From 075aa3eeaa9ee798ebcd8781f04a18fbbab7b2fd Mon Sep 17 00:00:00 2001
From: Tomoyuki Sahara <tsahara@iij.ad.jp>
Date: Thu, 1 Nov 2012 09:40:56 +0900
Subject: don't print garbage entries.

---
 src/vm.c            | 3 +++
 tools/mruby/mruby.c | 4 ++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/vm.c b/src/vm.c
index 953863a0b..fe359be47 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -169,6 +169,9 @@ cipush(mrb_state *mrb)
   mrb->ci->eidx = eidx;
   mrb->ci->ridx = ridx;
   mrb->ci->env = 0;
+  if (mrb->ci + 1 != mrb->ciend) {
+    mrb->ci[1].mid = 0;
+  }
   return mrb->ci;
 }
 
diff --git a/tools/mruby/mruby.c b/tools/mruby/mruby.c
index 94fddf4c7..2037ee2a8 100644
--- a/tools/mruby/mruby.c
+++ b/tools/mruby/mruby.c
@@ -170,9 +170,9 @@ showcallinfo(mrb_state *mrb)
   int i;
 
   printf("trace:\n");
-  for (i = 0; &mrb->cibase[i] < mrb->ciend; i++) {
+  for (i = 1; &mrb->cibase[i] < mrb->ciend; i++) {
     ci = &mrb->cibase[i];
-    if (ci->target_class == NULL)
+    if (ci->mid == 0)
       break;
 
     if (MRB_PROC_CFUNC_P(ci->proc))
-- 
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