Change in the handling of 'L->top' when calling metamethods

Instead of updating 'L->top' in every place that may call a
metamethod, the metamethod functions themselves (luaT_trybinTM and
luaT_callorderTM) correct the top. (When calling metamethods from
the C API, however, the callers must preserve 'L->top'.)

1 files changed, 5 insertions, 2 deletions

diff --git a/testes/strings.lua b/testes/strings.lua
index 0e7874bf..aa039c4f 100644
--- a/testes/strings.lua
+++ b/testes/strings.lua
@@ -167,8 +167,11 @@ do  -- tests for '%p' format
     local t1 = {}; local t2 = {}
     assert(string.format("%p", t1) ~= string.format("%p", t2))
   end
-  assert(string.format("%p", string.rep("a", 10)) ==
-         string.format("%p", string.rep("a", 10)))     -- short strings
+  do     -- short strings
+    local s1 = string.rep("a", 10)
+    local s2 = string.rep("a", 10)
+  assert(string.format("%p", s1) == string.format("%p", s2))
+  end
   do     -- long strings
     local s1 = string.rep("a", 300); local s2 = string.rep("a", 300)
     assert(string.format("%p", s1) ~= string.format("%p", s2))