[Bug c++/23628] Typeinfo comparison code easily breaks shared libs

[rjohnson at dogstar-interactive dot com]

------- Comment #26 from rjohnson at dogstar-interactive dot com  2006-01-21 21:02 -------

I just got bit by this using 
   gcc version 4.0.3 20051201 (prerelease) (Debian 4.0.2-5) (powerpc)

It's just my $.02 from the gallery, but that address comparison in the
type_info::oprator==() implementation looks suspect.  Stroustrup (3rd edition,
$15.4.4) specifically says:

It is _not_ guaranteed that there is only one type_info object for each type in
the system. 

and then he goes on to call out dynamically linked libraries as a particular
case.

If folks are interested, I can propose a relatively inexpensive (i.e.
non-strcmp) runtime strawman for consideration.


-- 

rjohnson at dogstar-interactive dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rjohnson at dogstar-
                   |                            |interactive dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23628