libc/ldso dependency in shared-lib maxima?

Greetings!  I maintain the Debian package of maxima, which has
recently been accepted for installation into the unstable tree.  I've
included Dr. Schelter's patch enabling shared (not static) linking to
the system C and math libraries.  With this patch, we've had a working
package in incoming for some time now.  

Meanwhile, I forgot about maxima for a bit, upgraded my machine to the
slightly newer versions of the Debian system packages, and suddenly
maxima segfaults.  Another Debian user sees the same thing and has
filed a bug.  Rebuilding on my upgraded system restores functionality.
Luckily, I can chase this down if I hurry, as I still have access to a
pre-upgrade machine which can build maxima with debugging symbols.

I would be greatly appreciative, though, if anyone had an insight as
to where to look in advance.

Take care,

-- 
Camm Maguire			     			camm@enhanced.com
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"The earth is but one country, and mankind its citizens."  --  Baha'u'llah