[LLVMdev] Debugging my pass with llvm

[John Criswell]

ambika wrote:
> Hi,
>
> I have a pass named MyAna in directory /llvm-obj/lib/myana
> When i do make it compiles succesfully but when I try to load it I get a 
> segmentation fault, ie when I run
>
> opt -load ../llvm-obj/Release/lib/MyAna.so -my-ana t.bc
>
> I get segmentation fault.
> I used bugpoint as :
>
> bugpoint opt -load ../llvm-obj/Release/lib/MyAna.so -my-ana t.bc
>
> I found out that some condition is failing in a file. But I am not able 
> to determine the flow. ie I want to backtrace from this point.
> How can I do it?
>
> I tried using gdb but I am not able to compile my program with -g option.
>   
I believe if you compile your pass using "make ENABLE_OPTIMIZED=0", the 
LLVM build system will build your pass with debugging symbols.  You 
should then be able to run opt with gdb and see where your pass is crashing.

-- John T.

> It will be great if someone can help.
>
> regards,
> Ambika
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