I don't know how to file bug reports but I'm sure this shouldn't happen :)
DMD gives an error.

import std.stdio;

void main()
{
	immutable Cat cat = cast(immutable) new Cat(5);
	happyBirthday(cat.age);
	writefln("My 5 year old cat is %s years old!", cat.age);
}

void happyBirthday(ref int i)
{
	i++;
}

class Cat
{
	public int age;

	this(int a)
	{
		this.age = age;
	}
}


Output:
My 5 year old cat is 6 years old!

This is an interesting problem with the ref-is-not-part-of-the-type design.
You can't really have a const(ref) in D, and a ref const(int) is kinda
backwards logic.
I've never understood why ref isn't part of the type... can someone explain
why this is a good thing? It seems to cause all sorts of troublesome
problems... auto ref in templates for one.


On 12 April 2013 10:50, Nicholas Smith <nmsmith65@gmail.com> wrote:

> I don't know how to file bug reports but I'm sure this shouldn't happen :) DMD gives an error.
>
> import std.stdio;
>
> void main()
> {
>         immutable Cat cat = cast(immutable) new Cat(5);
>         happyBirthday(cat.age);
>         writefln("My 5 year old cat is %s years old!", cat.age);
> }
>
> void happyBirthday(ref int i)
> {
>         i++;
> }
>
> class Cat
> {
>         public int age;
>
>         this(int a)
>         {
>                 this.age = age;
>         }
> }
>
>
> Output:
> My 5 year old cat is 6 years old!
>

On Friday, 12 April 2013 at 00:50:03 UTC, Nicholas Smith wrote:
> I don't know how to file bug reports but I'm sure this shouldn't happen :)
> DMD gives an error.
>

That's a bug in the frontend, which has since been fixed and merged into gdc.

Just how old is your compiler? :)

On 12 April 2013 01:50, Nicholas Smith <nmsmith65@gmail.com> wrote:

> I don't know how to file bug reports but I'm sure this shouldn't happen :)
>
>
Real gdc bugs get filed here:  http://bugzilla.gdcproject.org


Regards
-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';

On Friday, 12 April 2013 at 06:39:04 UTC, Iain Buclaw wrote:
> On Friday, 12 April 2013 at 00:50:03 UTC, Nicholas Smith wrote:
>> I don't know how to file bug reports but I'm sure this shouldn't happen :)
>> DMD gives an error.
>>
>
> That's a bug in the frontend, which has since been fixed and merged into gdc.
>
> Just how old is your compiler? :)

It's from the Ubuntu Software Centre, apparently version 4.6.3.
Not sure how old that is (latest is around 4.8 right?), but I don't have the latest build. I haven't bothered to keep that up to date :)

If it's fixed in the current version then hooray.

On Friday, 12 April 2013 at 07:53:13 UTC, Nicholas Smith wrote:
> On Friday, 12 April 2013 at 06:39:04 UTC, Iain Buclaw wrote:
>> On Friday, 12 April 2013 at 00:50:03 UTC, Nicholas Smith wrote:
>>> I don't know how to file bug reports but I'm sure this shouldn't happen :)
>>> DMD gives an error.
>>>
>>
>> That's a bug in the frontend, which has since been fixed and merged into gdc.
>>
>> Just how old is your compiler? :)
>
> It's from the Ubuntu Software Centre, apparently version 4.6.3.
> Not sure how old that is (latest is around 4.8 right?), but I don't have the latest build. I haven't bothered to keep that up to date :)
>
> If it's fixed in the current version then hooray.

IIRC, in GDC time, you're in the distant past.

On 12 April 2013 10:56, John Colvin <john.loughran.colvin@gmail.com> wrote:

> On Friday, 12 April 2013 at 07:53:13 UTC, Nicholas Smith wrote:
>
>> On Friday, 12 April 2013 at 06:39:04 UTC, Iain Buclaw wrote:
>>
>>> On Friday, 12 April 2013 at 00:50:03 UTC, Nicholas Smith wrote:
>>>
>>>> I don't know how to file bug reports but I'm sure this shouldn't happen
>>>> :)
>>>> DMD gives an error.
>>>>
>>>>
>>> That's a bug in the frontend, which has since been fixed and merged into gdc.
>>>
>>> Just how old is your compiler? :)
>>>
>>
>> It's from the Ubuntu Software Centre, apparently version 4.6.3.
>> Not sure how old that is (latest is around 4.8 right?), but I don't have
>> the latest build. I haven't bothered to keep that up to date :)
>>
>> If it's fixed in the current version then hooray.
>>
>
> IIRC, in GDC time, you're in the distant past.
>

In D time, you're a Neanderthal.

-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';

On Friday, 12 April 2013 at 10:03:50 UTC, Iain Buclaw wrote:
> In D time, you're a Neanderthal.

I suppose someone should update that package in the Software Centre then :P
Eh, doesn't matter. Looks like I'll have to get my hands dirty if I want to use GDC.

On 12 April 2013 12:35, Nicholas Smith <nmsmith65@gmail.com> wrote:

> On Friday, 12 April 2013 at 10:03:50 UTC, Iain Buclaw wrote:
>
>> In D time, you're a Neanderthal.
>>
>
> I suppose someone should update that package in the Software Centre then :P Eh, doesn't matter. Looks like I'll have to get my hands dirty if I want to use GDC.
>

Package is in process.  Expected landing is in the next ubuntu release.


-- 
Iain Buclaw

*(p < e ? p++ : p) = (c & 0x0f) + '0';

On 04/12/2013 01:35 PM, Nicholas Smith wrote:
> I suppose someone should update that package in the Software Centre then :P Eh, doesn't matter. Looks like I'll have to get my hands dirty if I want to use GDC.

It's not too bad to build GDC on Ubuntu once you get the hang of it -- here's my technique using the gcc-snapshot package to get GCC sources: http://forum.dlang.org/thread/mailman.1605.1352199912.5162.d.gnu@puremagic.com

Note that that post has one small typo in it -- the line that is given as

    ./setup-gcc.sh ../gcc-snapshot-20121008

should be,

    ./setup-gcc.sh ../gcc-snapshot-20121008/src

Also, note that the gcc-snapshot package has updated since then -- the current with Ubuntu 13.04 is gcc-snapshot-20130330.

Finally, the ./configure options listed there are far too extensive.  These days, I use simply:

    ../gcc-snapshot-YYYYmmdd/src/configure --enable-languages=d
--disable-multilib --enable-checking=release --prefix=/opt/gdc

These days I'm building off the gdc-4.8 branch rather than GDC master, but that may be over-cautious.