From e8102aea13f510daa114eadee754803c380736a9 Mon Sep 17 00:00:00 2001
From: Jacques Lucke <jacques@blender.org>
Date: Thu, 28 Apr 2022 12:21:39 +0200
Subject: [PATCH] Cleanup: fix warning due to unused variable

This warning exists in gcc 9.4.0, apparently because the variable
is not used in some `constexpr` code paths.
---
 source/blender/blenlib/BLI_devirtualize_parameters.hh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/source/blender/blenlib/BLI_devirtualize_parameters.hh b/source/blender/blenlib/BLI_devirtualize_parameters.hh
index 07458906756..77b6223f310 100644
--- a/source/blender/blenlib/BLI_devirtualize_parameters.hh
+++ b/source/blender/blenlib/BLI_devirtualize_parameters.hh
@@ -154,7 +154,8 @@ template<typename Fn, typename... SourceTypes> class Devirtualizer {
       /* Non-devirtualized parameter type. */
       using SourceType = type_at_index<I>;
       /* A bit flag indicating what devirtualizations are allowed in this step. */
-      constexpr DeviMode allowed_modes = DeviModeSequence<AllowedModes...>::template at_index<I>();
+      [[maybe_unused]] constexpr DeviMode allowed_modes =
+          DeviModeSequence<AllowedModes...>::template at_index<I>();
 
       /* Handle #VArray types. */
       if constexpr (is_VArray_v<SourceType>) {