diff --git a/ChangeLog b/ChangeLog
index fbce97f1f4..67f928edb8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+Mon Mar 24 13:13:36 2014  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* addr2line.c (parse_debug_line_cu): explicitly specify signed char
+	  because DWARF's line_Base is signed char and char maybe unsigned.
+	  patched by Rei Odaira. [ruby-dev:48068] [Bug #9654]
+
 Sun Mar 23 11:03:50 2014  Kohei Suzuki  <eagletmt@gmail.com>
 
 	* vm_method.c (rb_method_entry_get_without_cache): me->klass is 0
diff --git a/addr2line.c b/addr2line.c
index cee2640e1e..1dabfac785 100644
--- a/addr2line.c
+++ b/addr2line.c
@@ -294,7 +294,7 @@ parse_debug_line_cu(int num_traces, void **traces,
     is_stmt = default_is_stmt = *(unsigned char *)p;
     p++;
 
-    line_base = *(char *)p;
+    line_base = *(signed char *)p;
     p++;
 
     line_range = *(unsigned char *)p;