From 1bfede120aae0334a28ead8fa2733b8add7cb01d Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Wed, 4 Sep 2019 12:01:25 +0200
Subject: [PATCH] fs/Traits: call std::string::reserve() in BuildPathImpl()

---
 src/fs/Traits.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/fs/Traits.cxx b/src/fs/Traits.cxx
index ec44e408f..0e4a6c3c3 100644
--- a/src/fs/Traits.cxx
+++ b/src/fs/Traits.cxx
@@ -35,7 +35,10 @@ BuildPathImpl(typename Traits::const_pointer_type a, size_t a_size,
 	if (b_size == 0)
 		return typename Traits::string(a, a_size);
 
-	typename Traits::string result(a, a_size);
+	typename Traits::string result;
+	result.reserve(a_size + 1 + b_size);
+
+	result.append(a, a_size);
 
 	if (!Traits::IsSeparator(a[a_size - 1]))
 		result.push_back(Traits::SEPARATOR);