Fix build on c++ compiler

2 files changed, 2 insertions, 2 deletions

diff --git a/src/gc.c b/src/gc.c
index 374072ce5..3ee5da1f8 100644
--- a/src/gc.c
+++ b/src/gc.c
@@ -325,7 +325,7 @@ struct RBasic*
 mrb_obj_alloc(mrb_state *mrb, enum mrb_vtype ttype, struct RClass *cls)
 {
   struct RBasic *p;
-  static const RVALUE RVALUE_zero = { { { 0 } } };
+  static const RVALUE RVALUE_zero = { { { MRB_TT_FALSE } } };
 
 #ifdef MRB_GC_STRESS
   mrb_garbage_collect(mrb);
diff --git a/src/state.c b/src/state.c
index 8bd222fb5..db31d7037 100644
--- a/src/state.c
+++ b/src/state.c
@@ -53,7 +53,7 @@ mrb_alloca(mrb_state *mrb, size_t size)
 {
   struct alloca_header *p;
 
-  p = mrb_malloc(mrb, sizeof(struct alloca_header)+size);
+  p = (struct alloca_header*) mrb_malloc(mrb, sizeof(struct alloca_header)+size);
   p->next = mrb->mems;
   mrb->mems = p;
   return (void*)p->buf;