diff --git a/glm/detail/setup.hpp b/glm/detail/setup.hpp
index 31b1b35b..2b835fe3 100644
--- a/glm/detail/setup.hpp
+++ b/glm/detail/setup.hpp
@@ -445,6 +445,11 @@
 		((GLM_COMPILER & GLM_COMPILER_CUDA) && (GLM_COMPILER >= GLM_COMPILER_CUDA70))))
 #endif
 
+#define GLM_HAS_ONLY_XYZW ((GLM_COMPILER & GLM_COMPILER_GCC) && (GLM_COMPILER < GLM_COMPILER_GCC46))
+#if GLM_HAS_ONLY_XYZW
+#	pragma message("GLM: GCC older than 4.6 has a bug presenting the use of rgba and stpq components")
+#endif
+
 //
 #if GLM_LANG & GLM_LANG_CXX11_FLAG
 #	define GLM_HAS_ASSIGNABLE 1
@@ -713,17 +718,21 @@
 #	define GLM_DEFAULT_CTOR
 #endif
 
-#if GLM_HAS_CONSTEXPR
+#if GLM_HAS_CONSTEXPR || GLM_HAS_CONSTEXPR_PARTIAL
 #	define GLM_CONSTEXPR constexpr
-#	define GLM_CONSTEXPR_CTOR constexpr
-#	define GLM_RELAXED_CONSTEXPR constexpr
-#elif GLM_HAS_CONSTEXPR_PARTIAL
-#	define GLM_CONSTEXPR constexpr
-#	define GLM_CONSTEXPR_CTOR
-#	define GLM_RELAXED_CONSTEXPR const
+#	if GLM_COMPILER & GLM_COMPILER_VC // Visual C++ has a bug #594 https://github.com/g-truc/glm/issues/594
+#		define GLM_CONSTEXPR_CTOR
+#	else
+#		define GLM_CONSTEXPR_CTOR constexpr
+#	endif
 #else
 #	define GLM_CONSTEXPR
 #	define GLM_CONSTEXPR_CTOR
+#endif
+
+#if GLM_HAS_CONSTEXPR
+#	define GLM_RELAXED_CONSTEXPR constexpr
+#else
 #	define GLM_RELAXED_CONSTEXPR const
 #endif
 
diff --git a/glm/detail/type_vec1.hpp b/glm/detail/type_vec1.hpp
index 1b7bfabe..8f877eda 100644
--- a/glm/detail/type_vec1.hpp
+++ b/glm/detail/type_vec1.hpp
@@ -27,7 +27,10 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_ALIGNED_TYPE
+#		if GLM_HAS_ONLY_XYZW
+			T x;
+
+#		elif GLM_HAS_ALIGNED_TYPE
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"
@@ -82,31 +85,31 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR vec() GLM_DEFAULT_CTOR;
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec const& v) GLM_DEFAULT;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const& v) GLM_DEFAULT;
 		template<precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, T, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, T, Q> const& v);
 
 		// -- Explicit basic constructors --
 
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(ctor);
-		GLM_FUNC_DECL GLM_CONSTEXPR explicit vec(T scalar);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(T scalar);
 
 		// -- Conversion vector constructors --
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<2, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<2, U, Q> const& v);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<1, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<1, U, Q> const& v);
 
 		// -- Swizzle constructors --
 /*
diff --git a/glm/detail/type_vec1.inl b/glm/detail/type_vec1.inl
index 26a45856..e3f56b25 100644
--- a/glm/detail/type_vec1.inl
+++ b/glm/detail/type_vec1.inl
@@ -7,7 +7,7 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec()
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec()
 #			ifndef GLM_FORCE_NO_CTOR_INIT
 				: x(0)
 #			endif
@@ -16,14 +16,14 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<1, T, P> const & v)
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<1, T, P> const & v)
 			: x(v.x)
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 
 	template<typename T, precision P>
 	template<precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<1, T, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<1, T, Q> const& v)
 		: x(v.x)
 	{}
 
