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Re: alloca is bad?
On Fri, Nov 10, 2000 at 05:11:55PM +1100, Andrew Cagney wrote:
>Nick Duffek wrote:
>>
>> On 9-Nov-2000, Christopher Faylor wrote:
>>
>> >I've been told in private email that I mustn't use alloca
>>
>> Say it ain't so!
>>
>> >Alloca is useful.
>>
>> Especially because multi-arching is turning small compile-time constants
>> into run-time variables all over the place. If we can't use alloca, then
>> wherever there's something like this:
>>
>> char rawbuf[MAX_REGISTER_SIZE];
>
>This is being converted to
>
> char *rawbuf = alloca (MAX_REGISTER_SIZE);
>
>with the knowledge that it probably isn't going to work on some hosts.
>The conversion is tolerated because a more significant change incures
>greater risk (bigger chance of someone botching it :-).
>
>At the time it was agreed that such alloca() calls should eventually be
>eliminated.
Why?
cgf