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Interestingly, the problem does not occur within a script
here, too. Maybe it is in the readline library or something
like that. Pressing <shift>-<Enter> always segfaults for me
(known readline bug). This is the same as <Escape>-O-<Enter>
and the same problem is in Ruby and sh, so this is a
readline bug.  I think this because [int(1e100) for i in
xrange(1000000)] works fine, also on the interactive prompt.
Hmm, would there be a way to test this hypotesis?