From a4868565bf73013a8cf659114ae053f3c2b5a56f Mon Sep 17 00:00:00 2001
From: AdmiralPellaeon <ld.pellaeon@gmail.com>
Date: Fri, 5 Jan 2024 20:03:24 +0100
Subject: [PATCH] GLSupport: const correct GLSLPreprocessor

missing 'const' lead to error in C++20
---
 RenderSystems/GLSupport/include/GLSL/OgreGLSLPreprocessor.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/RenderSystems/GLSupport/include/GLSL/OgreGLSLPreprocessor.h b/RenderSystems/GLSupport/include/GLSL/OgreGLSLPreprocessor.h
index d87a01b7ccc..eb43074219c 100644
--- a/RenderSystems/GLSupport/include/GLSL/OgreGLSLPreprocessor.h
+++ b/RenderSystems/GLSupport/include/GLSL/OgreGLSLPreprocessor.h
@@ -161,7 +161,7 @@ namespace Ogre {
             void SetValue (long iValue);
 
             /// Test two tokens for equality
-            bool operator == (const Token &iOther)
+            bool operator == (const Token &iOther) const
             {
                 if (iOther.Length != Length)
                     return false;