int(finite field element) should only work when it is in the prime subfield

[rlmill]

This was the real cause of #8406, and the fix there introduced the following bug:

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| Sage Version 4.5, Release Date: 2010-07-16                         |
| Type notebook() for the GUI, and license() for information.        |
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sage: n = 20
sage: k = 3
sage: g = DiGraph()
sage: g.add_edges( (i,Mod(i+j,n)) for i in range(n) for j in range(1,k+1) )
sage: g.vertices()
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]
sage: g.strongly_connected_components()
[[0], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]]

CC: @malb

Component: number theory

Author: Robert Miller

Reviewer: Martin Albrecht

Merged: sage-4.5.3.alpha0

Issue created by migration from https://trac.sagemath.org/ticket/9610

[rlmill]

Attachment: trac_9610.patch.gz

[malb]

Reviewer: Martin Albrecht

[malb]

comment:1

Looks good.

[qed777]

Merged: sage-4.5.3.alpha0