diff --git a/glm/gtc/swizzle.inl b/glm/gtc/swizzle.inl
index a1e7a61b..9a163764 100644
--- a/glm/gtc/swizzle.inl
+++ b/glm/gtc/swizzle.inl
@@ -1,134 +1,249 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2010 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2011-01-15
+// Updated : 2011-01-15
+// Licence : This source is under MIT License
+// File    : glm/gtc/swizzle.inl
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
 namespace glm{
 namespace gtc{
-namespace swizzle
+namespace swizzle{
+
+template <typename T, template <typename> class vecType>
+inline T swizzle
+(	
+	vecType<T> const & v,
+	comp x
+)
 {
-	template <typename T, template <typename> class vecType>
-	inline T swizzle
-	(	
-		vecType<T> const & v,
-		comp x
-	)
-	{
-		assert(int(x) < int(typename vecType<T>::_size));
-		return v[x];
-	}
+	assert(int(x) < int(typename vecType<T>::_size));
+	return v[x];
+}
 
-	template <typename T>
-	inline detail::tvec2<T> swizzle
-	(
-		detail::tvec4<T> const & v,
-		comp x, comp y
-	)
-	{
-		return detail::tvec2<T>(
-			v[x],
-			v[y]);
-	}
+template <typename T>
+inline detail::tvec2<T> swizzle
+(
+	detail::tvec4<T> const & v,
+	comp x, comp y
+)
+{
+	return detail::tvec2<T>(
+		v[x],
+		v[y]);
+}
 
-	template <typename T>
-	inline detail::tvec3<T> swizzle
-	(
-		detail::tvec4<T> const & v,
-		comp x, comp y, comp z
-	)
-	{
-		return detail::tvec3<T>(
-			v[x],
-			v[y],
-			v[z]);
-	}
+template <typename T>
+inline detail::tvec3<T> swizzle
+(
+	detail::tvec4<T> const & v,
+	comp x, comp y, comp z
+)
+{
+	return detail::tvec3<T>(
+		v[x],
+		v[y],
+		v[z]);
+}
 
-	template <typename T>
-	inline detail::tvec4<T> swizzle
-	(
-		detail::tvec4<T> const & v,
-		comp x, comp y, comp z, comp w
-	)
-	{
-		return detail::tvec4<T>(v[x], v[y],	v[z], v[w]);
-	}
+template <typename T>
+inline detail::tvec4<T> swizzle
+(
+	detail::tvec4<T> const & v,
+	comp x, comp y, comp z, comp w
+)
+{
+	return detail::tvec4<T>(v[x], v[y],	v[z], v[w]);
+}
 
-	template <typename T>
-	inline detail::tref4<T> swizzle
-	(
-		detail::tvec4<T> & v,
-		comp x, comp y, comp z, comp w
-	)
-	{
-		return detail::tref4<T>(v[x], v[y],	v[z], v[w]);
-	}
+template <comp X>
+inline int swizzle
+(
+	detail::tvec4<int> const & v
+)
+{
+	return v[X];
+}
 
-	template <comp X>
-	inline int swizzle
-	(
-		detail::tvec4<int> const & v
-	)
-	{
-		return v[X];
-	}
+template <comp X>
+inline float swizzle
+(
+	detail::tvec4<float> const & v
+)
+{
+	return v[X];
+}
 
-	template <comp X>
-	inline float swizzle
-	(
-		detail::tvec4<float> const & v
-	)
-	{
-		return v[X];
-	}
+template <comp X, comp Y>
+inline detail::tvec2<int> swizzle
+(
+	detail::tvec4<int> const & v
+)
+{
+	return detail::tvec2<int>(v[X], v[Y]);
+}
 
-	template <comp X, comp Y>
-	inline detail::tvec2<int> swizzle
-	(
-		detail::tvec4<int> const & v
-	)
-	{
-		return detail::tvec2<int>(v[X], v[Y]);
-	}
+template <comp X, comp Y>
+inline detail::tvec2<float> swizzle
+(
+	detail::tvec4<float> const & v
+)
+{
+	return detail::tvec2<float>(v[X], v[Y]);
+}
 
-	template <comp X, comp Y>
-	inline detail::tvec2<float> swizzle
-	(
-		detail::tvec4<float> const & v
-	)
-	{
-		return detail::tvec2<float>(v[X], v[Y]);
-	}
+template <comp X, comp Y, comp Z>
+inline detail::tvec3<int> swizzle
+(
+	detail::tvec4<int> const & v
+)
+{
+	return detail::tvec3<int>(v[X], v[Y], v[Z]);
+}
 
-	template <comp X, comp Y, comp Z>
-	inline detail::tvec3<int> swizzle
-	(
-		detail::tvec4<int> const & v
-	)
-	{
-		return detail::tvec3<int>(v[X], v[Y], v[Z]);
-	}
+template <comp X, comp Y, comp Z>
+inline detail::tvec3<float> swizzle
+(
+	detail::tvec4<float> const & v
+)
+{
+	return detail::tvec3<float>(v[X], v[Y],	v[Z]);
+}
 
