Boost are you using?  Can you step through
> basic_binary_iarchive<Archive>::init() in a debugger?  It's at
> boost/archive/impl/basic_binary_archive.ipp line 50.
> What you ought to see is:
> l is set to 22.
> file_signature is set to "serialization::archive"
> input_library_version is set to 5
> 
> "invalid signature" indicates that file_signature is wrong.
> 
> Some info about the archive that you might want to verify:
> The platform is big-endian
> sizeof(size_t) == 4
> sizeof(library_version_type) == 1.
> sizeof(int) == 4
> sizeof(long) == 4
> sizeof(float) == 4
> sizeof(double) == 8
> 
> In Christ,
> Steven Watanabe
> 
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