#13960: nef.x segfaults on Cygwin
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Reporter: jpflori | Owner: tbd
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.7
Component: packages | Resolution:
Keywords: palp nef.x cygwin segfault | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Changes (by dimpase):
* status: new => needs_review
Old description:
> On my Windows 7 x64 install of 5.6.rc0 I get segfaults in nef.x.
>
> After rebuilding with CFLAGS="-g -O0" I get the following backtrace
> {{{
> Program received signal SIGSEGV, Segmentation fault.
> __chkstk_ms () at ../../../src/libgcc/config/i386/cygwin.S:173
> 173 ../../../src/libgcc/config/i386/cygwin.S: No such file or
> directory.
> (gdb) bt
> #0 __chkstk_ms () at ../../../src/libgcc/config/i386/cygwin.S:173
> #1 0x004320e5 in part_nef (_P=0x686a0008, _V=0x20064a38, _E=0x20064b40,
> _OUT_PTL=0x6b470008, _codim=0x280c0c, _F=0x22fb7c) at Nefpart.c:774
> #2 0x0042e421 in Make_E_Poly (outFILE=0x61187720, _W=0x280de8,
> _CP=0x7c1e0008, _CV=0x2003a0d0, _CE=0x2003a1d8, _codim=0x280c0c,
> _F=0x28ab70, _D=0x280c10) at E_Poly.c:1327
> #3 0x00402061 in main (narg=2, fn=0x28ac40) at nef.c:291
> }}}
> on the file
> {{{
> $ cat ../nef.bug
> 3 6
> 1 0 0 -1 0 0
> 0 1 0 0 -1 0
> 0 0 1 0 0 -1
> }}}
New description:
On my Windows 7 x64 install of 5.6.rc0 I get segfaults in nef.x.
After rebuilding with CFLAGS="-g -O0" I get the following backtrace
{{{
Program received signal SIGSEGV, Segmentation fault.
__chkstk_ms () at ../../../src/libgcc/config/i386/cygwin.S:173
173 ../../../src/libgcc/config/i386/cygwin.S: No such file or
directory.
(gdb) bt
#0 __chkstk_ms () at ../../../src/libgcc/config/i386/cygwin.S:173
#1 0x004320e5 in part_nef (_P=0x686a0008, _V=0x20064a38, _E=0x20064b40,
_OUT_PTL=0x6b470008, _codim=0x280c0c, _F=0x22fb7c) at Nefpart.c:774
#2 0x0042e421 in Make_E_Poly (outFILE=0x61187720, _W=0x280de8,
_CP=0x7c1e0008, _CV=0x2003a0d0, _CE=0x2003a1d8, _codim=0x280c0c,
_F=0x28ab70, _D=0x280c10) at E_Poly.c:1327
#3 0x00402061 in main (narg=2, fn=0x28ac40) at nef.c:291
}}}
on the file
{{{
$ cat ../nef.bug
3 6
1 0 0 -1 0 0
0 1 0 0 -1 0
0 0 1 0 0 -1
}}}
To fix this, we need to specify the stack size explicitly on Cygwin. This
is done in the updated spkg.
'''install'''
http://boxen.math.washington.edu/home/dima/packages/palp-2.1.p1.spkg
--
Comment:
I've made the spkg where I put this 8MB stack fix for Cygwin in, please
test!
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13960#comment:7>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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