Fun fact: mmap returns -1, not 0, on error.  STL may therefore not be 
detecting this as an error and throwing std::badalloc.

Try adding code to allocate that checks for mmap returning -1. 
Preferably something that calls sterror and prints function arguments 
before dying.

Kenneth

On 08/06/2012 02:28 PM, Marcin Junczys-Dowmunt wrote:
> Ouch, I hate that file. That's the only code I wrote which I do not
> fully understand myself. :)
>
> Unfortunately I do not have access to an OS X system and cannot try for
> myself. This line fills a virtual memory address pointed to by p with
> the given value. So basically this is nothing else but a write to a file.
>
> You only get a segfault, no bad alloc or something? Does the
> std::tmpfile function work under OS X and does it create writeable
> files? Could also be a pagesize problem. Pure guessing here.
>
> W dniu 06.08.2012 20:11, Hieu Hoang pisze:
>> i ran the identical command and pt on linux and it fine. The problem
>> only appears on mac osx.
>>
>> putting it into a debug, it seems to blow up in
>>       MmapAllocator.h line 158
>>
>> On 06/08/2012 18:00, Marcin Junczys-Dowmunt wrote:
>>> Just checked that toy phrase-table with your command, works fine for me.
>>>
>>>>        3. I tried compacting a 22 line phrase table (attached) and got a
>>>> segfault. The command I ran was
>>>>              ~/workspace/github/moses-smt/bin/processPhraseTableMin -in
>>>> phrase-table -out compact/phrase-table -nscores 1 -threads 2
>>>>         I'll try&  debug it myself but if you can see an obvious problem,
>>>> please let me know
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>>
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>
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