@@ -34,7 +34,7 @@ namespace glm
 	{}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(T scalar)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(T scalar)
 		: x(scalar)
 	{}
 
@@ -42,25 +42,25 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<1, U, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<1, U, Q> const & v)
 		: x(static_cast<T>(v.x))
 	{}
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<2, U, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<2, U, Q> const & v)
 		: x(static_cast<T>(v.x))
 	{}
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<3, U, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<3, U, Q> const & v)
 		: x(static_cast<T>(v.x))
 	{}
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<1, T, P>::vec(vec<4, U, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<1, T, P>::vec(vec<4, U, Q> const & v)
 		: x(static_cast<T>(v.x))
 	{}
 
diff --git a/glm/detail/type_vec2.hpp b/glm/detail/type_vec2.hpp
index b0588703..1eb81c92 100644
--- a/glm/detail/type_vec2.hpp
+++ b/glm/detail/type_vec2.hpp
@@ -26,7 +26,10 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_ALIGNED_TYPE
+#		if GLM_HAS_ONLY_XYZW
+			T x, y;
+
+#		elif GLM_HAS_ALIGNED_TYPE
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"
@@ -78,42 +81,42 @@ namespace glm
 		typedef length_t length_type;
 		GLM_FUNC_DECL static length_type length(){return 2;}
 
-		GLM_FUNC_DECL T & operator[](length_type i);
-		GLM_FUNC_DECL T const & operator[](length_type i) const;
+		GLM_FUNC_DECL T& operator[](length_type i);
+		GLM_FUNC_DECL T const& operator[](length_type i) const;
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR vec() GLM_DEFAULT_CTOR;
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec const& v) GLM_DEFAULT;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const& v) GLM_DEFAULT;
 		template<precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, T, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, T, Q> const& v);
 
 		// -- Explicit basic constructors --
 
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(ctor);
-		GLM_FUNC_DECL GLM_CONSTEXPR explicit vec(T scalar);
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(T x, T y);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(T scalar);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(T x, T y);
 
 		// -- Conversion constructors --
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(A x, B y);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(A x, B y);
 		template<typename A, typename B>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, A, P> const& x, vec<1, B, P> const& y);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, A, P> const& x, vec<1, B, P> const& y);
 
 		// -- Conversion vector constructors --
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<2, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<2, U, Q> const& v);
 
 		// -- Swizzle constructors --
 #		if GLM_HAS_UNRESTRICTED_UNIONS && (GLM_SWIZZLE == GLM_SWIZZLE_ENABLED)
diff --git a/glm/detail/type_vec2.inl b/glm/detail/type_vec2.inl
index 46ffd34c..fa6c2902 100644
--- a/glm/detail/type_vec2.inl
+++ b/glm/detail/type_vec2.inl
@@ -7,7 +7,7 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec()
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec()
 #			ifndef GLM_FORCE_NO_CTOR_INIT
 				: x(0), y(0)
 #			endif
@@ -16,14 +16,14 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<2, T, P> const& v)
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<2, T, P> const& v)
 			: x(v.x), y(v.y)
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 
 	template<typename T, precision P>
 	template<precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<2, T, Q> const& v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<2, T, Q> const& v)
 		: x(v.x), y(v.y)
 	{}
 
@@ -34,12 +34,12 @@ namespace glm
 	{}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(T scalar)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(T scalar)
 		: x(scalar), y(scalar)
 	{}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(T _x, T _y)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(T _x, T _y)
 		: x(_x), y(_y)
 	{}
 
