#12804: infinite loop in find method of a finite word
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Reporter: slabbe | Owner: sage-combinat
Type: defect | Status: needs_info
Priority: major | Milestone: sage-6.4
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: André Apitzsch | Reviewers: Mike Hansen
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Description changed by vdelecroix:
Old description:
> The bug appears in the last two lines :
>
> {{{
> Salut,
>
> Un participant à un TP sage (à l'EJCIM 2012) a décelé un bug :
>
> sage: s = WordMorphism("a->a")
> sage: w = Word("a")
> sage: w2 = s(w)
> sage: w.find("a")
> 0
> sage: w2.find(Word("a"))
> 0
>
> Pour l'instant tout va bien. Les deux problèmes sont :
>
> sage: w2.find("a",end=1)
> -1
> sage: w2.find("a")
> --> ça boucle
>
> À la prochaine,
> Timo
>
> }}}
New description:
{{{
sage: w = Word(iter("a"))
sage: w.find("a")
... hanging ...
}}}
Original report (the bug appears in the last two lines):
{{{
Salut,
Un participant à un TP sage (à l'EJCIM 2012) a décelé un bug :
sage: s = WordMorphism("a->a")
sage: w = Word("a")
sage: w2 = s(w)
sage: w.find("a")
0
sage: w2.find(Word("a"))
0
Pour l'instant tout va bien. Les deux problèmes sont :
sage: w2.find("a",end=1)
-1
sage: w2.find("a")
--> ça boucle
À la prochaine,
Timo
}}}
--
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Ticket URL: <http://trac.sagemath.org/ticket/12804#comment:10>
Sage <http://www.sagemath.org>
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and MATLAB
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