Hi,

Took time to trace/debug with the help of Pascal Stenuit: The bug and
pattern seems to be a leak in GC due to a missing GCUNPRO...
This result in a unclean gcprolist in AIX (I do think the bug is "all
arch", just badly visible in AIX and some specific GNU/Linux arch -
other archs will just leak)...

Here come the patch - applied to a clean today checkout and passed the
bootstrap of "characters" just fine

Regs,
Pierre
--
>>> horsemen = ['war', 'pestilence', 'famine']
>>> horsemen.append('Powerbuilder')