GLM requires anynimous struct for SIMD optimizations and swizzle support #524

glm/detail/type_vec1.hpp

@@ -27,7 +27,7 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_UNRESTRICTED_UNIONS
+#		if GLM_HAS_UNRESTRICTED_UNIONS && (defined(GLM_SWIZZLE) || (GLM_ARCH & (GLM_ARCH_SSE2_BIT | GLM_ARCH_NEON_BIT)))
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"

glm/detail/type_vec2.hpp

@@ -26,7 +26,7 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_UNRESTRICTED_UNIONS
+#		if GLM_HAS_UNRESTRICTED_UNIONS && (defined(GLM_SWIZZLE) || (GLM_ARCH & (GLM_ARCH_SSE2_BIT | GLM_ARCH_NEON_BIT)))
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"

glm/detail/type_vec3.hpp

@@ -26,7 +26,7 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_UNRESTRICTED_UNIONS
+#		if GLM_HAS_UNRESTRICTED_UNIONS && (defined(GLM_SWIZZLE) || (GLM_ARCH & (GLM_ARCH_SSE2_BIT | GLM_ARCH_NEON_BIT)))
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"

glm/detail/type_vec4.hpp

@@ -27,7 +27,7 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_UNRESTRICTED_UNIONS
+#		if GLM_HAS_UNRESTRICTED_UNIONS && (defined(GLM_SWIZZLE) || (GLM_ARCH & (GLM_ARCH_SSE2_BIT | GLM_ARCH_NEON_BIT)))
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"

glm/gtc/quaternion.hpp

@@ -40,12 +40,29 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_UNRESTRICTED_UNIONS
+#		if GLM_HAS_UNRESTRICTED_UNIONS && (defined(GLM_SWIZZLE) || (GLM_ARCH & (GLM_ARCH_SSE2_BIT | GLM_ARCH_NEON_BIT)))
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic push
+#				pragma GCC diagnostic ignored "-Wpedantic"
+#			endif
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic push
+#				pragma clang diagnostic ignored "-Wgnu-anonymous-struct"
+#				pragma clang diagnostic ignored "-Wnested-anon-types"
+#			endif
+		
 			union
 			{
 				struct { T x, y, z, w;};
 				typename detail::storage<T, sizeof(T) * 4, detail::is_aligned<P>::value>::type data;
 			};
+		
+#			if GLM_COMPILER & GLM_COMPILER_CLANG
+#				pragma clang diagnostic pop
+#			endif
+#			if GLM_COMPILER & GLM_COMPILER_GCC
+#				pragma GCC diagnostic pop
+#			endif
 #		else
 			T x, y, z, w;
 #		endif