This problem appears only if one of the parameters is an
interface. Without it or using any other type as a second
parameter instead of the interface, it compiles. Also it compiles
if the passed interface is null. The example below uses
short/ushort, but I found the same behaviour for any combination
of integral types of the same bitsize (byte/ubyte/char,
ushort/short/wchar, int/uint/dchar, long/ulong)
D 2.066.1
interface I {}
class C: I {}
void func(ushort s, I i)
{
writeln("ushort overload");
}
void func(short s, I i)
{
writeln("short overload");
}
void call(short s)
{
C c = new C();
I d = new C();
func(s, c); // ---- ERROR ---- see below
//but these are ok
func(s, cast(I)c) //ok
func(s, d) //ok
func(s, null) //ok
}
main.func called with argument types (short, C) matches both:
main.func(short s, I i)
main.func(ushort s, I i)
