[Boost-bugs] [Boost C++ Libraries] #10886: boost::hash_detail::hash_binary() Triggers GCC Strict Aliasing Warning

Subject: [Boost-bugs] [Boost C++ Libraries] #10886: boost::hash_detail::hash_binary() Triggers GCC Strict Aliasing Warning
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-12-19 12:10:56

#10886: boost::hash_detail::hash_binary() Triggers GCC Strict Aliasing Warning
-------------------------------------------------+-------------------------
 Reporter:  Rob Stewart <rstewart@…>             |      Owner:  danieljames
     Type:  Bugs                                 |     Status:  new
Milestone:  To Be Determined                     |  Component:  hash
  Version:  Boost 1.57.0                         |   Severity:  Problem
 Keywords:  hash type-punning string-aliasing    |
  warning                                        |
-------------------------------------------------+-------------------------
 http://lists.boost.org/Archives/boost/2008/04/136209.php discusses the
 issue and provides a fix, but the problem persists in develop.  This fix
 is long overdue.

 The problem is that `boost::hash_detail::hash_binary()` casts its `char *`
 parameter to `std::size_t *` when called by
 `boost::hash_detail::float_hash_impl()`, which casts its `float` parameter
 to `char *` to pass as `boost::hash_detail::hash_binary()`'s `char *`
 argument, when called by `boost::hash_detail::float_hash_value()`.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10886>
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