Descent 0.5.4 released

[Ary Borenszweig]

Brad Roberts escribió:
> Brad Roberts wrote:
>> Ary Borenszweig wrote:
>>> Bill Baxter escribió:
>>>> Another question -- I was wondering what it does for CTFE functions.
>>>> I'm guessing it evaluates them and spits out the result.  If so that
>>>> could be very very helpful.  Especially for code-building CTFE mixins.
>>>>  I don't think you had an example like that in the vid.
>>> It does! See the first part of the video, when I do:
>>>
>>> int x = 1 + 2 + 3 + 4 + someFunc(5);
>>>
>>> and it shows:
>>>
>>> int x = 25;
>>>
>>> It just evaluated someFunc. :-)
>> Given that int x isn't a const expression, is someFunc(5) supposed to be
>> evaluated at compile time like that?
>>
>> Later,
>> Brad
> 
> Hrm.. unless it's just bog standard inlining and const folding going on,
> which is quite possible.

Great observation! I remember functions like that not being evaluated 
unless the variable was declared const. I just debugged that and checked 
with DMD's source code, and it seems the expression in the initializer 
is evaluated if the variable declaration is not inside a function (check 
VarDeclaration::semantic2 and ExpInitializer::semantic, which invoked 
optimize at the end).

I wonder why is that behaviour defined like that...

> 
> Nevermind,
> Brad