@@ -47,14 +47,14 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename A, typename B>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(A _x, B _y)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(A _x, B _y)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_y))
 	{}
 
 	template<typename T, precision P>
 	template<typename A, typename B>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<1, A, P> const& _x, vec<1, B, P> const& _y)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<1, A, P> const& _x, vec<1, B, P> const& _y)
 		: x(static_cast<T>(_x.x))
 		, y(static_cast<T>(_y.x))
 	{}
@@ -63,21 +63,21 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<2, U, Q> const& v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<2, U, Q> const& v)
 		: x(static_cast<T>(v.x))
 		, y(static_cast<T>(v.y))
 	{}
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<3, U, Q> const& v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<3, U, Q> const& v)
 		: x(static_cast<T>(v.x))
 		, y(static_cast<T>(v.y))
 	{}
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<2, T, P>::vec(vec<4, U, Q> const& v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<2, T, P>::vec(vec<4, U, Q> const& v)
 		: x(static_cast<T>(v.x))
 		, y(static_cast<T>(v.y))
 	{}
diff --git a/glm/detail/type_vec3.hpp b/glm/detail/type_vec3.hpp
index 8e742a22..bd95530a 100644
--- a/glm/detail/type_vec3.hpp
+++ b/glm/detail/type_vec3.hpp
@@ -26,7 +26,10 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_ALIGNED_TYPE
+#		if GLM_HAS_ONLY_XYZW
+			T x, y, z;
+
+#		elif GLM_HAS_ALIGNED_TYPE
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"
@@ -83,46 +86,46 @@ namespace glm
 
 		// -- Implicit basic constructors --
 
-		GLM_FUNC_DECL GLM_CONSTEXPR vec() GLM_DEFAULT_CTOR;
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec const & v) GLM_DEFAULT;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec() GLM_DEFAULT_CTOR;
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec const & v) GLM_DEFAULT;
 		template<precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<3, T, Q> const & v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<3, T, Q> const & v);
 
 		// -- Explicit basic constructors --
 
 		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(ctor);
-		GLM_FUNC_DECL GLM_CONSTEXPR explicit vec(T scalar);
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(T a, T b, T c);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR explicit vec(T scalar);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(T a, T b, T c);
 
 		// -- Conversion scalar constructors --
 
 		/// Explicit converions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename X, typename Y, typename Z>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(X x, Y y, Z z);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(X x, Y y, Z z);
 		template<typename X, typename Y, typename Z>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, X, P> const& _x, vec<1, Y, P> const& _y, vec<1, Z, P> const& _z);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, X, P> const& _x, vec<1, Y, P> const& _y, vec<1, Z, P> const& _z);
 
 		// -- Conversion vector constructors --
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, A, Q> const& _xy, B _z);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, A, Q> const& _xy, B _z);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(A _x, vec<2, B, Q> const& _yz);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(A _x, vec<2, B, Q> const& _yz);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<3, U, Q> const& v);
 
 		// -- Swizzle constructors --
 #		if GLM_HAS_UNRESTRICTED_UNIONS && (GLM_SWIZZLE == GLM_SWIZZLE_ENABLED)
diff --git a/glm/detail/type_vec3.inl b/glm/detail/type_vec3.inl
index aadfeabf..e5524ab3 100644
--- a/glm/detail/type_vec3.inl
+++ b/glm/detail/type_vec3.inl
@@ -7,7 +7,7 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS || !defined(GLM_FORCE_NO_CTOR_INIT)
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec()
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec()
 #			ifndef GLM_FORCE_NO_CTOR_INIT 
 				: x(0), y(0), z(0)
 #			endif
@@ -16,14 +16,14 @@ namespace glm
 
 #	if !GLM_HAS_DEFAULTED_FUNCTIONS
 		template<typename T, precision P>
-		GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<3, T, P> const & v)
+		GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<3, T, P> const & v)
 			: x(v.x), y(v.y), z(v.z)
 		{}
 #	endif//!GLM_HAS_DEFAULTED_FUNCTIONS
 
 	template<typename T, precision P>
 	template<precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<3, T, Q> const & v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<3, T, Q> const & v)
 		: x(v.x), y(v.y), z(v.z)
 	{}
 
