Re: [sage-support] Sagemath 9.5 kernel crash from GF(2) empty vector dot product

['Justin C. Walker' via sage-support]

> On May 5, 2022, at 21:04 , Tracy Hall <h.tr...@gmail.com> wrote:
> 
> The following two lines crash the kernel in 9.5 but not 9.4:
> 
> xx = vector(GF(2), [])
> xx * xx
> 
> It works correctly (with answer 0) over other finite fields or over QQ.
> 
> Installation is Sagemath 9.5 in Ubuntu running under WSL for Windows; tested 
> also in CoCalc Sagemath 9.5 (where it crashes) and CoCalc Sagemath 9.4 (where 
> it correctly produces 0).

I can confirm that if I run these two lines, the following happens:

9.4 (built locally, from scratch): the printed result is 0

9/.5 (the version supplied by Marc Culler): SIGSEGV [a segmentation fault in 
sage] no traceback supplied

I am running on an iMac Pro (18 core Xeon), with macOS 10.13.6.

I assume by “the kernel” you mean Sage, not the linux kernel.

HTH 

Justin

--
Justin C. Walker, Curmudgeon-At-Large
Director
Institute for the Enhancement of the Director's Income
--------
"Weaseling out of things is what separates us from the animals.
 Well, except the weasel."
      - Homer J Simpson
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