-	template <comp X, comp Y, comp Z>
-	inline detail::tvec3<float> swizzle
-	(
-		detail::tvec4<float> const & v
-	)
-	{
-		return detail::tvec3<float>(v[X], v[Y],	v[Z]);
-	}
+template <comp X, comp Y, comp Z, comp W>
+inline detail::tvec4<int> swizzle
+(
+	detail::tvec4<int> const & v
+)
+{
+	return detail::tvec4<int>(v[X], v[Y], v[Z], v[W]);
+}
 
-	template <comp X, comp Y, comp Z, comp W>
-	inline detail::tvec4<int> swizzle
-	(
-		detail::tvec4<int> const & v
-	)
-	{
-		return detail::tvec4<int>(v[X], v[Y], v[Z], v[W]);
-	}
+template <comp X, comp Y, comp Z, comp W>
+inline detail::tvec4<float> swizzle
+(
+	detail::tvec4<float> const & v
+)
+{
+	return detail::tvec4<float>(v[X], v[Y],	v[Z], v[W]);
+}
 
-	template <comp X, comp Y, comp Z, comp W>
-	inline detail::tvec4<float> swizzle
-	(
-		detail::tvec4<float> const & v
-	)
-	{
-		return detail::tvec4<float>(v[X], v[Y],	v[Z], v[W]);
-	}
+
+template <typename T>
+inline T& swizzle
+(
+	detail::tvec4<T> & v,
+	comp x
+)
+{
+	return v[x];
+}
+
+template <typename T>
+inline detail::tref2<T> swizzle
+(
+	detail::tvec4<T> & v,
+	comp x, comp y
+)
+{
+	return detail::tref2<T>(v[x], v[y]);
+}
+
+template <typename T>
+inline detail::tref3<T> swizzle
+(
+	detail::tvec4<T> & v,
+	comp x, comp y, comp z
+)
+{
+	return detail::tref3<T>(v[x], v[y],	v[z]);
+}
+
+template <typename T>
+inline detail::tref4<T> swizzle
+(
+	detail::tvec4<T> & v,
+	comp x, comp y, comp z, comp w
+)
+{
+	return detail::tref4<T>(v[x], v[y],	v[z], v[w]);
+}
+
+template <comp x>
+inline float& swizzle
+(
+	detail::tvec4<float> & v
+)
+{
+	return v[x];
+}
+
+template <comp x>
+inline int& swizzle
+(
+	detail::tvec4<int> & v
+)
+{
+	return v[x];
+}
+
+template <comp x, comp y>
+inline detail::tref2<float> swizzle
+(
+	detail::tvec4<float> & v
+)
+{
+	return detail::tref2<float>(v[x], v[y]);
+}
+
+template <comp x, comp y>
+inline detail::tref2<int> swizzle
+(
+	detail::tvec4<int> & v
+)
+{
+	return detail::tref2<int>(v[x], v[y]);
+}
+
+template <comp x, comp y, comp z>
+inline detail::tref3<float> swizzle
+(
+	detail::tvec4<float> & v
+)
+{
+	return detail::tref3<float>(v[x], v[y],	v[z]);
+}
+	
+template <comp x, comp y, comp z>
+inline detail::tref3<int> swizzle
+(
+	detail::tvec4<int> & v
+)
+{
+	return detail::tref3<int>(v[x], v[y], v[z]);
+}
+
+template <comp x, comp y, comp z, comp w>
+inline detail::tref4<float> swizzle
+(
+	detail::tvec4<float> & v
+)
+{
+	return detail::tref4<float>(v[x], v[y],	v[z], v[w]);
+}
+
+template <comp x, comp y, comp z, comp w>
+inline detail::tref4<int> swizzle
+(
+	detail::tvec4<int> & v
+)
+{
+	return detail::tref4<int>(v[x], v[y],	v[z], v[w]);
+}
 
 }//namespace swizzle
 }//namespace gtc
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 75cfd8ea..47c32fab 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,7 +1,7 @@
 function(glmCreateTestGTC NAME)
 	set(SAMPLE_NAME test-${NAME})
 
-	add_executable(${SAMPLE_NAME} ${NAME}.cpp)
+	add_executable(${SAMPLE_NAME} ${NAME}.cpp ../test.hpp ../test.cpp)
 endfunction(glmCreateTestGTC)
 
 add_subdirectory(bug)
diff --git a/test/gtc/gtc-swizzle.cpp b/test/gtc/gtc-swizzle.cpp
index c2d51d99..cae7c61b 100644
--- a/test/gtc/gtc-swizzle.cpp
+++ b/test/gtc/gtc-swizzle.cpp
@@ -11,12 +11,84 @@
 #include <glm/glm.hpp>
 #include <glm/gtc/swizzle.hpp>
 