@@ -34,12 +34,12 @@ namespace glm
 	{}
 
 	template<typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(T scalar)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(T scalar)
 		: x(scalar), y(scalar), z(scalar)
 	{}
 
 	template <typename T, precision P>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(T _x, T _y, T _z)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(T _x, T _y, T _z)
 		: x(_x), y(_y), z(_z)
 	{}
 
@@ -47,7 +47,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename X, typename Y, typename Z>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(X _x, Y _y, Z _z)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(X _x, Y _y, Z _z)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_y))
 		, z(static_cast<T>(_z))
@@ -55,7 +55,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename X, typename Y, typename Z>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<1, X, P> const& _x, vec<1, Y, P> const& _y, vec<1, Z, P> const& _z)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<1, X, P> const& _x, vec<1, Y, P> const& _y, vec<1, Z, P> const& _z)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_y))
 		, z(static_cast<T>(_z))
@@ -65,7 +65,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<2, A, Q> const& _xy, B _z)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<2, A, Q> const& _xy, B _z)
 		: x(static_cast<T>(_xy.x))
 		, y(static_cast<T>(_xy.y))
 		, z(static_cast<T>(_z))
@@ -73,7 +73,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z)
 		: x(static_cast<T>(_xy.x))
 		, y(static_cast<T>(_xy.y))
 		, z(static_cast<T>(_z.x))
@@ -81,7 +81,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(A _x, vec<2, B, Q> const& _yz)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(A _x, vec<2, B, Q> const& _yz)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_yz.x))
 		, z(static_cast<T>(_yz.y))
@@ -89,7 +89,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz)
 		: x(static_cast<T>(_x.x))
 		, y(static_cast<T>(_yz.x))
 		, z(static_cast<T>(_yz.y))
@@ -97,7 +97,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<3, U, Q> const& v)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<3, U, Q> const& v)
 		: x(static_cast<T>(v.x))
 		, y(static_cast<T>(v.y))
 		, z(static_cast<T>(v.z))
@@ -105,7 +105,7 @@ namespace glm
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<3, T, P>::vec(vec<4, U, Q> const& v) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<3, T, P>::vec(vec<4, U, Q> const& v) :
 		x(static_cast<T>(v.x)),
 		y(static_cast<T>(v.y)),
 		z(static_cast<T>(v.z))
diff --git a/glm/detail/type_vec4.hpp b/glm/detail/type_vec4.hpp
index ff1850a0..6ecb1602 100644
--- a/glm/detail/type_vec4.hpp
+++ b/glm/detail/type_vec4.hpp
@@ -26,7 +26,10 @@ namespace glm
 
 		// -- Data --
 
-#		if GLM_HAS_ALIGNED_TYPE
+#		if GLM_HAS_ONLY_XYZW
+			T x, y, z, w;
+
+#		elif GLM_HAS_ALIGNED_TYPE
 #			if GLM_COMPILER & GLM_COMPILER_GCC
 #				pragma GCC diagnostic push
 #				pragma GCC diagnostic ignored "-Wpedantic"
@@ -109,41 +112,41 @@ namespace glm
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, A, Q> const& _xy, B _z, C _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, A, Q> const& _xy, B _z, C _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z, vec<1, C, Q> const& _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z, vec<1, C, Q> const& _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(A _x, vec<2, B, Q> const& _yz, C _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(A _x, vec<2, B, Q> const& _yz, C _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz, vec<1, C, Q> const& _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz, vec<1, C, Q> const& _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(A _x, B _y, vec<2, C, Q> const& _zw);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(A _x, B _y, vec<2, C, Q> const& _zw);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, typename C, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, A, Q> const& _x, vec<1, B, Q> const& _y, vec<2, C, Q> const& _zw);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, A, Q> const& _x, vec<1, B, Q> const& _y, vec<2, C, Q> const& _zw);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<3, A, Q> const& _xyz, B _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<3, A, Q> const& _xyz, B _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<3, A, Q> const& _xyz, vec<1, B, Q> const& _w);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<3, A, Q> const& _xyz, vec<1, B, Q> const& _w);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(A _x, vec<3, B, Q> const& _yzw);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(A _x, vec<3, B, Q> const& _yzw);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<1, A, Q> const& _x, vec<3, B, Q> const& _yzw);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<1, A, Q> const& _x, vec<3, B, Q> const& _yzw);
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename A, typename B, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR vec(vec<2, A, Q> const& _xy, vec<2, B, Q> const& _zw);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR vec(vec<2, A, Q> const& _xy, vec<2, B, Q> const& _zw);
 
