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[Bug libstdc++/19567] New: dynamic_cast failure in dlopen-ed shared object


Please note this is not a duplicate of #4993, because I am using RTLD_GLOBAL and
-Wl,-E.

This test project demonstatrates a problem when using dynamic_cast from inside a
shared object to attempt to convert a base class (interface) to a derived class
(another interface) whose definitions are in header files shared between the
application and the shared object.

When casting from a base class to the derived class from inside the main
executable, dynamic_cast works as expected and returns a non null pointer. 
However, from inside of the dlopen-ed shared library, the dynamic_cast function
incorrectly returns zero.

Attachment will follow.

-- 
           Summary: dynamic_cast failure in dlopen-ed shared object
           Product: gcc
           Version: 3.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: daveregs at rsaisp dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19567


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