detail (comment)

ltm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.c,v 2.30 2014/11/02 19:19:04 roberto Exp roberto $
+** $Id: ltm.c,v 2.31 2014/11/10 14:46:05 roberto Exp roberto $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -86,7 +86,7 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
 void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
                   const TValue *p2, TValue *p3, int hasres) {
   ptrdiff_t result = savestack(L, p3);
-  setobj2s(L, L->top++, f);  /* push function */
+  setobj2s(L, L->top++, f);  /* push function (assume EXTRA_STACK) */
   setobj2s(L, L->top++, p1);  /* 1st argument */
   setobj2s(L, L->top++, p2);  /* 2nd argument */
   if (!hasres)  /* no result? 'p3' is third argument */