From 3d19aee78f7f9140548bd550559092eeff837409 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 20 Dec 2004 13:50:00 -0200
Subject: `luac' may generate code without upvalue names

---
 ldebug.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ldebug.c b/ldebug.c
index fa88ffbd..ca1f5410 100644
--- a/ldebug.c
+++ b/ldebug.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ldebug.c,v 2.10 2004/10/07 17:27:00 roberto Exp roberto $
+** $Id: ldebug.c,v 2.11 2004/12/03 20:35:33 roberto Exp roberto $
 ** Debug Interface
 ** See Copyright Notice in lua.h
 */
@@ -477,7 +477,7 @@ static const char *getobjname (CallInfo *ci, int stackpos, const char **name) {
       }
       case OP_GETUPVAL: {
         int u = GETARG_B(i);  /* upvalue index */
-        *name = getstr(p->upvalues[u]);
+        *name = p->upvalues ? getstr(p->upvalues[u]) : "?";
         return "upvalue";
       }
       case OP_SELF: {
-- 
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