[Boost-bugs] [Boost C++ Libraries] #9718: boost::container::string assignment operator problem

Subject: [Boost-bugs] [Boost C++ Libraries] #9718: boost::container::string assignment operator problem
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-02-26 16:01:10

#9718: boost::container::string assignment operator problem
---------------------------------------------+-----------------------------
 Reporter:  Piotr Sulecki <piotr.sulecki@…>  |       Type:  Bugs
   Status:  new                              |  Milestone:  To Be
Component:  None                             |  Determined
 Severity:  Problem                          |    Version:  Boost 1.53.0
                                             |   Keywords:
---------------------------------------------+-----------------------------
 The following code compiles with std::string, but fails to with
 boost::container::string. The error message is:
 {{{
 stringtest.cpp: In function ‘int main()’:
 stringtest.cpp:21:5: error: no match for ‘operator=’ (operand types are
 ‘Msg’ and ‘const Msg’)
    y = x; // ok with std::string, compilation error with
 boost::container::string
      ^
 stringtest.cpp:21:5: note: candidate is:
 stringtest.cpp:7:8: note: Msg& Msg::operator=(Msg&)
  struct Msg
         ^
 stringtest.cpp:7:8: note:   no known conversion for argument 1 from ‘const
 Msg’ to ‘Msg&’

 }}}

 ...which suggests the assignment operator generated for Msg takes only a
 Msg reference, not a const one.

 Boost 1.53.0 under Cygwin64, compiled using g++ (GCC) 4.8.1.


 {{{
 #include <string>
 #include <boost/container/string.hpp>

 // using namespace std;
 using namespace boost::container;

 struct Msg
 {
 public:
   string msg;
 };

 int main()
 {
   const string a("hello");
   string b;
   b = a; // ok

   const Msg x;
   Msg y;
   y = x; // ok with std::string, compilation error with
 boost::container::string
   return 0;
 };
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9718>
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