[Boost-bugs] [Boost C++ Libraries] #3441: boost::pool cast alignment warnings on Sparc

Subject: [Boost-bugs] [Boost C++ Libraries] #3441: boost::pool cast alignment warnings on Sparc
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-09-12 16:26:56

#3441: boost::pool cast alignment warnings on Sparc
----------------------------------------+-----------------------------------
 Reporter:  Evan Jones <evanj@…>        |       Owner:  cnewbold
     Type:  Bugs                        |      Status:  new     
Milestone:  Boost 1.41.0                |   Component:  pool    
  Version:  Boost 1.40.0                |    Severity:  Problem 
 Keywords:                              |  
----------------------------------------+-----------------------------------
 This may not be fixable, but I generally have been compiling my code on
 Sparc using GCC's -Wcast-align to catch places where code may attempt to
 make an unaligned access. When I use boost::object_pool, I get the
 compiler warnings below. I don't know of any "clean" way to avoid this.
 I've added a pragma to pool.hpp to suppress the warning when this file is
 included.

 System: Solaris 10, Sparc (where alignment matters)
 Compiler: GCC 4.4.0
 Boost: Boost 1.40.0
 Command line: gcc -Wcast-align -c objpooltest.cc -Iboost_1_40_0


 In file included from boost_1_40_0/boost/pool/object_pool.hpp:15,
                  from objpooltest.cc:1:
 boost_1_40_0/boost/pool/pool.hpp: In member function ‘char*&
 boost::details::PODptr<SizeType>::next_ptr() const [with SizeType =
 unsigned int]’:
 boost_1_40_0/boost/pool/pool.hpp:121:   instantiated from
 ‘boost::details::PODptr<SizeType> boost::details::PODptr<SizeType>::next()
 const [with SizeType = unsigned int]’
 boost_1_40_0/boost/pool/object_pool.hpp:116:   instantiated from
 ‘boost::object_pool<T, UserAllocator>::~object_pool() [with T = int,
 UserAllocator = boost::default_user_allocator_new_delete]’
 objpooltest.cc:4:   instantiated from here
 boost_1_40_0/boost/pool/pool.hpp:118: warning: cast from ‘char*’ to
 ‘char**’ increases required alignment of target type
 boost_1_40_0/boost/pool/pool.hpp: In member function ‘SizeType&
 boost::details::PODptr<SizeType>::next_size() const [with SizeType =
 unsigned int]’:
 boost_1_40_0/boost/pool/pool.hpp:121:   instantiated from
 ‘boost::details::PODptr<SizeType> boost::details::PODptr<SizeType>::next()
 const [with SizeType = unsigned int]’
 boost_1_40_0/boost/pool/object_pool.hpp:116:   instantiated from
 ‘boost::object_pool<T, UserAllocator>::~object_pool() [with T = int,
 UserAllocator = boost::default_user_allocator_new_delete]’
 objpooltest.cc:4:   instantiated from here
 boost_1_40_0/boost/pool/pool.hpp:116: warning: cast from ‘char*’ to
 ‘unsigned int*’ increases required alignment of target type

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/3441>
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