r179949 - VLAs in C++14!

[Matthieu Monrocq]

I see, thanks.

Indeed the fact that is guarantees stack allocation is quite different from
`std::dyn_array`. Now let's hope people will behave and only use of small
values of "n" !


On Sat, Apr 20, 2013 at 4:43 PM, Richard Smith <richard at metafoo.co.uk>wrote:

> On Sat, Apr 20, 2013 at 6:46 AM, Matthieu Monrocq <
> matthieu.monrocq at gmail.com> wrote:
>
>> Without the link I cannot confirm, is this "true" VLA or is it
>> `std::dyn_array` ?
>>
>
> What we voted in is pretty close to this:
> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3497.html
>
> Quick summary:
>
> struct S {
>   S();
>   ~S();
> };
> void f(int n) {
>   S array[n];
>   [&array] { // ok
>     for (decltype(auto) s : array) { // ok
>       // ...
>     }
>   }
>   [=array] {} // error
>   sizeof(array); // error
>   decltype(array) array2; // error
>   int nested1[n][2]; // ok
>   int nested2[2][n]; // error
>   typedef int td[n]; // error
> }
>
> On Sat, Apr 20, 2013 at 3:33 PM, Stephen Lin <swlin at post.harvard.edu>wrote:
>>
>>> Oh dear, are they adopting the runtime-evaluated "sizeof" too??
>>>
>>> On Sat, Apr 20, 2013 at 9:20 AM, Richard Smith
>>> <richard-llvm at metafoo.co.uk> wrote:
>>> > Author: rsmith
>>> > Date: Sat Apr 20 08:20:33 2013
>>> > New Revision: 179949
>>> >
>>> > URL: http://llvm.org/viewvc/llvm-project?rev=179949&view=rev
>>> > Log:
>>> > VLAs in C++14!
>>> >
>>> > Modified:
>>> >     cfe/trunk/www/cxx_status.html
>>> >
>>> > Modified: cfe/trunk/www/cxx_status.html
>>> > URL:
>>> http://llvm.org/viewvc/llvm-project/cfe/trunk/www/cxx_status.html?rev=179949&r1=179948&r2=179949&view=diff
>>> >
>>> ==============================================================================
>>> > --- cfe/trunk/www/cxx_status.html (original)
>>> > +++ cfe/trunk/www/cxx_status.html Sat Apr 20 08:20:33 2013
>>> > @@ -427,7 +427,7 @@ available.</p>
>>> >        <td class="none" align="center">No</td>
>>> >      </tr>
>>> >      <tr>
>>> > -      <td>[PROVISIONAL] Runtime-sized arrays with automatic storage
>>> duration</td>
>>> > +      <td>Runtime-sized arrays with automatic storage duration</td>
>>> >        <td><a href="
>>> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3639.html
>>> ">N3639</a></td>
>>> >        <td class="none" align="center">Partial</td>
>>> >      </tr>
>>> > @@ -459,7 +459,7 @@ available.</p>
>>> >      <tr>
>>> >        <td>Clarifying memory allocation</td>
>>> >        <td><a href="
>>> http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3664.html
>>> ">N3664</a></td>
>>> > -      <td class="none" align="center">No</td>
>>> > +      <td class="none" align="center">Partial</td>
>>> >      </tr>
>>> >  </table>
>>> >
>>> >
>>> >
>>> > _______________________________________________
>>> > cfe-commits mailing list
>>> > cfe-commits at cs.uiuc.edu
>>> > http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
>>> _______________________________________________
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>>> http://lists.cs.uiuc.edu/mailman/listinfo/cfe-commits
>>>
>>
>>
>
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