>>> (gdb) bt
>>> #0  0x5d168 in _catclose ()
>>> #1  0x5cc00 in _catopen ()
>>> #2  0x5c640 in __strerror ()
>>> #3  0x58d50 in strerror ()

> I don't think we can trust this stacktrace.  _catopen() doesn't call
> _catclose().

Does it perhaps call a static routine that got loaded above _catclose
and below the next global symbol?  I've seen misleading names in stack
traces for that reason often enough....

					der Mouse

			    mouse@collatz.mcrcim.mcgill.edu