The attached file generates this error on Linux with icpc 19.0, compiled with "icpc -g -c bug.cpp"
/scratch/kbelco/modernization/tools/../simd/avx.hpp(29): internal error: assertion failed at: "shared/cfe/edgcpfe/decls.c", line 9448
static constexpr unary_value initialize = _mm256_set1_epi32;