node not accessible compiler crash with macros

[dom96]

import macros

macro def(x: expr, y: stmt): stmt {.immediate.} =
  expectKind(x, nnkInfix)
  #newProc(x
  echo treeRepr(x)

def name,(a, b: cint) => nil

Crashes with:

Traceback (most recent call last)
nimrod.nim(91)           nimrod
nimrod.nim(55)           handleCmdLine
main.nim(308)            mainCommand
main.nim(73)             commandCompileToC
modules.nim(194)         compileProject
modules.nim(152)         compileModule
passes.nim(192)          processModule
passes.nim(136)          processTopLevelStmt
sem.nim(405)             myProcess
sem.nim(379)             semStmtAndGenerateGenerics
semstmts.nim(1370)       semStmt
semexprs.nim(858)        semExprNoType
semexprs.nim(1970)       semExpr
sem.nim(310)             semMacroExpr
vm.nim(1387)             evalMacroCall
vm.nim(972)              rawExecute
Error: unhandled exception: node is not accessible [EInvalidField]