From c9f2d74b5bcf46e9fccc4cd451cd129e3b2462fe Mon Sep 17 00:00:00 2001
From: Volker Krause <vkrause@kde.org>
Date: Wed, 10 Aug 2016 09:05:01 +0200
Subject: [PATCH] Tag::compare arguments should be const references

Besides being more correct, this fixes compilation errors with GCC 4.8
in KMail.
---
 src/tag/tag.cpp | 4 ++--
 src/tag/tag.h   | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/tag/tag.cpp b/src/tag/tag.cpp
index 42f0199..f75c936 100644
--- a/src/tag/tag.cpp
+++ b/src/tag/tag.cpp
@@ -111,7 +111,7 @@ Akonadi::Tag Tag::saveToAkonadi(Tag::SaveFlags saveFlags) const
     return tag;
 }
 
-bool Tag::compare(Tag::Ptr &tag1, Tag::Ptr &tag2)
+bool Tag::compare(const Tag::Ptr &tag1, const Tag::Ptr &tag2)
 {
     if (tag1->priority < tag2->priority) {
         return true;
@@ -122,7 +122,7 @@ bool Tag::compare(Tag::Ptr &tag1, Tag::Ptr &tag2)
     }
 }
 
-bool Tag::compareName(Tag::Ptr &tag1, Tag::Ptr &tag2)
+bool Tag::compareName(const Tag::Ptr &tag1, const Tag::Ptr &tag2)
 {
     return (tag1->tagName < tag2->tagName);
 }
diff --git a/src/tag/tag.h b/src/tag/tag.h
index 24a2370..3166eb1 100644
--- a/src/tag/tag.h
+++ b/src/tag/tag.h
@@ -59,9 +59,9 @@ public:
     Akonadi::Tag saveToAkonadi(SaveFlags saveFlags = SaveFlags(TextColor | BackgroundColor | Font)) const;
 
     // Compare, based on priority
-    static bool compare(Ptr &tag1, Ptr &tag2);
+    static bool compare(const Ptr &tag1, const Ptr &tag2);
     // Compare, based on name
-    static bool compareName(Ptr &tag1, Ptr &tag2);
+    static bool compareName(const Ptr &tag1, const Ptr &tag2);
 
     qint64 id() const;
     QString name() const;