From 37758a01761331f534768a95f1948637cb7149c6 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 20 Apr 2021 10:40:37 +0200
Subject: Optimize getenv() for const char* name

---
 libbutl/utility.mxx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'libbutl/utility.mxx')

diff --git a/libbutl/utility.mxx b/libbutl/utility.mxx
index 6965be4..bd24ffd 100644
--- a/libbutl/utility.mxx
+++ b/libbutl/utility.mxx
@@ -322,7 +322,13 @@ LIBBUTL_MODEXPORT namespace butl
   // overrides (thread_env).
   //
   LIBBUTL_SYMEXPORT optional<std::string>
-  getenv (const std::string&);
+  getenv (const char*);
+
+  inline optional<std::string>
+  getenv (const std::string& n)
+  {
+    return getenv (n.c_str ());
+  }
 
   // Set the process environment variable. Best done before starting any
   // threads (see thread_env). Throw system_error on failure.
-- 
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