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This commit is contained in:
Roberto Ierusalimschy 2008-01-17 14:24:30 -02:00
parent daddc57abd
commit 56c17ba4c7
1 changed files with 3 additions and 4 deletions
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7
lauxlib.c
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@ -1,5 +1,5 @@
/*
** $Id: lauxlib.c,v 1.174 2007/09/14 13:26:28 roberto Exp roberto $
** $Id: lauxlib.c,v 1.175 2008/01/03 17:07:59 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
@ -586,14 +586,13 @@ static int libsize (const luaL_Reg *l) {
LUALIB_API void luaL_register (lua_State *L, const char *libname,
const luaL_Reg *l) {
if (libname) {
int size = libsize(l);
/* check whether lib already exists */
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", size);
luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1);
lua_getfield(L, -1, libname); /* get _LOADED[libname] */
if (!lua_istable(L, -1)) { /* not found? */
lua_pop(L, 1); /* remove previous result */
/* try global variable (and create one if it does not exist) */
if (luaL_findtable(L, LUA_GLOBALSINDEX, libname, size) != NULL)
if (luaL_findtable(L, LUA_GLOBALSINDEX, libname, libsize(l)) != NULL)
luaL_error(L, "name conflict for module " LUA_QS, libname);
lua_pushvalue(L, -1);
lua_setfield(L, -3, libname); /* _LOADED[libname] = new table */