diff --git a/.gdbinit b/.gdbinit
index 728e73976db447..779d3085c2d5b6 100644
--- a/.gdbinit
+++ b/.gdbinit
@@ -1,6 +1,6 @@
 define rp
   if (VALUE)$arg0 & RUBY_FIXNUM_FLAG
-    printf "FIXNUM: %ld\n", $arg0 >> 1
+    printf "FIXNUM: %ld\n", (long)$arg0 >> 1
   else
   if ((VALUE)$arg0 & ~(~(VALUE)0<<RUBY_SPECIAL_SHIFT)) == RUBY_SYMBOL_FLAG
     printf "SYMBOL(%ld)\n", $arg0 >> RUBY_SPECIAL_SHIFT
diff --git a/ChangeLog b/ChangeLog
index 5697dba263cd75..230f268c0e6c94 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Mar 30 19:04:25 2009  Tanaka Akira  <akr@fsij.org>
+
+	* .gdbinit (rp): show negative fixnum correctly.
+
 Mon Mar 30 12:12:46 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_eval.c (eval_string_with_cref): replaces the message if