copying a linear program crashes Sage #11588
Description
It would be useful to copy a linear program, so that one doesn't have to recopy the constraints. Unfortunately, this crashes Sage, and pretty hard.
sage: eqs = MixedIntegerLinearProgram()
sage: eqs2 = copy(eqs)
sage: eqs2
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Unhandled SIGSEGV: A segmentation fault occurred in Sage.
This probably occurred because a *compiled* component
of Sage has a bug in it (typically accessing invalid memory)
and is not properly wrapped with sig_on(), sig_off().
You might want to run Sage under gdb with 'sage -gdb' to debug this.
Sage will now terminate (sorry).
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Apply attachment: trac_11588.patch to the Sage library.
Component: linear programming
Keywords: copy
Author: Nathann Cohen
Reviewer: John Perry
Merged: sage-4.7.2.alpha3
Issue created by migration from https://trac.sagemath.org/ticket/11588