From dbb6f11e8ee1eaa496215da5c04af80ec19b4df1 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Mon, 5 Sep 2016 16:06:34 -0300
Subject: [PATCH] bug (with compat on): 'ipairs' can work with any type that
 provides an __index; so, 'pairsmeta' should not check for tables. ('pairs'
 already checks for tables through 'next'.)

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

diff --git a/lbaselib.c b/lbaselib.c
index d4c8fef2..98602952 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.312 2015/10/29 15:21:04 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.313 2016/04/11 19:18:40 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -208,8 +208,8 @@ static int luaB_type (lua_State *L) {
 
 static int pairsmeta (lua_State *L, const char *method, int iszero,
                       lua_CFunction iter) {
+  luaL_checkany(L, 1);
   if (luaL_getmetafield(L, 1, method) == LUA_TNIL) {  /* no metamethod? */
-    luaL_checktype(L, 1, LUA_TTABLE);  /* argument must be a table */
     lua_pushcfunction(L, iter);  /* will return generator, */
     lua_pushvalue(L, 1);  /* state, */
     if (iszero) lua_pushinteger(L, 0);  /* and initial value */