Segfault in factorize

[Volker Braun <vbraun.name@…>]

                     SINGULAR                                 /  Development
 A Computer Algebra System for Polynomial Computations       /   version 3-1-6
                                                           0<
 by: W. Decker, G.-M. Greuel, G. Pfister, H. Schoenemann     \   Dec 2012
FB Mathematik der Universitaet, D-67653 Kaiserslautern        \
> ring r = 0,(u,v,w),dp;
> poly f = 16*u^4*v^6*w^2+144*u^4*v^5*w^3+80*u^3*v^6*w^3+416*u^4*v^4*w^4+560*u^3*v^5*w^4+96*u^2*v^6*w^4+560*u^4*v^3*w^5+1296*u^3*v^4*w^5+368*u^2*v^5*w^5+16*u*v^6*w^5+384*u^4*v^2*w^6+1328*u^3*v^3*w^6+528*u^2*v^4*w^6+48*u*v^5*w^6+128*u^4*v*w^7+608*u^3*v^2*w^7+336*u^2*v^3*w^7+48*u*v^4*w^7+16*u^4*w^8+96*u^3*v*w^8+80*u^2*v^2*w^8+16*u*v^3*w^8-112*u^4*v^5*w^2-64*u^3*v^6*w^2-752*u^4*v^4*w^3-960*u^3*v^5*w^3-176*u^2*v^6*w^3-1648*u^4*v^3*w^4-3744*u^3*v^4*w^4-1344*u^2*v^5*w^4-64*u*v^6*w^4-1600*u^4*v^2*w^5-5744*u^3*v^3*w^5-3104*u^2*v^4*w^5-304*u*v^5*w^5-704*u^4*v*w^6-3840*u^3*v^2*w^6-3056*u^2*v^3*w^6-480*u*v^4*w^6-112*u^4*w^7-1008*u^3*v*w^7-1296*u^2*v^2*w^7-304*u*v^3*w^7-64*u^3*w^8-176*u^2*v*w^8-64*u*v^2*w^8+312*u^4*v^4*w^2+400*u^3*v^5*w^2+76*u^2*v^6*w^2+1540*u^4*v^3*w^3+3436*u^3*v^4*w^3+1360*u^2*v^5*w^3+72*u*v^6*w^3+2412*u^4*v^2*w^4+8788*u^3*v^3*w^4+5572*u^2*v^4*w^4+616*u*v^5*w^4+1500*u^4*v*w^5+8836*u^3*v^2*w^5+8524*u^2*v^3*w^5+1540*u*v^4*w^5+316*u^4*w^6+3484*u^3*v*w^6+5512*u^2*v^2*w^6+1548*u*v^3*w^6+400*u^3*w^7+1348*u^2*v*w^7+628*u*v^2*w^7+72*u^2*w^8+76*u*v*w^8-448*u^4*v^3*w^2-1004*u^3*v^4*w^2-420*u^2*v^5*w^2-24*u*v^6*w^2-1548*u^4*v^2*w^3-5672*u^3*v^3*w^3-3920*u^2*v^4*w^3-476*u*v^5*w^3-1544*u^4*v*w^4-9500*u^3*v^2*w^4-10280*u^2*v^3*w^4-2076*u*v^4*w^4-460*u^4*w^5-5696*u^3*v*w^5-10244*u^2*v^2*w^5-3280*u*v^3*w^5-1008*u^3*w^6-3884*u^2*v*w^6-2108*u*v^2*w^6-404*u^2*w^7-492*u*v*w^7-24*u*w^8+352*u^4*v^2*w^2+1304*u^3*v^3*w^2+952*u^2*v^4*w^2+124*u*v^5*w^2+764*u^4*v*w^3+4824*u^3*v^2*w^3+5604*u^2*v^3*w^3+1228*u*v^4*w^3+364*u^4*w^4+4836*u^3*v*w^4+9468*u^2*v^2*w^4+3332*u*v^3*w^4+1316*u^3*w^5+5568*u^2*v*w^5+3356*u*v^2*w^5+928*u^2*w^6+1252*u*v*w^6+124*u*w^7-144*u^4*v*w^2-928*u^3*v^2*w^2-1132*u^2*v^3*w^2-264*u*v^4*w^2-148*u^4*w^3-2056*u^3*v*w^3-4264*u^2*v^2*w^3-1608*u*v^3*w^3-940*u^3*w^4-4252*u^2*v*w^4-2764*u*v^2*w^4-1116*u^2*w^5-1624*u*v*w^5-264*u*w^6+24*u^4*w^2+344*u^3*v*w^2+744*u^2*v^2*w^2+296*u*v^3*w^2+348*u^3*w^3+1652*u^2*v*w^3+1136*u*v^2*w^3+740*u^2*w^4+1140*u*v*w^4+296*u*w^5-52*u^3*w^2-256*u^2*v*w^2-184*u*v^2*w^2-256*u^2*w^3-412*u*v*w^3-184*u*w^4+36*u^2*w^2+60*u*v*w^2+60*u*w^3-8*u*w^2;
> factorize(f);
Singular : signal 11 (v: 3160):
current line:>>factorize(f);<<
Segment fault/Bus error occurred at 2 because of 10202 (r:1402010493)
please inform the authors
trying to restart...

As reported at ​https://groups.google.com/d/msg/sage-support/hDFYFPq4ebg/zPmhK68SN6YJ

[mlee]

Hi Volker, this bug is already fixed in the current ​https://github.com/Singular/Sources/tree/spielwiese. I made a pull request ​https://github.com/Singular/Sources/pull/600 for the old master ​https://github.com/Singular/Sources/tree/master. Martin