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May 08, 2012
Behaviour of alias this changed
I have some code along these lines:

	struct S {
		short[4] data;
		alias this data;

		string toString() { ... }
	}
	...
	S s;
	writeln(to!string(s));

In dmd 2.059 (I believe) and earlier, this calls S.toString(). However,
in git dmd, this calls data.toString() instead.

I'm just curious about the rationale for this change, and whether
there's a way to override the toString() call so that it always calls
S.toString()?


T

-- 
To err is human; to forgive is not our policy. -- Samuel Adler
May 08, 2012
Re: Behaviour of alias this changed
On 05/08/2012 10:11 AM, H. S. Teoh wrote:
> I have some code along these lines:
>
> 	struct S {
> 		short[4] data;
> 		alias this data;
>
> 		string toString() { ... }
> 	}
> 	...
> 	S s;
> 	writeln(to!string(s));
>
> In dmd 2.059 (I believe) and earlier, this calls S.toString(). However,
> in git dmd, this calls data.toString() instead.
>
> I'm just curious about the rationale for this change, and whether
> there's a way to override the toString() call so that it always calls
> S.toString()?
>
>
> T
>

Just a guess: It could be related to const-correctness improvements. Try 
defining S.toString() as const.

Ali

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