Re: alloca again

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

On Mon, Oct 03, 2022 at 18:32:47 +0000, David Holland wrote:

> On Mon, Oct 03, 2022 at 03:45:06PM +0200, Roland Illig wrote:
>  > > This is the current alloca definition in the libc headers:
>  > > 
>  > > #if defined(_NETBSD_SOURCE)
>  > > #if defined(alloca) && (alloca == __builtin_alloca) && \
> 
> Note that the part you didn't quote is
>    defined(__GNUC__) && __GNUC__ < 2
> and all it does is change the argument type to int from size_t.
> 
> This makes it highly unlikely that it ever failed, for an assortment
> of reasons, not the least of which is that we removed critical parts
> of gcc2 support from /usr/include years ago so it's not been exercised
> in at least that long.

ITYM gcc1?  Note "less than" in  __GNUC__ < 2

-uwe