[Boost-bugs] [Boost C++ Libraries] #3194: compiler warnings in VC9

Subject: [Boost-bugs] [Boost C++ Libraries] #3194: compiler warnings in VC9
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2009-06-20 01:29:14

#3194: compiler warnings in VC9
---------------------------------+------------------------------------------
 Reporter:  kfriddile@…          |       Owner:  dlwalker
     Type:  Bugs                 |      Status:  new     
Milestone:  Boost 1.40.0         |   Component:  crc     
  Version:  Boost 1.39.0         |    Severity:  Problem 
 Keywords:                       |  
---------------------------------+------------------------------------------
 The following code under VC9 with warning level 4 produces the warnings
 below. Warnings are not allowed on my project, and rather than wrapping
 boost includes with a #pragma directive, I'd rather these warnings just be
 suppressed in the code that's causing them.

 boost::uint32_t GenerateChecksum( const char* data, size_t length )
 {
   boost::crc_32_type computer;

   computer = std::for_each( data,
                             data + length,
                             computer );

   return computer();
 }

 2>C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(377)
 : warning C4245: 'initializing' : conversion from 'int' to 'const
 boost::detail::mask_uint_t<8>::least', signed/unsigned mismatch
 2>C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(400)
 : warning C4245: 'initializing' : conversion from 'int' to 'const
 boost::detail::mask_uint_t<16>::least', signed/unsigned mismatch
 2>C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(574)
 : warning C4244: 'return' : conversion from 'unsigned int' to 'unsigned
 char', possible loss of data
 2>        C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(574)
 : while compiling class template member function 'unsigned char
 boost::detail::crc_helper<Bits,DoReflect>::index(unsigned int,unsigned
 char)'
 2>        with
 2>        [
 2>            Bits=32,
 2>            DoReflect=true
 2>        ]
 2>        C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(836)
 : see reference to class template instantiation
 'boost::detail::crc_helper<Bits,DoReflect>' being compiled
 2>        with
 2>        [
 2>            Bits=32,
 2>            DoReflect=true
 2>        ]
 2>        C:\Documents and Settings\Administrator\My
 Documents\Development\development\third_party\boost\1_39_0\boost/crc.hpp(836)
 : while compiling class template member function
 'boost::crc_optimal<Bits,TruncPoly,InitRem,FinalXor,ReflectIn,ReflectRem>::crc_optimal(unsigned
 int)'
 2>        with
 2>        [
 2>            Bits=32,
 2>            TruncPoly=79764919,
 2>            InitRem=-1,
 2>            FinalXor=-1,
 2>            ReflectIn=true,
 2>            ReflectRem=true
 2>        ]
 2>        ..\..\..\..\components\libs\checksum\source\Checksum.cpp(12) :
 see reference to class template instantiation
 'boost::crc_optimal<Bits,TruncPoly,InitRem,FinalXor,ReflectIn,ReflectRem>'
 being compiled
 2>        with
 2>        [
 2>            Bits=32,
 2>            TruncPoly=79764919,
 2>            InitRem=-1,
 2>            FinalXor=-1,
 2>            ReflectIn=true,
 2>            ReflectRem=true
 2>        ]

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3194>
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