Opened 10 years ago

Closed 10 years ago

## #12918 closed defect (duplicate)

# segmentation fault with multivariate polynomial factorization

Reported by: | Paul Zimmermann | Owned by: | tbd |
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Priority: | major | Milestone: | sage-duplicate/invalid/wontfix |

Component: | factorization | Keywords: | |

Cc: | Merged in: | ||

Authors: | Reviewers: | Jeroen Demeyer | |

Report Upstream: | Fixed upstream, in a later stable release. | Work issues: | |

Branch: | Commit: | ||

Dependencies: | Stopgaps: |

### Description

with Sage 4.8 I get:

sage: U.<x,y> = GF(2)[] sage: factor(x^6 + y^5 + x^5 + y^4,proof=False) /usr/local/sage-4.8-linux-64bit-ubuntu_10.04.3_lts-x86_64-Linux/local/lib/libcsage.so(print_backtrace+0x31)[0x2b670685e3a3] ... ------------------------------------------------------------------------ Unhandled SIGSEGV: A segmentation fault occurred in Sage. This probably occurred because a *compiled* component of Sage has a bug in it and is not properly wrapped with sig_on(), sig_off(). You might want to run Sage under gdb with 'sage -gdb' to debug this. Sage will now terminate. ------------------------------------------------------------------------ local/bin/sage-sage: line 303: 7365 Segmentation fault sage-ipython "$@" -i

### Change History (7)

### comment:1 Changed 10 years ago by

Report Upstream: | N/A → Reported upstream. Little or no feedback. |
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### comment:2 Changed 10 years ago by

Report Upstream: | Reported upstream. Little or no feedback. → Fixed upstream, in a later stable release. |
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fixed upstream. I asked if they plan a new release of Singular soon.

Paul

### comment:3 Changed 10 years ago by

answer from the Singular developers: There will be a minor release 3-1-4-3 next week.

Paul

### comment:4 Changed 10 years ago by

here is another test case which Seg. faults with Sage 5.0:

sage: U.<tt,xx> = GF(2)[] sage: factor(xx^6 + tt^5 + tt^4 + tt*xx^3,proof=False) ... Unhandled SIGSEGV: A segmentation fault occurred in Sage.

Paul

### comment:5 Changed 10 years ago by

Milestone: | sage-5.3 → sage-duplicate/invalid/wontfix |
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Reviewers: | → Jeroen Demeyer |

Status: | new → needs_review |

Fixed by #13237.

### comment:6 Changed 10 years ago by

Status: | needs_review → positive_review |
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### comment:7 Changed 10 years ago by

Resolution: | → duplicate |
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Status: | positive_review → closed |

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reported upstream: http://www.singular.uni-kl.de:8002/trac/ticket/425