[Boost-bugs] [Boost C++ Libraries] #6742: C4789 warning using boost range on visual 2010

Subject: [Boost-bugs] [Boost C++ Libraries] #6742: C4789 warning using boost range on visual 2010
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-03-29 16:16:51

#6742: C4789 warning using boost range on visual 2010
----------------------------------------+-----------------------------------
 Reporter:  benjamint@…                 |       Owner:  neilgroves
     Type:  Bugs                        |      Status:  new       
Milestone:  To Be Determined            |   Component:  range     
  Version:  Boost 1.47.0                |    Severity:  Problem   
 Keywords:  range visual C4789          |  
----------------------------------------+-----------------------------------
 Hello,

 I am compiling under Windows XP using Visual Studio 2010.

 When I use boost::range, I have some strange compilation warning "warning
 C4789: destination of memory copy is too small".

 Here is a small unit test that reproduces this warning:

 {{{
 #define BOOST_TEST_MODULE boost_range_c4789_test

 #include <boost/phoenix/core.hpp>
 #include <boost/phoenix/operator.hpp>
 #include <boost/range.hpp>
 #include <boost/range/adaptors.hpp>
 #include <boost/range/algorithm.hpp>
 #include <boost/range/algorithm_ext.hpp>
 #include <boost/test/unit_test.hpp>

 #include <vector>

 /**
    \deftestgroup{boost_range_c4789_test}
    \brief Test a spurious C4789 MSVC warning that happens with boost range
    @{
  **/

  struct FooType
  {
     double a,b;
  };

 //-----------------------------------------------------------------------------
 /**
    \testdesc The actual test
 **/
 BOOST_AUTO_TEST_CASE( boost_range_c4789_bug )
 {
    using namespace boost::phoenix::arg_names;
    using namespace boost::adaptors;

    FooType foo;
    foo.a = 2.;
    foo.b = -4.;
    size_t numelem = 10;
    std::vector<FooType> foovec(numelem,foo);
    std::vector<double> barvec;

    boost::push_back( barvec, foovec | transformed( (&arg1)->*& FooType::a
 ) );

    BOOST_CHECK( barvec == std::vector<double>(numelem,foo.a) );
 }

 ///@}

 }}}

 Thanks for your help,

 Benjamin.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6742>
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