   0  inline_call_r_i <JitCode 'ObjSpace.c_filedescriptor_w'>, R[%r0] -> %i1
   6  -live- %i0, %i1
   6  residual_call_ir_i $<* fn ccall_flock__Signed_Signed>, I[%i1, %i0], R[], <CallDescr(ii) EF=7> -> %i0
  15  -live- %i0
  15  -live- %i0
  15  goto_if_not_int_lt %i0, $0, L1
  20  residual_call_ir_i $<* fn _ll_1_threadlocalref_get__SignedLlT_Signed>, I[$CDefinedIntSymbolic('RPY_TLOFS_rpy_errno')], R[], <CallDescr(i) EF=2 OS_THREADLOCALREF_GET> -> %i0
  28  new_with_vtable <rpython.jit.backend.llsupport.descr.SizeDescr object at 0x1258a230> -> %r0
  32  setfield_gc_r %r0, $<* struct rpy_string>, FieldDescr<exceptions.EnvironmentError.inst_strerror>
  37  setfield_gc_i %r0, %i0, FieldDescr<exceptions.EnvironmentError.inst_errno>
  42  inline_call_r_r <JitCode 'wrap_oserror2__w_IOError'>, R[%r0, $<* struct pypy.interpreter.baseobjspace.W_Root>, $<* struct rpy_string>] -> %r0
  50  -live- %r0
  50  -live- %r0
  50  guard_class %r0 -> %i0
  53  -live- %r0
  53  raise %r0
  55  ---
  55  L1:
  55  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
