Re: [Boost-bugs] [Boost C++ Libraries] #8057: Add constexpr + noexcept for atomic

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8057: Add constexpr + noexcept for atomic
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-02-23 15:10:31

#8057: Add constexpr + noexcept for atomic
-------------------------------+--------------------------------------------
  Reporter:  viboes            |       Owner:  timblechmann
      Type:  Feature Requests  |      Status:  new         
 Milestone:  Boost 1.54.0      |   Component:  atomic      
   Version:  Boost 1.53.0      |    Severity:  Problem     
Resolution:                    |    Keywords:              
-------------------------------+--------------------------------------------
Changes (by andysem):

 * cc: Andrey.Semashev@… (added)

Comment:

 The memcpy is needed when the value type is a struct. The struct size may
 not match exactly the storage_type (e.g. struct s { char a[ 3 ]; };), so
 we have to zero-initialize the storage first and then copy the struct into
 it with memcpy. This also takes care of the alignment issue as a side
 effect.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8057#comment:8>
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