From ce9609296ce5d761e58af4cccdab6ca925613bea Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 7 Sep 1998 15:59:59 -0300
Subject: function "luaL_argerror" prints wrong argument number (from a user's
 point of view) when functions have upvalues.

---
 bugs      | 9 ++++++++-
 lauxlib.c | 9 +++++----
 liolib.c  | 8 ++++----
 3 files changed, 17 insertions(+), 9 deletions(-)

diff --git a/bugs b/bugs
index 63a8acd6..64bc69d7 100644
--- a/bugs
+++ b/bugs
@@ -31,7 +31,7 @@ Tue Jan 27 17:12:36 EDT 1998
 
 ** lstring.c / ltable.c
 Wed Jan 28 14:48:12 EDT 1998
->> tables can become full of "emptys" slots, and keep growing without limits.
+>> tables can become full of "empty" slots, and keep growing without limits.
 
 ** lstrlib.c
 Mon Mar  9 15:26:09 EST 1998
@@ -41,3 +41,10 @@ Mon Mar  9 15:26:09 EST 1998
 Mon May 18 19:20:00 EST 1998
 >> arguments for "format" 'x', 'X', 'o' and 'u' must be unsigned int.
 
+
+--- Version 3.1
+
+** liolib.c / lauxlib.c
+Mon Sep  7 15:57:02 EST 1998
+>> function "luaL_argerror" prints wrong argument number (from a user's point
+of view) when functions have upvalues.
diff --git a/lauxlib.c b/lauxlib.c
index 415c4fea..c8c1f3d6 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.11 1998/06/18 16:57:03 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.12 1998/06/19 16:14:09 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -27,10 +27,11 @@ int luaL_findstring (char *name, char *list[]) {
   return -1;  /* name not found */
 }
 
-void luaL_argerror (int numarg, char *extramsg)
-{
+void luaL_argerror (int numarg, char *extramsg) {
+  lua_Function f = lua_stackedfunction(0);
   char *funcname;
-  lua_getobjname(lua_stackedfunction(0), &funcname);
+  lua_getobjname(f, &funcname);
+  numarg -= lua_nups(f);
   if (funcname == NULL)
     funcname = "???";
   if (extramsg == NULL)
diff --git a/liolib.c b/liolib.c
index 184568f7..2aba847c 100644
--- a/liolib.c
+++ b/liolib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 1.23 1998/08/24 20:14:56 roberto Exp roberto $
+** $Id: liolib.c,v 1.24 1998/08/30 20:25:24 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -284,8 +284,8 @@ static void io_seek (void) {
   FILE *f = getfile(FIRSTARG-1+1);
   int op = luaL_findstring(luaL_opt_string(FIRSTARG-1+2, "cur"), modenames);
   long offset = luaL_opt_number(FIRSTARG-1+3, 0);
-  luaL_arg_check(f, 1, "invalid file handler");
-  luaL_arg_check(op != -1, 2, "invalid mode");
+  luaL_arg_check(f, FIRSTARG-1+1, "invalid file handler");
+  luaL_arg_check(op != -1, FIRSTARG-1+2, "invalid mode");
   op = fseek(f, offset, mode[op]);
   if (op)
     pushresult(0);  /* error */
@@ -296,7 +296,7 @@ static void io_seek (void) {
 
 static void io_flush (void) {
   FILE *f = getfile(FIRSTARG);
-  luaL_arg_check(f || lua_getparam(FIRSTARG) == LUA_NOOBJECT, 1,
+  luaL_arg_check(f || lua_getparam(FIRSTARG) == LUA_NOOBJECT, FIRSTARG,
                  "invalid file handler");
   pushresult(fflush(f) == 0);
 }
-- 
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