From b8bddc438c3544692f2015b82499b7508ff32d3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Thu, 16 Jul 2026 01:15:01 +0200
Subject: [PATCH] Suppress pointless Clang 23 unused template warnings.

Similar to what I did in Corrade.
---
 doc/snippets/SceneGraph.cpp      |  9 +++++++++
 src/Magnum/Math/FunctionsBatch.h | 12 ++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/doc/snippets/SceneGraph.cpp b/doc/snippets/SceneGraph.cpp
index a0ce1a1cb..42a81ea09 100644
--- a/doc/snippets/SceneGraph.cpp
+++ b/doc/snippets/SceneGraph.cpp
@@ -146,6 +146,12 @@ class CachingObject: public Object3D, SceneGraph::AbstractFeature3D {
 
 namespace {
 
+/* Clang 23 adds -Wunused-template to -Wall and then warns about the unused
+   constructor. Well, this is a doc snippet, so what am I supposed to do? */
+#ifdef CORRADE_TARGET_CLANG
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-template"
+#endif
 /* [transformation] */
 class TransformingFeature: public SceneGraph::AbstractFeature3D {
     public:
@@ -161,6 +167,9 @@ class TransformingFeature: public SceneGraph::AbstractFeature3D {
         SceneGraph::AbstractTranslationRotation3D& _transformation;
 };
 /* [transformation] */
+#ifdef CORRADE_TARGET_CLANG
+#pragma clang diagnostic pop
+#endif
 
 }
 
diff --git a/src/Magnum/Math/FunctionsBatch.h b/src/Magnum/Math/FunctionsBatch.h
index e3a6ec1b7..83bcd3abd 100644
--- a/src/Magnum/Math/FunctionsBatch.h
+++ b/src/Magnum/Math/FunctionsBatch.h
@@ -49,9 +49,21 @@ namespace Implementation {
 
 /** @todo Utility/Algorithms.h has a similar (but different) variant of this,
     maybe turn that into some public utility once we have one more use case? */
+/* Clang since version 23 includes -Wunused-template in -Wall, and warns for
+   those declarations. The templates are used inside a decltype() expression
+   below (and commenting them out obviously makes the test fail to compile) so
+   this is yet another completely pointless warning that just wastes my
+   time. */
+#ifdef CORRADE_TARGET_CLANG
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-template"
+#endif
 template<class T, class View = decltype(Containers::Implementation::ErasedArrayViewConverter<typename std::remove_reference<T&&>::type>::from(std::declval<T&&>()))> static auto stridedArrayViewTypeFor(T&&) -> typename std::remove_const<typename View::Type>::type;
 template<class T> static typename std::remove_const<T>::type stridedArrayViewTypeFor(const Containers::ArrayView<T>&);
 template<class T> static typename std::remove_const<T>::type stridedArrayViewTypeFor(const Containers::StridedArrayView1D<T>&);
+#ifdef CORRADE_TARGET_CLANG
+#pragma clang diagnostic pop
+#endif
 
 }