Segmentation fault when using ccall to call a BLAS-like extension function from Intel MKL

[giordano]

@NatSpring

$ nm -D /opt/intel/oneapi/mkl/latest/lib/libmkl_rt.so | grep mkl_dimatcopy
00000000005ff510 T mkl_dimatcopy
00000000005ff510 T mkl_dimatcopy_
00000000005ff640 T mkl_dimatcopy_batch
00000000005ff640 T mkl_dimatcopy_batch_
00000000005ff770 T mkl_dimatcopy_batch_strided
00000000005ff770 T mkl_dimatcopy_batch_strided_

In hindsight, the fact that both the C and the Fortran symbols point to the same address should have been a giveaway that all arguments must be pointers (only way that’d work in Fortran), despite what’s written in the documentation.