Initialize unused value when specializing to cdata metatable.

Reported by jakitliang. #1354
2025-04-07 09:22:07 +02:00
parent 85c3f2fb6f
commit e9e4b6d302
1 changed files with 4 additions and 1 deletions
--- a/src/lj_record.c
+++ b/src/lj_record.c
@@ -854,7 +854,10 @@ int lj_record_mm_lookup(jit_State *J, RecordIndex *ix, MMS mm)
      return 0;  /* No metamethod. */
    }
    /* The cdata metatable is treated as immutable. */
-    if (LJ_HASFFI && tref_iscdata(ix->tab)) goto immutable_mt;
+    if (LJ_HASFFI && tref_iscdata(ix->tab)) {
+      mix.tab = TREF_NIL;
+      goto immutable_mt;
+    }
    ix->mt = mix.tab = lj_ir_ktab(J, mt);
    goto nocheck;
  }