From 092af3c82692cb346dfac0dcb1bafe46703682ca Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 5 Dec 2019 18:23:32 +0100
Subject: [PATCH] Eliminate more pass-by-value in variadic calls

---
 src/libutil/types.hh | 6 +++---
 src/libutil/util.hh  | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/libutil/types.hh b/src/libutil/types.hh
index 5d3e76421..20b96a85c 100644
--- a/src/libutil/types.hh
+++ b/src/libutil/types.hh
@@ -97,14 +97,14 @@ public:
     unsigned int status = 1; // exit status
 
     template<typename... Args>
-    BaseError(unsigned int status, Args... args)
+    BaseError(unsigned int status, const Args & ... args)
         : err(fmt(args...))
         , status(status)
     {
     }
 
     template<typename... Args>
-    BaseError(Args... args)
+    BaseError(const Args & ... args)
         : err(fmt(args...))
     {
     }
@@ -136,7 +136,7 @@ public:
     int errNo;
 
     template<typename... Args>
-    SysError(Args... args)
+    SysError(const Args & ... args)
         : Error(addErrno(fmt(args...)))
     { }
 
diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index b9f9ea882..a1acb49b5 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -299,7 +299,7 @@ public:
     int status;
 
     template<typename... Args>
-    ExecError(int status, Args... args)
+    ExecError(int status, const Args & ... args)
         : Error(args...), status(status)
     { }
 };