From 19b82944f898aed3057b80512dd5c97e4fad98a3 Mon Sep 17 00:00:00 2001
From: ksss <co000ri@gmail.com>
Date: Wed, 25 Jun 2014 08:38:06 +0900
Subject: Proc#arity return 0 when opcode was not OP_ENTER

---
 src/proc.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src')

diff --git a/src/proc.c b/src/proc.c
index a61296ed4..1511725d9 100644
--- a/src/proc.c
+++ b/src/proc.c
@@ -156,6 +156,12 @@ mrb_proc_arity(mrb_state *mrb, mrb_value self)
     // TODO cfunc aspec not implemented yet
     return mrb_fixnum_value(-1);
   }
+
+  // arity is depend on OP_ENTER
+  if (GET_OPCODE(*iseq) != OP_ENTER) {
+    return mrb_fixnum_value(0);
+  }
+
   aspec = GETARG_Ax(*iseq);
   ma = MRB_ASPEC_REQ(aspec);
   ra = MRB_ASPEC_REST(aspec);
-- 
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