Re: [Boost-bugs] [Boost C++ Libraries] #8337: The internal representation of "std::string(this->code()->message())" escapes, but is destroyed when it exits scope.

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #8337: The internal representation of "std::string(this->code()->message())" escapes, but is destroyed when it exits scope.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-03-28 23:57:16

#8337: The internal representation of "std::string(this->code()->message())"
escapes, but is destroyed when it exits scope.
----------------------------------------------+-----------------------------
  Reporter:  Richard <legalize@…>             |       Owner:  viboes  
      Type:  Bugs                             |      Status:  assigned
 Milestone:  To Be Determined                 |   Component:  thread  
   Version:  Boost 1.52.0                     |    Severity:  Problem 
Resolution:                                   |    Keywords:          
----------------------------------------------+-----------------------------
Changes (by viboes):

  * owner:  anthonyw => viboes
  * status:  new => assigned


Old description:

> Coverity static analysis reported the following problem:
>
> class BOOST_SYMBOL_VISIBLE future_error
>      : public std::logic_error
>  {
>      system::error_code ec_;
>  public:
>      future_error(system::error_code ec)
>      : logic_error(ec.message()),
>        ec_(ec)
>      {
>      }
>
>      const system::error_code& code() const BOOST_NOEXCEPT
>      {
>        return ec_;
>      }
>      const char* what() const BOOST_THREAD_NOEXCEPT_OR_THROW
>      {
>  CID 10932 (#2 of 2): Wrapper object use after free (WRAPPER_ESCAPE)1.
> escape: The internal representation of
> "std::string(this->code()->message())" escapes, but is destroyed when it
> exits scope.
>       return code().message().c_str();
>      }
>  };

New description:

 Coverity static analysis reported the following problem:


 {{{
 class BOOST_SYMBOL_VISIBLE future_error
      : public std::logic_error
  {
      system::error_code ec_;
  public:
      future_error(system::error_code ec)
      : logic_error(ec.message()),
        ec_(ec)
      {
      }

      const system::error_code& code() const BOOST_NOEXCEPT
      {
        return ec_;
      }
      const char* what() const BOOST_THREAD_NOEXCEPT_OR_THROW
      {
  CID 10932 (#2 of 2): Wrapper object use after free (WRAPPER_ESCAPE)1.
 escape: The internal representation of
 "std::string(this->code()->message())" escapes, but is destroyed when it
 exits scope.
       return code().message().c_str();
      }
  };
 }}}

--
Comment:
 Could you clarify what is the bug?
-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/8337#comment:1>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.