1 files changed, 5 insertions, 0 deletions

diff --git a/testes/gc.lua b/testes/gc.lua
index ca8aa1bc..5d2b3085 100644
--- a/testes/gc.lua
+++ b/testes/gc.lua
@@ -288,6 +288,11 @@ x,y,z=nil
 collectgarbage()
 assert(next(a) == string.rep('$', 11))
 
+do   -- invalid mode
+  local a = setmetatable({}, {__mode = 34})
+  collectgarbage()
+end
+
 
 -- 'bug' in 5.1
 a = {}