#15363: MPIR large numbers give a segmentation fault
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Reporter: jdemeyer | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-5.13
Component: basic arithmetic | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by jdemeyer:
Old description:
> {{{
> sage: 2^9223372036854775806
> ---------------------------------------------------------------------------
> RuntimeError Traceback (most recent call
> last)
> <ipython-input-9-da1ea00f776d> in <module>()
> ----> 1 Integer(2)**Integer(9223372036854775806)
>
> /scratch/release/merger/sage-5.12/local/lib/python2.7/site-
> packages/sage/rings/integer.so in sage.rings.integer.Integer.__pow__
> (sage/rings/integer.c:14022)()
>
> RuntimeError: Segmentation fault
> }}}
New description:
{{{
sage: 2^9223372036854775806
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
<ipython-input-9-da1ea00f776d> in <module>()
----> 1 Integer(2)**Integer(9223372036854775806)
/scratch/release/merger/sage-5.12/local/lib/python2.7/site-
packages/sage/rings/integer.so in sage.rings.integer.Integer.__pow__
(sage/rings/integer.c:14022)()
RuntimeError: Segmentation fault
}}}
This is essentially due to MPIR not checking for errors in `malloc()` (nor
does it have a mechanism for returning errors to the user).
This could be "solved" within Sage by adding checking in
`sage_mpir_malloc()` and friends.
--
--
Ticket URL: <http://trac.sagemath.org/ticket/15363#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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