From 5f6990d74695bf5452d9d5870cf5760628497114 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Ho=C5=99e=C5=88ovsk=C3=BD?=
 <martin.horenovsky@gmail.com>
Date: Sun, 26 Jul 2020 21:33:49 +0200
Subject: [PATCH] Only start Section's timer if the duration will be used

This is a small potential runtime optimization on systems with
virtual syscalls, and a significant runtime optimization on systems
without.
---
 src/catch2/internal/catch_section.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/catch2/internal/catch_section.cpp b/src/catch2/internal/catch_section.cpp
index 3652daf0..52361584 100644
--- a/src/catch2/internal/catch_section.cpp
+++ b/src/catch2/internal/catch_section.cpp
@@ -16,7 +16,11 @@ namespace Catch {
     :   m_info( info ),
         m_sectionIncluded( getResultCapture().sectionStarted( m_info, m_assertions ) )
     {
-        m_timer.start();
+        // Non-"included" sections will not use the timing information
+        // anyway, so don't bother with the potential syscall.
+        if (m_sectionIncluded) {
+            m_timer.start();
+        }
     }
 
     Section::~Section() {