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add ispurewhite : is white and not shared object, see #1479 (#1480)

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云风
2021-09-27 11:26:28 +08:00
committed by GitHub
parent 9cbab6f5ec
commit 0ebecb4e6d
2 changed files with 8 additions and 9 deletions
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10
3rd/lua/lgc.c
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@@ -80,9 +80,9 @@
(x->marked = cast_byte((x->marked & ~WHITEBITS) | bitmask(BLACKBIT)))
#define valiswhite(x) (iscollectable(x) && iswhite(gcvalue(x)))
#define valiswhite(x) (iscollectable(x) && ispurewhite(gcvalue(x)))
#define keyiswhite(n) (keyiscollectable(n) && iswhite(gckey(n)))
#define keyiswhite(n) (keyiscollectable(n) && ispurewhite(gckey(n)))
/*
@@ -96,7 +96,7 @@
#define markkey(g, n) { if keyiswhite(n) reallymarkobject(g,gckey(n)); }
#define markobject(g,t) { if (iswhite(t)) reallymarkobject(g, obj2gco(t)); }
#define markobject(g,t) { if (ispurewhite(t)) reallymarkobject(g, obj2gco(t)); }
/*
** mark an object that can be NULL (either because it is really optional,
@@ -188,7 +188,7 @@ static int iscleared (global_State *g, const GCObject *o) {
markobject(g, o); /* strings are 'values', so are never weak */
return 0;
}
else return iswhite(o);
else return ispurewhite(o);
}
@@ -289,8 +289,6 @@ GCObject *luaC_newobj (lua_State *L, int tt, size_t sz) {
** (only closures can), and a userdata's metatable must be a table.
*/
static void reallymarkobject (global_State *g, GCObject *o) {
if (isshared(o))
return;
switch (o->tt) {
case LUA_VSHRSTR:
case LUA_VLNGSTR: {