[Boost-users] [Format] Asserts with non-default structure packing in 1.37 (MSVC)

Subject: [Boost-users] [Format] Asserts with non-default structure packing in 1.37 (MSVC)
From: Daniel James (gmane.junk001_at_[hidden])
Date: 2008-12-30 06:28:03

I'm using MS Visual Studio 2005 to work on some legacy code that has 
its origins back in 16-bit Windows, and relies on the /Zp2 switch to 
align fields in structures in the same way as earlier versions.

One of the more recent modules uses boost::format, and this has 
compiled correctly and been working with Boost 1.34.1. I'm trying to 
bring the project up-to-date using 1.37, and I am getting 
BOOST_STATIC_ASSERT reports when I include boost/format.hpp.

I don't have to *use* format in my code, just including 
boost/format.hpp in a "Hello world" program is sufficient to trigger 
the error when using /Zp2

Is this to be expected?

Is there a workaround? 

I know we should really use explicit pack pragmas around the structures 
that have to be packed in this particular way, but there are too many 
of them -- and they're defined all over the code -- for this to be a 
simple or safe process ... /Zp2 has always worked fine in the past.

Cheers,
 Daniel
 (Just a user -- not to be confused with the Boost contributor of the 
same name)