[Bug c++/33728] New: Assignement allowed to const pointer

[brianp at occinc dot com]

I have a block of code:
    struct LatLon : public Coord
    {
        std::string lat;
        std::string lon;

        inline LatLon() : lat(""), lon("") {}
    };

    Coord* coord;
    coord = new LatLon();
    static_cast<const LatLon*>(coord)->lat = static_cast<const
LatLon*>(other.coord)->lat;
    static_cast<const LatLon*>(coord)->lon = static_cast<const
LatLon*>(other.coord)->lon;

This should fail to compile as I casted it to a const pointer object.  And it
does fail with the 3.2.2 compiler.  But it successfully compiles with the 4.1.2
compiler.

Compiled sucessfully Red Hat Fedora Core 6:
g++ --version
g++ (GCC) 4.1.2 20070626 (Red Hat 4.1.2-13)

Failed to compile on White Box Linux WS3:
g++ --version
g++ (GCC) 3.2.2
Copyright (C) 2002 Free Software Foundation, Inc.

XmlInMessages.C: In copy constructor
   `xmlin::LocateRequestMessage::LocateRequestMessage(const
   xmlin::LocateRequestMessage&)':
XmlInMessages.C:243: passing `const std::string' as `this' argument of `
   std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT,
   _Traits, _Alloc>::operator=(const std::basic_string<_CharT, _Traits,
   _Alloc>&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc =
   std::allocator<char>]' discards qualifiers
XmlInMessages.C:244: passing `const std::string' as `this' argument of `
   std::basic_string<_CharT, _Traits, _Alloc>& std::basic_string<_CharT,
   _Traits, _Alloc>::operator=(const std::basic_string<_CharT, _Traits,
   _Alloc>&) [with _CharT = char, _Traits = std::char_traits<char>, _Alloc =
   std::allocator<char>]' discards qualifiers
make: *** [../obj/gnu/XmlInMessages.o] Error 1


-- 
           Summary: Assignement allowed to const pointer
           Product: gcc
           Version: 4.1.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: brianp at occinc dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33728