From 8272cd9deca99b84fe18cddd561f24bb69249b57 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Mon, 12 Dec 2022 12:36:19 +0100
Subject: [PATCH] Optimize string concatenation
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Co-authored-by: Théophane Hufschmitt <7226587+thufschmitt@users.noreply.github.com>
---
 src/libutil/util.hh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libutil/util.hh b/src/libutil/util.hh
index 3caa95fca..2f869d909 100644
--- a/src/libutil/util.hh
+++ b/src/libutil/util.hh
@@ -756,7 +756,9 @@ inline std::string operator + (std::string && s, std::string_view s2)
 
 inline std::string operator + (std::string_view s1, const char * s2)
 {
-    std::string s(s1);
+    std::string s;
+    s.reserve(s1.size() + strlen(s2));
+    s.append(s1);
     s.append(s2);
     return s;
 }