Recursively calling a closure iterator results in a compiler crash

[dom96]

iterator test(x: int): int {.closure.} =
  var b = test
  if x == 5: yield 1
  else:
    yield b(x+1)

var t = test
echo t()

Crashes with:

Traceback (most recent call last)
nimrod.nim(79)           nimrod
nimrod.nim(55)           HandleCmdLine
main.nim(296)            MainCommand
main.nim(72)             CommandCompileToC
modules.nim(193)         CompileProject
modules.nim(151)         compileModule
passes.nim(192)          processModule
passes.nim(136)          processTopLevelStmt
sem.nim(300)             myProcess
sem.nim(274)             SemStmtAndGenerateGenerics
semstmts.nim(1238)       semStmt
semexprs.nim(778)        semExprNoType
semexprs.nim(1939)       semExpr
semstmts.nim(1055)       semIterator
semstmts.nim(1026)       semProcAux
transf.nim(710)          transformBody
transf.nim(694)          processTransf
transf.nim(682)          transform
transf.nim(108)          transformSons
transf.nim(668)          transform
transf.nim(108)          transformSons
transf.nim(677)          transform
transf.nim(108)          transformSons
transf.nim(594)          transform
transf.nim(135)          transformSym
transf.nim(117)          transformSymAux
lambdalifting.nim(715)   liftIterSym
lambdalifting.nim(218)   getHiddenParam
system.nim(2501)         hiddenRaiseAssert
system.nim(1804)         raiseAssert
Error: unhandled exception: hidden.Kind == nkSym  [EAssertionFailed]

[dom96]

The fact that this does not work seems to be expected. The manual states: "Both inline and closure iterators cannot be recursive."

This may be a showstopper for me.

[Varriount]

This no longer crashes. Instead, the compiler prints out a nice error message reporting the recursion.
Since this is expected behavior, I'm closing the issue.