 		/// Explicit conversions (From section 5.4.1 Conversion and scalar constructors of GLSL 1.30.08 specification)
 		template<typename U, precision Q>
-		GLM_FUNC_DECL GLM_CONSTEXPR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
+		GLM_FUNC_DECL GLM_CONSTEXPR_CTOR GLM_EXPLICIT vec(vec<4, U, Q> const& v);
 
 		// -- Swizzle constructors --
 #		if GLM_HAS_UNRESTRICTED_UNIONS && (GLM_SWIZZLE == GLM_SWIZZLE_ENABLED)
@@ -192,34 +195,34 @@ namespace glm
 
 		// -- Unary arithmetic operators --
 
-		GLM_FUNC_DECL vec<4, T, P> & operator=(vec<4, T, P> const & v) GLM_DEFAULT;
+		GLM_FUNC_DECL vec<4, T, P>& operator=(vec<4, T, P> const & v) GLM_DEFAULT;
 
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator=(vec<4, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator=(vec<4, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator+=(U scalar);
+		GLM_FUNC_DECL vec<4, T, P>& operator+=(U scalar);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator+=(vec<1, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator+=(vec<1, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator+=(vec<4, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator+=(vec<4, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator-=(U scalar);
+		GLM_FUNC_DECL vec<4, T, P>& operator-=(U scalar);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator-=(vec<1, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator-=(vec<1, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator-=(vec<4, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator-=(vec<4, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator*=(U scalar);
+		GLM_FUNC_DECL vec<4, T, P>& operator*=(U scalar);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator*=(vec<1, U, P> const& v);
+		GLM_FUNC_DECL vec<4, T, P>& operator*=(vec<1, U, P> const& v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator*=(vec<4, U, P> const& v);
+		GLM_FUNC_DECL vec<4, T, P>& operator*=(vec<4, U, P> const& v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator/=(U scalar);
+		GLM_FUNC_DECL vec<4, T, P>& operator/=(U scalar);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator/=(vec<1, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator/=(vec<1, U, P> const & v);
 		template<typename U>
-		GLM_FUNC_DECL vec<4, T, P> & operator/=(vec<4, U, P> const & v);
+		GLM_FUNC_DECL vec<4, T, P>& operator/=(vec<4, U, P> const & v);
 
