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 classes6;
extern(C) int printf(char*, ...);

class C
{
    void f()
    {
        printf("world\n");
    }
}

class D : C
{
    void f()
    {
        printf("moon\n");
    }
}


extern(C)
{
    void srand(uint seed);
    int rand();
}

import ldc.intrinsics;

void main()
{
    C c;
    srand(readcyclecounter());
    if (rand() % 2)
        c = new C;
    else
        c = new D;
    c.f();
}