Re: [Vala] array declaration

[pancake <pancake youterm com>]

Good C coding practices does not allow to use alloca or dynamically stack allocated arrays because alloca 
does not specifies what happens when you allocate -1 bytes (or somewhat bigger than the stack assigned to the 
running thread.

I wrote a stackbased allocator which performs 3 times faster than malloc and replaces alloca in a secure way..

Vala can implement it by using slices or just simple malloc. Its not a matter of complexity. Just about 
making the code cleaner and not adding possible vulnerabilities or bugs.

----- Original message -----
> On Thu, 2010-07-08 at 10:45 +0200, Ole André Vadla Ravnås wrote:
> > Hi,
> >
> > On Thu, Jul 8, 2010 at 9:35 AM, Xavier Bestel <xavier bestel free fr>
> > wrote:
> > > On Wed, 2010-07-07 at 23:07 +0200, Frederik wrote:
> > (...)
> > > There's one missing type, supported by gcc: dynamic stack-allocated
> > > arrays:
> > >
> > > int a[x];
> > >
> > > Would be very nice to have.
> >
> > Although a nice feature, please don't. It would break compatibility
> > with non-C99 compilers, like MSVC. (We are using Vala this way in
> > http://code.google.com/p/frida-ire/)
>
> Not if it's implemented using alloca().
>
>     Xav
>
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