Re: [Boost-bugs] [Boost C++ Libraries] #8157: Access violation of const objects

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8157: Access violation of const objects
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-02-26 00:32:44

#8157: Access violation of const objects
---------------------------------------------------+------------------------
  Reporter:  Michał Kędrzyński <kedrzu@…>          |       Owner:  ramey        
      Type:  Bugs                                  |      Status:  new          
 Milestone:  To Be Determined                      |   Component:  serialization
   Version:  Boost 1.52.0                          |    Severity:  Problem      
Resolution:                                        |    Keywords:  const        
---------------------------------------------------+------------------------

Comment (by Michał Kędrzyński <kedrzu@…>):

 This is indeed possible, however very nasty. Consider this piece of code:
 {{{
 class foo {
 public:
     void bar(int i) const {
         std::cout << i << std::endl;
     }
 };

 int main() {
     // create an instance
     foo f;

     // create a pointer to the function
     void (foo::*func)(int) = reinterpret_cast<void
 (foo::*)(int)>(&foo::bar);

     // call it with non const object
     (f.*func)(1);
     (f.*func)(2);
     (f.*func)(3);
     (f.*func)(4);

     return 0;
 }
 }}}

 Const function have been cast to non constant, which is probably not very
 elegant, but if proper static assertions would be provide, I think it
 won't be so bad.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8157#comment:4>
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