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, 1 insertions, 0 deletions

diff --git a/ltm.h b/ltm.h
index e308fb80..51dfe793 100644
--- a/ltm.h
+++ b/ltm.h
@@ -75,6 +75,7 @@ LUAI_FUNC void luaT_callTMres (lua_State *L, const TValue *f,
                             const TValue *p1, const TValue *p2, StkId p3);
 LUAI_FUNC void luaT_trybinTM (lua_State *L, const TValue *p1, const TValue *p2,
                               StkId res, TMS event);
+LUAI_FUNC void luaT_tryconcatTM (lua_State *L);
 LUAI_FUNC void luaT_trybinassocTM (lua_State *L, const TValue *p1,
        const TValue *p2, StkId res, int inv, TMS event);
 LUAI_FUNC void luaT_trybiniTM (lua_State *L, const TValue *p1, lua_Integer i2,