At master, configured with --download-exodusii --download-hdf5 --download-netcdf --download-pnetcdf --with-scalar-type=complex I get bunch of compiler warnings warning: passing argument 2 of ‘VecGetArrayRead’ from incompatible pointer type warning: passing argument 2 of ‘VecRestoreArrayRead’ from incompatible pointer type in src/dm/impls/plex/plexexodusii.c. Is this configuration not covered by nightly tests? I want to fix it anyway. Do you agree with the following scheme? Vec v; const PetscScalar *arr; PetscReal *arr_real; #if defined(PETSC_USE_COMPLEX) PetscInt i; #endif ... ierr = VecGetArrayRead(v, &arr);CHKERRQ(ierr); #if defined(PETSC_USE_COMPLEX) ierr = PetscMalloc1(size, &arr_real);CHKERRQ(ierr); for (i = 0; i < size; ++i) { arr_real[i] = PetscRealPart(arr[i]); #if defined(PETSC_USE_DEBUG) if (PetscImaginaryPart(arr[i])) { SETERRQ(PETSC_COMM_SELF, PETSC_ERR_SUP, "Vector contains complex numbers but only real vectors are currently supported."); } #endif } #else arr_real = (PetscReal*)arr; #endif ... ierr = VecRestoreArrayRead(v, &arr);CHKERRQ(ierr); #if defined(PETSC_USE_COMPLEX) ierr = PetscFree(arr_real);CHKERRQ(ierr); #endif Thanks, Vaclav