From 10103e8cc7ce82027b5e96b7a5793ed4c27567b9 Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 18 Feb 2013 21:46:00 +0000
Subject: [PATCH] Correct condition of r39302

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39304 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_dump.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/vm_dump.c b/vm_dump.c
index f7423031cf..54bc286985 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -424,18 +424,18 @@ rb_vmdebug_thread_dump_state(VALUE self)
     return Qnil;
 }
 
-#ifndef HAVE_BACKTRACE
-#define HAVE_BACKTRACE 0
-#endif
-#ifdef BROKEN_BACKTRACE
-# undef HAVE_BACKTRACE
+#if defined(HAVE_BACKTRACE)
+# if HAVE_LIBUNWIND
+#  undef backtrace
+#  define backtrace unw_backtrace
+# elif defined(BROKEN_BACKTRACE)
+#  undef HAVE_BACKTRACE
+#  define HAVE_BACKTRACE 0
+# endif
+#else
 # define HAVE_BACKTRACE 0
 #endif
-#if HAVE_LIBUNWIND
-# define HAVE_BACKTRACE 1
-# undef backtrace
-# define backtrace unw_backtrace
-#endif
+
 #if HAVE_BACKTRACE
 # include <execinfo.h>
 #elif defined(_WIN32)