The same happens for me on Sage 7.4 on Fedora, so definitely a bug.
On Sun, Jan 15, 2017 at 3:27 PM, Peleg Michaeli <freepe...@gmail.com> wrote:
> The following attempt:
>
> sage: var('c,n')
> sage: (1/(c*n^6))^log(n,2/3).limit(n=infinity)
>
> Is ok (raises ValueError), but the following attempt:
>
> sage: var('c,n')
> sage: f = (1/(c*n^6))^log(n,2/3)
> sage: f.limit(n=infinity)
>
> hangs a little while, the prints a lot of times
>
> ;;;
> ;;; Detected access to protected memory, also kwown as 'bus or segmentation
> fault'.
> ;;; Jumping to the outermost toplevel prompt
> ;;;
>
> and ends with a segmentation fault (core dumped).
>
> This is on SageMath version 7.5.beta5, Release Date: 2016-12-01, built on my
> Ubuntu.
>
> Should I open a ticket?
>
>
> Thanks,
> Peleg.
>
> ----
>
> System info:
>
> * Ubuntu 14.04.5 LTS (trusty)
> * Architecture: 64 bit
> * Kernel version: 4.4.0-57-generic
> * Dell E7440
> * Bios version: A14
>
> ----
>
> Build info:
>
> * gcc (Ubuntu 4.9.4-2ubuntu1~14.04.1) 4.9.4
> * GNU Make 3.81
> * m4 (GNU M4) 1.4.17
> * perl v5.18.2
> * GNU ar (GNU Binutils for Ubuntu) 2.24
> * GNU ranlib (GNU Binutils for Ubuntu) 2.24
> * tar (GNU tar) 1.27.1
> * Python 2.7.6
>
> ----
>
> Additional software:
>
> * dvipng (dvipng (TeX Live)) 1.15
> * pdfTeX 3.14159265-2.6-1.40.16 (TeX Live 2015)
>
>
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