## #425 closed bug (fixed)

# segmentation fault with multivariate polynomial factorization

Reported by: | Owned by: | somebody | |
---|---|---|---|

Priority: | blocker | Milestone: | 3-1-5 and higher |

Component: | libfac | Version: | 3-1-4 |

Keywords: | Cc: |

### Description

from within Sage 4.8:

singular: ring r=2,(x,y),dp; singular: poly p=x^6 + y^5 + x^5 + y^4; singular: factorize(p); ... RuntimeError: Singular error: Singular : signal 11 (v: 3133/ 14405 ): current line:>>factorize(p);<< Segment fault/Bus error occurred at fed61801 because of 210287 (r:1336640313) please inform the authors trying to restart...

cf trac.sagemath.org/sage_trac/ticket/12918

Paul Zimmermann

### Change History (5)

### comment:1 Changed 11 years ago by

Resolution: | → fixed |
---|---|

Status: | new → closed |

### comment:2 follow-up: 3 Changed 11 years ago by

thanks. Do you plan a new release soon with that patch and that of #424, so that we can upgrade the Singular version in Sage?

Paul Zimmermann

### comment:3 Changed 11 years ago by

### comment:4 follow-up: 5 Changed 11 years ago by

here is another test case (with the version of Singular shipped with Sage 5.0, i.e., 3-1-3-3.p6):

singular: ring r=2,(x,y),dp; ring r=2,(x,y),dp; singular: poly p=x^6 + y^5 + y^4 + y*x^3; poly p=x^6 + y^5 + y^4 + y*x^3; singular: factorize(p); ... Segment fault/Bus error occurred at 44b84d01 because of 10287 (r:1337846517)

Paul Zimmermann

### comment:5 Changed 11 years ago by

Replying to Paul.Zimmermann@…:

here is another test case (with the version of Singular shipped with Sage 5.0, i.e., 3-1-3-3.p6):

singular: ring r=2,(x,y),dp; ring r=2,(x,y),dp; singular: poly p=x^6 + y^5 + y^4 + y*x^3; poly p=x^6 + y^5 + y^4 + y*x^3; singular: factorize(p); ... Segment fault/Bus error occurred at 44b84d01 because of 10287 (r:1337846517)Paul Zimmermann

This one's fixed as well in the most current version.

Martin

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solved in current master branch