   0  residual_call_r_v $<* fn RPyGilAllocate>, R[], <CallDescr() EF=2>
   5  residual_call_ir_i $<* fn ccall_RPyThreadStart__funcPtr>, I[$<* fn wrapper>], R[], <CallDescr(i) EF=7> -> %i0
  13  -live- %i0
  16  goto_if_not_int_eq %i0, $-1, L1
  21  raise $<* struct object>
  23  ---
  23  L1:
  23  int_return %i0
