# HG changeset patch
# User jbe
# Date 1452625397 -3600
# Node ID beb1e7925a52f6e162cfbf8391fac5a0c3dffc27
# Parent  553a1a9dbc4c4dd2d9470ec9dad198bb76b02966
Stack traceback for "coro" (initializers/finalizers)

diff -r 553a1a9dbc4c -r beb1e7925a52 framework/env/execute/_initializers.lua
--- a/framework/env/execute/_initializers.lua	Tue Jan 12 19:30:59 2016 +0100
+++ b/framework/env/execute/_initializers.lua	Tue Jan 12 20:03:17 2016 +0100
@@ -1,7 +1,6 @@
 function execute._initializers(initializer_path_element)
-  local yieldvalue1 = {}
-  local yieldvalue2 = {}
-  local coro = coroutine.wrap(function()
+  local yieldvalue_inner = {}
+  local coro = coroutine.create(function()
     execute.multi_wrapped(
       execute._create_sorted_execution_list(
         function(add_by_path)
@@ -13,18 +12,25 @@
         end
       ),
       function()
-        coroutine.yield(yieldvalue1)
+        coroutine.yield(yieldvalue_inner)
       end
     )
-    return yieldvalue2
   end)
-  local yieldvalue = coro()
-  if yieldvalue == yieldvalue2 then
+  local success, yieldvalue = coroutine.resume(coro)
+  if not success then
+    error(debug.traceback(coro, "Error in initializer"))
+  end
+  if coroutine.status(coro) == "dead" then
     error("Initializers failed to call execute.inner()")
-  elseif yieldvalue ~= yieldvalue1 then
-    error("Unexpected yield in initializers")
+  elseif yieldvalue ~= yieldvalue_inner then
+    error("Unexpected yield in initializer")
   end
   execute._finalizers[#execute._finalizers+1] = function()
-    assert(coro() == yieldvalue2, "Unexpected yield in finalizers")
+    if not coroutine.resume(coro) then
+      error(debug.traceback(coro, "Error in finalizer"))
+    end
+    if coroutine.status(coro) ~= "dead" then
+      error("Unexpected yield in finalizer")
+    end
   end
 end