Re: static array size

[YH <yh at bizmail dot com dot au>]

Thanks Dave. So it is safe to use  variable length array in C program on 
linux machine, and I suppose all GCC on linux machines conform C99 
although I never switch my C compilation to C99.

Thanks and sorry for FAQ questions.

Jim

Dave Korn wrote:

> On 24 April 2006 12:09, YH wrote:
>
>
> > Hello,
> >
> >  Is the following example legal in current GCC compilation for C
> > program? I thought the static array allocation can only used by a
>
>
>   Not static!  That's an automatic allocation on the stack.
>
>
> > defined constant such as char buf[MAX_SIZE], where #define MAX_SIZE 10?
> >
> > void DoSomthing(int size)
> > {
> >       char buf[size];
> >
> >         ...... do something ....
> >
> > }
>
>
>
>
> http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Variable-Length.html#Variable-Leng
> th
> "Variable-length automatic arrays are allowed in ISO C99, and as an extension
> GCC accepts them in C89 mode and in C++"
>
>     cheers,
>       DaveK