Adjust some more code that was depending on the function and delegate calling conventions being equal. There's also an instance in `tango.text.convert.Layout` that should be adjusted: {{{ Index: tango/text/convert/Layout.d =================================================================== --- tango/text/convert/Layout.d (revision 4578) +++ tango/text/convert/Layout.d (working copy) -660,8 +660,12 @@ case TypeCode.STRUCT: auto s = cast(TypeInfo_Struct) type; - if (s.xtoString) - return Utf.fromString8 (s.xtoString(p), result); + if (s.xtoString) { + char[] delegate() toString; + toString.ptr = p; + toString.funcptr = cast(char[] function()) s.xtoString; + return Utf.fromString8 (toString(), result); + } goto default; case TypeCode.INTERFACE: }}}

module j;

interface Inter1
{
    int func1();
}

interface Inter2
{
    int func2();
}

class C12 : Inter1, Inter2
{
    int func1()
    {
        return 1;
    }
    int func2()
    {
        return 2;
    }
}

void func(Object c)
{
    auto i1 = cast(Inter1)c;
    assert(i1.func1() == 1);
    auto i2 = cast(Inter2)c;
    assert(i2.func2() == 2);
    auto j1 = cast(Inter1)i2;
    assert(j1.func1() == 1);
    auto j2 = cast(Inter2)i1;
    assert(j2.func2() == 2);
}

void main()
{
    scope c = new C12;
    func(c);
    printf("OK\n");
}

extern(C) int printf(char*,...);