On Friday, October 20, 2017 at 8:19:55 AM UTC+1, Bruno Grenet wrote: > > As reported on Ask > < > https://ask.sagemath.org/question/39204/segmentation-fault-when-multiplying-by-variable/>, > > > the following computation causes a segmentation fault: > > sage: P.<x> = GF(3)['x'] > sage: var('a') > sage: sigma = 2*x+ 1 > sage: a * sigma > > According to my tests, the problem occurs when one multiplies a symbolic > expression by a non monic polynomial over a finite field, having at > least two terms. Note that converting the polynomial to SR beforehand > does not change anything. >
The latter is the cause - certainly it should not be possible to perform such a conversion; as it seemingly succeeds, the coersion system things it can do the multiplication... > > I did not succeed in finding the origin of this bug, so help is welcome. > I've opened ticket #24072 <https://trac.sagemath.org/ticket/24072> for > this. > > Best, > Bruno > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
