[Bug c++/50184] Segmentation fault. Copy Constructor.

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50184

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-08-25
     Ever Confirmed|0                           |1
      Known to fail|                            |4.1.2, 4.4.3, 4.5.2, 4.6.1,
                   |                            |4.7.0

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-08-25 10:12:21 UTC ---
(that code is actually invalid and g++ should reject it because CData::CItem is
private in B's constructor, but there's a g++ bug that doesn't do access
checking for template arguments, and fixing that doesn't prevent the segfault)

reduced:

#include <map>
#include <string>
using namespace std;

struct CData
{
    struct CItem
    {
        string m_str1;
    };

    map<string, CItem>  m_map;

    std::string         m_strDFName;
    int                 m_nDFMsgTimeout;
};

    CData func()
    {
        CData data;
        data.m_map["Test"].m_str1 = "Data";
        return data;
    }

class B : public CData
{
public:
    B()
        : CData(func())
    {
        std::string s;
        map<string, CItem>::iterator it = m_map.begin();
        for (; it != m_map.end(); it++) // loops past the end
        {
            s += it->second.m_str1 + it->first;;
        }
    }
};

int main()
{
    B b1;
    return 0;
}