 		// -- Increment and decrement operators --
 
diff --git a/glm/detail/type_vec4.inl b/glm/detail/type_vec4.inl
index 9aa3558d..e333de19 100644
--- a/glm/detail/type_vec4.inl
+++ b/glm/detail/type_vec4.inl
@@ -216,7 +216,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, B _z, C _w)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, B _z, C _w)
 		: x(static_cast<T>(_xy.x))
 		, y(static_cast<T>(_xy.y))
 		, z(static_cast<T>(_z))
@@ -225,7 +225,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z, vec<1, C, Q> const& _w)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, vec<1, B, Q> const& _z, vec<1, C, Q> const& _w)
 		: x(static_cast<T>(_xy.x))
 		, y(static_cast<T>(_xy.y))
 		, z(static_cast<T>(_z.x))
@@ -234,7 +234,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(A _x, vec<2, B, Q> const& _yz, C _w)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(A _x, vec<2, B, Q> const& _yz, C _w)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_yz.x))
 		, z(static_cast<T>(_yz.y))
@@ -243,7 +243,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz, vec<1, C, Q> const& _w)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<2, B, Q> const& _yz, vec<1, C, Q> const& _w)
 		: x(static_cast<T>(_x.x))
 		, y(static_cast<T>(_yz.x))
 		, z(static_cast<T>(_yz.y))
@@ -252,7 +252,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(A _x, B _y, vec<2, C, Q> const& _zw)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(A _x, B _y, vec<2, C, Q> const& _zw)
 		: x(static_cast<T>(_x))
 		, y(static_cast<T>(_y))
 		, z(static_cast<T>(_zw.x))
@@ -261,7 +261,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, typename C, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<1, B, Q> const& _y, vec<2, C, Q> const& _zw)
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<1, B, Q> const& _y, vec<2, C, Q> const& _zw)
 		: x(static_cast<T>(_x.x))
 		, y(static_cast<T>(_y.x))
 		, z(static_cast<T>(_zw.x))
@@ -270,7 +270,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<3, A, Q> const& _xyz, B _w) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<3, A, Q> const& _xyz, B _w) :
 		x(static_cast<T>(_xyz.x)),
 		y(static_cast<T>(_xyz.y)),
 		z(static_cast<T>(_xyz.z)),
@@ -279,7 +279,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<3, A, Q> const& _xyz, vec<1, B, Q> const& _w) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<3, A, Q> const& _xyz, vec<1, B, Q> const& _w) :
 		x(static_cast<T>(_xyz.x)),
 		y(static_cast<T>(_xyz.y)),
 		z(static_cast<T>(_xyz.z)),
@@ -288,7 +288,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(A _x, vec<3, B, Q> const& _yzw) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(A _x, vec<3, B, Q> const& _yzw) :
 		x(static_cast<T>(_x)),
 		y(static_cast<T>(_yzw.x)),
 		z(static_cast<T>(_yzw.y)),
@@ -297,7 +297,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<3, B, Q> const& _yzw) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<1, A, Q> const& _x, vec<3, B, Q> const& _yzw) :
 		x(static_cast<T>(_x.x)),
 		y(static_cast<T>(_yzw.x)),
 		z(static_cast<T>(_yzw.y)),
@@ -306,7 +306,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename A, typename B, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, vec<2, B, Q> const& _zw) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<2, A, Q> const& _xy, vec<2, B, Q> const& _zw) :
 		x(static_cast<T>(_xy.x)),
 		y(static_cast<T>(_xy.y)),
 		z(static_cast<T>(_zw.x)),
@@ -315,7 +315,7 @@ namespace detail
 
 	template<typename T, precision P>
 	template<typename U, precision Q>
-	GLM_FUNC_QUALIFIER GLM_CONSTEXPR vec<4, T, P>::vec(vec<4, U, Q> const& v) :
+	GLM_FUNC_QUALIFIER GLM_CONSTEXPR_CTOR vec<4, T, P>::vec(vec<4, U, Q> const& v) :
 		x(static_cast<T>(v.x)),
 		y(static_cast<T>(v.y)),
 		z(static_cast<T>(v.z)),
diff --git a/glm/gtc/color_space.inl b/glm/gtc/color_space.inl
index b9475bd2..56341dea 100644
--- a/glm/gtc/color_space.inl
+++ b/glm/gtc/color_space.inl
@@ -23,7 +23,7 @@ namespace detail
 	{
 		GLM_FUNC_QUALIFIER static vec<4, T, P> call(vec<4, T, P> const& ColorRGB, T GammaCorrection)
 		{
-			return vec<4, T, P>(compute_rgbToSrgb<3, T, P, vec>::call(vec<3, T, P>(ColorRGB), GammaCorrection), ColorRGB.a);
+			return vec<4, T, P>(compute_rgbToSrgb<3, T, P, vec>::call(vec<3, T, P>(ColorRGB), GammaCorrection), ColorRGB.w);
 		}
 	};
 
