isl_tab.c: push_union: handle NULL input

[isl.git] / test_inputs / codegen / omega / lefur00-0.in

{ s0[In_1, In_2, In_3, In_4] -> [In_1, In_2, In_3, In_4] : In_3 >= 1 and In_4 >= In_3 and In_4 <= 1 + 2In_3 and In_3 <= 1000 and In_4 >= 200In_1 - In_3 and In_4 <= 199 + 200In_1 - In_3 and 2In_4 >= 200In_2 + In_3 and 2In_4 <= 199 + 200In_2 + In_3 }
{  :  }
{ [i0, i1, i2, i3] -> atomic[o0] : o0 <= 2; [i0, i1, i2, i3] -> separate[o0] : o0 >= 3 }