generics: problem with methods when type parameter doesn't appear in signature

class Bug
{
public static int fi()
{
return fi();
}

public static void gi()
{
fi();
gi();
}

public static <T> int f()
{
return f();
}

public static <T> void g()
{
f(); // incompatible.types found: <T>int required: java.lang.Object
int i = f(); // workaround for f()
g(); // incompatible.types found: <T>void required: java.lang.Object
}
// required type looks strange

public static <T> void h()
{
g(); // incompatible.types found: <T>void required: java.lang.Object
}

public static <T> int f(T x)
{
return f(x);
}

public static <T> void g(T x)
{
f(x);
g(x); // incompatible.types found: <T>void required: java.lang.Object
}

public static <T> void h(T x)
{
g(x); // works fine now; why not in void g(T x)?
}
}