archive component MinGW/MSYS compile warning

[feiyunw@…]

Component archive is one of two boost components which generate compile warnings in MinGW/MSYS with gcc-4.5.2:

      1 ./boost/archive/detail/basic_iarchive.hpp:40:44: warning: type attributes ignored after type is already defined
      1 ./boost/archive/detail/basic_iarchive.hpp:41:44: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/basic_iserializer.hpp:42:44: warning: type attributes ignored after type is already defined
      5 ./boost/archive/detail/basic_iserializer.hpp:43:44: warning: type attributes ignored after type is already defined
      1 ./boost/archive/detail/basic_oarchive.hpp:42:44: warning: type attributes ignored after type is already defined
      1 ./boost/archive/detail/basic_oarchive.hpp:43:44: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/basic_oserializer.hpp:43:44: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/basic_pointer_iserializer.hpp:40:44: warning: type attributes ignored after type is already defined
      2 ./boost/archive/detail/basic_pointer_iserializer.hpp:41:44: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/basic_pointer_oserializer.hpp:39:44: warning: type attributes ignored after type is already defined
      7 ./boost/archive/detail/basic_pointer_oserializer.hpp:40:44: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/interface_iarchive.hpp:30:56: warning: type attributes ignored after type is already defined
      6 ./boost/archive/detail/interface_oarchive.hpp:32:56: warning: type attributes ignored after type is already defined
      1 ./boost/archive/polymorphic_iarchive.hpp:49:48: warning: type attributes ignored after type is already defined
      1 ./boost/archive/polymorphic_iarchive.hpp:50:48: warning: type attributes ignored after type is already defined
      1 ./boost/archive/polymorphic_oarchive.hpp:48:48: warning: type attributes ignored after type is already defined
      1 ./boost/archive/polymorphic_oarchive.hpp:49:48: warning: type attributes ignored after type is already defined

The preceding numbers are the numbers of occurence.
It is very annoying when developers use it in their products.

[feiyunw@…]

boost build log with MinGW/gcc-4.5.2

[Robert Ramey]

hmmm - looks like this ocurrs with -Wall. Picking through all the AUTO_LIB macros to suppress this at just the right time is quite a tedious and error prone process. If you want to do this, re-run the tests and post a patch I'll have a look at it, but I short of that I don't think I can do anything.

Robert Ramey