[pygr-notify] Issue 84 in pygr: Slicing on LPO produces Bus error

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Status: Accepted
Owner: pygr-bug... at googlegroups.com
CC: cjlee112
Labels: Type-Defect Priority-High

New issue 84 by alexander.alekseyenko: Slicing on LPO produces Bus error
http://code.google.com/p/pygr/issues/detail?id=84

What steps will reproduce the problem?
from pygr import cnestedlist, sequence
s1=sequence.Sequence('aaaa','s1')
s2=sequence.Sequence('bbbb','s2')
msa = cnestedlist.NLMSA(mode='memory')
msa[0:4]+=s1
msa[0:4]+=s2
msa.build()
msaSlice = msa[0:4]
Bus error


What is the expected output? What do you see instead?
Expect to see an NLMSASlice object created, instead a crash occurs.

Suspected related error can be obtained by calling regions() method of
NLMSASlice produced through a normal sequence slicing, e.g.
msa[s1].regions()


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