From 2eeaab4e81ea475d80af9d49cf333bb416fd666f Mon Sep 17 00:00:00 2001
From: Yukihiro Matsumoto <matz@ruby-lang.org>
Date: Thu, 14 Jun 2012 04:44:02 +0900
Subject: do not offset jump from OP_ENTER if no optional argument given

---
 src/vm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/vm.c b/src/vm.c
index e229a4a54..951c63b21 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -971,7 +971,9 @@ mrb_run(mrb_state *mrb, struct RProc *proc, mrb_value self)
         if (r) {                  /* r */
           regs[m1+o+1] = mrb_ary_new_capa(mrb, 0);
         }
-        pc += argc - m1 - m2 + 1;
+	if (o == 0) pc++;
+	else
+	  pc += argc - m1 - m2 + 1;
       }
       else {
         memmove(&regs[1], argv, sizeof(mrb_value)*(m1+o)); /* m1 + o */
-- 
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