add read barrier to value.p

API changes:
- value.p must be accessed via mrb_value_p macro
- value.p must be mutated via MRB_SET_VALUE_P macro

1 files changed, 1 insertions, 1 deletions

diff --git a/src/vm.c b/src/vm.c
index 4d99ad413..7d01239be 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -37,7 +37,7 @@ void abort(void);
 #define SET_NIL_VALUE(r) MRB_SET_VALUE(r, MRB_TT_FALSE, value.i, 0)
 #define SET_INT_VALUE(r,n) MRB_SET_VALUE(r, MRB_TT_FIXNUM, value.i, (n))
 #define SET_SYM_VALUE(r,v) MRB_SET_VALUE(r, MRB_TT_SYMBOL, value.sym, (v))
-#define SET_OBJ_VALUE(r,v) MRB_SET_VALUE(r, (((struct RObject*)(v))->tt), value.p, (v))
+#define SET_OBJ_VALUE(r,v) MRB_SET_VALUE_P(r, (((struct RObject*)(v))->tt), (v))
 #ifdef MRB_NAN_BOXING
 #define SET_FLT_VALUE(mrb,r,v) r.f = (v)
 #elif defined(MRB_WORD_BOXING)