On Jun 7, 2012, at 16:19 , William Stein wrote:

> Hi Sage-Devel,
> 
> I'm randomly running into segfaults when multiplying matrices over the
> integers, in the course of doing basic modular symbols calculations.
> For example, sometimes (but not always), this crashes:
> 
> sage: M = ModularSymbols(389,sign=0).cuspidal_submodule().decomposition()[0]

I used the "for loop" from earlier in the thread on Mac OS X (both 10.6.8 and 
10.7.4).  In both cases, all worked w/o crashing.

Does this happen rarely, sometimes, frequently?

Justin

--
Justin C. Walker, Curmudgeon-At-Large, Director
Institute for the Enhancement of the Director's Income
--------
The path of least resistance:
it's not just for electricity any more.
--------



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