crash in polynomial remainder

[sagetrac-dmharvey]

sage: R.<x> = PolynomialRing(Integers(4))
sage: f = x^2 + 3
sage: f % 2
InvMod: inverse undefined
/Users/david/sage/local/bin/sage-sage: line 222: 11351 Abort trap              sage-ipython "$@" -c "$SAGE_STARTUP_COMMAND;"

This is an NTL error message, which is not being trapped or something.

Component: basic arithmetic

Issue created by migration from https://trac.sagemath.org/ticket/2497

[dfdeshom]

comment:1

This also happens in __florrdiv__(), quo_rem()

[sagetrac-dmharvey]

Attachment: 2497.patch.gz

[sagetrac-mabshoff]

comment:4

#2592 seems related and is not fixed by this patch.

Cheers,

Michael

[sagetrac-mabshoff]

comment:5

The patch fixes the issue, adds a doctest for the crash and passes doctests. Positive review.

Cheers,

Michaek

[sagetrac-mabshoff]

comment:6

Merged in Sage 3.0.alpha2