I've got the segfault on amd64 (Intel Core2).

I ran with sage -gdb, once the segfault hits, a bt gives:

(gdb) bt
#0  0x00007f4808262050 in strlen () from /lib/libc.so.6
#1  0x0000000000455e4b in PyString_FromString ()
#2  0x00007f47effbda43 in initmulti_polynomial_libsingular ()

from 
/usr/lib/python2.5/site-packages/sage/rings/polynomial/multi_polynomial_libsingular.so
#3  0x00000000004ab1d7 in _PyImport_LoadDynamicModule ()
#4  0x00000000004a9734 in ?? ()
#5  0x00000000004a99cc in ?? ()
#6  0x00000000004aa071 in ?? ()
#7  0x00000000004aa3df in PyImport_ImportModuleLevel ()
#8  0x000000000048ad79 in ?? ()
#9  0x00000000004187b3 in PyObject_Call ()
#10 0x000000000048b262 in PyEval_CallObjectWithKeywords ()
#11 0x000000000048e822 in PyEval_EvalFrameEx ()
#12 0x0000000000492a52 in PyEval_EvalFrameEx ()
#13 0x000000000049313d in PyEval_EvalCodeEx ()
#14 0x00000000004dd612 in ?? ()
#15 0x00000000004187b3 in PyObject_Call ()
#16 0x00007f47fe4101c8 in ?? ()
   from /usr/lib/python2.5/site-packages/sage/rings/ring.so
#17 0x00000000004187b3 in PyObject_Call ()
#18 0x0000000000462194 in ?? ()
#19 0x000000000048f03c in PyEval_EvalFrameEx ()


Incidentally, sage -notebook does not give a segfault. It doesn't really
help though.  I presume you need to type shift-enter to get a result in
the notebook? It's not documented!  But that's how you do it in
Mathematica.  Anyway, even after pressing shift-enter, it doesn't give
any output result. Probably silently affected by the segfault.

Drew





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