Add runtime check to guard against internal error that breaks the constant assumption.
Add runtime check to guard against internal error
that breaks the constant assumption.

jriehl/numba,gmarkall/numba,numba/numba,gmarkall/numba,stonebig/numba,cpcloud/numba,cpcloud/numba,stonebig/numba,stuartarchibald/numba,numba/numba,seibert/numba,gmarkall/numba,IntelLabs/numba,cpcloud/numba,seibert/numba,gmarkall/numba,sklam/numba,gmarkall/numba,stonebig/numba,jriehl/numba,stuartarchibald/numba,jriehl/numba,stuartarchibald/numba,sklam/numba,jriehl/numba,seibert/numba,stuartarchibald/numba,stuartarchibald/numba,numba/numba,numba/numba,numba/numba,IntelLabs/numba,cpcloud/numba,jriehl/numba,stonebig/numba,IntelLabs/numba,sklam/numba,seibert/numba,stonebig/numba,sklam/numba,seibert/numba,cpcloud/numba,sklam/numba,IntelLabs/numba,IntelLabs/numba