[Boost-bugs] [Boost C++ Libraries] #8694: gcc -Wcast-qual warning in boost/function/function_template.hpp

Subject: [Boost-bugs] [Boost C++ Libraries] #8694: gcc -Wcast-qual warning in boost/function/function_template.hpp
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-06-13 17:18:05

#8694: gcc -Wcast-qual warning in boost/function/function_template.hpp
--------------------------------------+----------------------
 Reporter:  Ruben Adamyan <ruboam@…>  |      Owner:  dgregor
     Type:  Bugs                      |     Status:  new
Milestone:  To Be Determined          |  Component:  function
  Version:  Boost 1.53.0              |   Severity:  Cosmetic
 Keywords:                            |
--------------------------------------+----------------------
 When using boost function library with -Wcast-qual and -Werror flags
 enabled the following error comes up
 boost/function/function_template.hpp:628:35 error:
 cast from type 'const ...*' to type 'void*' casts away qualifiers [-Werror
 =cast-qual]
 functor.obj_ref.obj_ptr = (void *)(f.get_pointer()); .....

 This warning happens when f.get_pointer() is a const pointer (e.g. it is
 originating from boost::cref). Which leads to this C-style cast that casts
 away of constness. I think this can be fixed by replacing C-style cast by
 const_cast<void*>(static_cast<const void*>(f.get_pointer())) or by adding
 GCC pragmas to disable -Wcast-qual warning in this header file.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8694>
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