[LLVMdev] Possible bug in DFAPacketizer::ReadTable

[Anshuman Dasgupta]

I see. I couldn't reproduce the invalid read on Hexagon either. I'll try 
to reverse engineer a test case. Not having test coverage for a 
potential segfault makes me extremely wary.

Thanks
-Anshu

---
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, 
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On 12/13/2012 1:53 AM, Carlos Sánchez de La Lama wrote:
> Hi Anshu,
>
> the "test case" I referred to requires the compilation of our whole 
> back-end. It segdaults when using gcc-4.4.3 under Ubuntu 10.04, with 
> other combinations I have tested it still happens (before your patch) 
> but is not noticeable unless using gdb. I have tried making valgrind 
> catch it but no success... so I guess the only way to *see* it is 
> using the debugger.
>
> I remember seeing it happen (though not segfault) on Hexagon as well 
> but now I seem unable to reproduce it :S
>
> BR
>
> Carlos
>
>
> 2012/12/11 Anshuman Dasgupta <adasgupt at codeaurora.org 
> <mailto:adasgupt at codeaurora.org>>
>
>     Great! Can you please check in that test case or better still, a
>     reduced version of that test.
>
>
>     Thanks
>     -Anshu
>
>     ---
>     Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
>     hosted by The Linux Foundation
>
>     On 12/11/2012 5:47 AM, Carlos Sánchez de La Lama wrote:
>>     Hi again,
>>
>>     I can confirm r169783 fixes the problem. My testbench segfaulted
>>     in r169782 but works after your commit.
>>
>>     We can close the issue.
>>
>>     Thanks,
>>
>>     Carlos
>>
>>
>>     2012/12/11 Carlos Sánchez de La Lama <csanchezdll at gmail.com
>>     <mailto:csanchezdll at gmail.com>>
>>
>>         Hi Anshu,
>>
>>         I got a testbench which fails (and segfaults) consistently
>>         with an environment (gcc + os) conveniently preserved in a
>>         virtual machine. I will confirm that it is gone there and report.
>>
>>         Thanks for the fix :)
>>
>>
>>         Carlos
>>
>

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