[Gridflow-dev] excessive stack usage?

[Claude Heiland-Allen]

Hi,

I had a problem with a large (but not excessively large, and not 
recursive) gridflow patch segfaulting seemingly at random.

Turned out (after much puzzling over gdb/valgrind traces) that it was 
overflowing the stack, which was 8kB (Debian Lenny bash default, at 
least I didn't change anything..):

$ ulimit -s
8192

Increasing it to ~100kB solved the problem:

$ ulimit -s 100000

..but I'm wondering if gridflow should put less data on the stack?

Either that or maybe add a hint to the documentation that "if it 
crashes, check that your stack size is big enough".


Claude