2 files changed, 7 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index 6a2c7e7ccd..74718fc19e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Aug 19 18:23:40 2008  Tanaka Akira  <akr@fsij.org>
+
+	* io.c (rb_io_flags_mode): add a prefix 0 to octal in error message.
+	  (rb_io_modenum_mode): ditto.
+
 Tue Aug 19 18:05:45 2008  Tanaka Akira  <akr@fsij.org>
 
 	* include/ruby/io.h (FMODE_*): sorted and describe the values in
diff --git a/io.c b/io.c
index 30e407f5d8..a9229cf2f5 100644
--- a/io.c
+++ b/io.c
@@ -3539,7 +3539,7 @@ rb_io_flags_mode(int flags)
 	}
 	return MODE_BINMODE("r+", "rb+");
     }
-    rb_raise(rb_eArgError, "invalid access modenum %o", flags);
+    rb_raise(rb_eArgError, "invalid access modenum 0%o", flags);
     return NULL;		/* not reached */
 }
 
@@ -3679,7 +3679,7 @@ rb_io_modenum_mode(int flags)
       case O_RDWR:
 	return MODE_BINARY("r+", "rb+");
     }
-    rb_raise(rb_eArgError, "invalid access modenum %o", flags);
+    rb_raise(rb_eArgError, "invalid access modenum 0%o", flags);
     return NULL;		/* not reached */
 }