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detail ('luaL_getmetatable' does not return a boolean, but a tag)

This commit is contained in:
Roberto Ierusalimschy 2015-02-03 15:38:24 -02:00
parent b3996c55f6
commit 90d016980f
1 changed files with 2 additions and 2 deletions
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4
lauxlib.c
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@ -1,5 +1,5 @@
/* /*
** $Id: lauxlib.c,v 1.278 2014/12/13 17:47:58 roberto Exp roberto $ ** $Id: lauxlib.c,v 1.279 2014/12/14 18:32:26 roberto Exp roberto $
** Auxiliary functions for building Lua libraries ** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h ** See Copyright Notice in lua.h
*/ */
@ -286,7 +286,7 @@ LUALIB_API int luaL_execresult (lua_State *L, int stat) {
*/ */
LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) { LUALIB_API int luaL_newmetatable (lua_State *L, const char *tname) {
if (luaL_getmetatable(L, tname)) /* name already in use? */ if (luaL_getmetatable(L, tname) != LUA_TNIL) /* name already in use? */
return 0; /* leave previous value on top, but return 0 */ return 0; /* leave previous value on top, but return 0 */
lua_pop(L, 1); lua_pop(L, 1);
lua_newtable(L); /* create metatable */ lua_newtable(L); /* create metatable */