From b0524a0b18eec9d5e5c3f6ce30b6cecdd02a6306 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 20 Jan 2015 17:18:09 +0200
Subject: Diagnostic infrastructure revamp

---
 build/timestamp.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'build/timestamp.cxx')

diff --git a/build/timestamp.cxx b/build/timestamp.cxx
index 0ad3f3f..0d450ea 100644
--- a/build/timestamp.cxx
+++ b/build/timestamp.cxx
@@ -58,7 +58,7 @@ namespace build
   }
 
   ostream&
-  operator<< (ostream& os, timestamp ts)
+  operator<< (ostream& os, const timestamp& ts)
   {
     // @@ replace with put_time()
     //
@@ -97,7 +97,7 @@ namespace build
   }
 
   ostream&
-  operator<< (ostream& os, duration d)
+  operator<< (ostream& os, const duration& d)
   {
     // @@ replace with put_time()
     //
-- 
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