After doing a quick test I get the same error.

Code:

---

typedef short TYPEVAR;

TYPEVAR test()
{
	return 1;
} 

---

However defining TYPEVAR as an int gives no error.



Code:

---

typedef int TYPEVAR;

TYPEVAR test()
{
	return 1;
}
 

---

So I would suggest that the problem lies in the compiler.