On Fri, 13 Jan 2012 15:27:56 -0500, H. S. Teoh <hst...@quickfur.ath.cx>
wrote:
Why does the following code compile?
import std.stdio;
int f(ref int x) {
return x++;
}
class A {
int x=123;
int g() const {
return f(x);
}
}
void main() {
auto a = new A;
writeln(a.g());
writeln(a.g());
}
Shouldn't the const member g() be prohibited from passing a ref to a
member variable to f()?
Yes, it's a bug (I think already reported, let me check... Yep:
http://d.puremagic.com/issues/show_bug.cgi?id=5493)
But this code not only compiles, it outputs:
123
124
So I've managed to call a const member of A to alter the value of A.x?
Am I misunderstanding the meaning of const when applied to a member
function, or is this a compiler bug?
P.S. I'm using gdc-4.6; does dmd also have this behaviour?
Yes, the pull request hasn't been merged yet.
BTW, I tested with 2.057, which I downloaded from github. Holy CRAP,
downloaded in less than 1 second!!!
Awesome :)
Can we archive all the old DMD downloads there?
-Steve
