#10018: Unhandled SIGSEGV after bnfcertify()
------------------------+---------------------------------------------------
Reporter: jdemeyer | Owner: tba
Type: defect | Status: new
Priority: critical | Milestone: sage-4.6
Component: c_lib | Keywords: segfault segmentation fault bnfcertify
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Do the following in Sage:
{{{
sage: K.<z> = CyclotomicField(23); bnf=K.pari_bnf(certify=False)
sage: bnf.bnfcertify()
}}}
After typing the second line {{{bnf.bnfcertify()}}}, hit CTRL-c after 10
seconds or so. It will take a long time before the interrupt registers,
but eventually a KeyboardInterrupt will show up. However, something is
wrong after this KeyboardInterrupt, because typing
{{{
K.<z> = CyclotomicField(23)
}}}
immediately gives the dreaded
{{{
------------------------------------------------------------
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)
or 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).
------------------------------------------------------------
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10018>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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