• Jarrett Billingsley (27/27) Jan 09 2005 This works:
• Thomas Kuehne (12/12) Jan 10 2005 -----BEGIN PGP SIGNED MESSAGE-----

"Jarrett Billingsley" <kb3ctd2 yahoo.com> writes:

This works:

class A
{}

class B : A
{}

void main()
{
    B b=new B;
    A a=cast(A)b;
    a=null;
}

Change main() to this, however:

void main()
{
    B b=new B;
    cast(A)b=null;
}

And it flags it as an error.

This also makes it impossible to do something like:

void fork(inout A a)
{}

void main()
{
    B b=new B;
    fork(b);  // explicitly casting doesn't work either
}

It also has this problem if A is an interface.

Thomas Kuehne <thomas-dloop kuehne.thisisspam.cn> writes:

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Hash: SHA1

Added to DStress as

http://dstress.kuehne.cn/run/cast_08.d
http://dstress.kuehne.cn/run/cast_09.d
http://dstress.kuehne.cn/run/cast_10.d

Thomas

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