Back out the memset optimisation. It helps with code size but causes inexplicable link-time failures (undefined references to __cxa_pure_virtual).

Thank you very much Mr GCC.  Can I have my evening back?


git-svn-id: https://arducopter.googlecode.com/svn/trunk@1352 f9c3cf11-9bcb-44bc-f272-b75c42450872

libraries/AP_Math/vector2.h

@@ -31,7 +31,7 @@ struct Vector2
 	T x, y;
 
 	// trivial ctor
-	Vector2<T>() {memset(this, 0, sizeof(*this));}
+	Vector2<T>() { x = y = 0; }
 
 	// setting ctor
 	Vector2<T>(const T x0, const T y0): x(x0), y(y0) {}

libraries/AP_Math/vector3.h

@@ -51,7 +51,7 @@ public:
 	T x, y, z;
 
 	// trivial ctor
-	Vector3<T>() {memset(this, 0, sizeof(*this));}
+	Vector3<T>() { x = y = x = 0; }
 
 	// setting ctor
 	Vector3<T>(const T x0, const T y0, const T z0): x(x0), y(y0), z(z0) {}