No longer let the GC replace dead keys with the LJ_TDEADKEY tag.

Important: this changes the semantics of the write barrier!
Carefully read the big comment block in lj_obj.h
This helps HREFK key slot specialization and allows safely hoisting
HREF/HREFK across GC steps, too (fix for a barely reproducible bug).
Dead keys are only removed during a table resize (as before).

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lj_meta.c b/src/lj_meta.c
index c8ac18d6..41124fdc 100644
--- a/src/lj_meta.c
+++ b/src/lj_meta.c
@@ -134,7 +134,7 @@ TValue *lj_meta_tset(lua_State *L, cTValue *o, cTValue *k)
       TValue *tv = lj_tab_set(L, t, k);
       if (!tvisnil(tv) ||
           !(mo = lj_meta_fast(L, tabref(t->metatable), MM_newindex))) {
-        if (isblack(obj2gco(t))) lj_gc_barrierback(G(L), t);
+        lj_gc_anybarriert(L, t);
         return tv;
       }
     } else if (tvisnil(mo = lj_meta_lookup(L, o, MM_newindex))) {