[dmd-beta] beta 2

David Simcha dsimcha at gmail.com
Thu Jul 7 06:19:19 PDT 2011

I found a regression:


I also found what I think is another one, but I don't have time to 
reduce it right now.  In other words, if you fix the first one in short 
order it's probably not worth immediately making another release.  I'll 
get busy with isolating the second regression tonight.

On 7/7/2011 12:47 AM, Walter Bright wrote:
> On 7/6/2011 9:45 PM, Don Clugston wrote:
>> On 7 July 2011 03:12, Jason House<jason.james.house at gmail.com>  wrote:
>>> On Jul 6, 2011, at 6:02 PM, Walter Bright<walter at digitalmars.com>  
>>> wrote:
>>> On 7/6/2011 2:12 PM, David Simcha wrote:
>>> On Wed, Jul 6, 2011 at 5:09 PM, Walter Bright<walter at digitalmars.com>
>>> wrote:
>>>> This is what I have difficulty with. Consider:
>>>>     pure void foo(int* p) { *p = 3; }
>>>> That isn't pure, or weakly pure.
>>> ???? Yes it is.  It can be called from a strongly pure function without
>>> violating purity
>>> Yes, but it is not pure itself.
>>> Eek! Walter, I think you have a severe misunderstanding of Don's 
>>> weak/strong
>>> purity concept. Doing a quick google search, I found the following
>>> link: 
>>> http://www.mail-archive.com/digitalmars-d@puremagic.com/msg40808.html
>> Walter, I don't know what's happened here. You seem to have forgotten
>> the whole point, somehow.
>> The whole point of the 'weak pure' concept was that, provided a
>> function doesn't directly access global variables, it is OK for it to
>> be called from a strongly pure function.
>> If a function is weakly pure, that means pretty much nothing. You
>> can't do any optimization with it, etc.
>> The one and only thing is gives you, is that it can safely be called
>> from a strongly pure function.
>> You seem to be removing weak purity from the language???
> I put up a new beta with it back in.
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