netcdf ncf199 {
dimensions:
        F1 = 3 ;
	R1 = UNLIMITED ;
variables:
	int fr(F1,R1);
data:
// This causes assertion violation: 
// assertion failure: (dimindex < lastunlimited && (dimset->dimsyms[dimindex]->dim.isunlimited))
	fr = {1,2}, {3,4}, {5,6} ;
}