From e4a9e6fcca4ac2a14c9832b1a40b74cdca7016b9 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 1 Aug 2016 16:51:24 -0300
Subject: do not eliminate varargs from functions that do not use varargs
 (confuses the debug lib and gains very little in performance)

---
 lparser.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

(limited to 'lparser.c')

diff --git a/lparser.c b/lparser.c
index 2a818388..5894d8ff 100644
--- a/lparser.c
+++ b/lparser.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.c,v 2.153 2016/05/13 19:10:16 roberto Exp roberto $
+** $Id: lparser.c,v 2.154 2016/06/22 15:48:25 roberto Exp roberto $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -766,7 +766,7 @@ static void parlist (LexState *ls) {
         }
         case TK_DOTS: {  /* param -> '...' */
           luaX_next(ls);
-          f->is_vararg = 2;  /* declared vararg */
+          f->is_vararg = 1;  /* declared vararg */
           break;
         }
         default: luaX_syntaxerror(ls, "<name> or '...' expected");
@@ -962,7 +962,6 @@ static void simpleexp (LexState *ls, expdesc *v) {
       FuncState *fs = ls->fs;
       check_condition(ls, fs->f->is_vararg,
                       "cannot use '...' outside a vararg function");
-      fs->f->is_vararg = 1;  /* function actually uses vararg */
       init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0));
       break;
     }
@@ -1614,7 +1613,7 @@ static void mainfunc (LexState *ls, FuncState *fs) {
   BlockCnt bl;
   expdesc v;
   open_func(ls, fs, &bl);
-  fs->f->is_vararg = 2;  /* main function is always declared vararg */
+  fs->f->is_vararg = 1;  /* main function is always declared vararg */
   init_exp(&v, VLOCAL, 0);  /* create and... */
   newupvalue(fs, ls->envn, &v);  /* ...set environment upvalue */
   luaX_next(ls);  /* read first token */
-- 
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