#1 Segfault on 64 bit machines?

[Alexander Koller]

The program crashes with a segfault on 64-bit machines.
(I have tried this on elf.) This happens when the graph
is populated, in the newNode function. I conjecture
that the error is caused by Sebastian's internal graph
node management. We should either hunt this error down
and fix it, or migrate to a different graph library.

[Alexander Koller]

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Note: The error only occurs if compiler optimisations (-O1,
-O2, etc.) are switched on. As a quick workaround, it is
possible to compile without optimisations (which makes the
program slower by a factor of 3).

[Alexander Koller]

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This isn't a general 64-bit bug; utool compiles ok on httpd
and Marco Kuhlmann's private 64-bit Mac. So there's probably
a problem with the C++ installation on elf.