From 5c8770f8969a73cf4ca503f54c2217f76de62e04 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Sat, 13 May 2017 10:04:33 -0300
Subject: back to old-style vararg system (with vararg table collecting extra
 arguments)

---
 ldo.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'ldo.h')

diff --git a/ldo.h b/ldo.h
index b2065cfa..4717620f 100644
--- a/ldo.h
+++ b/ldo.h
@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.h,v 2.28 2015/11/23 11:29:43 roberto Exp roberto $
+** $Id: ldo.h,v 2.29 2015/12/21 13:02:14 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -33,6 +33,14 @@
 #define restorestack(L,n)	((TValue *)((char *)L->stack + (n)))
 
 
+/* macro to check stack size, preserving 'p' */
+#define checkstackp(L,n,p)  \
+  luaD_checkstackaux(L, n, \
+    ptrdiff_t t__ = savestack(L, p);  /* save 'p' */ \
+    luaC_checkGC(L),  /* stack grow uses memory */ \
+    p = restorestack(L, t__))  /* 'pos' part: restore 'p' */
+
+
 /* type of protected functions, to be ran by 'runprotected' */
 typedef void (*Pfunc) (lua_State *L, void *ud);
 
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