refs #2377

compiler/rodread.nim

@@ -898,6 +898,8 @@ proc getBody*(s: PSym): PNode =
   ## it may perform an expensive reload operation. Otherwise it's a simple
   ## accessor.
   assert s.kind in routineKinds
+  # prevent crashes due to incorrect macro transformations (bug #2377)
+  if s.ast.isNil or bodyPos >= s.ast.len: return ast.emptyNode
   result = s.ast.sons[bodyPos]
   if result == nil:
     assert s.offset != 0