From a7ad82c935deb37e95c54c6fdd98fb34b23f273d Mon Sep 17 00:00:00 2001
From: Ichthyostega <prg@ichthyostega.de>
Date: Mon, 7 Aug 2017 00:20:55 +0200
Subject: [PATCH] Library: can optimise IterStack pop()

...by moving out the element to be extracted;
because of RVO it will in fact be move constructed into
the storage of the caller
---
 src/lib/iter-stack.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/iter-stack.hpp b/src/lib/iter-stack.hpp
index 16b9511f5..dec50b321 100644
--- a/src/lib/iter-stack.hpp
+++ b/src/lib/iter-stack.hpp
@@ -150,7 +150,7 @@ namespace lib {
       pop()
         {
           this->__throw_if_empty();
-          TY topElement (this->stateCore().back());
+          TY topElement (std::move (this->stateCore().back()));
           this->stateCore().pop_back();
           return topElement;
         }
@@ -218,7 +218,7 @@ namespace lib {
       pop()
         {
           this->__throw_if_empty();
-          TY firstElement (this->stateCore().back());
+          TY firstElement (std::move (this->stateCore().back()));
           this->stateCore().pop_back();
           return firstElement;
         }