(eq): no more relying on tostring giving different strings for different tables.

1 files changed, 4 insertions, 4 deletions

diff --git a/test/luatest.lua b/test/luatest.lua
index d01ff31..f357e00 100755
--- a/test/luatest.lua
+++ b/test/luatest.lua
@@ -10,10 +10,10 @@ function eq (t1, t2, lut)
   end
 
   lut = lut or {} -- look-up table: are these 2 arrays already compared?
-  local s1, s2 = tostring (t1), tostring (t2)
-  local key = s1 < s2 and s1.."\0"..s2 or s2.."\0"..s1
-  if lut[key] then return true end
-  lut[key] = true
+  lut[t1] = lut[t1] or {}
+  if lut[t1][t2] then return true end
+  lut[t2] = lut[t2] or {}
+  lut[t1][t2], lut[t2][t1] = true, true
 
   for k,v in ipairs (t1) do
     if not eq (t2[k], v, lut) then return false end -- recursion