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use of a common `dummynode' for all empty tables

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This commit is contained in:
Roberto Ierusalimschy
2002-04-23 12:04:39 -03:00
parent f1a1bb23fe
commit 383e8b9e77
4 changed files with 46 additions and 35 deletions
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5
lstate.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstate.c,v 1.89 2002/04/16 17:08:28 roberto Exp roberto $
** $Id: lstate.c,v 1.90 2002/04/22 14:40:23 roberto Exp roberto $
** Global State
** See Copyright Notice in lua.h
*/
@@ -69,6 +69,9 @@ static void f_luaopen (lua_State *L, void *ud) {
G(L)->rootupval = NULL;
G(L)->rootudata = NULL;
G(L)->tmudata = NULL;
setnilvalue(key(G(L)->dummynode));
setnilvalue(val(G(L)->dummynode));
G(L)->dummynode->next = NULL;
G(L)->nblocks = sizeof(lua_State) + sizeof(global_State);
stack_init(L, L); /* init stack */
/* create default meta table with a dummy table, and then close the loop */