@@ -44,7 +44,7 @@ namespace detail
 	{
 		GLM_FUNC_QUALIFIER static vec<4, T, P> call(vec<4, T, P> const& ColorSRGB, T Gamma)
 		{
-			return vec<4, T, P>(compute_srgbToRgb<3, T, P, vec>::call(vec<3, T, P>(ColorSRGB), Gamma), ColorSRGB.a);
+			return vec<4, T, P>(compute_srgbToRgb<3, T, P, vec>::call(vec<3, T, P>(ColorSRGB), Gamma), ColorSRGB.w);
 		}
 	};
 }//namespace detail
diff --git a/glm/gtx/color_space.inl b/glm/gtx/color_space.inl
index 9f5572bf..09fc9f65 100644
--- a/glm/gtx/color_space.inl
+++ b/glm/gtx/color_space.inl
@@ -105,20 +105,19 @@ namespace glm
 	{
 		vec<3, T, defaultp> rgbw = vec<3, T, defaultp>(T(0.2126), T(0.7152), T(0.0722));
 
-		T col0 = (T(1) - s) * rgbw.r;
-		T col1 = (T(1) - s) * rgbw.g;
-		T col2 = (T(1) - s) * rgbw.b;
+		vec<3, T, defaultp> const col((T(1) - s) * rgbw);
 
 		mat<4, 4, T, defaultp> result(T(1));
-		result[0][0] = col0 + s;
-		result[0][1] = col0;
-		result[0][2] = col0;
-		result[1][0] = col1;
-		result[1][1] = col1 + s;
-		result[1][2] = col1;
-		result[2][0] = col2;
-		result[2][1] = col2;
-		result[2][2] = col2 + s;
+		result[0][0] = col.x + s;
+		result[0][1] = col.x;
+		result[0][2] = col.x;
+		result[1][0] = col.y;
+		result[1][1] = col.y + s;
+		result[1][2] = col.y;
+		result[2][0] = col.z;
+		result[2][1] = col.z;
+		result[2][2] = col.z + s;
+
 		return result;
 	}
 
diff --git a/readme.md b/readme.md
index 71151e0d..65cce64d 100644
--- a/readme.md
+++ b/readme.md
@@ -93,6 +93,8 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 - Fixed intersectRayPlane returns true in parallel case #578
 - Fixed GCC 6.2 compiler warnings #580
 - Fixed GTX_matrix_decompose decompose #582 #448
+- Fixed GCC 4.5 and older build #566
+- Fixed Visual C++ internal error when declaring a global vec type with siwzzle expression enabled #594
 
 ---
 ### [GLM 0.9.8.3](https://github.com/g-truc/glm/releases/tag/0.9.8.3) - 2016-11-12
diff --git a/test/bug/bug_ms_vec_static.cpp b/test/bug/bug_ms_vec_static.cpp
index e2e75708..12e6ff51 100644
--- a/test/bug/bug_ms_vec_static.cpp
+++ b/test/bug/bug_ms_vec_static.cpp
@@ -19,7 +19,7 @@ struct vec2
 };
 
 // Visual C++ has a bug generating the error: fatal error C1001: An internal error has occurred in the compiler.
-vec2 Bar;
+// vec2 Bar;
 
 int main()
 {
diff --git a/test/core/core_func_swizzle.cpp b/test/core/core_func_swizzle.cpp
index dfd6c8af..cd2367a2 100644
--- a/test/core/core_func_swizzle.cpp
+++ b/test/core/core_func_swizzle.cpp
@@ -2,6 +2,8 @@
 #define GLM_FORCE_SWIZZLE
 #include <glm/glm.hpp>
 
+#if !GLM_HAS_ONLY_XYZW
+
 int test_ivec2_swizzle()
 {
 	int Error = 0;
@@ -60,16 +62,19 @@ int test_vec4_swizzle()
 
 	return Error;
 }
+#endif//!GLM_HAS_ONLY_XYZW
 
 int main()
 {
 	int Error = 0;
 
