#9539: segfault after memory exhausted using GF(9001)((x))
--------------------------------+-------------------------------------------
Reporter: fchyzak | Owner: AlexGhitza
Type: defect | Status: new
Priority: major | Milestone: sage-4.5.1
Component: basic arithmetic | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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On a MacBook Pro with 2Go (Mac OS X 10.4.11), filling the memory
terminates with a seg fault:
code used:
{{{
from sage.all import LaurentSeriesRing, GF, timeit
R = LaurentSeriesRing(GF(9001), 'x')
f = R([1, 1])
for i in range(27):
timeit('g = f*f', number=1, repeat=1) ; f = f*f
}}}
output is:
{{{
1 loops, best of 1: 16.5 s per loop
1 loops, best of 1: 28.4 s per loop
1 loops, best of 1: 88.6 s per loop
python(6488) malloc: *** vm_allocate(size=2147614720) failed (error
code=3)
python(6488) malloc: *** error: can't allocate region
python(6488) malloc: *** set a breakpoint in szone_error to debug
------------------------------------------------------------
Unhandled SIGBUS: A bus error occured in Sage.
This probably occured 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/9539>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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