#10833: Unhandled SIGSEGV on large expand of iterated polynomial
--------------------------+-------------------------------------------------
Reporter: katestange | Owner: AlexGhitza
Type: defect | Status: needs_info
Priority: minor | Milestone: sage-4.6.2
Component: algebra | Keywords: expand, polynomial, polynomial ring
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
--------------------------+-------------------------------------------------
Comment(by dsm):
On OS X 10.6.6, 4.6.2.rc0 under -gdb:
{{{
sage: g = expand(iterkate(6))
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: 13 at address: 0x0000000000000000
0x000000010789eb2e in GiNaC::mul::compare ()
(gdb) backtrace
#0 0x000000010789eb2e in GiNaC::mul::compare ()
#1 0x00000001078079df in
std::__unguarded_linear_insert<__gnu_cxx::__normal_iterator<GiNaC::expair*,
std::vector<GiNaC::expair, std::allocator<GiNaC::expair> > >,
GiNaC::expair, GiNaC::expair_rest_is_less> ()
#2 0x000000010780a3b5 in
std::__final_insertion_sort<__gnu_cxx::__normal_iterator<GiNaC::expair*,
std::vector<GiNaC::expair, std::allocator<GiNaC::expair> > >,
GiNaC::expair_rest_is_less> ()
#3 0x0000000107804d1b in GiNaC::expairseq::canonicalize ()
#4 0x0000000107804d4c in GiNaC::expairseq::construct_from_epvector ()
#5 0x00000001077bf580 in GiNaC::add::add ()
#6 0x00000001077bf6d0 in GiNaC::add::expand ()
#7 0x00000001077fd165 in GiNaC::ex::expand ()
#8 0x0000000107deeb7f in
__pyx_pf_4sage_8symbolic_10expression_10Expression_expand
(__pyx_v_self=0x10c9cf170, __pyx_args=0x10023c050, __pyx_kwds=<value
temporarily unavailable, due to optimizations>) at
sage/symbolic/expression.cpp:13836
#9 0x00000001000b6472 in PyEval_EvalFrameEx ()
#10 0x00000001000b9002 in PyEval_EvalCodeEx ()
#11 0x00000001000b61b5 in PyEval_EvalFrameEx ()
#12 0x00000001000b9002 in PyEval_EvalCodeEx ()
#13 0x00000001000b875e in PyEval_EvalFrameEx ()
#14 0x00000001000b9002 in PyEval_EvalCodeEx ()
[etc]
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10833#comment:4>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en.
