Weird.  It's already checked that contextFactor is non-empty.  This
could be a bad or NULL Word * object or factor set incorrectly.

Are you using factors?  What are your LM lines from moses.ini?

On 02/10/11 04:39, Christian Rishøj Jensen wrote:
> 
> I am seeing a segmentation fault in KenLM this morning:
> 
> reading bin ttable
> size of OFF_T 8
> binary phrasefile loaded, default OFF_T: -1
> reading bin ttable
> size of OFF_T 8
> binary phrasefile loaded, default OFF_T: -1
> Collecting options took 0.700 seconds
> 
> Program received signal SIGSEGV, Segmentation fault.
> GetValueGivenState (this=0x14dd8c0, contextFactor=<value optimized out>, 
> state=..., len=0x7fffffffd72c) at LanguageModelKen.cpp:179
> 179           std::size_t factor = 
> contextFactor.back()->GetFactor(GetFactorType())->GetId();
> (gdb) where
> #0  GetValueGivenState (this=0x14dd8c0, contextFactor=<value optimized out>, 
> state=..., len=0x7fffffffd72c) at LanguageModelKen.cpp:179
> #1  0x00000000004927c8 in Moses::LanguageModel::Evaluate (this=0x14e3ee0, 
> hypo=..., ps=<value optimized out>, out=<value optimized out>)
>     at LanguageModel.cpp:227
> #2  0x0000000000426d5b in Moses::Hypothesis::CalcScore (this=0x5c02010, 
> futureScore=<value optimized out>) at Hypothesis.cpp:298
> #3  0x000000000044cc9a in Moses::SearchNormal::ExpandHypothesis 
> (this=0x22bed80, hypothesis=..., transOpt=<value optimized out>, 
>     expectedScore=<value optimized out>) at SearchNormal.cpp:308
> #4  0x000000000044ceb9 in Moses::SearchNormal::ExpandAllHypotheses 
> (this=0x22bed80, hypothesis=..., startPos=<value optimized out>, 
>     endPos=<value optimized out>) at SearchNormal.cpp:281
> #5  0x000000000044d23b in Moses::SearchNormal::ProcessOneHypothesis 
> (this=0x22bed80, hypothesis=<value optimized out>) at SearchNormal.cpp:247
> #6  0x000000000044e5a0 in Moses::SearchNormal::ProcessSentence 
> (this=0x22bed80) at SearchNormal.cpp:95
> #7  0x000000000043081c in Moses::Manager::ProcessSentence 
> (this=0x7fffffffdfc0) at Manager.cpp:100
> #8  0x000000000040a518 in TranslationTask::Run (this=0x22bd830) at Main.cpp:87
> #9  0x00000000004086cf in main (argc=<value optimized out>, argv=<value 
> optimized out>) at Main.cpp:392
> 
> Is it obvious to anyone what might be the cause of this?
> 
> I am using binarized, memory mapped language models.
> 
> best 
> Christian
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