C++ compilability -- make mrb_object() macro return an RObject, not void

1 files changed, 3 insertions, 3 deletions

diff --git a/include/mruby.h b/include/mruby.h
index 9e7d20351..ed5fe79d2 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -81,7 +81,7 @@ typedef struct mrb_value {
 #define mrb_fixnum(o) (o).value.i
 #define mrb_float(o)  (o).value.f
 #define mrb_symbol(o) (o).value.sym
-#define mrb_object(o) (o).value.p
+#define mrb_object(o) ((struct RObject *) (o).value.p)
 #define FIXNUM_P(o)   ((o).tt == MRB_TT_FIXNUM)
 #define UNDEF_P(o)    ((o).tt == MRB_TT_UNDEF)
 
@@ -368,11 +368,11 @@ int mrb_gc_arena_save(mrb_state*);
 void mrb_gc_arena_restore(mrb_state*,int);
 void mrb_gc_mark(mrb_state*,struct RBasic*);
 #define mrb_gc_mark_value(mrb,val) do {\
-  if ((val).tt >= MRB_TT_OBJECT) mrb_gc_mark((mrb), mrb_object(val));\
+  if ((val).tt >= MRB_TT_OBJECT) mrb_gc_mark((mrb), (struct RBasic *) mrb_object(val));\
 } while (0);
 void mrb_field_write_barrier(mrb_state *, struct RBasic*, struct RBasic*);
 #define mrb_field_write_barrier_value(mrb, obj, val) do{\
-  if ((val.tt >= MRB_TT_OBJECT)) mrb_field_write_barrier((mrb), (obj), mrb_object(val));\
+  if ((val.tt >= MRB_TT_OBJECT)) mrb_field_write_barrier((mrb), (obj), (struct RBasic *) mrb_object(val));\
 } while (0);
 void mrb_write_barrier(mrb_state *, struct RBasic*);