fixes #140

tests/compile/tmacro1.nim

@@ -18,13 +18,3 @@ macro test*(a: stmt): stmt =
 
 test:
   "hi"
-
-macro dump(n: stmt): stmt =
-  dump(n)
-  if kind(n) == nnkNone:
-    nil
-  else:
-    hint($kind(n))
-    for i in countUp(0, len(n)-1):
-      nil
-

tests/reject/trecmacro.nim

@@ -0,0 +1,14 @@
+discard """
+  file: "trecmacro.nim"
+  line: 8
+  errormsg: "recursive dependency: 'dump'"
+"""
+
+macro dump(n: stmt): stmt =
+  dump(n)
+  if kind(n) == nnkNone:
+    nil
+  else:
+    hint($kind(n))
+    for i in countUp(0, len(n)-1):
+      nil