1 files changed, 7 insertions, 2 deletions

diff --git a/testes/tracegc.lua b/testes/tracegc.lua
index a8c929df..c1154f90 100644
--- a/testes/tracegc.lua
+++ b/testes/tracegc.lua
@@ -1,10 +1,15 @@
 -- track collections
 
+
 local M = {}
 
 -- import list
-local setmetatable, stderr, collectgarbage =
-         setmetatable, io.stderr, collectgarbage
+local stderr, collectgarbage = io.stderr, collectgarbage
+
+-- the debug version of setmetatable does not create any object (such as
+-- a '__metatable' string), and so it is more appropriate to be used in
+-- a finalizer
+local setmetatable = require"debug".setmetatable
 
 global none