Blair Sadewitz wrote:
> I suppose, then, that my problem with xsltproc could be amd64-specific
> (it dies with 100+ "chunk is already free" errors.

See man malloc(3). If you add 'A' to the /etc/malloc.conf symlink or
to the MALLOC_OPTIONS variable, it'll abort on the first error and
you can then look at the stacktrace to fix or report the bug.

-- 
Christian