It looks like this problem is going to be fixed by the upgrade to Singular 4.1.3 (#25993).
sage: R.<x,y> = Integers(7)[] sage: p = x**2-1 sage: p.factor() (x + 1) * (x + 6) There is another segmentation fault related to the non-commutative subsystem Plural, though, causing a doctest failure on the upgrade branch. See https://trac.sagemath.org/ticket/25993#comment:22 for details. Any help with this is appreciated. -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/79f7bfbe-ac80-4ea3-9204-6a33abc31964%40googlegroups.com.