gentoo-overlay/dev-games/ogre/files/ogre-2.1-fix_warnings.patch

--- a/Samples/2.0/Tutorials/Tutorial_Terrain/src/Terra/TerrainCell.cpp	2020-04-28 18:10:40.416995414 +0200
+++ b/Samples/2.0/Tutorials/Tutorial_Terrain/src/Terra/TerrainCell.cpp	2020-04-28 18:30:46.074920186 +0200
@@ -133,7 +133,11 @@
         gpuPtr[0] = m_verticesPerLine;
         gpuPtr[1] = m_lodLevel;
         gpuPtr[2] = vao->getPrimitiveCount() / m_verticesPerLine - 2u;
-        gpuPtr[3] = *reinterpret_cast<uint32*>( &m_parentTerra->m_skirtSize );
+	/* Triggers: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
+         * gpuPtr[3] = *reinterpret_cast<uint32*>( &m_parentTerra->m_skirtSize );
+	 * See: http://zaynar.co.uk/docs/float-aliasing.html
+	 */
+	memcpy(&gpuPtr[3], &m_parentTerra->m_skirtSize, sizeof(gpuPtr[3]));
 
         //ivec4 xzTexPosBounds
         ((int32*RESTRICT_ALIAS)gpuPtr)[4] = m_gridX;