[Boost-bugs] [Boost C++ Libraries] #6132: lexical_cast with Source = void* broken in 1.48.0

Subject: [Boost-bugs] [Boost C++ Libraries] #6132: lexical_cast with Source = void* broken in 1.48.0
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-11-17 14:44:34

#6132: lexical_cast with Source = void* broken in 1.48.0
---------------------------------------+------------------------------------
 Reporter:  jk_boost_bug@…             |       Owner:  nasonov     
     Type:  Bugs                       |      Status:  new         
Milestone:  To Be Determined           |   Component:  lexical_cast
  Version:  Boost 1.48.0               |    Severity:  Regression  
 Keywords:                             |  
---------------------------------------+------------------------------------
 Since 1.48.0, lexical_cast<string> does not compile anymore, where the
 Source type is void*. This worked fine in 1.47.0 and before.

 Example:

 {{{
 #include <string>
 #include <iostream>
 #include <boost/lexical_cast.hpp>

 int main(int argc, const char **argv) {
   int x = 0;
   void *ptr = &x;

   std::string s = boost::lexical_cast<std::string>(ptr);

   std::cout << s << std::endl;

   return 0;
 }

 }}}

 Compiler output:

 {{{
 ..../boost/lexical_cast.hpp: In static member function ‘static Target
 boost::detail::lexical_cast_do_cast<Target,
 Source>::lexical_cast_impl(const Source&) [with Target = std::string,
 Source = void*]’:
 ..../boost/lexical_cast.hpp:1916:   instantiated from ‘Target
 boost::lexical_cast(const Source&) [with Target = std::string, Source =
 void*]’
 test.cpp:9:   instantiated from here
 .../boost/lexical_cast.hpp:1742: error: invalid application of ‘sizeof’ to
 a void type

 }}}

 The problem seems to be that
 sizeof(void) is called
 in the calculation of
 'const bool requires_stringbuf'
 (lexical_cast.hpp:1728).

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6132>
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