[Ns-bugs] [Bug 162] New: Calling Object::AggregateObject twice with the same Object type silently succeeds

[bugzilla-daemon@nsnam-www.ece.gatech.edu]

http://www.nsnam.org/bugzilla/show_bug.cgi?id=162

           Summary: Calling Object::AggregateObject twice with the same
                    Object type silently succeeds
           Product: ns-3
           Version: pre-release
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: P3
         Component: simulation core
        AssignedTo: ns-bugs at isi.edu
        ReportedBy: gjcarneiro at gmail.com


Discovered while accidentally adding internet stack twice to the same object. 
The second time it overwrote the first Ipv4 impl and consequently "covered" it,
so that the netdevices contained apparently disappeared.

There should be a NS_FATAL_WARNING() when aggregating an object whose type is
already represented in the aggregate object.


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