Re: [Boost-users] Boost.Unordered throws 64-bit portability warnings

21 May 2009


      2009/5/21 Dominique Devienne :
...
On Thu, May 21, 2009 at 2:36 PM, Daniel James  wrote:
...
2009/5/21 Dominique Devienne :
...
#if ACME_SIZEOF_SIZE_T == 4
       // Avoid warning C4267: 'argument' :
       // conversion from 'size_t' to 'unsigned int', possible loss of data
       boost::hash_combine(
           seed, static_cast<unsigned int>(hash_value(member_))
       );
#else
       boost::hash_combine(seed, hash_value(member_));
#endif
Doesn't 'boost::hash_combine(seed, member_)' work?
Never meant to imply it doesn't work, sorry.
I wasn't clear, you're calling 'boost::hash_combine(seed,
hash_value(member_))', but normally you should be able to just call
'boost::hash_combine(seed, member_)' - hash_combine should hash
'member_' for you.

Daniel