[Bug c++/22265] New: Non -native type entry is getting added to an STL Map incorrectly

[kpbhat at sta dot samsung dot com]

The bug that I am reporting was confirmed on g++ versions 3.3.1, 3.2.3 and 
2.95.3 on a Linux platform.

Although my simple sample program is quite self-explanatory, here’s the problem 
in a nutshell:

I am maintaining an STL map between IP addresses.  In the sample code, I am 
maintaining a map between 105.52.20.33, 5000 and 47.32.68.95, 6000.

When I display the entries in the map, the second IP address is overwritten by 
the first one.  So instead of the mapping: 

105.52.20.33, 5000 >>-->> 47.32.68.95, 6000 
I get

105.52.20.33, 5000 >>-->> 105.52.20.33, 6000 

The bug does not manifest when the code is compiled using native Solaris 
compiler version "WorkShop Compilers 5.0 02/04/10 C++ 5.0 Patch 107311-17" 

If you need any further clarification, kindly let me know.

Regards,
Kong Posh

/////////////// Source Code Begin ///////////////////////
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#include <string>
#include <map>
#include <iostream>

using namespace std;


struct addrLessThan:public binary_function<const struct sockaddr_in, const 
struct sockaddr_in, bool> 
{ 
  bool operator()(const struct sockaddr_in addr1, const struct sockaddr_in 
addr2) const 
  { 
    bool retVal = true;

    string addrStr1 = inet_ntoa(addr1.sin_addr);
    string addrStr2 = inet_ntoa(addr2.sin_addr);

    if(addrStr1 > addrStr2)
      retVal = false;
    else if(addrStr1 == addrStr2)
      retVal = (addr1.sin_port < addr2.sin_port);

    return retVal;
  } 
}; 



typedef map<struct sockaddr_in, struct sockaddr_in, addrLessThan> IpV4AddrMap;



main()
{
  struct sockaddr_in actualAddress, mappedAddress;

  actualAddress.sin_port=5000;
  actualAddress.sin_addr.s_addr = inet_addr("105.52.20.33");

  mappedAddress.sin_port=6000;
  mappedAddress.sin_addr.s_addr = inet_addr("47.32.68.95");

  IpV4AddrMap map;

  map[actualAddress] = mappedAddress;

  IpV4AddrMap::iterator itor = map.find(actualAddress);

  if(itor != map.end())
  {
    cout << "Key: " << inet_ntoa(itor->first.sin_addr)
         << ", " << itor->first.sin_port << endl
         << "Value: " << inet_ntoa(itor->second.sin_addr)
         << ", " << itor->second.sin_port << endl
         << endl;
  }
  return 0;
}

-- 
           Summary: Non -native type entry is getting added to an STL Map
                    incorrectly
           Product: gcc
           Version: 3.3.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: kpbhat at sta dot samsung dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22265