#8173: segfault in singular resultant
-----------------------------------+----------------------------------------
Reporter: burcin | Owner: malb
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.2
Component: commutative algebra | Keywords: singular
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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On 4.3.2.alpha2:
{{{
sage: R.<x,y,a,b,u>=PolynomialRing(ZZ, 5)
sage: r = (x^4*y^2+x^2*y-y).resultant(x*y-y*a-x*b+a*b+u,x)
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xb7d8b8c0 (LWP 28007)]
0xb72844c5 in __gmpn_copyi ()
from /scratch/berocal/sage/i686/sage-4.3.rc0/local/lib/libgmp.so.3
Current language: auto; currently asm
(gdb) bt
#0 0xb72844c5 in __gmpn_copyi ()
from /scratch/berocal/sage/i686/sage-4.3.rc0/local/lib/libgmp.so.3
#1 0xb72647f2 in __gmpz_init_set ()
from /scratch/berocal/sage/i686/sage-4.3.rc0/local/lib/libgmp.so.3
#2 0x00000005 in ?? ()
#3 0xbfe225b8 in ?? ()
#4 0xbfe225f8 in ?? ()
#5 0xb3d7fcb5 in conv_SingPFactoryP (p=0xb3efa4a0, r=0xb3db7980)
at clapconv.cc:143
Backtrace stopped: previous frame inner to this frame (corrupt stack?)
}}}
Sage calls `singclap_resultant()`.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8173>
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