-	Error += test_ivec2_swizzle();
-	Error += test_ivec3_swizzle();
-	Error += test_ivec4_swizzle();
+#	if !GLM_HAS_ONLY_XYZW
+		Error += test_ivec2_swizzle();
+		Error += test_ivec3_swizzle();
+		Error += test_ivec4_swizzle();
 
-	Error += test_vec4_swizzle();
+		Error += test_vec4_swizzle();
+#	endif//!GLM_HAS_ONLY_XYZW
 
 	return Error;
 }
diff --git a/test/core/core_type_vec1.cpp b/test/core/core_type_vec1.cpp
index b03057aa..ff1555fe 100644
--- a/test/core/core_type_vec1.cpp
+++ b/test/core/core_type_vec1.cpp
@@ -3,6 +3,9 @@
 #include <glm/gtc/vec1.hpp>
 #include <vector>
 
+static glm::vec1 v1;
+static glm::vec1 v2(1);
+
 int test_vec1_operators()
 {
 	int Error(0);
diff --git a/test/core/core_type_vec2.cpp b/test/core/core_type_vec2.cpp
index 97c7f9b1..89ab00cb 100644
--- a/test/core/core_type_vec2.cpp
+++ b/test/core/core_type_vec2.cpp
@@ -6,6 +6,10 @@
 #	include <type_traits>
 #endif
 
+static glm::vec2 v1;
+static glm::vec2 v2(1);
+static glm::vec2 v3(1, 1);
+
 int test_vec2_operators()
 {
 	int Error = 0;
diff --git a/test/core/core_type_vec3.cpp b/test/core/core_type_vec3.cpp
index c9370c17..072767f9 100644
--- a/test/core/core_type_vec3.cpp
+++ b/test/core/core_type_vec3.cpp
@@ -7,6 +7,10 @@
 #include <cstdio>
 #include <vector>
 
+static glm::vec3 v1;
+static glm::vec3 v2(1);
+static glm::vec3 v3(1, 1, 1);
+
 int test_vec3_ctor()
 {
 	int Error = 0;
@@ -334,6 +338,7 @@ int test_vec3_swizzle3_3()
 	return Error;
 }
 
+#if !GLM_HAS_ONLY_XYZW
 int test_vec3_swizzle_operators()
 {
 	int Error = 0;
@@ -440,6 +445,7 @@ int test_vec3_swizzle_partial()
 
 	return Error;
 }
+#endif//!GLM_HAS_ONLY_XYZW
 
 int test_operator_increment()
 {
@@ -480,10 +486,13 @@ int main()
 	Error += test_vec3_size();
 	Error += test_vec3_swizzle3_2();
 	Error += test_vec3_swizzle3_3();
-	Error += test_vec3_swizzle_partial();
-	Error += test_vec3_swizzle_operators();
-	Error += test_vec3_swizzle_functions();
 	Error += test_operator_increment();
 
+#	if !GLM_HAS_ONLY_XYZW
+		Error += test_vec3_swizzle_partial();
+		Error += test_vec3_swizzle_operators();
+		Error += test_vec3_swizzle_functions();
+#	endif//!GLM_HAS_ONLY_XYZW
+
 	return Error;
 }
diff --git a/test/core/core_type_vec4.cpp b/test/core/core_type_vec4.cpp
index 83ba5ef7..72af25d8 100644
--- a/test/core/core_type_vec4.cpp
+++ b/test/core/core_type_vec4.cpp
@@ -8,7 +8,11 @@
 #include <ctime>
 #include <vector>
 
-template<int Value>
+static glm::vec4 v1;
+static glm::vec4 v2(1);
+static glm::vec4 v3(1, 1, 1, 1);
+
+template <int Value>
 struct mask
 {
 	enum{value = Value};