[LLVMdev] UNREACHABLE executed! error while trying to generate PTX

[upit]

OK. That helps.
It does flash a warning though

[DEVICE-C++] nbody.kernel.cpp
nbody.kernel.cpp:29:9: warning: '__constant__' macro redefined
#define __constant__ __attribute__((address_space(2)))
        ^
/opt/cuda/include/host_defines.h:183:9: note: previous definition is here
#define __constant__ \
        ^
1 warning generated.

Another question is 
What about extern __shared__ ?

I can see that the error goes away if I replace "extern __shared__ float4
sharedPos[]" with "__shared__ float4* sharedPos;". Do I have to dynamically
allocate the shared memory  by specifying size in kernel Launch? If so, why
doesn't the second use of the same statement in another function cause the
error ?

I am using 3.2. 





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