#6391: libGAP! -- create a Cython library interface to gap
----------------------------------------------------------------------------+
Reporter: was |
Owner: was
Type: enhancement |
Status: needs_review
Priority: major |
Milestone: sage-5.3
Component: group theory |
Resolution:
Keywords: |
Work issues:
Report Upstream: N/A |
Reviewers: Dima Pasechnik, Ivan Andrus, Volker Braun, William Stein
Authors: Dima Pasechnik, Ivan Andrus, Volker Braun, William Stein |
Merged in:
Dependencies: #13211 |
Stopgaps:
----------------------------------------------------------------------------+
Comment (by dimpase):
Replying to [comment:111 vbraun]:
> The implicit declaration and pointer cast warnings are normal, GAP just
predates ansi C :-)
Well, anyhow... Could you confirm that my change of the code was OK, and
this is a genuine issue?
gdb tells me the following:
{{{
g:=FreeGroup(2);
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff75a8d0f in libGAP_RNamName ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
(gdb) bt
#0 0x00007ffff75a8d0f in libGAP_RNamName ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#1 0x00007ffff76cb0e1 in libGAP_CallErrorInner ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#2 0x00007ffff76cb2f4 in libGAP_ErrorQuit ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#3 0x00007ffff757b8df in libGAP_ErrorMustHaveAssObjHandler ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#4 0x00007ffff75b7b70 in libGAP_DoWrap2args ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#5 0x00007ffff76cb299 in libGAP_CallErrorInner ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#6 0x00007ffff76cb2f4 in libGAP_ErrorQuit ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#7 0x00007ffff757b8df in libGAP_ErrorMustHaveAssObjHandler ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#8 0x00007ffff75b7b70 in libGAP_DoWrap2args ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#9 0x00007ffff76cb299 in libGAP_CallErrorInner ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#10 0x00007ffff76cb2f4 in libGAP_ErrorQuit ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#11 0x00007ffff757b8df in libGAP_ErrorMustHaveAssObjHandler ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#12 0x00007ffff75b7b70 in libGAP_DoWrap2args ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#13 0x00007ffff76cb299 in libGAP_CallErrorInner ()
from /usr/local/src/sage/sage-5.4.beta1/local/lib/libgap.so.0
#14 0x00007ffff76cb2f4 in libGAP_ErrorQuit ()
.....
}}}
and it keeps repeating, ad nauseum...
The x86_64 system runs Debian, here are the compiler specs:
{{{
(sage-sh) dima@spms-banana:test$ gcc -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.4.5-8'
--with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs --enable-
languages=c,c++,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.4
--enable-shared --enable-multiarch --enable-linker-build-id --with-system-
zlib --libexecdir=/usr/lib --without-included-gettext --enable-
threads=posix --with-gxx-include-dir=/usr/include/c++/4.4
--libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-
debug --enable-objc-gc --with-arch-32=i586 --with-tune=generic --enable-
checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.5 (Debian 4.4.5-8)
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6391#comment:112>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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