Iterating over 0..T.max

[Steven Schveighoffer]

On Thu, 10 Mar 2011 07:50:21 -0500, bearophile <bearophileHUGS at lycos.com>  
wrote:

> Magnus Lie Hetland:
>
>> Derp. I didn't mean bool -- I was talking about byte. (Which should
>> make quite a bit more sense, given that I'm talking about a limit of
>> 256... :D)
>
> Please show a complete minimal program that gives you problem. (I have  
> failed to reproduce your problem on Windows).


void main()
{
     auto a = new ubyte[256];
     foreach(ubyte i, ref e; a) e = i;
}

I think you should file this as a bug Magnus, I see no reason why this  
should result in an infinite loop.

Probably the reason is because the compiler rewrites this as:

for(ubyte i = 0; i < a.length; i++)

where what it should do is:

for(size_t _i = 0; _i < a.length; _i++)
{
     auto i = cast(ubyte) _i;
     ...
}

or just fail to compile if you use anything that can't hold a size_t as an  
index type.

-Steve