From 6ba2c24cc4f04311e48a35e5c43847205f511acc Mon Sep 17 00:00:00 2001
From: naruse <naruse@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Mon, 31 Mar 2014 22:34:41 +0000
Subject: [PATCH] * vm_dump.c (rb_print_backtrace): current implementation  
 uses dladdr to get the path of objects.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45489 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 5 +++++
 vm_dump.c | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 6e4c47054f..c911571456 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Apr  1 07:27:15 2014  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* vm_dump.c (rb_print_backtrace): current implementation
+	  uses dladdr to get the path of objects.
+
 Mon Mar 31 23:57:45 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/readline/extconf.rb: fix typo, `$defs` not `$DEFS`.
diff --git a/vm_dump.c b/vm_dump.c
index 23f0e571cf..92e701c098 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -683,7 +683,7 @@ rb_print_backtrace(void)
 #define MAX_NATIVE_TRACE 1024
     static void *trace[MAX_NATIVE_TRACE];
     int n = backtrace(trace, MAX_NATIVE_TRACE);
-#ifdef USE_ELF
+#if defined(USE_ELF) && defined(HAVE_DLADDR)
     rb_dump_backtrace_with_lines(n, trace);
 #else
     char **syms = backtrace_symbols(trace, n);