Internal error: backend signals

[ding_e_]

I'm programming on MIC recently, but I have met a disappointing problem. When I use icpc to compile my program, I find it spews an error, which is "Internal error, backend signals". Unfortunately, there are no more clues. So I want to know how can I do to correct this error, how it happens, and the possible reasons to this error. I use OpenMP and C++, and the execute mode is offload.  Thanks!

[Kevin_D_Intel]

I'm sorry to hear about the internal error. There is not one particular cause for this sort of error and to fix and find a work around requires our seeing the code and reproducing the error. The backend internal error could related to an optimization or code generation. It is a guess, but you might be able to avoid the error by dropping the optimization to -O1 or -O0.

Can you provide us with the code that causes the error?