Re: [9fans] assembly syntax in plan 9

[Comeau At9Fans <comeauat9fans@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1165 bytes --]

On Mon, Jan 16, 2012 at 3:11 PM, Joel C. Salomon <joelcsalomon@gmail.com>wrote:

> On 01/16/2012 02:03 PM, Bakul Shah wrote:
> > On Jan 16, 2012, at 10:51 AM, Greg Comeau <comeauat9fans@gmail.com>
> wrote:
> >> What we do in problematic cases with Comeau is to generate code to
> >> arrange for the allocation of the VLA on the heap.  I'm not saying
> >> this is perfect, but at least it gets the feature implementable and up
> >> and running as "a portable implementation" versus perhaps not being
> >> able to implement it at all on some platforms.
> >
> > How do you deal with longjmp?
>
> I recall reading the source for a (mostly-) portable alloca() that
> checked where on the call-stack is was invoked from and released memory
> for any alloca() invocation from lower on the stack.  (The allocations
> themselves were on the heap.)


We do some analogous book keeping as well.

--
Greg Comeau / 4.3.10.1 with C++0xisms now in beta!
Comeau C/C++ ONLINE ==>     http://www.comeaucomputing.com/tryitout
World Class Compilers:  Breathtaking C++, Amazing C99, Fabulous C90.
Comeau C/C++ with Dinkumware's Libraries... Have you tried it?

[-- Attachment #2: Type: text/html, Size: 1701 bytes --]