Fixed: outerProduct was defined incorrectly for unmatched vecX types. E.g. outerProduct(vec2, vec4) did not succeed because the matrix return types were wrong. The computing function seemed fine. I used https://en.wikipedia.org/wiki/Outer_product as reference on what the number of columns/rows ''should'' be and fixed it so that it matches the description from wikipedia

Added: tests for outerProduct with unmatched vector dimensions (actually testing all combinations now)

glm/detail/func_matrix.hpp

@@ -72,19 +72,19 @@ namespace detail
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec2, tvec3>
 	{
-		typedef tmat2x3<T, P> type;
+		typedef tmat3x2<T, P> type;
 	};
 
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec2, tvec4>
 	{
-		typedef tmat2x4<T, P> type;
+		typedef tmat4x2<T, P> type;
 	};
 
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec3, tvec2>
 	{
-		typedef tmat3x2<T, P> type;
+		typedef tmat2x3<T, P> type;
 	};
 
 	template <typename T, precision P>
@@ -96,19 +96,19 @@ namespace detail
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec3, tvec4>
 	{
-		typedef tmat3x4<T, P> type;
+		typedef tmat4x3<T, P> type;
 	};
 
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec4, tvec2>
 	{
-		typedef tmat4x2<T, P> type;
+		typedef tmat2x4<T, P> type;
 	};
 
 	template <typename T, precision P>
 	struct outerProduct_trait<T, P, tvec4, tvec3>
 	{
-		typedef tmat4x3<T, P> type;
+		typedef tmat3x4<T, P> type;
 	};
 
 	template <typename T, precision P>

test/core/core_func_matrix.cpp

@@ -101,7 +101,18 @@ int test_matrixCompMult()
 
 int test_outerProduct()
 {
-	glm::mat4 m = glm::outerProduct(glm::vec4(1.0f), glm::vec4(1.0f));
+	{ glm::mat2 m = glm::outerProduct(glm::vec2(1.0f), glm::vec2(1.0f)); }
+	{ glm::mat3 m = glm::outerProduct(glm::vec3(1.0f), glm::vec3(1.0f)); }
+	{ glm::mat4 m = glm::outerProduct(glm::vec4(1.0f), glm::vec4(1.0f)); }
+
+  { glm::mat2x3 m = glm::outerProduct(glm::vec3(1.0f), glm::vec2(1.0f)); }
+  { glm::mat2x4 m = glm::outerProduct(glm::vec4(1.0f), glm::vec2(1.0f)); }
+
+  { glm::mat3x2 m = glm::outerProduct(glm::vec2(1.0f), glm::vec3(1.0f)); }
+  { glm::mat3x4 m = glm::outerProduct(glm::vec4(1.0f), glm::vec3(1.0f)); }
+  
+  { glm::mat4x2 m = glm::outerProduct(glm::vec2(1.0f), glm::vec4(1.0f)); }
+  { glm::mat4x3 m = glm::outerProduct(glm::vec3(1.0f), glm::vec4(1.0f)); }
 
 	return 0;
 }