1 files changed, 2 insertions, 0 deletions

diff --git a/src/lj_gc.h b/src/lj_gc.h
index ec1a9643..dd7f87ba 100644
--- a/src/lj_gc.h
+++ b/src/lj_gc.h
@@ -38,6 +38,8 @@ enum {
 
 #define curwhite(g)     ((g)->gc.currentwhite & LJ_GC_WHITES)
 #define newwhite(g, x)  (obj2gco(x)->gch.marked = (uint8_t)curwhite(g))
+#define makewhite(g, x) \
+  ((x)->gch.marked = ((x)->gch.marked & (uint8_t)~LJ_GC_COLORS) | curwhite(g))
 #define flipwhite(x)    ((x)->gch.marked ^= LJ_GC_WHITES)
 #define black2gray(x)   ((x)->gch.marked &= (uint8_t)~LJ_GC_BLACK)
 #define fixstring(s)    ((s)->marked |= LJ_GC_FIXED)