-int test_swizzle_vec4_dynamic()
+int test_swizzle_vec4_ref_dynamic()
+{
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec4 B(2, 1, 0, 3);
+		glm::swizzle(A, glm::Z, glm::Y, glm::X, glm::W) = B;
+		assert(A.x == B.x && A.y == B.y && A.z == B.z && A.w == B.w);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec3 B(2, 1, 0);
+		glm::swizzle(A, glm::Z, glm::Y, glm::X) = B;
+		assert(A.x == B.x && A.y == B.y && A.z == B.z);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec2 B(2, 1);
+		glm::swizzle(A, glm::Z, glm::Y) = B;
+		assert(A.x == B.x && A.y == B.y);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		int B(2);
+		glm::swizzle(A, glm::Z) = B;
+		assert(A.x == B.x && A.y == B.y);
+	}
+
+	return 0;
+}
+
+int test_swizzle_vec4_ref_static()
+{
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec4 B(2, 1, 0, 3);
+		glm::swizzle<glm::Z, glm::Y, glm::X, glm::W>(A) = B;
+		assert(A.x == B.x && A.y == B.y && A.z == B.z && A.w == B.w);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec3 B(2, 1, 0);
+		glm::swizzle<glm::Z, glm::Y, glm::X>(A) = B;
+		assert(A.x == B.x && A.y == B.y && A.z == B.z);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		glm::ivec2 B(2, 1);
+		glm::swizzle<glm::Z, glm::Y>(A) = B;
+		assert(A.x == B.x && A.y == B.y);
+	}
+
+	{
+		glm::ivec4 A(0, 1, 2, 3);
+		int B(2);
+		glm::swizzle<glm::Z>(A) = B;
+		assert(A.x == B.x && A.y == B.y);
+	}
+
+	return 0;
+}
+
+int test_swizzle_vec4_const_dynamic()
 {
 	glm::ivec4 A(0, 1, 2, 3);
 	glm::ivec4 B = glm::swizzle(A, glm::B, glm::G, glm::R, glm::A);
+	assert(glm::all(glm::equal(A, B)));
+
 	glm::ivec3 C = glm::swizzle(A, glm::W, glm::Y, glm::Z);
+	assert(glm::all(glm::equal(A, C)));
+
 	glm::ivec2 D = glm::swizzle(A, glm::W, glm::X);
+	assert(glm::all(glm::equal(A, D)));
+
 	assert(D.x == A.w && D.y == A.x);
 	int E = glm::swizzle(A, glm::Q);
 	assert(E == A.q);
@@ -24,12 +96,19 @@ int test_swizzle_vec4_dynamic()
 	return 0;
 }
 
-int test_swizzle_vec4_static()
+int test_swizzle_vec4_const_static()
 {
 	glm::ivec4 A(0, 1, 2, 3);
+
 	glm::ivec4 B = glm::swizzle<glm::B, glm::G, glm::R, glm::A>(A);
+	assert(glm::all(glm::equal(A, B)));
+
 	glm::ivec3 C = glm::swizzle<glm::W, glm::Y, glm::Z>(A);
+	assert(glm::all(glm::equal(A, C)));
+
 	glm::ivec2 D = glm::swizzle<glm::W, glm::X>(A);
+	assert(glm::all(glm::equal(A, D)));
+
 	int E = glm::swizzle<glm::Q>(A);
 	assert(E == A.q);
 
@@ -39,8 +118,10 @@ int test_swizzle_vec4_static()
 int main(int argc, void* argv[])
 {
 	int Failed = 0;
-	Failed += test_swizzle_vec4_dynamic();
-	Failed += test_swizzle_vec4_static();
+	Failed += test_swizzle_vec4_ref_dynamic();
+	Failed += test_swizzle_vec4_ref_static();
+	Failed += test_swizzle_vec4_const_dynamic();
+	Failed += test_swizzle_vec4_const_static();
 
 	return Failed;
 }
diff --git a/test/test.cpp b/test/test.cpp
new file mode 100644
index 00000000..e69de29b
diff --git a/test/test.hpp b/test/test.hpp
new file mode 100644
index 00000000..815bba7e
--- /dev/null
+++ b/test/test.hpp
@@ -0,0 +1,38 @@
+#ifndef glm_test_included
+#define glm_test_included
+
+#include <string>
+
+namespace glm{
+namespace test
+{
+	class test
+	{
+		enum result
+		{
+			PASSED,
+			FAILED,
+			ASSERT,
+			STATIC,
+			MAX
+		};
+
+	public:
+		test(std::string const & Name, std::size_t const & Count);
+		result & operator[](std::size_t const & Index);
+		result const & operator[](std::size_t const & Index) const;
+
+		static int get(result const Result) const;
+		static void log(test const & Test);
+
+	protected:
+		std::string Name;
+		std::vertor<result> Tests;
+
+		static test Result[MAX];
+	};
+
+}//namespace test
+}//namespace glm
+
+#endif//glm_test_included