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new field 'nilvalue' in struct 'global_State' to avoid the use of

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addresses of static variables
This commit is contained in:
Roberto Ierusalimschy
2018-06-15 16:31:22 -03:00
parent d406d3d05f
commit b95e466218
5 changed files with 17 additions and 22 deletions
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5
ltm.c
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@@ -1,5 +1,5 @@
/*
** $Id: ltm.c,v 2.68 2018/06/01 17:40:38 roberto Exp roberto $
** $Id: ltm.c,v 2.69 2018/06/08 19:06:59 roberto Exp roberto $
** Tag methods
** See Copyright Notice in lua.h
*/
@@ -69,7 +69,6 @@ const TValue *luaT_gettm (Table *events, TMS event, TString *ename) {
const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
static const TValue nilobject = {NILCONSTANT};
Table *mt;
switch (ttype(o)) {
case LUA_TTABLE:
@@ -81,7 +80,7 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
default:
mt = G(L)->mt[ttype(o)];
}
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &nilobject);
return (mt ? luaH_getshortstr(mt, G(L)->tmname[event]) : &G(L)->nilvalue);
}